reflow-oven-control-sw/error-mem-viewer/src/crc.c

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2020-11-29 17:18:28 +01:00
#include <error-mem-viewer/crc.h>
uint32_t do_crc(uint32_t init, uint32_t data)
{
uint32_t crc = init;
uint32_t cnt;
for(cnt=0; cnt < 32; cnt++)
{
crc = ((int32_t)(crc ^ data))<0 ? (crc << 1) ^ 0x04C11DB7 : crc << 1;
data <<=1;
}
return crc;
}
uint32_t calculate_stm_crc(uint32_t *data, size_t len)
{
uint32_t crc = ~0U;
while(len--) {
crc = do_crc(crc, *data++);
}
return crc;
}