12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061 |
- #include "sdk_common.h"
- #if NRF_MODULE_ENABLED(CRC16)
- #include "crc16.h"
- #include <stdlib.h>
- uint16_t crc16_compute(uint8_t const * p_data, uint32_t size, uint16_t const * p_crc)
- {
- uint16_t crc = (p_crc == NULL) ? 0xFFFF : *p_crc;
- for (uint32_t i = 0; i < size; i++)
- {
- crc = (uint8_t)(crc >> 8) | (crc << 8);
- crc ^= p_data[i];
- crc ^= (uint8_t)(crc & 0xFF) >> 4;
- crc ^= (crc << 8) << 4;
- crc ^= ((crc & 0xFF) << 4) << 1;
- }
- return crc;
- }
- #endif
|