Created
July 6, 2014 16:36
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Simple CRC-16-MCRF4XX C implementation.
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| #include <stdint.h> | |
| #include <stddef.h> | |
| uint16_t crc16_mcrf4xx(uint16_t crc, uint8_t *data, size_t len) | |
| { | |
| if (!data || len < 0) | |
| return crc; | |
| while (len--) { | |
| crc ^= *data++; | |
| for (int i=0; i<8; i++) { | |
| if (crc & 1) crc = (crc >> 1) ^ 0x8408; | |
| else crc = (crc >> 1); | |
| } | |
| } | |
| return crc; | |
| } |
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The initial implementation and the one by @mudgek1 produce different results for some numbers (e.g. 0x76). Which one is correct?