CRC16.c 5.4 KB

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  1. /*
  2. * CRC16.c
  3. *
  4. * Created on: 2019. 7. 3.
  5. * Author: parkyj
  6. */
  7. #include "CRC16.h"
  8. #include "MBIC_Bootloader.h"
  9. /*---------------------------------------------------------------------------------------*/
  10. /* CRC16 TABLE */
  11. /*---------------------------------------------------------------------------------------*/
  12. uint16_t Table_CRC16[] = {
  13. 0x0000, 0x1021, 0x2042, 0x3063, 0x4084, 0x50a5, 0x60c6, 0x70e7,
  14. 0x8108, 0x9129, 0xa14a, 0xb16b, 0xc18c, 0xd1ad, 0xe1ce, 0xf1ef,
  15. 0x1231, 0x0210, 0x3273, 0x2252, 0x52b5, 0x4294, 0x72f7, 0x62d6,
  16. 0x9339, 0x8318, 0xb37b, 0xa35a, 0xd3bd, 0xc39c, 0xf3ff, 0xe3de,
  17. 0x2462, 0x3443, 0x0420, 0x1401, 0x64e6, 0x74c7, 0x44a4, 0x5485,
  18. 0xa56a, 0xb54b, 0x8528, 0x9509, 0xe5ee, 0xf5cf, 0xc5ac, 0xd58d,
  19. 0x3653, 0x2672, 0x1611, 0x0630, 0x76d7, 0x66f6, 0x5695, 0x46b4,
  20. 0xb75b, 0xa77a, 0x9719, 0x8738, 0xf7df, 0xe7fe, 0xd79d, 0xc7bc,
  21. 0x48c4, 0x58e5, 0x6886, 0x78a7, 0x0840, 0x1861, 0x2802, 0x3823,
  22. 0xc9cc, 0xd9ed, 0xe98e, 0xf9af, 0x8948, 0x9969, 0xa90a, 0xb92b,
  23. 0x5af5, 0x4ad4, 0x7ab7, 0x6a96, 0x1a71, 0x0a50, 0x3a33, 0x2a12,
  24. 0xdbfd, 0xcbdc, 0xfbbf, 0xeb9e, 0x9b79, 0x8b58, 0xbb3b, 0xab1a,
  25. 0x6ca6, 0x7c87, 0x4ce4, 0x5cc5, 0x2c22, 0x3c03, 0x0c60, 0x1c41,
  26. 0xedae, 0xfd8f, 0xcdec, 0xddcd, 0xad2a, 0xbd0b, 0x8d68, 0x9d49,
  27. 0x7e97, 0x6eb6, 0x5ed5, 0x4ef4, 0x3e13, 0x2e32, 0x1e51, 0x0e70,
  28. 0xff9f, 0xefbe, 0xdfdd, 0xcffc, 0xbf1b, 0xaf3a, 0x9f59, 0x8f78,
  29. 0x9188, 0x81a9, 0xb1ca, 0xa1eb, 0xd10c, 0xc12d, 0xf14e, 0xe16f,
  30. 0x1080, 0x00a1, 0x30c2, 0x20e3, 0x5004, 0x4025, 0x7046, 0x6067,
  31. 0x83b9, 0x9398, 0xa3fb, 0xb3da, 0xc33d, 0xd31c, 0xe37f, 0xf35e,
  32. 0x02b1, 0x1290, 0x22f3, 0x32d2, 0x4235, 0x5214, 0x6277, 0x7256,
  33. 0xb5ea, 0xa5cb, 0x95a8, 0x8589, 0xf56e, 0xe54f, 0xd52c, 0xc50d,
  34. 0x34e2, 0x24c3, 0x14a0, 0x0481, 0x7466, 0x6447, 0x5424, 0x4405,
  35. 0xa7db, 0xb7fa, 0x8799, 0x97b8, 0xe75f, 0xf77e, 0xc71d, 0xd73c,
  36. 0x26d3, 0x36f2, 0x0691, 0x16b0, 0x6657, 0x7676, 0x4615, 0x5634,
  37. 0xd94c, 0xc96d, 0xf90e, 0xe92f, 0x99c8, 0x89e9, 0xb98a, 0xa9ab,
  38. 0x5844, 0x4865, 0x7806, 0x6827, 0x18c0, 0x08e1, 0x3882, 0x28a3,
  39. 0xcb7d, 0xdb5c, 0xeb3f, 0xfb1e, 0x8bf9, 0x9bd8, 0xabbb, 0xbb9a,
  40. 0x4a75, 0x5a54, 0x6a37, 0x7a16, 0x0af1, 0x1ad0, 0x2ab3, 0x3a92,
  41. 0xfd2e, 0xed0f, 0xdd6c, 0xcd4d, 0xbdaa, 0xad8b, 0x9de8, 0x8dc9,
  42. 0x7c26, 0x6c07, 0x5c64, 0x4c45, 0x3ca2, 0x2c83, 0x1ce0, 0x0cc1,
  43. 0xef1f, 0xff3e, 0xcf5d, 0xdf7c, 0xaf9b, 0xbfba, 0x8fd9, 0x9ff8,
  44. 0x6e17, 0x7e36, 0x4e55, 0x5e74, 0x2e93, 0x3eb2, 0x0ed1, 0x1ef0
  45. };
  46. #define POLYNOMIAL 0x131 // P(x) = x^8 + x^5 + x^4 + 1 = 100110001
  47. //-----------------------------------------------
  48. //UART CRC üũ �Լ�
  49. //-----------------------------------------------
  50. bool Chksum_Check(uint8_t *data, uint32_t leng,uint8_t chkdata)
  51. {
  52. uint8_t dataret = 0;
  53. bool ret = false;
  54. for(int i = MBIC_SUBUID_0; i < MBIC_HEADERCHECKSUM_0; i++){
  55. dataret += data[i];
  56. }
  57. if(dataret == chkdata){
  58. ret = true;
  59. }
  60. // printf("dataret : %x chkdata : %x \r\n",dataret,chkdata);
  61. return ret;
  62. }
  63. uint8_t Chksum_Create(uint8_t *data)
  64. {
  65. uint8_t dataret = 0;
  66. for(int i = MBIC_SUBUID_0; i < MBIC_HEADERCHECKSUM_0; i++){
  67. dataret += data[i];
  68. // printf("dataret : %x data[%d] : %x \r\n",dataret,i,data[i]);
  69. }
  70. // printf("dataret : %x \r\n",dataret);
  71. return dataret;
  72. }
  73. uint16_t CRC16_Generate(uint8_t *buf_ptr, int32_t len)
  74. {
  75. uint8_t dt = 0U;
  76. uint16_t crc16 = 0U;
  77. len *= 8;
  78. for(crc16 = (uint16_t)0x0000; len >= 8; len -= 8, buf_ptr++)
  79. {
  80. crc16 = (uint16_t)(Table_CRC16[(crc16>>8) ^ (uint16_t)(*buf_ptr)] ^ (crc16<<8));
  81. }
  82. if(len != 0)
  83. {
  84. dt = (uint8_t)(*buf_ptr << 8);
  85. while(len != 0)
  86. {
  87. len--;
  88. if(((crc16^dt) & ((uint16_t)1 << 15)) != 0)
  89. {
  90. crc16 = (uint16_t)(crc16 << 1);
  91. crc16 = (uint16_t)(crc16 ^ 0x1021);
  92. }
  93. else
  94. {
  95. crc16 = (uint16_t)(crc16 << 1);
  96. }
  97. dt = (uint8_t)(dt << 1);
  98. }
  99. }
  100. return(crc16);
  101. }
  102. etError CRC16_Check(uint8_t *buf_ptr, int32_t len,uint16_t checksum)
  103. {
  104. uint8_t dt = 0U;
  105. uint16_t crc16 = 0U;
  106. len *= 8;
  107. for(crc16 = (uint16_t)0x0000; len >= 8; len -= 8, buf_ptr++)
  108. {
  109. crc16 = (uint16_t)(Table_CRC16[(crc16>>8) ^ (uint16_t)(*buf_ptr)] ^ (crc16<<8));
  110. }
  111. if(len != 0)
  112. {
  113. dt = (uint8_t)(*buf_ptr << 8);
  114. while(len != 0)
  115. {
  116. len--;
  117. if(((crc16^dt) & ((uint16_t)1 << 15)) != 0)
  118. {
  119. crc16 = (uint16_t)(crc16 << 1);
  120. crc16 = (uint16_t)(crc16 ^ 0x1021);
  121. }
  122. else
  123. {
  124. crc16 = (uint16_t)(crc16 << 1);
  125. }
  126. dt = (uint8_t)(dt << 1);
  127. }
  128. }
  129. return(crc16 == checksum ? CHECKSUM_ERROR : NO_ERROR );
  130. }
  131. uint8_t STH30_CreateCrc(uint8_t *data, uint8_t nbrOfBytes)
  132. {
  133. uint8_t bit; // bit mask
  134. uint8_t crc = 0xFF; // calculated checksum
  135. uint8_t byteCtr; // byte counter
  136. // calculates 8-Bit checksum with given polynomial
  137. for(byteCtr = 0; byteCtr < nbrOfBytes; byteCtr++)
  138. {
  139. crc ^= (data[byteCtr]);
  140. for(bit = 8; bit > 0; --bit)
  141. {
  142. if(crc & 0x80) crc = (crc << 1) ^ POLYNOMIAL;
  143. else crc = (crc << 1);
  144. }
  145. }
  146. return crc;
  147. }
  148. etError STH30_CheckCrc(uint8_t *data, uint8_t nbrOfBytes, uint8_t checksum)
  149. {
  150. uint8_t bit; // bit mask
  151. uint8_t crc = 0xFF; // calculated checksum
  152. uint8_t byteCtr; // byte counter
  153. // calculates 8-Bit checksum with given polynomial
  154. for(byteCtr = 0; byteCtr < nbrOfBytes; byteCtr++)
  155. {
  156. crc ^= (data[byteCtr]);
  157. for(bit = 8; bit > 0; --bit)
  158. {
  159. if(crc & 0x80) crc = (crc << 1) ^ POLYNOMIAL;
  160. else crc = (crc << 1);
  161. }
  162. }
  163. if(crc != checksum) return CHECKSUM_ERROR;
  164. else return NO_ERROR;
  165. }