1 | /*****************************************************************************/ |
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2 | /* |
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3 | High Level Debug Port Functions |
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4 | |
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5 | $Id$ |
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6 | |
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7 | */ |
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8 | /*****************************************************************************/ |
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9 | |
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10 | #include <stdio.h> |
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11 | #include <stdarg.h> |
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12 | |
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13 | #include "debugport.h" |
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14 | #include "m68302scc.h" |
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15 | #include "bsp.h" |
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16 | |
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17 | static int initialised; |
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18 | |
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19 | void debug_port_initialise(void) |
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20 | { |
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21 | scc_initialise(CONSOLE_PORT, CONSOLE_BAUD, FALSE); |
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22 | #if defined(DEBUG_PORT) |
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23 | scc_initialise(DEBUG_PORT, DEBUG_BAUD, FALSE); |
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24 | #endif |
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25 | } |
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26 | |
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27 | unsigned char debug_port_status(const unsigned char status) |
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28 | { |
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29 | if (!initialised) |
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30 | { |
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31 | initialised = 1; |
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32 | debug_port_initialise(); |
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33 | } |
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34 | |
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35 | return scc_status(CONSOLE_PORT, status); |
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36 | } |
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37 | |
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38 | unsigned char debug_port_in(void) |
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39 | { |
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40 | if (!initialised) |
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41 | { |
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42 | initialised = 1; |
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43 | debug_port_initialise(); |
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44 | } |
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45 | |
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46 | return scc_in(CONSOLE_PORT); |
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47 | } |
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48 | |
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49 | void debug_port_out(const unsigned char character) |
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50 | { |
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51 | if (!initialised) |
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52 | { |
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53 | initialised = 1; |
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54 | debug_port_initialise(); |
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55 | } |
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56 | |
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57 | scc_out(CONSOLE_PORT, character); |
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58 | } |
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59 | |
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60 | void debug_port_write(const char *buffer) |
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61 | { |
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62 | while (*buffer != '\0') |
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63 | { |
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64 | debug_port_out(*buffer++); |
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65 | } |
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66 | } |
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67 | |
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68 | void debug_port_write_buffer(const char *buffer, unsigned int size) |
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69 | { |
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70 | unsigned int count; |
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71 | for (count = 0; count < size; count++) |
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72 | { |
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73 | debug_port_out(buffer[count]); |
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74 | } |
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75 | } |
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76 | |
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77 | void debug_port_write_hex_uint(const unsigned int value) |
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78 | { |
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79 | unsigned int bits = sizeof(value) * 8; |
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80 | unsigned char c; |
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81 | |
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82 | do |
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83 | { |
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84 | bits -= 4; |
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85 | c = (unsigned char) ((value >> bits) & 0x0F); |
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86 | if (c < 10) |
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87 | { |
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88 | c += '0'; |
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89 | } |
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90 | else |
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91 | { |
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92 | c += 'a' - 10; |
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93 | } |
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94 | debug_port_out((char) c); |
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95 | } |
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96 | while (bits); |
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97 | } |
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98 | |
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99 | void debug_port_write_hex_ulong(const unsigned long value) |
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100 | { |
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101 | unsigned int bits = sizeof(value) * 8; |
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102 | unsigned char c; |
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103 | |
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104 | do |
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105 | { |
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106 | bits -= 4; |
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107 | c = (unsigned char) ((value >> bits) & 0x0F); |
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108 | if (c < 10) |
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109 | { |
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110 | c += '0'; |
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111 | } |
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112 | else |
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113 | { |
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114 | c += 'a' - 10; |
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115 | } |
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116 | debug_port_out((char) c); |
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117 | } |
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118 | while (bits); |
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119 | } |
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120 | |
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121 | #define BUFFER_SIZE (256) |
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122 | static char buffer[BUFFER_SIZE]; |
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123 | |
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124 | void debug_port_printf(const char *format, ...) |
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125 | { |
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126 | va_list args; |
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127 | int written; |
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128 | |
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129 | /* gain access to the argument list */ |
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130 | va_start(args, format); |
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131 | |
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132 | /* set the trap */ |
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133 | buffer[BUFFER_SIZE - 2] = '\xAA'; |
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134 | buffer[BUFFER_SIZE - 1] = '\x55'; |
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135 | |
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136 | /* format the string and send to stdout */ |
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137 | written = vsprintf(buffer, format, args); |
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138 | |
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139 | /* try an trap format buffer overflows */ |
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140 | if ((buffer[BUFFER_SIZE - 2] != '\xAA') || |
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141 | (buffer[BUFFER_SIZE - 1] != '\x55')) |
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142 | { |
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143 | debug_port_write("debug port buffer overflow, halting..."); |
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144 | DISABLE_WATCHDOG(); |
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145 | while (1 == 1); |
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146 | } |
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147 | |
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148 | /* see if an error occurred, if not flush the output buffer */ |
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149 | if (written != -1) |
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150 | { |
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151 | debug_port_write_buffer(buffer, written); |
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152 | } |
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153 | } |
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154 | |
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155 | void debug_port_banner(void) |
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156 | { |
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157 | #define CARD_LABEL "ods68302-" #VARIANT |
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158 | |
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159 | debug_port_write("\n\n\r"); |
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160 | debug_port_write(_Copyright_Notice); |
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161 | debug_port_write("\n\r " CARD_ID "\n\r"); |
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162 | } |
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163 | |
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