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annotate packages/io/serial/current/src/common/serial.c @ 1190:d53522870fc0

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* src/common/serial.c: Make serial_select prototype match implementation.
author jlarmour
date Tue, 02 Sep 2003 03:17:21 +0000
parents c706e0d163d7
children 349e2eadf98d
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1 //==========================================================================
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2 //
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3 // io/serial/common/serial.c
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4 //
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5 // High level serial driver
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6 //
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7 //==========================================================================
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8 //####ECOSGPLCOPYRIGHTBEGIN####
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9 // -------------------------------------------
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10 // This file is part of eCos, the Embedded Configurable Operating System.
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11 // Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
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12 // Copyright (C) 2003 Gary Thomas
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13 //
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14 // eCos is free software; you can redistribute it and/or modify it under
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15 // the terms of the GNU General Public License as published by the Free
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16 // Software Foundation; either version 2 or (at your option) any later version.
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17 //
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18 // eCos is distributed in the hope that it will be useful, but WITHOUT ANY
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19 // WARRANTY; without even the implied warranty of MERCHANTABILITY or
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20 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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21 // for more details.
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22 //
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23 // You should have received a copy of the GNU General Public License along
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24 // with eCos; if not, write to the Free Software Foundation, Inc.,
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25 // 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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26 //
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27 // As a special exception, if other files instantiate templates or use macros
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28 // or inline functions from this file, or you compile this file and link it
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29 // with other works to produce a work based on this file, this file does not
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30 // by itself cause the resulting work to be covered by the GNU General Public
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31 // License. However the source code for this file must still be made available
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32 // in accordance with section (3) of the GNU General Public License.
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33 //
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34 // This exception does not invalidate any other reasons why a work based on
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35 // this file might be covered by the GNU General Public License.
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36 //
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37 // Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
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38 // at http://sources.redhat.com/ecos/ecos-license/
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39 // -------------------------------------------
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40 //####ECOSGPLCOPYRIGHTEND####
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41 //==========================================================================
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42 //#####DESCRIPTIONBEGIN####
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43 //
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44 // Author(s): gthomas
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45 // Contributors: gthomas, grante, jlarmour, jskov
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46 // Date: 1999-02-04
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47 // Purpose: Top level serial driver
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48 // Description:
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49 //
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50 //####DESCRIPTIONEND####
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51 //
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52 //==========================================================================
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53
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54 #include <pkgconf/io.h>
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55 #include <pkgconf/io_serial.h>
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56
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57 #include <cyg/io/io.h>
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58 #include <cyg/io/devtab.h>
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59 #include <cyg/io/serial.h>
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60 #include <cyg/infra/cyg_ass.h> // assertion support
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61 #include <cyg/infra/diag.h> // diagnostic output
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63 static Cyg_ErrNo serial_write(cyg_io_handle_t handle, const void *buf, cyg_uint32 *len);
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64 static Cyg_ErrNo serial_read(cyg_io_handle_t handle, void *buf, cyg_uint32 *len);
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65 static cyg_bool serial_select(cyg_io_handle_t handle, cyg_uint32 which, CYG_ADDRWORD info);
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66 static Cyg_ErrNo serial_get_config(cyg_io_handle_t handle, cyg_uint32 key, void *buf, cyg_uint32 *len);
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67 static Cyg_ErrNo serial_set_config(cyg_io_handle_t handle, cyg_uint32 key, const void *buf, cyg_uint32 *len);
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68
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69 DEVIO_TABLE(cyg_io_serial_devio,
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70 serial_write,
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71 serial_read,
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72 serial_select,
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73 serial_get_config,
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74 serial_set_config
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75 );
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76
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77 static void serial_init(serial_channel *chan);
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78 static void serial_xmt_char(serial_channel *chan);
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79 static void serial_rcv_char(serial_channel *chan, unsigned char c);
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80 #ifdef CYGOPT_IO_SERIAL_SUPPORT_LINE_STATUS
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81 static void serial_indicate_status(serial_channel *chan,
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82 cyg_serial_line_status_t *s);
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83 #endif
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84 #if CYGINT_IO_SERIAL_BLOCK_TRANSFER
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85 static rcv_req_reply_t serial_data_rcv_req(serial_channel *chan, int avail,
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86 int* space_avail,
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87 unsigned char** space);
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88 static void serial_data_rcv_done(serial_channel *chan, int chars_rcvd);
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89 static xmt_req_reply_t serial_data_xmt_req(serial_channel *chan, int space,
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90 int* chars_avail,
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91 unsigned char** chars);
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92 static void serial_data_xmt_done(serial_channel *chan, int chars_sent);
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93 # ifdef CYGOPT_IO_SERIAL_SUPPORT_LINE_STATUS
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94 SERIAL_CALLBACKS(cyg_io_serial_callbacks,
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95 serial_init,
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96 serial_xmt_char,
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97 serial_rcv_char,
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98 serial_data_rcv_req,
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99 serial_data_rcv_done,
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100 serial_data_xmt_req,
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101 serial_data_xmt_done,
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102 serial_indicate_status);
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103
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104 # else
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105 SERIAL_CALLBACKS(cyg_io_serial_callbacks,
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106 serial_init,
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107 serial_xmt_char,
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108 serial_rcv_char,
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109 serial_data_rcv_req,
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110 serial_data_rcv_done,
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111 serial_data_xmt_req,
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112 serial_data_xmt_done);
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113 # endif
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114 #else
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115 # ifdef CYGOPT_IO_SERIAL_SUPPORT_LINE_STATUS
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116 SERIAL_CALLBACKS(cyg_io_serial_callbacks,
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117 serial_init,
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118 serial_xmt_char,
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119 serial_rcv_char,
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120 serial_indicate_status);
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121 # else
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122 SERIAL_CALLBACKS(cyg_io_serial_callbacks,
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123 serial_init,
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124 serial_xmt_char,
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125 serial_rcv_char);
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126 # endif
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127 #endif
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128
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129 // ---------------------------------------------------------------------------
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130
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131 #ifdef CYGPKG_IO_SERIAL_FLOW_CONTROL
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132
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133 static __inline__ void
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134 throttle_tx( serial_channel *chan )
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135 {
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136 chan->flow_desc.flags |= CYG_SERIAL_FLOW_OUT_THROTTLED;
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137 // the throttling itself occurs in the serial_xmt_char() callback
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138 }
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139
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140 static __inline__ void
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141 restart_tx( serial_channel *chan )
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142 {
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143 serial_funs *funs = chan->funs;
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144
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145 chan->flow_desc.flags &= ~CYG_SERIAL_FLOW_OUT_THROTTLED;
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146
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147 #ifdef CYGPKG_IO_SERIAL_SELECT_SUPPORT
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148 // See if there is now enough room to say it is available
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149 // for writing
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150 {
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151 cbuf_t *cbuf = &chan->out_cbuf;
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152 int space;
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153
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154 space = cbuf->len - cbuf->nb;
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155 if (space >= cbuf->low_water)
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156 cyg_selwakeup( &cbuf->selinfo );
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157 }
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158 #endif
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159 if ( chan->out_cbuf.nb > 0 )
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160 (funs->start_xmit)(chan);
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161 }
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162
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163 static __inline__ void
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164 throttle_rx( serial_channel *chan, cyg_bool force )
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165 {
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166 serial_funs *funs = chan->funs;
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167
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168 chan->flow_desc.flags |= CYG_SERIAL_FLOW_IN_THROTTLED;
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169 #ifdef CYGOPT_IO_SERIAL_FLOW_CONTROL_SOFTWARE
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170 // send an xoff
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171 if ( force || chan->config.flags & CYGNUM_SERIAL_FLOW_XONXOFF_RX ) {
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172 chan->flow_desc.xchar = CYGDAT_IO_SERIAL_FLOW_CONTROL_XOFF_CHAR;
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173 // Make sure xmit is running so we can send it
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174 (funs->start_xmit)(chan);
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175 }
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176 #endif
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177 #ifdef CYGOPT_IO_SERIAL_FLOW_CONTROL_HW
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178 {
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179 cyg_uint32 i=1;
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180 cyg_uint32 len = sizeof(i);
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181
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182 // set hardware flow control - don't care if it fails
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183 if ( force || (chan->config.flags & CYGNUM_SERIAL_FLOW_RTSCTS_RX) ||
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184 (chan->config.flags & CYGNUM_SERIAL_FLOW_DSRDTR_RX) )
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185 (funs->set_config)(chan,
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186 CYG_IO_SET_CONFIG_SERIAL_HW_RX_FLOW_THROTTLE,
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187 &i, &len);
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188 }
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189 #endif
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190 }
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191
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192 static __inline__ void
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193 restart_rx( serial_channel *chan, cyg_bool force )
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194 {
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195 serial_funs *funs = chan->funs;
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196
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197 chan->flow_desc.flags &= ~CYG_SERIAL_FLOW_IN_THROTTLED;
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198 #ifdef CYGOPT_IO_SERIAL_FLOW_CONTROL_SOFTWARE
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199 // send an xon
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200 if ( force || chan->config.flags & CYGNUM_SERIAL_FLOW_XONXOFF_RX ) {
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201 chan->flow_desc.xchar = CYGDAT_IO_SERIAL_FLOW_CONTROL_XON_CHAR;
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202 (funs->start_xmit)(chan); // Make sure xmit is running so we can send it
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203 }
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204 #endif
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205 #ifdef CYGOPT_IO_SERIAL_FLOW_CONTROL_HW
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206 {
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207 cyg_uint32 i=0;
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208 cyg_uint32 len = sizeof(i);
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209
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210 // set hardware flow control - don't care if it fails
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211 if ( force || (chan->config.flags & CYGNUM_SERIAL_FLOW_RTSCTS_RX) ||
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212 (chan->config.flags & CYGNUM_SERIAL_FLOW_DSRDTR_RX) )
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213 (funs->set_config)(chan,
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214 CYG_IO_SET_CONFIG_SERIAL_HW_RX_FLOW_THROTTLE,
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215 &i, &len);
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216 }
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217 #endif
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218 }
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219
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220 #endif
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221
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222 // ---------------------------------------------------------------------------
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223
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224 static void
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225 serial_init(serial_channel *chan)
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226 {
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227 if (chan->init) return;
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228 if (chan->out_cbuf.len != 0) {
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229 #ifdef CYGDBG_IO_INIT
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230 diag_printf("Set output buffer - buf: %x len: %d\n", chan->out_cbuf.data, chan->out_cbuf.len);
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231 #endif
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232 chan->out_cbuf.waiting = false;
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233 chan->out_cbuf.abort = false;
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234 #ifdef CYGOPT_IO_SERIAL_SUPPORT_NONBLOCKING
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235 chan->out_cbuf.blocking = true;
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236 #endif
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237 chan->out_cbuf.pending = 0;
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238 cyg_drv_mutex_init(&chan->out_cbuf.lock);
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239 cyg_drv_cond_init(&chan->out_cbuf.wait, &chan->out_cbuf.lock);
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240 chan->out_cbuf.low_water = chan->out_cbuf.len / 4;
115
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241 #ifdef CYGPKG_IO_SERIAL_SELECT_SUPPORT
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242 cyg_selinit( &chan->out_cbuf.selinfo );
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243 #endif
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244 }
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245 if (chan->in_cbuf.len != 0) {
115
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246 cbuf_t *cbuf = &chan->in_cbuf;
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247
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248 #ifdef CYGDBG_IO_INIT
115
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249 diag_printf("Set input buffer - buf: %x len: %d\n", cbuf->data, cbuf->len);
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250 #endif
115
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251 cbuf->waiting = false;
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252 cbuf->abort = false;
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253 #ifdef CYGOPT_IO_SERIAL_SUPPORT_NONBLOCKING
115
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254 cbuf->blocking = true;
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255 #endif
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256 #ifdef CYGPKG_IO_SERIAL_SELECT_SUPPORT
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257 cyg_selinit( &cbuf->selinfo );
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258 #endif
115
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259 #ifdef CYGPKG_IO_SERIAL_FLOW_CONTROL
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260 cbuf->low_water =
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261 (CYGNUM_IO_SERIAL_FLOW_CONTROL_LOW_WATER_PERCENT * cbuf->len) / 100;
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262 cbuf->high_water =
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263 (CYGNUM_IO_SERIAL_FLOW_CONTROL_HIGH_WATER_PERCENT * cbuf->len) / 100;
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264 # ifdef CYGOPT_IO_SERIAL_FLOW_CONTROL_SOFTWARE
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265 // But make sure it is at least 35 below buffer size, to allow
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266 // for 16 byte fifos, twice, plus some latency before s/w flow
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267 // control can kick in. This doesn't apply to h/w flow control
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268 // as it is near-instaneous
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269 if ( (cbuf->len - cbuf->high_water) < 35 )
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270 cbuf->high_water = cbuf->len - 35;
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271 // and just in case...
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272 if ( cbuf->high_water <= 0 )
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273 cbuf->high_water = 1;
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274 if ( cbuf->low_water > cbuf->high_water )
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275 cbuf->low_water = cbuf->high_water;
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276 # endif
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277 #endif
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278 cyg_drv_mutex_init(&cbuf->lock);
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279 cyg_drv_cond_init(&cbuf->wait, &cbuf->lock);
2
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280 }
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281 #ifdef CYGOPT_IO_SERIAL_SUPPORT_LINE_STATUS
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282 chan->status_callback = NULL;
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283 #endif
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284
128
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285 #ifdef CYGDBG_USE_ASSERTS
138
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286 #if CYGINT_IO_SERIAL_BLOCK_TRANSFER
128
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287 chan->in_cbuf.block_mode_xfer_running = false;
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288 chan->out_cbuf.block_mode_xfer_running = false;
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289 #endif // CYGINT_IO_SERIAL_BLOCK_TRANSFER
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290 #endif // CYGDBG_USE_ASSERTS
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291 chan->init = true;
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292 }
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293
115
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294 // ---------------------------------------------------------------------------
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295
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296 static Cyg_ErrNo
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297 serial_write(cyg_io_handle_t handle, const void *_buf, cyg_uint32 *len)
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298 {
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299 cyg_devtab_entry_t *t = (cyg_devtab_entry_t *)handle;
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300 serial_channel *chan = (serial_channel *)t->priv;
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301 serial_funs *funs = chan->funs;
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302 cyg_int32 size = *len;
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303 cyg_uint8 *buf = (cyg_uint8 *)_buf;
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304 int next;
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305 cbuf_t *cbuf = &chan->out_cbuf;
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306 Cyg_ErrNo res = ENOERR;
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307
115
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308 cyg_drv_mutex_lock(&cbuf->lock);
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309 cbuf->abort = false;
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310
2
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311 if (cbuf->len == 0) {
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312 // Non interrupt driven (i.e. polled) operation
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313 while (size-- > 0) {
115
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314 #ifdef CYGPKG_IO_SERIAL_FLOW_CONTROL
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315 while ( ( 0 == (chan->flow_desc.flags & CYG_SERIAL_FLOW_OUT_THROTTLED) ) &&
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316 ((funs->putc)(chan, *buf) == false) )
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317 ; // Ignore full, keep trying
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318 #else
128
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319 while ((funs->putc)(chan, *buf) == false)
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320 ; // Ignore full, keep trying
115
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321 #endif
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322 buf++;
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323 }
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324 } else {
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325 cyg_drv_dsr_lock(); // Avoid race condition testing pointers
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326 while (size > 0) {
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327 next = cbuf->put + 1;
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328 if (next == cbuf->len) next = 0;
115
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329 if (cbuf->nb == cbuf->len) {
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330 cbuf->waiting = true;
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331 // Buffer full - wait for space
115
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332 #ifdef CYGPKG_IO_SERIAL_FLOW_CONTROL
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333 if ( 0 == (chan->flow_desc.flags & CYG_SERIAL_FLOW_OUT_THROTTLED) )
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334 #endif
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335 (funs->start_xmit)(chan); // Make sure xmit is running
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336
128
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337 // Check flag: 'start_xmit' may have obviated the need
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338 // to wait :-)
62
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339 if (cbuf->waiting) {
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340 #ifdef CYGOPT_IO_SERIAL_SUPPORT_NONBLOCKING
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341 // Optionally return if configured for non-blocking mode.
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342 if (!cbuf->blocking) {
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343 *len -= size; // number of characters actually sent
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344 cbuf->waiting = false;
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345 res = size == 0 ? -EAGAIN : ENOERR;
86
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346 break;
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347 }
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348 #endif // CYGOPT_IO_SERIAL_SUPPORT_NONBLOCKING
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349 cbuf->pending += size; // Have this much more to send [eventually]
115
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350 if( !cyg_drv_cond_wait(&cbuf->wait) )
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351 cbuf->abort = true;
62
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352 cbuf->pending -= size;
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353 }
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354 if (cbuf->abort) {
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355 // Give up!
86
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356 *len -= size; // number of characters actually sent
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357 cbuf->abort = false;
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358 cbuf->waiting = false;
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359 res = -EINTR;
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360 break;
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361 }
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362 } else {
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363 cbuf->data[cbuf->put++] = *buf++;
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364 cbuf->put = next;
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365 cbuf->nb++;
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366 size--; // Only count if actually sent!
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367 }
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368 }
115
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369 #ifdef CYGPKG_IO_SERIAL_FLOW_CONTROL
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370 if ( 0 == (chan->flow_desc.flags & CYG_SERIAL_FLOW_OUT_THROTTLED) )
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371 #endif
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372 (funs->start_xmit)(chan); // Start output as necessary
2
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373 cyg_drv_dsr_unlock();
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374 }
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375 cyg_drv_mutex_unlock(&cbuf->lock);
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376 return res;
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377 }
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378
115
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379
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380 // ---------------------------------------------------------------------------
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381
2
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382 static Cyg_ErrNo
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383 serial_read(cyg_io_handle_t handle, void *_buf, cyg_uint32 *len)
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384 {
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385 cyg_devtab_entry_t *t = (cyg_devtab_entry_t *)handle;
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386 serial_channel *chan = (serial_channel *)t->priv;
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387 serial_funs *funs = chan->funs;
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388 cyg_uint8 *buf = (cyg_uint8 *)_buf;
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389 cyg_int32 size = 0;
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390 cbuf_t *cbuf = &chan->in_cbuf;
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391 Cyg_ErrNo res = ENOERR;
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392 #ifdef XX_CYGDBG_DIAG_BUF
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393 extern int enable_diag_uart;
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394 int _enable = enable_diag_uart;
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395 int _time, _stime;
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396 externC cyg_tick_count_t cyg_current_time(void);
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397 #endif // CYGDBG_DIAG_BUF
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398
115
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399 cyg_drv_mutex_lock(&cbuf->lock);
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400 cbuf->abort = false;
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401
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402 if (cbuf->len == 0) {
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403 // Non interrupt driven (i.e. polled) operation
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404 while (size++ < *len) {
115
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405 cyg_uint8 c = (funs->getc)(chan);
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406 #ifdef CYGOPT_IO_SERIAL_FLOW_CONTROL_SOFTWARE
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407 // for software flow control, if the driver returns one of the
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408 // characters we act on it and then drop it (the app must not
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409 // see it)
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410 if ( chan->config.flags & CYGNUM_SERIAL_FLOW_XONXOFF_TX ) {
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411 if ( c == CYGDAT_IO_SERIAL_FLOW_CONTROL_XOFF_CHAR ) {
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412 throttle_tx( chan );
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413 } else if ( c == CYGDAT_IO_SERIAL_FLOW_CONTROL_XON_CHAR ) {
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414 restart_tx( chan );
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415 }
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416 else
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417 *buf++ = c;
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418 }
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419 else
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420 *buf++ = c;
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421 #else
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422 *buf++ = c;
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423 #endif
2
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424 }
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425 } else {
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426 cyg_drv_dsr_lock(); // Avoid races
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427 while (size < *len) {
115
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diff changeset
428 if (cbuf->nb > 0) {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents: 107
diff changeset
429 #ifdef CYGPKG_IO_SERIAL_FLOW_CONTROL
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents: 107
diff changeset
430 if ( (cbuf->nb <= cbuf->low_water) &&
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents: 107
diff changeset
431 (chan->flow_desc.flags & CYG_SERIAL_FLOW_IN_THROTTLED) )
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jlarmour
parents: 107
diff changeset
432 restart_rx( chan, false );
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jlarmour
parents: 107
diff changeset
433 #endif
2
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
434 *buf++ = cbuf->data[cbuf->get];
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
435 if (++cbuf->get == cbuf->len) cbuf->get = 0;
115
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents: 107
diff changeset
436 cbuf->nb--;
2
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
437 size++;
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
438 } else {
86
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST
jlarmour
parents: 82
diff changeset
439 #ifdef CYGOPT_IO_SERIAL_SUPPORT_NONBLOCKING
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jlarmour
parents: 82
diff changeset
440 if (!cbuf->blocking) {
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST
jlarmour
parents: 82
diff changeset
441 *len = size; // characters actually read
868
61bd80311015 Fix typo - ENOERROR must be ENOERR
gthomas
parents: 864
diff changeset
442 res = size == 0 ? -EAGAIN : ENOERR;
86
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST
jlarmour
parents: 82
diff changeset
443 break;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST
jlarmour
parents: 82
diff changeset
444 }
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jlarmour
parents: 82
diff changeset
445 #endif // CYGOPT_IO_SERIAL_SUPPORT_NONBLOCKING
2
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
446 cbuf->waiting = true;
20
5f5102441818 Merge from eCos master repository on 1999-07-02-23:17:07-BST
jlarmour
parents: 4
diff changeset
447 #ifdef XX_CYGDBG_DIAG_BUF
115
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parents: 107
diff changeset
448 enable_diag_uart = 0;
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parents: 107
diff changeset
449 HAL_CLOCK_READ(&_time);
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parents: 107
diff changeset
450 _stime = (int)cyg_current_time();
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parents: 107
diff changeset
451 diag_printf("READ wait - get: %d, put: %d, time: %x.%x\n", cbuf->get, cbuf->put, _stime, _time);
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parents: 107
diff changeset
452 enable_diag_uart = _enable;
20
5f5102441818 Merge from eCos master repository on 1999-07-02-23:17:07-BST
jlarmour
parents: 4
diff changeset
453 #endif // CYGDBG_DIAG_BUF
115
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents: 107
diff changeset
454 if( !cyg_drv_cond_wait(&cbuf->wait) )
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jlarmour
parents: 107
diff changeset
455 cbuf->abort = true;
20
5f5102441818 Merge from eCos master repository on 1999-07-02-23:17:07-BST
jlarmour
parents: 4
diff changeset
456 #ifdef XX_CYGDBG_DIAG_BUF
115
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
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parents: 107
diff changeset
457 enable_diag_uart = 0;
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jlarmour
parents: 107
diff changeset
458 HAL_CLOCK_READ(&_time);
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jlarmour
parents: 107
diff changeset
459 _stime = (int)cyg_current_time();
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parents: 107
diff changeset
460 diag_printf("READ continue - get: %d, put: %d, time: %x.%x\n", cbuf->get, cbuf->put, _stime, _time);
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parents: 107
diff changeset
461 enable_diag_uart = _enable;
20
5f5102441818 Merge from eCos master repository on 1999-07-02-23:17:07-BST
jlarmour
parents: 4
diff changeset
462 #endif // CYGDBG_DIAG_BUF
2
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
463 if (cbuf->abort) {
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
464 // Give up!
86
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST
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parents: 82
diff changeset
465 *len = size; // characters actually read
2
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
466 cbuf->abort = false;
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
467 cbuf->waiting = false;
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
468 res = -EINTR;
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
469 break;
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
470 }
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
471 }
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
472 }
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
473 cyg_drv_dsr_unlock();
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
474 }
82
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST
jlarmour
parents: 66
diff changeset
475 #ifdef XX_CYGDBG_DIAG_BUF
20
5f5102441818 Merge from eCos master repository on 1999-07-02-23:17:07-BST
jlarmour
parents: 4
diff changeset
476 cyg_drv_isr_lock();
82
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST
jlarmour
parents: 66
diff changeset
477 enable_diag_uart = 0;
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST
jlarmour
parents: 66
diff changeset
478 HAL_CLOCK_READ(&_time);
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST
jlarmour
parents: 66
diff changeset
479 _stime = (int)cyg_current_time();
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST
jlarmour
parents: 66
diff changeset
480 diag_printf("READ done - size: %d, len: %d, time: %x.%x\n", size, *len, _stime, _time);
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST
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parents: 66
diff changeset
481 enable_diag_uart = _enable;
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jlarmour
parents: 66
diff changeset
482 cyg_drv_isr_unlock();
20
5f5102441818 Merge from eCos master repository on 1999-07-02-23:17:07-BST
jlarmour
parents: 4
diff changeset
483 #endif // CYGDBG_DIAG_BUF
2
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
484 cyg_drv_mutex_unlock(&cbuf->lock);
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
485 return res;
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
486 }
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
487
115
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parents: 107
diff changeset
488
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jlarmour
parents: 107
diff changeset
489 // ---------------------------------------------------------------------------
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jlarmour
parents: 107
diff changeset
490
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
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parents: 107
diff changeset
491 static cyg_bool
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jlarmour
parents: 107
diff changeset
492 serial_select(cyg_io_handle_t handle, cyg_uint32 which, CYG_ADDRWORD info)
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jlarmour
parents: 107
diff changeset
493 {
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parents: 107
diff changeset
494 #ifdef CYGPKG_IO_SERIAL_SELECT_SUPPORT
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diff changeset
495
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parents: 107
diff changeset
496 cyg_devtab_entry_t *t = (cyg_devtab_entry_t *)handle;
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parents: 107
diff changeset
497 serial_channel *chan = (serial_channel *)t->priv;
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parents: 107
diff changeset
498
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents: 107
diff changeset
499
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents: 107
diff changeset
500 switch( which )
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jlarmour
parents: 107
diff changeset
501 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents: 107
diff changeset
502 case CYG_FREAD:
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
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parents: 107
diff changeset
503 {
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diff changeset
504 cbuf_t *cbuf = &chan->in_cbuf;
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parents: 107
diff changeset
505
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents: 107
diff changeset
506 // Check for data in the input buffer. If there is none,
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jlarmour
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diff changeset
507 // register the select operation, otherwise return true.
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jlarmour
parents: 107
diff changeset
508
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jlarmour
parents: 107
diff changeset
509 if( cbuf->nb == 0 )
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jlarmour
parents: 107
diff changeset
510 cyg_selrecord( info, &cbuf->selinfo );
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents: 107
diff changeset
511 else return true;
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jlarmour
parents: 107
diff changeset
512 }
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jlarmour
parents: 107
diff changeset
513 break;
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jlarmour
parents: 107
diff changeset
514
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents: 107
diff changeset
515 case CYG_FWRITE:
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents: 107
diff changeset
516 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents: 107
diff changeset
517 // Check for space in the output buffer. If there is none,
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents: 107
diff changeset
518 // register the select operation, otherwise return true.
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jlarmour
parents: 107
diff changeset
519
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
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parents: 107
diff changeset
520 cbuf_t *cbuf = &chan->out_cbuf;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
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parents: 107
diff changeset
521 int space = cbuf->len - cbuf->nb;
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parents: 107
diff changeset
522 #ifdef CYGPKG_IO_SERIAL_FLOW_CONTROL
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jlarmour
parents: 107
diff changeset
523 if ( (space < cbuf->low_water) ||
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jlarmour
parents: 107
diff changeset
524 (chan->flow_desc.flags & CYG_SERIAL_FLOW_OUT_THROTTLED) )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
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parents: 107
diff changeset
525 cyg_selrecord( info, &cbuf->selinfo );
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jlarmour
parents: 107
diff changeset
526 #else
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jlarmour
parents: 107
diff changeset
527 if (space < cbuf->low_water)
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jlarmour
parents: 107
diff changeset
528 cyg_selrecord( info, &cbuf->selinfo );
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jlarmour
parents: 107
diff changeset
529 #endif
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jlarmour
parents: 107
diff changeset
530 else return true;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents: 107
diff changeset
531 }
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jlarmour
parents: 107
diff changeset
532 break;
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jlarmour
parents: 107
diff changeset
533
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents: 107
diff changeset
534 case 0: // exceptions - none supported
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jlarmour
parents: 107
diff changeset
535 break;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents: 107
diff changeset
536 }
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jlarmour
parents: 107
diff changeset
537 return false;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents: 107
diff changeset
538 #else
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents: 107
diff changeset
539
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents: 107
diff changeset
540 // With no select support, we simply return true.
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jlarmour
parents: 107
diff changeset
541 return true;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents: 107
diff changeset
542 #endif
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents: 107
diff changeset
543 }
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jlarmour
parents: 107
diff changeset
544
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents: 107
diff changeset
545
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents: 107
diff changeset
546 // ---------------------------------------------------------------------------
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jlarmour
parents: 107
diff changeset
547
2
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
548 static Cyg_ErrNo
128
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST
jlarmour
parents: 115
diff changeset
549 serial_get_config(cyg_io_handle_t handle, cyg_uint32 key, void *xbuf,
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST
jlarmour
parents: 115
diff changeset
550 cyg_uint32 *len)
2
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
551 {
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
552 cyg_devtab_entry_t *t = (cyg_devtab_entry_t *)handle;
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
553 serial_channel *chan = (serial_channel *)t->priv;
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
554 cyg_serial_info_t *buf = (cyg_serial_info_t *)xbuf;
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
555 Cyg_ErrNo res = ENOERR;
86
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST
jlarmour
parents: 82
diff changeset
556 cbuf_t *out_cbuf = &chan->out_cbuf;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST
jlarmour
parents: 82
diff changeset
557 cbuf_t *in_cbuf = &chan->in_cbuf;
2
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
558 serial_funs *funs = chan->funs;
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
559
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
560 switch (key) {
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
561 case CYG_IO_GET_CONFIG_SERIAL_INFO:
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
562 if (*len < sizeof(cyg_serial_info_t)) {
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
563 return -EINVAL;
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
564 }
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
565 *buf = chan->config;
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
566 *len = sizeof(chan->config);
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
567 break;
86
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST
jlarmour
parents: 82
diff changeset
568
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST
jlarmour
parents: 82
diff changeset
569 case CYG_IO_GET_CONFIG_SERIAL_BUFFER_INFO:
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST
jlarmour
parents: 82
diff changeset
570 // return rx/tx buffer sizes and counts
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST
jlarmour
parents: 82
diff changeset
571 {
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST
jlarmour
parents: 82
diff changeset
572 cyg_serial_buf_info_t *p;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST
jlarmour
parents: 82
diff changeset
573 if (*len < sizeof(cyg_serial_buf_info_t))
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST
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parents: 82
diff changeset
574 return -EINVAL;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST
jlarmour
parents: 82
diff changeset
575
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST
jlarmour
parents: 82
diff changeset
576 *len = sizeof(cyg_serial_buf_info_t);
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST
jlarmour
parents: 82
diff changeset
577 p = (cyg_serial_buf_info_t *)xbuf;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST
jlarmour
parents: 82
diff changeset
578
88
afdeb44241de Merge from eCos master repository on 2000-05-12-07:47:04-BST
jlarmour
parents: 86
diff changeset
579 p->rx_bufsize = in_cbuf->len;
115
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents: 107
diff changeset
580 if (p->rx_bufsize)
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents: 107
diff changeset
581 p->rx_count = in_cbuf->nb;
86
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST
jlarmour
parents: 82
diff changeset
582 else
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST
jlarmour
parents: 82
diff changeset
583 p->rx_count = 0;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST
jlarmour
parents: 82
diff changeset
584
88
afdeb44241de Merge from eCos master repository on 2000-05-12-07:47:04-BST
jlarmour
parents: 86
diff changeset
585 p->tx_bufsize = out_cbuf->len;
115
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents: 107
diff changeset
586 if (p->tx_bufsize)
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents: 107
diff changeset
587 p->tx_count = out_cbuf->nb;
86
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST
jlarmour
parents: 82
diff changeset
588 else
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST
jlarmour
parents: 82
diff changeset
589 p->tx_count = 0;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST
jlarmour
parents: 82
diff changeset
590 }
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST
jlarmour
parents: 82
diff changeset
591 break;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST
jlarmour
parents: 82
diff changeset
592
2
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
593 case CYG_IO_GET_CONFIG_SERIAL_OUTPUT_DRAIN:
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
594 // Wait for any pending output to complete
86
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST
jlarmour
parents: 82
diff changeset
595 if (out_cbuf->len == 0) break; // Nothing to do if not buffered
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST
jlarmour
parents: 82
diff changeset
596 cyg_drv_mutex_lock(&out_cbuf->lock); // Stop any further output processing
2
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
597 cyg_drv_dsr_lock();
115
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents: 107
diff changeset
598 while (out_cbuf->pending || (out_cbuf->nb > 0)) {
86
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST
jlarmour
parents: 82
diff changeset
599 out_cbuf->waiting = true;
115
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents: 107
diff changeset
600 if(!cyg_drv_cond_wait(&out_cbuf->wait) )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents: 107
diff changeset
601 res = -EINTR;
2
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
602 }
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
603 cyg_drv_dsr_unlock();
86
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST
jlarmour
parents: 82
diff changeset
604 cyg_drv_mutex_unlock(&out_cbuf->lock);
2
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
605 break;
86
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST
jlarmour
parents: 82
diff changeset
606
2
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
607 case CYG_IO_GET_CONFIG_SERIAL_INPUT_FLUSH:
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
608 // Flush any buffered input
86
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST
jlarmour
parents: 82
diff changeset
609 if (in_cbuf->len == 0) break; // Nothing to do if not buffered
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST
jlarmour
parents: 82
diff changeset
610 cyg_drv_mutex_lock(&in_cbuf->lock); // Stop any further input processing
2
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
611 cyg_drv_dsr_lock();
86
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST
jlarmour
parents: 82
diff changeset
612 if (in_cbuf->waiting) {
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST
jlarmour
parents: 82
diff changeset
613 in_cbuf->abort = true;
1054
c706e0d163d7 * src/common/serial.c: Changed all calls to cyg_drv_cond_signal()
nickg
parents: 1035
diff changeset
614 cyg_drv_cond_broadcast(&in_cbuf->wait);
86
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST
jlarmour
parents: 82
diff changeset
615 in_cbuf->waiting = false;
2
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
616 }
115
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents: 107
diff changeset
617 in_cbuf->get = in_cbuf->put = in_cbuf->nb = 0; // Flush buffered input
864
c398056d144d * src/common/serial.c (serial_get_config): For both INPUT_FLUSH
jlarmour
parents: 852
diff changeset
618
c398056d144d * src/common/serial.c (serial_get_config): For both INPUT_FLUSH
jlarmour
parents: 852
diff changeset
619 // Pass to the hardware driver in case it wants to flush FIFOs etc.
c398056d144d * src/common/serial.c (serial_get_config): For both INPUT_FLUSH
jlarmour
parents: 852
diff changeset
620 (funs->set_config)(chan,
c398056d144d * src/common/serial.c (serial_get_config): For both INPUT_FLUSH
jlarmour
parents: 852
diff changeset
621 CYG_IO_SET_CONFIG_SERIAL_INPUT_FLUSH,
c398056d144d * src/common/serial.c (serial_get_config): For both INPUT_FLUSH
jlarmour
parents: 852
diff changeset
622 NULL, NULL);
2
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
623 cyg_drv_dsr_unlock();
86
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST
jlarmour
parents: 82
diff changeset
624 cyg_drv_mutex_unlock(&in_cbuf->lock);
1035
f81e485de35c Restart RX after flush
gthomas
parents: 868
diff changeset
625 #ifdef CYGPKG_IO_SERIAL_FLOW_CONTROL
f81e485de35c Restart RX after flush
gthomas
parents: 868
diff changeset
626 // Restart receiver if it was shutdown
f81e485de35c Restart RX after flush
gthomas
parents: 868
diff changeset
627 if ((chan->flow_desc.flags & CYG_SERIAL_FLOW_IN_THROTTLED) != 0) {
f81e485de35c Restart RX after flush
gthomas
parents: 868
diff changeset
628 restart_rx( chan, false );
f81e485de35c Restart RX after flush
gthomas
parents: 868
diff changeset
629 }
f81e485de35c Restart RX after flush
gthomas
parents: 868
diff changeset
630 #endif
2
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
631 break;
86
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST
jlarmour
parents: 82
diff changeset
632
2
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
633 case CYG_IO_GET_CONFIG_SERIAL_ABORT:
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
634 // Abort any outstanding I/O, including blocked reads
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
635 // Caution - assumed to be called from 'timeout' (i.e. DSR) code
86
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST
jlarmour
parents: 82
diff changeset
636 if (in_cbuf->len != 0) {
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST
jlarmour
parents: 82
diff changeset
637 in_cbuf->abort = true;
1054
c706e0d163d7 * src/common/serial.c: Changed all calls to cyg_drv_cond_signal()
nickg
parents: 1035
diff changeset
638 cyg_drv_cond_broadcast(&in_cbuf->wait);
2
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
639 }
86
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST
jlarmour
parents: 82
diff changeset
640 if (out_cbuf->len != 0) {
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST
jlarmour
parents: 82
diff changeset
641 out_cbuf->abort = true;
1054
c706e0d163d7 * src/common/serial.c: Changed all calls to cyg_drv_cond_signal()
nickg
parents: 1035
diff changeset
642 cyg_drv_cond_broadcast(&out_cbuf->wait);
2
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
643 }
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
644 break;
86
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST
jlarmour
parents: 82
diff changeset
645
2
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
646 case CYG_IO_GET_CONFIG_SERIAL_OUTPUT_FLUSH:
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
647 // Throw away any pending output
86
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST
jlarmour
parents: 82
diff changeset
648 if (out_cbuf->len == 0) break; // Nothing to do if not buffered
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST
jlarmour
parents: 82
diff changeset
649 cyg_drv_mutex_lock(&out_cbuf->lock); // Stop any further output processing
2
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
650 cyg_drv_dsr_lock();
115
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents: 107
diff changeset
651 if (out_cbuf->nb > 0) {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents: 107
diff changeset
652 out_cbuf->get = out_cbuf->put = out_cbuf->nb = 0; // Empties queue!
2
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
653 (funs->stop_xmit)(chan); // Done with transmit
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
654 }
864
c398056d144d * src/common/serial.c (serial_get_config): For both INPUT_FLUSH
jlarmour
parents: 852
diff changeset
655 // Pass to the hardware driver in case it wants to flush FIFOs etc.
c398056d144d * src/common/serial.c (serial_get_config): For both INPUT_FLUSH
jlarmour
parents: 852
diff changeset
656 (funs->set_config)(chan,
c398056d144d * src/common/serial.c (serial_get_config): For both INPUT_FLUSH
jlarmour
parents: 852
diff changeset
657 CYG_IO_SET_CONFIG_SERIAL_OUTPUT_FLUSH,
c398056d144d * src/common/serial.c (serial_get_config): For both INPUT_FLUSH
jlarmour
parents: 852
diff changeset
658 NULL, NULL);
86
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST
jlarmour
parents: 82
diff changeset
659 if (out_cbuf->waiting) {
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST
jlarmour
parents: 82
diff changeset
660 out_cbuf->abort = true;
1054
c706e0d163d7 * src/common/serial.c: Changed all calls to cyg_drv_cond_signal()
nickg
parents: 1035
diff changeset
661 cyg_drv_cond_broadcast(&out_cbuf->wait);
86
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST
jlarmour
parents: 82
diff changeset
662 out_cbuf->waiting = false;
2
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
663 }
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
664 cyg_drv_dsr_unlock();
86
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST
jlarmour
parents: 82
diff changeset
665 cyg_drv_mutex_unlock(&out_cbuf->lock);
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST
jlarmour
parents: 82
diff changeset
666 break;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST
jlarmour
parents: 82
diff changeset
667
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST
jlarmour
parents: 82
diff changeset
668 #ifdef CYGOPT_IO_SERIAL_SUPPORT_NONBLOCKING
115
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents: 107
diff changeset
669 case CYG_IO_GET_CONFIG_READ_BLOCKING:
86
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST
jlarmour
parents: 82
diff changeset
670 if (*len < sizeof(cyg_uint32)) {
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST
jlarmour
parents: 82
diff changeset
671 return -EINVAL;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST
jlarmour
parents: 82
diff changeset
672 }
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST
jlarmour
parents: 82
diff changeset
673 *(cyg_uint32*)xbuf = (in_cbuf->blocking) ? 1 : 0;
2
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
674 break;
86
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST
jlarmour
parents: 82
diff changeset
675
115
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents: 107
diff changeset
676 case CYG_IO_GET_CONFIG_WRITE_BLOCKING:
86
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST
jlarmour
parents: 82
diff changeset
677 if (*len < sizeof(cyg_uint32)) {
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST
jlarmour
parents: 82
diff changeset
678 return -EINVAL;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST
jlarmour
parents: 82
diff changeset
679 }
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST
jlarmour
parents: 82
diff changeset
680 *(cyg_uint32*)xbuf = (out_cbuf->blocking) ? 1 : 0;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST
jlarmour
parents: 82
diff changeset
681 break;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST
jlarmour
parents: 82
diff changeset
682 #endif // CYGOPT_IO_SERIAL_SUPPORT_NONBLOCKING
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST
jlarmour
parents: 82
diff changeset
683
2
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
684 default:
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
685 res = -EINVAL;
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
686 }
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
687 return res;
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
688 }
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
689
115
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents: 107
diff changeset
690
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents: 107
diff changeset
691 // ---------------------------------------------------------------------------
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents: 107
diff changeset
692
2
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
693 static Cyg_ErrNo
128
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST
jlarmour
parents: 115
diff changeset
694 serial_set_config(cyg_io_handle_t handle, cyg_uint32 key, const void *xbuf,
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST
jlarmour
parents: 115
diff changeset
695 cyg_uint32 *len)
2
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
696 {
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
697 Cyg_ErrNo res = ENOERR;
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
698 cyg_devtab_entry_t *t = (cyg_devtab_entry_t *)handle;
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
699 serial_channel *chan = (serial_channel *)t->priv;
86
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST
jlarmour
parents: 82
diff changeset
700 #ifdef CYGOPT_IO_SERIAL_SUPPORT_NONBLOCKING
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST
jlarmour
parents: 82
diff changeset
701 cbuf_t *out_cbuf = &chan->out_cbuf;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST
jlarmour
parents: 82
diff changeset
702 cbuf_t *in_cbuf = &chan->in_cbuf;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST
jlarmour
parents: 82
diff changeset
703 #endif
2
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
704 serial_funs *funs = chan->funs;
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
705
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
706 switch (key) {
86
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST
jlarmour
parents: 82
diff changeset
707 #ifdef CYGOPT_IO_SERIAL_SUPPORT_NONBLOCKING
115
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents: 107
diff changeset
708 case CYG_IO_SET_CONFIG_READ_BLOCKING:
86
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST
jlarmour
parents: 82
diff changeset
709 if (*len < sizeof(cyg_uint32) || 0 == in_cbuf->len) {
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST
jlarmour
parents: 82
diff changeset
710 return -EINVAL;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST
jlarmour
parents: 82
diff changeset
711 }
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST
jlarmour
parents: 82
diff changeset
712 in_cbuf->blocking = (1 == *(cyg_uint32*)xbuf) ? true : false;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST
jlarmour
parents: 82
diff changeset
713 break;
115
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents: 107
diff changeset
714 case CYG_IO_SET_CONFIG_WRITE_BLOCKING:
86
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST
jlarmour
parents: 82
diff changeset
715 if (*len < sizeof(cyg_uint32) || 0 == out_cbuf->len) {
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST
jlarmour
parents: 82
diff changeset
716 return -EINVAL;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST
jlarmour
parents: 82
diff changeset
717 }
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST
jlarmour
parents: 82
diff changeset
718 out_cbuf->blocking = (1 == *(cyg_uint32*)xbuf) ? true : false;
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jlarmour
parents: 82
diff changeset
719 break;
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jlarmour
parents: 82
diff changeset
720 #endif // CYGOPT_IO_SERIAL_SUPPORT_NONBLOCKING
115
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jlarmour
parents: 107
diff changeset
721
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jlarmour
parents: 107
diff changeset
722 #ifdef CYGPKG_IO_SERIAL_FLOW_CONTROL
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jlarmour
parents: 107
diff changeset
723 case CYG_IO_SET_CONFIG_SERIAL_FLOW_CONTROL_METHOD:
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jlarmour
parents: 107
diff changeset
724 {
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jlarmour
parents: 107
diff changeset
725 cyg_uint32 *f = (cyg_uint32 *)xbuf;
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jlarmour
parents: 107
diff changeset
726
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jlarmour
parents: 107
diff changeset
727 if (*len < sizeof(*f))
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jlarmour
parents: 107
diff changeset
728 return -EINVAL;
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jlarmour
parents: 107
diff changeset
729
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jlarmour
parents: 107
diff changeset
730 cyg_drv_dsr_lock();
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jlarmour
parents: 107
diff changeset
731
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jlarmour
parents: 107
diff changeset
732 chan->config.flags &= ~(CYGNUM_SERIAL_FLOW_XONXOFF_RX|
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jlarmour
parents: 107
diff changeset
733 CYGNUM_SERIAL_FLOW_XONXOFF_TX|
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parents: 107
diff changeset
734 CYGNUM_SERIAL_FLOW_RTSCTS_RX|
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jlarmour
parents: 107
diff changeset
735 CYGNUM_SERIAL_FLOW_RTSCTS_TX|
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parents: 107
diff changeset
736 CYGNUM_SERIAL_FLOW_DSRDTR_RX|
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parents: 107
diff changeset
737 CYGNUM_SERIAL_FLOW_DSRDTR_TX);
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jlarmour
parents: 107
diff changeset
738 chan->config.flags |= (*f & (
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jlarmour
parents: 107
diff changeset
739 #ifdef CYGOPT_IO_SERIAL_FLOW_CONTROL_SOFTWARE
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parents: 107
diff changeset
740 CYGNUM_SERIAL_FLOW_XONXOFF_RX|
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parents: 107
diff changeset
741 CYGNUM_SERIAL_FLOW_XONXOFF_TX|
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parents: 107
diff changeset
742 #endif
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parents: 107
diff changeset
743 #ifdef CYGOPT_IO_SERIAL_FLOW_CONTROL_HW
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parents: 107
diff changeset
744 CYGNUM_SERIAL_FLOW_RTSCTS_RX|
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parents: 107
diff changeset
745 CYGNUM_SERIAL_FLOW_RTSCTS_TX|
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parents: 107
diff changeset
746 CYGNUM_SERIAL_FLOW_DSRDTR_RX|
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parents: 107
diff changeset
747 CYGNUM_SERIAL_FLOW_DSRDTR_TX|
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parents: 107
diff changeset
748 #endif
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jlarmour
parents: 107
diff changeset
749 0));
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jlarmour
parents: 107
diff changeset
750 #ifdef CYGOPT_IO_SERIAL_FLOW_CONTROL_HW
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parents: 107
diff changeset
751 // up to hardware driver to clear flags if rejected
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jlarmour
parents: 107
diff changeset
752 res = (funs->set_config)(chan,
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jlarmour
parents: 107
diff changeset
753 CYG_IO_SET_CONFIG_SERIAL_HW_FLOW_CONFIG,
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jlarmour
parents: 107
diff changeset
754 NULL, NULL);
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jlarmour
parents: 107
diff changeset
755 #endif
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jlarmour
parents: 107
diff changeset
756 cyg_drv_dsr_unlock();
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jlarmour
parents: 107
diff changeset
757 }
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jlarmour
parents: 107
diff changeset
758 break;
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jlarmour
parents: 107
diff changeset
759
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jlarmour
parents: 107
diff changeset
760 case CYG_IO_SET_CONFIG_SERIAL_FLOW_CONTROL_FORCE:
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jlarmour
parents: 107
diff changeset
761 {
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jlarmour
parents: 107
diff changeset
762 cyg_uint32 *f = (cyg_uint32 *)xbuf;
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parents: 107
diff changeset
763
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jlarmour
parents: 107
diff changeset
764 if (*len < sizeof(*f))
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jlarmour
parents: 107
diff changeset
765 return -EINVAL;
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parents: 107
diff changeset
766
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jlarmour
parents: 107
diff changeset
767 cyg_drv_dsr_lock();
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jlarmour
parents: 107
diff changeset
768 switch (*f) {
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parents: 107
diff changeset
769 case CYGNUM_SERIAL_FLOW_THROTTLE_RX:
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jlarmour
parents: 107
diff changeset
770 throttle_rx( chan, true );
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parents: 107
diff changeset
771 break;
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jlarmour
parents: 107
diff changeset
772 case CYGNUM_SERIAL_FLOW_RESTART_RX:
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parents: 107
diff changeset
773 restart_rx( chan, true );
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parents: 107
diff changeset
774 break;
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parents: 107
diff changeset
775 case CYGNUM_SERIAL_FLOW_THROTTLE_TX:
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parents: 107
diff changeset
776 throttle_tx( chan );
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parents: 107
diff changeset
777 break;
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parents: 107
diff changeset
778 case CYGNUM_SERIAL_FLOW_RESTART_TX:
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parents: 107
diff changeset
779 restart_tx( chan );
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parents: 107
diff changeset
780 break;
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parents: 107
diff changeset
781 default:
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parents: 107
diff changeset
782 res = -EINVAL;
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parents: 107
diff changeset
783 break;
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jlarmour
parents: 107
diff changeset
784 }
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jlarmour
parents: 107
diff changeset
785 cyg_drv_dsr_unlock();
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jlarmour
parents: 107
diff changeset
786 }
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jlarmour
parents: 107
diff changeset
787 break;
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jlarmour
parents: 107
diff changeset
788 #endif // CYGPKG_IO_SERIAL_FLOW_CONTROL
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parents: 107
diff changeset
789
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jlarmour
parents: 107
diff changeset
790 #ifdef CYGOPT_IO_SERIAL_SUPPORT_LINE_STATUS
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parents: 107
diff changeset
791 case CYG_IO_SET_CONFIG_SERIAL_STATUS_CALLBACK:
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jlarmour
parents: 107
diff changeset
792 {
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parents: 107
diff changeset
793 cyg_serial_line_status_callback_fn_t newfn;
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jlarmour
parents: 107
diff changeset
794 CYG_ADDRWORD newpriv;
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parents: 107
diff changeset
795 cyg_serial_line_status_callback_t *tmp =
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
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parents: 107
diff changeset
796 (cyg_serial_line_status_callback_t *)xbuf;
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jlarmour
parents: 107
diff changeset
797
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jlarmour
parents: 107
diff changeset
798 if ( *len < sizeof(*tmp) )
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jlarmour
parents: 107
diff changeset
799 return -EINVAL;
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parents: 107
diff changeset
800
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jlarmour
parents: 107
diff changeset
801 newfn = tmp->fn;
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jlarmour
parents: 107
diff changeset
802 newpriv = tmp->priv;
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jlarmour
parents: 107
diff changeset
803
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jlarmour
parents: 107
diff changeset
804 // prevent callbacks while we do this
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jlarmour
parents: 107
diff changeset
805 cyg_drv_dsr_lock();
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jlarmour
parents: 107
diff changeset
806 // store old callbacks in same structure
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jlarmour
parents: 107
diff changeset
807 tmp->fn = chan->status_callback;
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jlarmour
parents: 107
diff changeset
808 tmp->priv = chan->status_callback_priv;
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jlarmour
parents: 107
diff changeset
809 chan->status_callback = newfn;
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jlarmour
parents: 107
diff changeset
810 chan->status_callback_priv = newpriv;
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jlarmour
parents: 107
diff changeset
811 cyg_drv_dsr_unlock();
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jlarmour
parents: 107
diff changeset
812 *len = sizeof(*tmp);
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jlarmour
parents: 107
diff changeset
813 }
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jlarmour
parents: 107
diff changeset
814 break;
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jlarmour
parents: 107
diff changeset
815 #endif
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parents: 107
diff changeset
816
2
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
817 default:
115
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parents: 107
diff changeset
818 // pass down to lower layers
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parents: 107
diff changeset
819 return (funs->set_config)(chan, key, xbuf, len);
2
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
820 }
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
821 return res;
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
822 }
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
823
115
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jlarmour
parents: 107
diff changeset
824 // ---------------------------------------------------------------------------
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parents: 107
diff changeset
825
2
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
826 static void
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
827 serial_xmt_char(serial_channel *chan)
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
828 {
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
829 cbuf_t *cbuf = &chan->out_cbuf;
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
830 serial_funs *funs = chan->funs;
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
831 unsigned char c;
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
832 int space;
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
833
128
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST
jlarmour
parents: 115
diff changeset
834 #if CYGINT_IO_SERIAL_BLOCK_TRANSFER
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parents: 115
diff changeset
835 CYG_ASSERT(false == cbuf->block_mode_xfer_running,
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jlarmour
parents: 115
diff changeset
836 "Attempting char xmt while block transfer is running");
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jlarmour
parents: 115
diff changeset
837 #endif
115
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jlarmour
parents: 107
diff changeset
838 #ifdef CYGOPT_IO_SERIAL_FLOW_CONTROL_SOFTWARE
128
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST
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parents: 115
diff changeset
839 // if we are required to send an XON/XOFF char, send it before
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jlarmour
parents: 115
diff changeset
840 // anything else
115
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jlarmour
parents: 107
diff changeset
841 // FIXME: what if XON gets corrupted in transit to the other end?
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parents: 107
diff changeset
842 // Should we resend XON even though the other end may not be wanting
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jlarmour
parents: 107
diff changeset
843 // to send us stuff at this point?
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jlarmour
parents: 107
diff changeset
844 if ( chan->config.flags & CYGNUM_SERIAL_FLOW_XONXOFF_RX ) {
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jlarmour
parents: 107
diff changeset
845 if ( chan->flow_desc.xchar ) {
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jlarmour
parents: 107
diff changeset
846 if ( (funs->putc)(chan, chan->flow_desc.xchar) ) {
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jlarmour
parents: 107
diff changeset
847 chan->flow_desc.xchar = '\0';
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jlarmour
parents: 107
diff changeset
848 } else { // otherwise there's no space and we have to wait
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jlarmour
parents: 107
diff changeset
849 return;
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jlarmour
parents: 107
diff changeset
850 }
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jlarmour
parents: 107
diff changeset
851 }
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jlarmour
parents: 107
diff changeset
852 }
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jlarmour
parents: 107
diff changeset
853 #endif
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jlarmour
parents: 107
diff changeset
854 #ifdef CYGPKG_IO_SERIAL_FLOW_CONTROL
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jlarmour
parents: 107
diff changeset
855 // if we're meant to be throttled, just stop and leave
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jlarmour
parents: 107
diff changeset
856 if ( chan->flow_desc.flags & CYG_SERIAL_FLOW_OUT_THROTTLED ) {
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parents: 107
diff changeset
857 (funs->stop_xmit)(chan); // Stop transmitting for now
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parents: 107
diff changeset
858 return;
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parents: 107
diff changeset
859 }
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parents: 107
diff changeset
860 #endif
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parents: 107
diff changeset
861 while (cbuf->nb > 0) {
2
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parents:
diff changeset
862 c = cbuf->data[cbuf->get];
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parents:
diff changeset
863 if ((funs->putc)(chan, c)) {
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jlarmour
parents:
diff changeset
864 cbuf->get++;
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jlarmour
parents:
diff changeset
865 if (cbuf->get == cbuf->len) cbuf->get = 0;
115
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parents: 107
diff changeset
866 cbuf->nb--;
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parents: 107
diff changeset
867 } else {
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parents: 107
diff changeset
868 // See if there is now enough room to restart writer
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parents: 107
diff changeset
869 space = cbuf->len - cbuf->nb;
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parents: 107
diff changeset
870 if (space >= cbuf->low_water) {
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parents: 107
diff changeset
871 if (cbuf->waiting) {
2
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jlarmour
parents:
diff changeset
872 cbuf->waiting = false;
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jlarmour
parents:
diff changeset
873 cyg_drv_cond_broadcast(&cbuf->wait);
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parents:
diff changeset
874 }
115
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parents: 107
diff changeset
875 #ifdef CYGPKG_IO_SERIAL_SELECT_SUPPORT
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parents: 107
diff changeset
876 cyg_selwakeup( &cbuf->selinfo );
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diff changeset
877 #endif
2
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jlarmour
parents:
diff changeset
878 }
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jlarmour
parents:
diff changeset
879 return; // Need to wait for more space
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jlarmour
parents:
diff changeset
880 }
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jlarmour
parents:
diff changeset
881 }
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jlarmour
parents:
diff changeset
882 (funs->stop_xmit)(chan); // Done with transmit
115
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parents: 107
diff changeset
883
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parents: 107
diff changeset
884 // must signal waiters, and wake up selecters for the case when
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parents: 107
diff changeset
885 // this was the last char to be sent and they hadn't been signalled
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parents: 107
diff changeset
886 // before (e.g. because of flow control)
2
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jlarmour
parents:
diff changeset
887 if (cbuf->waiting) {
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jlarmour
parents:
diff changeset
888 cbuf->waiting = false;
1054
c706e0d163d7 * src/common/serial.c: Changed all calls to cyg_drv_cond_signal()
nickg
parents: 1035
diff changeset
889 cyg_drv_cond_broadcast(&cbuf->wait);
2
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jlarmour
parents:
diff changeset
890 }
115
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parents: 107
diff changeset
891 #ifdef CYGPKG_IO_SERIAL_SELECT_SUPPORT
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parents: 107
diff changeset
892 cyg_selwakeup( &cbuf->selinfo );
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parents: 107
diff changeset
893 #endif
2
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jlarmour
parents:
diff changeset
894 }
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parents:
diff changeset
895
115
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parents: 107
diff changeset
896 // ---------------------------------------------------------------------------
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parents: 107
diff changeset
897
2
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jlarmour
parents:
diff changeset
898 static void
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
899 serial_rcv_char(serial_channel *chan, unsigned char c)
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
900 {
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
901 cbuf_t *cbuf = &chan->in_cbuf;
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
902
128
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST
jlarmour
parents: 115
diff changeset
903 #if CYGINT_IO_SERIAL_BLOCK_TRANSFER
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST
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parents: 115
diff changeset
904 CYG_ASSERT(false == cbuf->block_mode_xfer_running,
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST
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parents: 115
diff changeset
905 "Attempting char rcv while block transfer is running");
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST
jlarmour
parents: 115
diff changeset
906 #endif
115
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
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parents: 107
diff changeset
907 #ifdef CYGOPT_IO_SERIAL_FLOW_CONTROL_SOFTWARE
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parents: 107
diff changeset
908 // for software flow control, if the driver returns one of the characters
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jlarmour
parents: 107
diff changeset
909 // we act on it and then drop it (the app must not see it)
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
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parents: 107
diff changeset
910 if ( chan->config.flags & CYGNUM_SERIAL_FLOW_XONXOFF_TX ) {
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parents: 107
diff changeset
911 if ( c == CYGDAT_IO_SERIAL_FLOW_CONTROL_XOFF_CHAR ) {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents: 107
diff changeset
912 throttle_tx( chan );
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parents: 107
diff changeset
913 return; // it wasn't a "real" character
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
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parents: 107
diff changeset
914 } else if ( c == CYGDAT_IO_SERIAL_FLOW_CONTROL_XON_CHAR ) {
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parents: 107
diff changeset
915 restart_tx( chan );
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parents: 107
diff changeset
916 return; // it wasn't a "real" character
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jlarmour
parents: 107
diff changeset
917 }
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jlarmour
parents: 107
diff changeset
918 }
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parents: 107
diff changeset
919 #endif
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parents: 107
diff changeset
920 #ifdef CYGPKG_IO_SERIAL_FLOW_CONTROL
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
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parents: 107
diff changeset
921 // If we've hit the high water mark, tell the other side to stop
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
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parents: 107
diff changeset
922 if ( cbuf->nb >= cbuf->high_water ) {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
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parents: 107
diff changeset
923 throttle_rx( chan, false );
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents: 107
diff changeset
924 }
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parents: 107
diff changeset
925 #endif
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parents: 107
diff changeset
926 #ifdef CYGPKG_IO_SERIAL_SELECT_SUPPORT
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
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parents: 107
diff changeset
927 // Wake up any pending selectors if we are about to
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
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parents: 107
diff changeset
928 // put some data into a previously empty buffer.
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents: 107
diff changeset
929 if( cbuf->nb == 0 )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents: 107
diff changeset
930 cyg_selwakeup( &cbuf->selinfo );
86
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST
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parents: 82
diff changeset
931 #endif
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jlarmour
parents: 82
diff changeset
932
115
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents: 107
diff changeset
933 // If the flow control is not enabled/sufficient and the buffer is
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
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parents: 107
diff changeset
934 // already full, just throw new characters away.
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents: 107
diff changeset
935
128
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST
jlarmour
parents: 115
diff changeset
936 if ( cbuf->nb < cbuf->len ) {
115
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents: 107
diff changeset
937 cbuf->data[cbuf->put++] = c;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
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parents: 107
diff changeset
938 if (cbuf->put == cbuf->len) cbuf->put = 0;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents: 107
diff changeset
939 cbuf->nb++;
128
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST
jlarmour
parents: 115
diff changeset
940 } // note trailing else
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST
jlarmour
parents: 115
diff changeset
941 #ifdef CYGOPT_IO_SERIAL_SUPPORT_LINE_STATUS
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST
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parents: 115
diff changeset
942 else {
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST
jlarmour
parents: 115
diff changeset
943 // Overrun. Report the error.
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST
jlarmour
parents: 115
diff changeset
944 cyg_serial_line_status_t stat;
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST
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parents: 115
diff changeset
945 stat.which = CYGNUM_SERIAL_STATUS_OVERRUNERR;
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST
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parents: 115
diff changeset
946 serial_indicate_status(chan, &stat);
115
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
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parents: 107
diff changeset
947 }
128
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST
jlarmour
parents: 115
diff changeset
948 #endif
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST
jlarmour
parents: 115
diff changeset
949
2
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
950 if (cbuf->waiting) {
20
5f5102441818 Merge from eCos master repository on 1999-07-02-23:17:07-BST
jlarmour
parents: 4
diff changeset
951 #ifdef XX_CYGDBG_DIAG_BUF
5f5102441818 Merge from eCos master repository on 1999-07-02-23:17:07-BST
jlarmour
parents: 4
diff changeset
952 extern int enable_diag_uart;
5f5102441818 Merge from eCos master repository on 1999-07-02-23:17:07-BST
jlarmour
parents: 4
diff changeset
953 int _enable = enable_diag_uart;
5f5102441818 Merge from eCos master repository on 1999-07-02-23:17:07-BST
jlarmour
parents: 4
diff changeset
954 int _time, _stime;
5f5102441818 Merge from eCos master repository on 1999-07-02-23:17:07-BST
jlarmour
parents: 4
diff changeset
955 externC cyg_tick_count_t cyg_current_time(void);
5f5102441818 Merge from eCos master repository on 1999-07-02-23:17:07-BST
jlarmour
parents: 4
diff changeset
956 enable_diag_uart = 0;
5f5102441818 Merge from eCos master repository on 1999-07-02-23:17:07-BST
jlarmour
parents: 4
diff changeset
957 HAL_CLOCK_READ(&_time);
5f5102441818 Merge from eCos master repository on 1999-07-02-23:17:07-BST
jlarmour
parents: 4
diff changeset
958 _stime = (int)cyg_current_time();
5f5102441818 Merge from eCos master repository on 1999-07-02-23:17:07-BST
jlarmour
parents: 4
diff changeset
959 diag_printf("Signal reader - time: %x.%x\n", _stime, _time);
5f5102441818 Merge from eCos master repository on 1999-07-02-23:17:07-BST
jlarmour
parents: 4
diff changeset
960 enable_diag_uart = _enable;
5f5102441818 Merge from eCos master repository on 1999-07-02-23:17:07-BST
jlarmour
parents: 4
diff changeset
961 #endif // CYGDBG_DIAG_BUF
2
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
962 cbuf->waiting = false;
1054
c706e0d163d7 * src/common/serial.c: Changed all calls to cyg_drv_cond_signal()
nickg
parents: 1035
diff changeset
963 cyg_drv_cond_broadcast(&cbuf->wait);
2
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
964 }
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
965 }
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents:
diff changeset
966
86
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST
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parents: 82
diff changeset
967 //----------------------------------------------------------------------------
115
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parents: 107
diff changeset
968 // Flow control indication callback
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jlarmour
parents: 107
diff changeset
969
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parents: 107
diff changeset
970 #ifdef CYGOPT_IO_SERIAL_SUPPORT_LINE_STATUS
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parents: 107
diff changeset
971 static void
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jlarmour
parents: 107
diff changeset
972 serial_indicate_status(serial_channel *chan, cyg_serial_line_status_t *s )
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parents: 107
diff changeset
973 {
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parents: 107
diff changeset
974 #ifdef CYGPKG_IO_SERIAL_FLOW_CONTROL
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
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parents: 107
diff changeset
975 if ( CYGNUM_SERIAL_STATUS_FLOW == s->which ) {
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jlarmour
parents: 107
diff changeset
976 if ( s->value )
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jlarmour
parents: 107
diff changeset
977 restart_tx( chan );
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
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parents: 107
diff changeset
978 else
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parents: 107
diff changeset
979 throttle_tx( chan );
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parents: 107
diff changeset
980 }
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jlarmour
parents: 107
diff changeset
981 #endif
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jlarmour
parents: 107
diff changeset
982 if ( chan->status_callback )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents: 107
diff changeset
983 (*chan->status_callback)(s, chan->status_callback_priv);
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents: 107
diff changeset
984 }
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jlarmour
parents: 107
diff changeset
985 #endif // ifdef CYGOPT_IO_SERIAL_SUPPORT_LINE_STATUS
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parents: 107
diff changeset
986
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jlarmour
parents: 107
diff changeset
987 //----------------------------------------------------------------------------
128
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST
jlarmour
parents: 115
diff changeset
988 // Block transfer functions. Not all drivers require these. Those that
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST
jlarmour
parents: 115
diff changeset
989 // do must follow the required semantics:
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST
jlarmour
parents: 115
diff changeset
990 //
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST
jlarmour
parents: 115
diff changeset
991 // Attempt to transfer as much via the block transfer function as
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST
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parents: 115
diff changeset
992 // possible, _but_ if that fails, do the remaining bytes via the
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST
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parents: 115
diff changeset
993 // single-char function. That ensures that all policy decisions can be
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST
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parents: 115
diff changeset
994 // made in this driver, and not in the device driver.
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST
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parents: 115
diff changeset
995 //
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parents: 115
diff changeset
996 // Note: if the driver uses DMA for transmission, an initial failing
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST
jlarmour
parents: 115
diff changeset
997 // call to the xmt_req function must cause the start_xmit function to
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST
jlarmour
parents: 115
diff changeset
998 // fall-back to regular CPU-interrupt based single-character
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diff changeset
999 // transmission.
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1000
115
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1001 #if CYGINT_IO_SERIAL_BLOCK_TRANSFER
86
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1002
128
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1003 static rcv_req_reply_t
86
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1004 serial_data_rcv_req(serial_channel *chan, int avail,
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1005 int* space_avail, unsigned char** space)
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1006 {
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1007 cbuf_t *cbuf = &chan->in_cbuf;
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1008 int gap;
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1009
128
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1010 #ifdef CYGOPT_IO_SERIAL_FLOW_CONTROL_SOFTWARE
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1011 // When there is software flow-control, force the serial device
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1012 // driver to use the single-char xmt/rcv functions, since these
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1013 // have to make policy decision based on the data. Rcv function
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1014 // may also have to transmit data to throttle the xmitter.
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1015 if (chan->config.flags & (CYGNUM_SERIAL_FLOW_XONXOFF_TX|CYGNUM_SERIAL_FLOW_XONXOFF_RX))
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1016 return CYG_RCV_DISABLED;
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1017 #endif
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1018
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1019 CYG_ASSERT(false == cbuf->block_mode_xfer_running,
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1020 "Attempting new block transfer while another is running");
86
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1021 // Check for space
115
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1022 gap = cbuf->nb;
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1023 if (gap == cbuf->len)
128
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1024 return CYG_RCV_FULL;
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1025
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1026 #ifdef CYGDBG_USE_ASSERTS
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1027 cbuf->block_mode_xfer_running = true;
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1028 #endif
86
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1029
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1030 if (0 == gap) {
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1031 // Buffer is empty. Reset put/get indexes to get max transfer in
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diff changeset
1032 // one chunk.
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1033 cbuf->get = 0;
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1034 cbuf->put = 0;
115
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diff changeset
1035 gap = cbuf->len;
86
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1036 } else {
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1037 // Free space (G = get, P = put, x = data, . = empty)
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1038 // positive: xxxxP.....Gxxx
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1039 // negative: ..GxxxxxP..... [offer last chunk only]
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1040
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1041 // First try for a gap between put and get locations
115
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1042 gap = cbuf->get - cbuf->put;
86
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1043 if (gap < 0) {
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1044 // If failed, the gap is between put and the end of buffer
107
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1045 gap = cbuf->len - cbuf->put;
86
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1046 }
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1047 }
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1048
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1049 if (avail < gap) gap = avail; // bound by what's available from hw
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1050
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1051 *space_avail = gap;
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1052 *space = &cbuf->data[cbuf->put];
128
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1053
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1054 CYG_ASSERT((gap+cbuf->nb) <= cbuf->len, "Buffer will overflow");
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1055 CYG_ASSERT(cbuf->put < cbuf->len, "Invalid put ptr");
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1056 CYG_ASSERT(cbuf->get < cbuf->len, "Invalid get ptr");
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1057
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1058 return CYG_RCV_OK;
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1059 }
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1060
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1061 static void
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1062 serial_data_rcv_done(serial_channel *chan, int chars_rcvd)
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1063 {
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1064 cbuf_t *cbuf = &chan->in_cbuf;
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1065
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1066 cbuf->put += chars_rcvd;
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1067 cbuf->nb += chars_rcvd;
86
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1068
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1069 if (cbuf->put == cbuf->len) cbuf->put = 0;
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1070
128
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diff changeset
1071 CYG_ASSERT(cbuf->nb <= cbuf->len, "Buffer overflow");
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1072 CYG_ASSERT(cbuf->put < cbuf->len, "Invalid put ptr");
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1073 CYG_ASSERT(cbuf->get < cbuf->len, "Invalid get ptr");
86
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1074
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1075 if (cbuf->waiting) {
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1076 cbuf->waiting = false;
1054
c706e0d163d7 * src/common/serial.c: Changed all calls to cyg_drv_cond_signal()
nickg
parents: 1035
diff changeset
1077 cyg_drv_cond_broadcast(&cbuf->wait);
86
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1078 }
128
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diff changeset
1079 #ifdef CYGPKG_IO_SERIAL_FLOW_CONTROL
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1080 // If we've hit the high water mark, tell the other side to stop
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1081 if ( cbuf->nb >= cbuf->high_water ) {
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1082 throttle_rx( chan, false );
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1083 }
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1084 #endif
115
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diff changeset
1085 #ifdef CYGPKG_IO_SERIAL_SELECT_SUPPORT
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1086 // Wake up any pending selectors if we have
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diff changeset
1087 // put some data into a previously empty buffer.
128
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1088 if (chars_rcvd == cbuf->nb)
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diff changeset
1089 cyg_selwakeup( &cbuf->selinfo );
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diff changeset
1090 #endif
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diff changeset
1091
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1092 #ifdef CYGDBG_USE_ASSERTS
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1093 cbuf->block_mode_xfer_running = false;
115
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1094 #endif
86
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1095 }
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1096
128
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1097 static xmt_req_reply_t
86
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1098 serial_data_xmt_req(serial_channel *chan, int space,
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1099 int* chars_avail, unsigned char** chars)
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1100 {
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1101 cbuf_t *cbuf = &chan->out_cbuf;
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1102 int avail;
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1103
128
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1104 #ifdef CYGOPT_IO_SERIAL_FLOW_CONTROL_SOFTWARE
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1105 // When there is software flow-control, force the serial device
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1106 // driver to use the single-char xmt/rcv functions, since these
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1107 // have to make policy decision based on the data. Rcv function
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1108 // may also have to transmit data to throttle the xmitter.
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1109 if (chan->config.flags & (CYGNUM_SERIAL_FLOW_XONXOFF_TX|CYGNUM_SERIAL_FLOW_XONXOFF_RX))
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1110 return CYG_XMT_DISABLED;
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1111 #endif
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1112
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1113 CYG_ASSERT(false == cbuf->block_mode_xfer_running,
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1114 "Attempting new block transfer while another is running");
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1115
86
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1116 // Available data (G = get, P = put, x = data, . = empty)
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1117 // 0: no data
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1118 // negative: xxxxP.....Gxxx [offer last chunk only]
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1119 // positive: ..GxxxxxP.....
115
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1120 if (0 == cbuf->nb)
128
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1121 return CYG_XMT_EMPTY;
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1122
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1123 #ifdef CYGDBG_USE_ASSERTS
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1124 cbuf->block_mode_xfer_running = true;
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diff changeset
1125 #endif
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1126
115
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1127 if (cbuf->get >= cbuf->put) {
86
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1128 avail = cbuf->len - cbuf->get;
115
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1129 } else {
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1130 avail = cbuf->put - cbuf->get;
86
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1131 }
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1132
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1133 if (avail > space) avail = space; // bound by space in hardware
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1134
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1135 *chars_avail = avail;
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1136 *chars = &cbuf->data[cbuf->get];
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1137
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1138 CYG_ASSERT(avail <= cbuf->len, "Avail overflow");
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1139 CYG_ASSERT(cbuf->nb <= cbuf->len, "Buffer overflow");
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1140 CYG_ASSERT(cbuf->put < cbuf->len, "Invalid put ptr");
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1141 CYG_ASSERT(cbuf->get < cbuf->len, "Invalid get ptr");
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1142
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1143 return CYG_XMT_OK;
86
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1144 }
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1145
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1146 static void
128
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1147 serial_data_xmt_done(serial_channel *chan, int chars_sent)
86
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1148 {
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1149 cbuf_t *cbuf = &chan->out_cbuf;
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1150 serial_funs *funs = chan->funs;
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1151 int space;
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1152
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1153 cbuf->get += chars_sent;
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1154 cbuf->nb -= chars_sent;
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1155
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1156 if (cbuf->get == cbuf->len) cbuf->get = 0;
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1157
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1158 CYG_ASSERT(cbuf->nb <= cbuf->len, "Buffer overflow");
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1159 CYG_ASSERT(cbuf->nb >= 0, "Buffer underflow");
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1160 CYG_ASSERT(cbuf->put < cbuf->len, "Invalid put ptr");
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1161 CYG_ASSERT(cbuf->get < cbuf->len, "Invalid get ptr");
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1162
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1163 if (0 == cbuf->nb) {
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1164 (funs->stop_xmit)(chan); // Done with transmit
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1165 cbuf->get = cbuf->put = 0; // reset ptrs if empty
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1166 }
86
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1167
115
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1168 // See if there is now enough room to restart writer
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1169 space = cbuf->len - cbuf->nb;
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1170 if (space >= cbuf->low_water) {
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1171 if (cbuf->waiting) {
86
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1172 cbuf->waiting = false;
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1173 cyg_drv_cond_broadcast(&cbuf->wait);
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1174 }
115
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1175 #ifdef CYGPKG_IO_SERIAL_SELECT_SUPPORT
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1176 cyg_selwakeup( &cbuf->selinfo );
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1177 #endif
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1178 }
128
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1179
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1180 #ifdef CYGDBG_USE_ASSERTS
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1181 cbuf->block_mode_xfer_running = false;
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1182 #endif
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1183 }
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1184
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1185 #endif // CYGINT_IO_SERIAL_BLOCK_TRANSFER
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1186
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1187 // ---------------------------------------------------------------------------
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1188
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1189 // EOF serial.c