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annotate packages/hal/sh/cq7708/current/src/hal_diag.c @ 151:25e238959bae

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Merge from eCos master repository on 2001-02-12-23:44:24-GMT
author jlarmour
date Tue, 13 Feb 2001 01:23:16 +0000
parents 84e4bde58b26
children e0c0827131d1
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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 //=============================================================================
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8 //####COPYRIGHTBEGIN####
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9 //
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10 // -------------------------------------------
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11 // The contents of this file are subject to the Red Hat eCos Public License
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12 // Version 1.1 (the "License"); you may not use this file except in
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13 // compliance with the License. You may obtain a copy of the License at
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14 // http://www.redhat.com/
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15 //
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16 // Software distributed under the License is distributed on an "AS IS"
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17 // basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
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18 // License for the specific language governing rights and limitations under
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19 // the License.
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20 //
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21 // The Original Code is eCos - Embedded Configurable Operating System,
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22 // released September 30, 1998.
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23 //
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24 // The Initial Developer of the Original Code is Red Hat.
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25 // Portions created by Red Hat are
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26 // Copyright (C) 1998, 1999, 2000 Red Hat, Inc.
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27 // All Rights Reserved.
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28 // -------------------------------------------
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29 //
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30 //####COPYRIGHTEND####
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31 //=============================================================================
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32 //#####DESCRIPTIONBEGIN####
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33 //
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34 // Author(s): nickg, jskov
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35 // Contributors: nickg, jskov
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36 // Date: 1999-03-23
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37 // Purpose: HAL diagnostic output
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38 // Description: Implementations of HAL diagnostic output support.
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39 //
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40 //####DESCRIPTIONEND####
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41 //
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42 //=============================================================================
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43
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44 #include <pkgconf/hal.h>
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45
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46 #include <cyg/hal/hal_diag.h> // our header.
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47
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48 #include <cyg/infra/cyg_type.h> // base types, externC
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49 #include <cyg/hal/hal_io.h> // IO macros
110
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50 #include <cyg/hal/hal_if.h> // calling interface API
105
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51 #include <cyg/hal/hal_intr.h> // Interrupt macros
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52 #include <cyg/hal/sh3_sci.h> // driver API
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53 #include <cyg/hal/hal_misc.h> // Helper functions
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54
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55 #define SCI_BASE ((cyg_uint8*)0xfffffe80)
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56
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57 //-----------------------------------------------------------------------------
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58
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59 void
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60 cyg_hal_plf_comms_init(void)
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61 {
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62 static int initialized = 0;
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63
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64 if (initialized)
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65 return;
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66
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67 initialized = 1;
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68
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69 cyg_hal_plf_sci_init(0, 0, CYGNUM_HAL_INTERRUPT_SCI_RXI, SCI_BASE);
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70 }
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71
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72 //=============================================================================
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73 // Led control
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74 //=============================================================================
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75 #define LED 0xa8000000
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76
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77 void
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78 hal_diag_led_on( void )
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79 {
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80 HAL_WRITE_UINT8(LED, 0x18);
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81 }
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82
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83 void
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84 hal_diag_led_off( void )
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85 {
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86 HAL_WRITE_UINT8(LED, 0);
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87 }
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88
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89 //=============================================================================
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90 // Compatibility with older stubs
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91 //=============================================================================
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92
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93 #ifndef CYGSEM_HAL_VIRTUAL_VECTOR_DIAG
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94
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95 #define CYGPRI_HAL_SH_SH3_SCI_PRIVATE
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96 #include <cyg/hal/sh3_sci.h> // driver API
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97
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98 static channel_data_t channel = { (cyg_uint8*)SCI_BASE, 0, 0};
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99
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100 #if defined(CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS)
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101 #include <cyg/hal/hal_stub.h> // hal_output_gdb_string
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102 #endif
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103
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104 #if defined(CYGSEM_HAL_USE_ROM_MONITOR_GDB_stubs)
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105
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106 #define CYG_HAL_DIAG_GDB
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107
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108 #elif defined(CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS)
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109
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110 #define CYG_HAL_DIAG_GDB
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111
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112 #endif
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113
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114 //-----------------------------------------------------------------------------
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115
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116 void hal_diag_init(void)
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117 {
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118 cyg_hal_plf_sci_init_channel(&channel);
94
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119 }
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120
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121 void
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122 hal_diag_write_char_serial( char c )
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123 {
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124 cyg_hal_plf_sci_putc(&channel, c);
94
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125 }
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126
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127 void
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128 hal_diag_read_char(char *c)
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129 {
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130 *c = (char) cyg_hal_plf_sci_getc(&channel);
94
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131 }
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132
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133 // Packet function
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134 void
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135 hal_diag_write_char(char c)
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136 {
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137 #ifdef CYG_HAL_DIAG_GDB
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138 static char line[100];
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139 static int pos = 0;
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140
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141 // No need to send CRs
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142 if( c == '\r' ) return;
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143
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144 line[pos++] = c;
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145
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146 if( c == '\n' || pos == sizeof(line) )
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147 {
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148 CYG_INTERRUPT_STATE old;
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149
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150 // Disable interrupts. This prevents GDB trying to interrupt us
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151 // while we are in the middle of sending a packet. The serial
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152 // receive interrupt will be seen when we re-enable interrupts
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153 // later.
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154
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155 #ifdef CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS
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156 CYG_HAL_GDB_ENTER_CRITICAL_IO_REGION(old);
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157 #else
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158 HAL_DISABLE_INTERRUPTS(old);
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159 #endif
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160
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161 while(1)
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162 {
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163 char c1;
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164 static char hex[] = "0123456789ABCDEF";
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165 cyg_uint8 csum = 0;
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166 int i;
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167
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168 cyg_hal_plf_sci_putc(&channel, '$');
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169 cyg_hal_plf_sci_putc(&channel, 'O');
94
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170 csum += 'O';
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171 for( i = 0; i < pos; i++ )
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172 {
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173 char ch = line[i];
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174 char h = hex[(ch>>4)&0xF];
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175 char l = hex[ch&0xF];
105
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176 cyg_hal_plf_sci_putc(&channel, h);
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177 cyg_hal_plf_sci_putc(&channel, l);
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178 csum += h;
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179 csum += l;
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180 }
105
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181 cyg_hal_plf_sci_putc(&channel, '#');
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182 cyg_hal_plf_sci_putc(&channel, hex[(csum>>4)&0xF]);
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183 cyg_hal_plf_sci_putc(&channel, hex[csum&0xF]);
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184
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185 // Wait for the ACK character '+' from GDB here and handle
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186 // receiving a ^C instead.
105
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187 c1 = (char) cyg_hal_plf_sci_getc(&channel);
94
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188
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189 if( c1 == '+' )
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190 break; // a good acknowledge
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191
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192 // Check for user break.
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193 if( cyg_hal_is_break( &c1, 1 ) )
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194 cyg_hal_user_break( NULL );
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195
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196 // otherwise, loop round again
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197 }
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198
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199 pos = 0;
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200
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201 // And re-enable interrupts
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202 #ifdef CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS
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203 CYG_HAL_GDB_LEAVE_CRITICAL_IO_REGION(old);
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204 #else
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205 HAL_RESTORE_INTERRUPTS(old);
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206 #endif
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207 }
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208 #else // CYG_HAL_DIAG_GDB
105
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209 cyg_hal_plf_sci_putc(&channel, c);
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210 #endif
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211 }
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212
105
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213 #endif // CYGSEM_HAL_VIRTUAL_VECTOR_DIAG
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214
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215 //-----------------------------------------------------------------------------
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216 // End of hal_diag.c