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CRC_DSI_with_table.c
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CRC_DSI_with_table.c
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#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <stdint.h>
#include <windows.h>
int32_t main()
{
uint8_t input_command[10];
uint32_t input_command_int;
uint8_t input_command_binary[32] = {};
int32_t set_position = 0;
int32_t CRC;
int32_t CRC_table_command_1[] =
{
0x01, 0x03, 0x05, 0x07, 0x09, 0x0B, 0x0D, 0x0F,
0x11, 0x13, 0x15, 0x17, 0x19, 0x1B, 0x1D, 0x1F,
0x21, 0x23, 0x25, 0x27, 0x29, 0x2B, 0x2D, 0x2F,
0x31, 0x33, 0x35, 0x37, 0x39, 0x3B, 0x3D, 0x3F,
0x41, 0x43, 0x45, 0x47, 0x49, 0x4B, 0x4D, 0x4F,
0x51, 0x53, 0x55, 0x57, 0x59, 0x5B, 0x5D, 0x5F,
0x61, 0x63, 0x65, 0x67, 0x69, 0x6B, 0x6D, 0x6F,
0x71, 0x73, 0x75, 0x77, 0x79, 0x7B, 0x7D, 0x7F,
0x81, 0x83, 0x85, 0x87, 0x89, 0x8B, 0x8D, 0x8F,
0x91, 0x93, 0x95, 0x97, 0x99, 0x9B, 0x9D, 0x9F,
0xA1, 0xA3, 0xA5, 0xA7, 0xA9, 0xAB, 0xAD, 0xAF,
0xB1, 0xB3, 0xB5, 0xB7, 0xB9, 0xBB, 0xBD, 0xBF,
0xC1, 0xC3, 0xC5, 0xC7, 0xC9, 0xCB, 0xCD, 0xCF,
0xD1, 0xD3, 0xD5, 0xD7, 0xD9, 0xDB, 0xDD, 0xDF,
0xE1, 0xE3, 0xE5, 0xE7, 0xE9, 0xEB, 0xED, 0xEF,
0xF1, 0xF3, 0xF5, 0xF7, 0xF9, 0xFB, 0xFD, 0xFF,
0x2E, 0x2C, 0x2A, 0x28, 0x26, 0x24, 0x22, 0x20,
0x3E, 0x3C, 0x3A, 0x38, 0x36, 0x34, 0x32, 0x30,
0x0E, 0x0C, 0x0A, 0x08, 0x06, 0x04, 0x02, 0x00,
0x1E, 0x1C, 0x1A, 0x18, 0x16, 0x14, 0x12, 0x10,
0x6E, 0x6C, 0x6A, 0x68, 0x66, 0x64, 0x62, 0x60,
0x7E, 0x7C, 0x7A, 0x78, 0x76, 0x74, 0x72, 0x70,
0x4E, 0x4C, 0x4A, 0x48, 0x46, 0x44, 0x42, 0x40,
0x5E, 0x5C, 0x5A, 0x58, 0x56, 0x54, 0x52, 0x50,
0xAE, 0xAC, 0xAA, 0xA8, 0xA6, 0xA4, 0xA2, 0xA0,
0xBE, 0xBC, 0xBA, 0xB8, 0xB6, 0xB4, 0xB2, 0xB0,
0x8E, 0x8C, 0x8A, 0x88, 0x86, 0x84, 0x82, 0x80,
0x9E, 0x9C, 0x9A, 0x98, 0x96, 0x94, 0x92, 0x90,
0xEE, 0xEC, 0xEA, 0xE8, 0xE6, 0xE4, 0xE2, 0xE0,
0xFE, 0xFC, 0xFA, 0xF8, 0xF6, 0xF4, 0xF2, 0xF0,
0xCE, 0xCC, 0xCA, 0xC8, 0xC6, 0xC4, 0xC2, 0xC0,
0xDE, 0xDC, 0xDA, 0xD8, 0xD6, 0xD4, 0xD2, 0xD0
};
int32_t CRC_table_command_0[] =
{
0x00, 0x02, 0x04, 0x06, 0x08, 0x0A, 0x0C, 0x0E,
0x10, 0x12, 0x14, 0x16, 0x18, 0x1A, 0x1C, 0x1E,
0x20, 0x22, 0x24, 0x26, 0x28, 0x2A, 0x2C, 0x2E,
0x30, 0x32, 0x34, 0x36, 0x38, 0x3A, 0x3C, 0x3E,
0x40, 0x42, 0x44, 0x46, 0x48, 0x4A, 0x4C, 0x4E,
0x50, 0x52, 0x54, 0x56, 0x58, 0x5A, 0x5C, 0x5E,
0x60, 0x62, 0x64, 0x66, 0x68, 0x6A, 0x6C, 0x6E,
0x70, 0x72, 0x74, 0x76, 0x78, 0x7A, 0x7C, 0x7E,
0x80, 0x82, 0x84, 0x86, 0x88, 0x8A, 0x8C, 0x8E,
0x90, 0x92, 0x94, 0x96, 0x98, 0x9A, 0x9C, 0x9E,
0xA0, 0xA2, 0xA4, 0xA6, 0xA8, 0xAA, 0xAC, 0xAE,
0xB0, 0xB2, 0xB4, 0xB6, 0xB8, 0xBA, 0xBC, 0xBE,
0xC0, 0xC2, 0xC4, 0xC6, 0xC8, 0xCA, 0xCC, 0xCE,
0xD0, 0xD2, 0xD4, 0xD6, 0xD8, 0xDA, 0xDC, 0xDE,
0xE0, 0xE2, 0xE4, 0xE6, 0xE8, 0xEA, 0xEC, 0xEE,
0xF0, 0xF2, 0xF4, 0xF6, 0xF8, 0xFA, 0xFC, 0xFE,
0x2F, 0x2D, 0x2B, 0x29, 0x27, 0x25, 0x23, 0x21,
0x3F, 0x3D, 0x3B, 0x39, 0x37, 0x35, 0x33, 0x31,
0x0F, 0x0D, 0x0B, 0x09, 0x07, 0x05, 0x03, 0x01,
0x1F, 0x1D, 0x1B, 0x19, 0x17, 0x15, 0x13, 0x11,
0x6F, 0x6D, 0x6B, 0x69, 0x67, 0x65, 0x63, 0x61,
0x7F, 0x7D, 0x7B, 0x79, 0x77, 0x75, 0x73, 0x71,
0x4F, 0x4D, 0x4B, 0x49, 0x47, 0x45, 0x43, 0x41,
0x5F, 0x5D, 0x5B, 0x59, 0x57, 0x55, 0x53, 0x51,
0xAF, 0xAD, 0xAB, 0xA9, 0xA7, 0xA5, 0xA3, 0xA1,
0xBF, 0xBD, 0xBB, 0xB9, 0xB7, 0xB5, 0xB3, 0xB1,
0x8F, 0x8D, 0x8B, 0x89, 0x87, 0x85, 0x83, 0x81,
0x9F, 0x9D, 0x9B, 0x99, 0x97, 0x95, 0x93, 0x91,
0xEF, 0xED, 0xEB, 0xE9, 0xE7, 0xE5, 0xE3, 0xE1,
0xFF, 0xFD, 0xFB, 0xF9, 0xF7, 0xF5, 0xF3, 0xF1,
0xCF, 0xCD, 0xCB, 0xC9, 0xC7, 0xC5, 0xC3, 0xC1,
0xDF, 0xDD, 0xDB, 0xD9, 0xD7, 0xD5, 0xD3, 0xD1
};
while(1){
printf("input command(Hex) : ");
scanf("%x",&input_command_int);
CRC = 0b11111111;
input_command_int = input_command_int << 8;
for (register int32_t i = 0; i < 32; ++i)
{
input_command_binary[i] = (input_command_int & (1 << (31 - i))) >> (31 - i);
}
for (set_position = 0; set_position < 32; set_position ++)
{
CRC = (input_command_binary[set_position] == 1)? CRC_table_command_1[CRC] : CRC_table_command_0[CRC] ;
}
printf("CRC : %02X\n", CRC);
}
return 0;
}