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1 /* |
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2 canfestival@canopencanada.ca |
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3 |
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4 See COPYING file for copyrights details. |
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5 |
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6 This library is free software; you can redistribute it and/or |
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7 modify it under the terms of the GNU Lesser General Public |
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8 License as published by the Free Software Foundation; either |
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9 version 2.1 of the License, or (at your option) any later version. |
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10 |
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11 This library is distributed in the hope that it will be useful, |
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12 but WITHOUT ANY WARRANTY; without even the implied warranty of |
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13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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14 Lesser General Public License for more details. |
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15 |
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16 You should have received a copy of the GNU Lesser General Public |
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17 License along with this library; if not, write to the Free Software |
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18 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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19 |
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20 flash.c |
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21 save to / retrieve from the non-volatile memory |
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22 to be tested |
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23 - can we write/read into an address without working with the whole page (256bytes) |
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24 */ |
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25 |
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26 |
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27 #include <stdio.h> |
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28 #include <stdlib.h> |
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29 |
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30 #include "applicfg.h" |
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31 #include "data.h" |
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32 #include "objdictdef.h" |
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33 |
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34 #include "lpc2138_defs.h" /* LPC21xx definitions */ |
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35 |
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36 #define IAP_LOCATION 0x7ffffff1 |
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37 |
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38 |
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39 // define a page of data of NVRAM_BLOCK_SIZE bytes |
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40 // |
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41 short data_len; /* 0 to NVRAM_BLOCK_SIZE bytes */ |
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42 short data_num_pages; |
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43 unsigned int *data_page = NULL; |
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44 unsigned int data_addr; |
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45 |
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46 unsigned int *regs_page = NULL; |
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47 |
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48 // local definitons |
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49 void ee_erase(unsigned int ,unsigned int[]); //function erases EEPROM |
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50 void ee_write_page(unsigned int); //function adds a record in EEPROM |
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51 void ee_read_page(unsigned int); //function reads the latest valid record in EEPROM |
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52 |
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53 typedef void (*IAP)(unsigned int [],unsigned int[]); |
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54 IAP iap_entry; |
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55 |
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56 |
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57 |
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58 /************************************************************************/ |
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59 /* */ |
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60 /* function: */ |
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61 /* void ee_erase(unsigned int command_ee,unsigned int result_ee[]) */ |
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62 /* */ |
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63 /* type: void */ |
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64 /* */ |
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65 /* parameters: */ |
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66 /* command_ee - Not used. */ |
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67 /* result_ee[0] - Returns a response to the last IAP command used. */ |
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68 /* 0 - EEPROM successfully erased. */ |
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69 /* For all other response values, see microcontroller */ |
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70 /* User Manual, IAP Commands and Status Codes Summary. */ |
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71 /* result_ee[1] - Not used. */ |
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72 /* */ |
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73 /* version: 1.1 (01/27/2006) */ |
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74 /* */ |
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75 /* constants defined in LPC2k_ee.h used in this function: */ |
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76 /* EE_SEC_L - microcontroller's Flash sector where EEPROM begins */ |
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77 /* EE_SEC_H - microcontroller's Flash sector where EEPROM ends */ |
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78 /* EE_CCLK - microcontroller's system clock (cclk) */ |
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79 /* */ |
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80 /* description: */ |
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81 /* This function erases LPC2000 on-chip Flash sectors selected to act */ |
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82 /* as an EEPROM. All Flash sectors between EE_SEC_L abd EE_SEC_H */ |
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83 /* (including these sectors) will be erased using the In Application */ |
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84 /* Programming (IAP) routines (see User Manual for more details). */ |
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85 /* Also, this function disables all interrupts while erasing the */ |
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86 /* EEPROM. If this is not needed, three lines of the ee_erase */ |
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87 /* subroutine can simply be commented-out without affecting the */ |
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88 /* routine performance at all. */ |
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89 /* */ |
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90 /* revision history: */ |
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91 /* - Rev. 1.1 adds interrupt disable feature. */ |
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92 /* */ |
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93 /************************************************************************/ |
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94 void ee_erase(unsigned int command_ee,unsigned int result_ee[]) |
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95 { |
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96 unsigned int command_iap[5]; |
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97 unsigned int result_iap[3]; |
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98 unsigned long int enabled_interrupts; |
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99 |
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100 enabled_interrupts = VICIntEnable; //disable all interrupts |
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101 VICIntEnClr = enabled_interrupts; |
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102 |
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103 command_iap[0]=50; // prepare sectors from EE_SEC_L to EE_SEC_H for erase |
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104 command_iap[1]=EE_SEC_L; |
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105 command_iap[2]=EE_SEC_H; |
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106 iap_entry=(IAP) IAP_LOCATION; |
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107 iap_entry(command_iap,result_iap); |
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108 |
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109 command_iap[0]=52; // erase sectors from EE_SEC_L to EE_SEC_H |
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110 command_iap[1]=EE_SEC_L; |
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111 command_iap[2]=EE_SEC_H; |
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112 command_iap[3]=EE_CCLK; |
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113 iap_entry=(IAP) IAP_LOCATION; |
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114 iap_entry(command_iap,result_iap); |
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115 |
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116 command_iap[0]=53; // blankcheck sectors from EE_SEC_L to EE_SEC_H |
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117 command_iap[1]=EE_SEC_L; |
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118 command_iap[2]=EE_SEC_H; |
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119 iap_entry=(IAP) IAP_LOCATION; |
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120 iap_entry(command_iap,result_iap); |
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121 |
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122 VICIntEnable = enabled_interrupts; //restore interrupt enable register |
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123 |
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124 result_ee[0]=result_iap[0]; |
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125 return; |
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126 } |
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127 |
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128 /************************************************************************/ |
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129 /* */ |
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130 /* function: */ |
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131 /* void ee_write(unsigned int command_ee,unsigned int result_ee[]) */ |
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132 /* */ |
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133 /* type: void */ |
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134 /* */ |
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135 /* parameters: */ |
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136 /* command_ee - An address of a content of ee_data type that has */ |
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137 /* to be programmed into EEPROM. */ |
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138 /* result_ee[0] - Returns a response to the last IAP command used. */ |
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139 /* 0 - data successfully programmed in EEPROM. */ |
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140 /* 501 - no space in EEPROM to program data. */ |
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141 /* For all other response values, see microcontroller */ |
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142 /* User Manual, IAP Commands and Status Codes Summary. */ |
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143 /* result_ee[1] - Not used. */ |
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144 /* */ |
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145 /* version: 1.1 (01/27/2006) */ |
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146 /* */ |
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147 /* constants defined in LPC2k_ee.h used in this function: */ |
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148 /* EE_BUFFER_SIZE - IAP buffer size; must be 256 or 512 */ |
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149 /* NO_SPACE_IN_EEPROM - EEPROM is full and no data can be programmed */ |
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150 /* EE_BUFFER_MASK - parameter used for interfacing with IAP */ |
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151 /* EE_REC_SIZE - ee_data structure size in bytes */ |
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152 /* EE_SEC_L - micro's Flash sector where EEPROM begins */ |
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153 /* EE_SEC_H - micro's Flash sector where EEPROM ends */ |
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154 /* EE_CCLK - micro's system clock (cclk) */ |
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155 /* */ |
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156 /* description: */ |
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157 /* This function writes a single structure of ee_data type into the */ |
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158 /* EEPROM using an In Application Programming (IAP) routines (see */ |
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159 /* User Manual for more details). command_ee contains an address of */ |
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160 /* this structure. EEPROM is scanned for the last (if any) record */ |
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161 /* identifier (EE_REC_ID), and a new record is added next to it. */ |
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162 /* Also, this function disables all interrupts while erasing the */ |
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163 /* EEPROM. If this is not needed, three lines of the ee_write */ |
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164 /* subroutine can simply be commented-out without affecting the */ |
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165 /* routine performance at all. */ |
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166 /* */ |
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167 /* revision history: */ |
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168 /* - Rev. 1.1 fixes a bug related to verifying a content written into */ |
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169 /* the EEPROM. 1.0 was reporting missmatch even when there were no */ |
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170 /* problems at all. */ |
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171 /* Rev. 1.1 adds interrupt disable feature. */ |
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172 /* */ |
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173 /************************************************************************/ |
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174 |
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175 void ee_write_page(unsigned int addr) |
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176 { |
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177 unsigned long int enabled_interrupts; |
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178 // unsigned char ee_buffer[16]; |
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179 unsigned int command_iap[5], result_iap[3]; |
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180 |
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181 enabled_interrupts = VICIntEnable; //disable all interrupts |
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182 VICIntEnClr = enabled_interrupts; |
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183 |
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184 iap_entry = (IAP) IAP_LOCATION; |
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185 |
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186 // prepare sectors from EE_SEC_L to EE_SEC_H for erase |
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187 command_iap[0] = 50; |
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188 command_iap[1] = EE_SEC_L; |
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189 command_iap[2] = EE_SEC_H; |
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190 iap_entry(command_iap, result_iap); |
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191 |
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192 // copy RAM to flash/eeprom |
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193 command_iap[0] = 51; |
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194 command_iap[1] = (unsigned int) (addr & EE_START_MASK); // 256 kb boundary |
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195 command_iap[2] = (unsigned int) (data_page); // should be on a word boundary |
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196 command_iap[3] = 256; |
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197 command_iap[4] = EE_CCLK; |
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198 iap_entry(command_iap, result_iap); |
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199 |
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200 #if 0 |
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201 // compare RAM and flash/eeprom |
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202 command_iap[0] = 56; |
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203 command_iap[1] = (unsigned int) data; |
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204 command_iap[2] = addr; |
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205 command_iap[3] = dlen; |
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206 iap_entry(command_iap, result_iap); |
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207 #endif |
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208 |
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209 VICIntEnable = enabled_interrupts; //restore interrupt enable register |
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210 } |
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211 |
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212 |
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213 /************************************************************************/ |
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214 /* */ |
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215 /* function: */ |
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216 /* void ee_read(unsigned int command_ee,unsigned int result_ee[]) */ |
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217 /* */ |
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218 /* type: void */ |
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219 /* */ |
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220 /* parameters: */ |
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221 /* command_ee - Not used. */ |
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222 /* result_ee[0] - Returns a response. */ |
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223 /* 0 - data successfully found in EEPROM. */ |
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224 /* 500 - no data/records available in EEPROM. */ |
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225 /* result_ee[1] - an address of the last record of ee_data type */ |
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226 /* in EEPROM. */ |
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227 /* */ |
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228 /* version: 1.1 (01/27/2006) */ |
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229 /* */ |
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230 /* constants defined in LPC2k_ee.h used in this function: */ |
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231 /* NO_RECORDS_AVAILABLE - EEPROM is empty/no records identifiable */ |
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232 /* with a record identifier (EE_REC_ID) found */ |
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233 /* EE_ADR_L - micro's Flash address from where EEPROM begins */ |
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234 /* EE_REC_SIZE - size (in bytes) of a ee_data structure */ |
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235 /* */ |
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236 /* description: */ |
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237 /* This function scans an EEPROM content looking for the last record */ |
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238 /* that can be identified with a record identifier (EE_REC_ID). When */ |
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239 /* such data is found, its address is passed as result_ee[1]. */ |
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240 /* */ |
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241 /* revision history: */ |
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242 /* - Rev. 1.0 had problems with accessing the last record in a fully */ |
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243 /* occupied EEPROM. Rev. 1.1 fixes this. */ |
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244 /* */ |
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245 /************************************************************************/ |
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246 void ee_read_page(unsigned int addr) |
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247 { |
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248 memcpy(data_page, (unsigned int *)addr, sizeof(unsigned int)*64); |
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249 } |
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250 |
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251 |
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252 ////////////////////////////////////////////////////////////////////////////////////////// |
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253 ////////////////////////////////////////////////////////////////////////////////////////// |
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254 |
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255 |
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256 /* |
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257 CAN FESTIVAL interface functions |
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258 */ |
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259 |
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260 |
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261 int _get_data_len(int type) |
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262 { |
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263 int len = 0; /* number of bytes */ |
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264 switch(type) |
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265 { |
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266 case boolean: |
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267 len = 1; |
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268 break; |
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269 |
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270 case int8: |
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271 case uint8: |
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272 len = 1; |
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273 break; |
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274 case int16: |
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275 case uint16: |
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276 len = 2; |
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277 break; |
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278 case int24: |
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279 case uint24: |
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280 len = 3; |
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281 break; |
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282 case int32: |
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283 case uint32: |
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284 case real32: |
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285 len = 4; |
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286 break; |
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287 case int40: |
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288 case uint40: |
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289 len = 5; |
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290 break; |
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291 case int48: |
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292 case uint48: |
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293 len = 6; |
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294 break; |
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295 case int56: |
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296 case uint56: |
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297 len = 7; |
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298 break; |
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299 case int64: |
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300 case uint64: |
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301 case real64: |
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302 len = 8; |
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303 break; |
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304 #if 0 |
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305 /* TO DO */ |
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306 case visible_string: |
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307 case octet_string: |
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308 case unicode_string: |
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309 case time_of_day: |
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310 case time_difference: |
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311 #endif |
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312 } |
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313 |
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314 return len; |
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315 } |
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316 |
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317 |
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318 |