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annotate packages/hal/sh/cq7708/current/src/hal_diag.c @ 208:e0c0827131d1 ecos

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Merge from eCos master repository on 2002-05-20-20:11:54-BST
author jlarmour
date Mon, 20 May 2002 22:19:26 +0000
parents 25e238959bae
children d2c90368aeef
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1 //=============================================================================
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2 //
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3 // hal_diag.c
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4 //
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5 // HAL diagnostic output code
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6 //
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7 //=============================================================================
208
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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 //
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13 // eCos is free software; you can redistribute it and/or modify it under
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14 // the terms of the GNU General Public License as published by the Free
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15 // Software Foundation; either version 2 or (at your option) any later version.
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16 //
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17 // eCos is distributed in the hope that it will be useful, but WITHOUT ANY
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18 // WARRANTY; without even the implied warranty of MERCHANTABILITY or
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19 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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20 // for more details.
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21 //
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22 // You should have received a copy of the GNU General Public License along
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23 // with eCos; if not, write to the Free Software Foundation, Inc.,
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24 // 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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25 //
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26 // As a special exception, if other files instantiate templates or use macros
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27 // or inline functions from this file, or you compile this file and link it
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28 // with other works to produce a work based on this file, this file does not
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29 // by itself cause the resulting work to be covered by the GNU General Public
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30 // License. However the source code for this file must still be made available
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31 // in accordance with section (3) of the GNU General Public License.
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32 //
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33 // This exception does not invalidate any other reasons why a work based on
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34 // this file might be covered by the GNU General Public License.
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35 //
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36 // Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
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37 // at http://sources.redhat.com/ecos/ecos-license
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38 // -------------------------------------------
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39 //####ECOSGPLCOPYRIGHTEND####
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40 //=============================================================================
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41 //#####DESCRIPTIONBEGIN####
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42 //
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43 // Author(s): nickg, jskov
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44 // Contributors: nickg, jskov
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45 // Date: 1999-03-23
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46 // Purpose: HAL diagnostic output
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47 // Description: Implementations of HAL diagnostic output support.
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48 //
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49 //####DESCRIPTIONEND####
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50 //
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51 //=============================================================================
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52
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53 #include <pkgconf/hal.h>
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54
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55 #include <cyg/hal/hal_diag.h> // our header.
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56
105
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57 #include <cyg/infra/cyg_type.h> // base types, externC
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58 #include <cyg/hal/hal_io.h> // IO macros
110
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59 #include <cyg/hal/hal_if.h> // calling interface API
105
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60 #include <cyg/hal/hal_intr.h> // Interrupt macros
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61 #include <cyg/hal/sh3_sci.h> // driver API
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62 #include <cyg/hal/hal_misc.h> // Helper functions
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63
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64 #define SCI_BASE ((cyg_uint8*)0xfffffe80)
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65
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66 //-----------------------------------------------------------------------------
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67
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68 void
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69 cyg_hal_plf_comms_init(void)
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70 {
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71 static int initialized = 0;
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72
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73 if (initialized)
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74 return;
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75
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76 initialized = 1;
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77
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78 cyg_hal_plf_sci_init(0, 0, CYGNUM_HAL_INTERRUPT_SCI_RXI, SCI_BASE);
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79 }
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80
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81 //=============================================================================
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82 // Led control
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83 //=============================================================================
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84 #define LED 0xa8000000
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85
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86 void
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87 hal_diag_led_on( void )
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88 {
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89 HAL_WRITE_UINT8(LED, 0x18);
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90 }
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91
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92 void
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93 hal_diag_led_off( void )
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94 {
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95 HAL_WRITE_UINT8(LED, 0);
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96 }
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97
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98 //=============================================================================
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99 // Compatibility with older stubs
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100 //=============================================================================
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101
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102 #ifndef CYGSEM_HAL_VIRTUAL_VECTOR_DIAG
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103
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104 #define CYGPRI_HAL_SH_SH3_SCI_PRIVATE
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105 #include <cyg/hal/sh3_sci.h> // driver API
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106
105
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107 static channel_data_t channel = { (cyg_uint8*)SCI_BASE, 0, 0};
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108
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109 #if defined(CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS)
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110 #include <cyg/hal/hal_stub.h> // hal_output_gdb_string
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111 #endif
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112
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113 #if defined(CYGSEM_HAL_USE_ROM_MONITOR_GDB_stubs)
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114
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115 #define CYG_HAL_DIAG_GDB
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116
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117 #elif defined(CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS)
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118
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119 #define CYG_HAL_DIAG_GDB
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120
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121 #endif
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122
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123 //-----------------------------------------------------------------------------
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124
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125 void hal_diag_init(void)
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126 {
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127 cyg_hal_plf_sci_init_channel(&channel);
94
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128 }
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129
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130 void
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131 hal_diag_write_char_serial( char c )
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132 {
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133 cyg_hal_plf_sci_putc(&channel, c);
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134 }
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135
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136 void
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137 hal_diag_read_char(char *c)
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138 {
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139 *c = (char) cyg_hal_plf_sci_getc(&channel);
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140 }
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141
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142 // Packet function
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143 void
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144 hal_diag_write_char(char c)
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145 {
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146 #ifdef CYG_HAL_DIAG_GDB
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147 static char line[100];
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148 static int pos = 0;
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149
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150 // No need to send CRs
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151 if( c == '\r' ) return;
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152
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153 line[pos++] = c;
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154
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155 if( c == '\n' || pos == sizeof(line) )
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156 {
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157 CYG_INTERRUPT_STATE old;
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158
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159 // Disable interrupts. This prevents GDB trying to interrupt us
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160 // while we are in the middle of sending a packet. The serial
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161 // receive interrupt will be seen when we re-enable interrupts
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162 // later.
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163
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164 #ifdef CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS
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165 CYG_HAL_GDB_ENTER_CRITICAL_IO_REGION(old);
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166 #else
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167 HAL_DISABLE_INTERRUPTS(old);
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168 #endif
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169
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170 while(1)
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171 {
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172 char c1;
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173 static char hex[] = "0123456789ABCDEF";
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174 cyg_uint8 csum = 0;
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175 int i;
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176
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177 cyg_hal_plf_sci_putc(&channel, '$');
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178 cyg_hal_plf_sci_putc(&channel, 'O');
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179 csum += 'O';
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180 for( i = 0; i < pos; i++ )
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181 {
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182 char ch = line[i];
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183 char h = hex[(ch>>4)&0xF];
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184 char l = hex[ch&0xF];
105
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185 cyg_hal_plf_sci_putc(&channel, h);
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186 cyg_hal_plf_sci_putc(&channel, l);
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187 csum += h;
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188 csum += l;
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189 }
105
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190 cyg_hal_plf_sci_putc(&channel, '#');
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191 cyg_hal_plf_sci_putc(&channel, hex[(csum>>4)&0xF]);
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192 cyg_hal_plf_sci_putc(&channel, hex[csum&0xF]);
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193
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194 // Wait for the ACK character '+' from GDB here and handle
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195 // receiving a ^C instead.
105
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196 c1 = (char) cyg_hal_plf_sci_getc(&channel);
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197
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198 if( c1 == '+' )
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199 break; // a good acknowledge
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200
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201 // Check for user break.
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202 if( cyg_hal_is_break( &c1, 1 ) )
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203 cyg_hal_user_break( NULL );
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204
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205 // otherwise, loop round again
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206 }
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207
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208 pos = 0;
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209
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210 // And re-enable interrupts
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211 #ifdef CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS
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212 CYG_HAL_GDB_LEAVE_CRITICAL_IO_REGION(old);
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213 #else
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214 HAL_RESTORE_INTERRUPTS(old);
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215 #endif
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216 }
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217 #else // CYG_HAL_DIAG_GDB
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218 cyg_hal_plf_sci_putc(&channel, c);
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219 #endif
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220 }
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221
105
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222 #endif // CYGSEM_HAL_VIRTUAL_VECTOR_DIAG
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223
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224 //-----------------------------------------------------------------------------
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225 // End of hal_diag.c