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1 /* |
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2 This file is part of CanFestival, a library implementing CanOpen Stack. |
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3 |
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4 Author: Christian Fortin (canfestival@canopencanada.ca) |
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5 |
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6 See COPYING file for copyrights details. |
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7 |
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8 This library is free software; you can redistribute it and/or |
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9 modify it under the terms of the GNU Lesser General Public |
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10 License as published by the Free Software Foundation; either |
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11 version 2.1 of the License, or (at your option) any later version. |
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12 |
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13 This library is distributed in the hope that it will be useful, |
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14 but WITHOUT ANY WARRANTY; without even the implied warranty of |
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15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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16 Lesser General Public License for more details. |
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17 |
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18 You should have received a copy of the GNU Lesser General Public |
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19 License along with this library; if not, write to the Free Software |
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20 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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21 */ |
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22 |
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23 #include <stdio.h> |
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24 #include <stdlib.h> |
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25 |
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26 #include "applicfg.h" |
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27 // #include "objdictdef.h" |
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28 |
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29 #include "lpc2138_pinout.h" |
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30 #include "lpc2138_defs.h" |
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31 #include "lpc2138.h" |
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32 |
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33 #define IAP_LOCATION 0x7ffffff1 |
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34 |
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35 // define a page of data of 256 bytes |
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36 // |
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37 short data_len; /* 0 to 256 bytes */ |
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38 unsigned int *data_page = NULL; |
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39 unsigned int data_addr; |
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40 |
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41 // local definitons |
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42 void ee_erase(unsigned int ,unsigned int[]); //function erases EEPROM |
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43 void ee_write_page(unsigned int); //function adds a record in EEPROM |
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44 void ee_read_page(unsigned int); //function reads the latest valid record in EEPROM |
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45 |
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46 typedef void (*IAP)(unsigned int [],unsigned int[]); |
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47 IAP iap_entry; |
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48 |
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49 |
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50 /***************************************************************************************/ |
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51 |
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52 void lpc2138_pinsel_set(int pin, LPC2138_PORT port, int size, int func) |
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53 { |
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54 int i; |
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55 |
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56 for (i = 0; i < size; pin++, i++) |
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57 { |
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58 /* 2 bits par broche. */ |
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59 int shift = (pin - ((pin < 16) ? 0 : 16)) << 1; |
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60 |
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61 REG32_ADDR pinsel = (port == 1) ? |
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62 (REG32_ADDR) P1_PINSEL2_ADDR : ((pin < 16) ? |
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63 (REG32_ADDR) P0_PINSEL0_ADDR : (REG32_ADDR) P0_PINSEL1_ADDR); |
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64 |
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65 *pinsel = (*pinsel & ~(BITMASK_2 << shift)) | (func << shift); |
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66 } |
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67 } |
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68 |
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69 void lpc2138_pinsel_clear() |
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70 { |
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71 P0_PINSEL0 = 0x00000000; |
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72 P0_PINSEL1 = 0x00000000; |
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73 P1_PINSEL2 = 0x00000000; |
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74 } |
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75 |
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76 |
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77 int lpc2138_printf(void) |
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78 { |
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79 return lpc2138_fprintf(stdout); |
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80 } |
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81 |
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82 |
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83 int lpc2138_printf_pins(void) |
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84 { |
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85 return lpc2138_fprintf_pins(stdout); |
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86 } |
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87 |
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88 |
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89 int lpc2138_fprintf(FILE *stream) |
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90 { |
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91 return fprintf(stream, |
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92 "[p0=0x%08X,p0_iodir=0x%08X,p0_pinsel0=0x%08X,p0_pinsel1=0x%08X," \ |
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93 "p1=0x%08X,p1_iodir=0x%08X,p1_pinsel2=0x%08X]", |
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94 P0_IOPIN, P0_IODIR, P0_PINSEL0, P0_PINSEL1, |
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95 P1_IOPIN, P1_IODIR, P1_PINSEL2); |
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96 } |
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97 |
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98 int lpc2138_fprintf_pins(FILE *stream) |
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99 { |
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100 return fprintf(stream, |
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101 "[cs_s1d13706=0x%X," \ |
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102 "cs_sja1000=0x%X," \ |
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103 "wait=0x%X," \ |
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104 "bhe=0x%X," \ |
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105 "interrupt_sja1000=0x%X," \ |
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106 "redgreenled=0x%X," \ |
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107 "ale=0x%X," \ |
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108 "rd=0x%X," \ |
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109 "wr=0x%X," \ |
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110 "data=0x%X," \ |
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111 "addresses=0x%X]", |
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112 lpc2138_cs_s1d13706_get(), |
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113 lpc2138_cs_sja1000_get(), |
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114 lpc2138_wait_get(), |
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115 lpc2138_bhe_get(), |
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116 lpc2138_redgreenled_get(), |
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117 lpc2138_interrupt_sja1000_get(), |
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118 lpc2138_ale_get(), |
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119 lpc2138_rd_get(), |
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120 lpc2138_wr_get(), |
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121 lpc2138_data_get(), |
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122 lpc2138_addresses_get()); |
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123 } |
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124 |
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125 |
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126 /* |
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127 SJA1000 interface |
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128 */ |
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129 |
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130 unsigned char sja1000_read(unsigned char addr8) |
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131 { |
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132 unsigned char data; |
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133 |
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134 lpc2138_data_set_mode(LPC2138_MODE_OUTPUT); |
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135 lpc2138_ale_set(1); |
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136 lpc2138_data_set(addr8); |
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137 |
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138 lpc2138_ale_set(0); |
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139 lpc2138_data_set_mode(LPC2138_MODE_INPUT); |
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140 |
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141 lpc2138_cs_sja1000_set(0); |
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142 lpc2138_rd_set(0); |
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143 data = lpc2138_data_get(); |
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144 data = lpc2138_data_get(); |
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145 |
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146 lpc2138_rd_set(1); |
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147 |
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148 lpc2138_cs_sja1000_set(1); |
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149 lpc2138_data_set_mode(LPC2138_MODE_OUTPUT); |
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150 |
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151 return data; |
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152 } |
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153 |
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154 |
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155 void sja1000_write(unsigned char addr8, unsigned char data) |
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156 { |
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157 lpc2138_data_set_mode(LPC2138_MODE_OUTPUT); |
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158 |
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159 lpc2138_data_set(addr8); |
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160 |
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161 lpc2138_ale_set(1); |
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162 |
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163 lpc2138_ale_set(0); |
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164 lpc2138_cs_sja1000_set(0); |
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165 lpc2138_wr_set(0); |
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166 |
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167 lpc2138_data_set(data); |
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168 |
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169 lpc2138_wr_set(1); |
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170 lpc2138_cs_sja1000_set(1); |
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171 |
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172 } |
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173 |
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174 /* |
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175 FLASH interface |
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176 */ |
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177 |
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178 /************************************************************************/ |
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179 /* */ |
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180 /* function: */ |
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181 /* void ee_erase(unsigned int command_ee,unsigned int result_ee[]) */ |
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182 /* */ |
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183 /* type: void */ |
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184 /* */ |
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185 /* parameters: */ |
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186 /* command_ee - Not used. */ |
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187 /* result_ee[0] - Returns a response to the last IAP command used. */ |
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188 /* 0 - EEPROM successfully erased. */ |
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189 /* For all other response values, see microcontroller */ |
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190 /* User Manual, IAP Commands and Status Codes Summary. */ |
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191 /* result_ee[1] - Not used. */ |
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192 /* */ |
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193 /* version: 1.1 (01/27/2006) */ |
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194 /* */ |
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195 /* constants defined in LPC2k_ee.h used in this function: */ |
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196 /* EE_SEC_L - microcontroller's Flash sector where EEPROM begins */ |
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197 /* EE_SEC_H - microcontroller's Flash sector where EEPROM ends */ |
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198 /* EE_CCLK - microcontroller's system clock (cclk) */ |
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199 /* */ |
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200 /* description: */ |
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201 /* This function erases LPC2000 on-chip Flash sectors selected to act */ |
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202 /* as an EEPROM. All Flash sectors between EE_SEC_L abd EE_SEC_H */ |
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203 /* (including these sectors) will be erased using the In Application */ |
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204 /* Programming (IAP) routines (see User Manual for more details). */ |
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205 /* Also, this function disables all interrupts while erasing the */ |
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206 /* EEPROM. If this is not needed, three lines of the ee_erase */ |
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207 /* subroutine can simply be commented-out without affecting the */ |
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208 /* routine performance at all. */ |
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209 /* */ |
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210 /* revision history: */ |
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211 /* - Rev. 1.1 adds interrupt disable feature. */ |
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212 /* */ |
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213 /************************************************************************/ |
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214 void iat_flash_erase(unsigned int command_ee,unsigned int result_ee[]) |
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215 { |
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216 unsigned int command_iap[5]; |
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217 unsigned int result_iap[3]; |
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218 unsigned long int enabled_interrupts; |
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219 |
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220 enabled_interrupts = VICIntEnable; //disable all interrupts |
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221 VICIntEnClr = enabled_interrupts; |
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222 |
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223 command_iap[0]=50; // prepare sectors from EE_SEC_L to EE_SEC_H for erase |
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224 command_iap[1]=EE_SEC_L; |
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225 command_iap[2]=EE_SEC_H; |
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226 iap_entry=(IAP) IAP_LOCATION; |
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227 iap_entry(command_iap,result_iap); |
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228 |
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229 command_iap[0]=52; // erase sectors from EE_SEC_L to EE_SEC_H |
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230 command_iap[1]=EE_SEC_L; |
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231 command_iap[2]=EE_SEC_H; |
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232 command_iap[3]=EE_CCLK; |
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233 iap_entry=(IAP) IAP_LOCATION; |
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234 iap_entry(command_iap,result_iap); |
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235 |
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236 command_iap[0]=53; // blankcheck sectors from EE_SEC_L to EE_SEC_H |
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237 command_iap[1]=EE_SEC_L; |
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238 command_iap[2]=EE_SEC_H; |
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239 iap_entry=(IAP) IAP_LOCATION; |
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240 iap_entry(command_iap,result_iap); |
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241 |
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242 VICIntEnable = enabled_interrupts; //restore interrupt enable register |
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243 |
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244 result_ee[0]=result_iap[0]; |
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245 return; |
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246 } |
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247 |
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248 /************************************************************************/ |
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249 /* */ |
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250 /* function: */ |
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251 /* void ee_write(unsigned int command_ee,unsigned int result_ee[]) */ |
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252 /* */ |
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253 /* type: void */ |
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254 /* */ |
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255 /* parameters: */ |
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256 /* command_ee - An address of a content of ee_data type that has */ |
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257 /* to be programmed into EEPROM. */ |
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258 /* result_ee[0] - Returns a response to the last IAP command used. */ |
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259 /* 0 - data successfully programmed in EEPROM. */ |
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260 /* 501 - no space in EEPROM to program data. */ |
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261 /* For all other response values, see microcontroller */ |
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262 /* User Manual, IAP Commands and Status Codes Summary. */ |
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263 /* result_ee[1] - Not used. */ |
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264 /* */ |
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265 /* version: 1.1 (01/27/2006) */ |
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266 /* */ |
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267 /* constants defined in LPC2k_ee.h used in this function: */ |
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268 /* EE_BUFFER_SIZE - IAP buffer size; must be 256 or 512 */ |
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269 /* NO_SPACE_IN_EEPROM - EEPROM is full and no data can be programmed */ |
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270 /* EE_BUFFER_MASK - parameter used for interfacing with IAP */ |
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271 /* EE_REC_SIZE - ee_data structure size in bytes */ |
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272 /* EE_SEC_L - micro's Flash sector where EEPROM begins */ |
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273 /* EE_SEC_H - micro's Flash sector where EEPROM ends */ |
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274 /* EE_CCLK - micro's system clock (cclk) */ |
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275 /* */ |
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276 /* description: */ |
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277 /* This function writes a single structure of ee_data type into the */ |
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278 /* EEPROM using an In Application Programming (IAP) routines (see */ |
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279 /* User Manual for more details). command_ee contains an address of */ |
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280 /* this structure. EEPROM is scanned for the last (if any) record */ |
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281 /* identifier (EE_REC_ID), and a new record is added next to it. */ |
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282 /* Also, this function disables all interrupts while erasing the */ |
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283 /* EEPROM. If this is not needed, three lines of the ee_write */ |
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284 /* subroutine can simply be commented-out without affecting the */ |
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285 /* routine performance at all. */ |
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286 /* */ |
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287 /* revision history: */ |
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288 /* - Rev. 1.1 fixes a bug related to verifying a content written into */ |
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289 /* the EEPROM. 1.0 was reporting missmatch even when there were no */ |
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290 /* problems at all. */ |
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291 /* Rev. 1.1 adds interrupt disable feature. */ |
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292 /* */ |
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293 /************************************************************************/ |
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294 |
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295 void iat_flash_write_page(unsigned int addr) |
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296 { |
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297 unsigned long int enabled_interrupts; |
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298 // unsigned char ee_buffer[16]; |
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299 unsigned int command_iap[5], result_iap[3]; |
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300 |
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301 enabled_interrupts = VICIntEnable; //disable all interrupts |
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302 VICIntEnClr = enabled_interrupts; |
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303 |
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304 iap_entry = (IAP) IAP_LOCATION; |
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305 |
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306 // prepare sectors from EE_SEC_L to EE_SEC_H for erase |
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307 command_iap[0] = 50; |
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308 command_iap[1] = EE_SEC_L; |
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309 command_iap[2] = EE_SEC_H; |
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310 iap_entry(command_iap, result_iap); |
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311 |
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312 // copy RAM to flash/eeprom |
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313 command_iap[0] = 51; |
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314 command_iap[1] = (unsigned int) (addr & EE_START_MASK); // 256 kb boundary |
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315 command_iap[2] = (unsigned int) (data_page); // should be on a word boundary |
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316 command_iap[3] = 256; |
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317 command_iap[4] = EE_CCLK; |
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318 iap_entry(command_iap, result_iap); |
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319 |
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320 #if 0 |
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321 // compare RAM and flash/eeprom |
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322 command_iap[0] = 56; |
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323 command_iap[1] = (unsigned int) data; |
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324 command_iap[2] = addr; |
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325 command_iap[3] = dlen; |
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326 iap_entry(command_iap, result_iap); |
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327 #endif |
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328 |
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329 VICIntEnable = enabled_interrupts; //restore interrupt enable register |
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330 } |
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331 |
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332 |
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333 /************************************************************************/ |
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334 /* */ |
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335 /* function: */ |
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336 /* void ee_read(unsigned int command_ee,unsigned int result_ee[]) */ |
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337 /* */ |
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338 /* type: void */ |
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339 /* */ |
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340 /* parameters: */ |
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341 /* command_ee - Not used. */ |
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342 /* result_ee[0] - Returns a response. */ |
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343 /* 0 - data successfully found in EEPROM. */ |
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344 /* 500 - no data/records available in EEPROM. */ |
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345 /* result_ee[1] - an address of the last record of ee_data type */ |
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346 /* in EEPROM. */ |
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347 /* */ |
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348 /* version: 1.1 (01/27/2006) */ |
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349 /* */ |
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350 /* constants defined in LPC2k_ee.h used in this function: */ |
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351 /* NO_RECORDS_AVAILABLE - EEPROM is empty/no records identifiable */ |
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352 /* with a record identifier (EE_REC_ID) found */ |
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353 /* EE_ADR_L - micro's Flash address from where EEPROM begins */ |
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354 /* EE_REC_SIZE - size (in bytes) of a ee_data structure */ |
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355 /* */ |
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356 /* description: */ |
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357 /* This function scans an EEPROM content looking for the last record */ |
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358 /* that can be identified with a record identifier (EE_REC_ID). When */ |
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359 /* such data is found, its address is passed as result_ee[1]. */ |
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360 /* */ |
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361 /* revision history: */ |
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362 /* - Rev. 1.0 had problems with accessing the last record in a fully */ |
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363 /* occupied EEPROM. Rev. 1.1 fixes this. */ |
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364 /* */ |
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365 /************************************************************************/ |
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366 void iat_flash_read_page(unsigned int addr) |
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367 { |
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368 memcpy(data_page, (unsigned int *)addr, sizeof(unsigned int)*64); |
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369 } |
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370 |
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371 |
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372 |
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373 |