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rem: 'hf 15' - removed old bit-looped crc implementation

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iceman1001 2018-01-29 16:36:59 +01:00
commit 848decd711
1 changed files with 0 additions and 27 deletions
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27
common/iso15693tools.c
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@ -9,29 +9,6 @@
#include "iso15693tools.h" #include "iso15693tools.h"
// The CRC as described in ISO 15693-Part 3-Annex C // The CRC as described in ISO 15693-Part 3-Annex C
// v buffer with data
// n length
// returns crc as 16bit value
/*
uint16_t Iso15693Crc(uint8_t *v, int n)
{
uint32_t reg;
int i, j;
reg = 0xffff;
for(i = 0; i < n; i++) {
reg = reg ^ ((uint32_t)v[i]);
for (j = 0; j < 8; j++) {
if (reg & 0x0001) {
reg = (reg >> 1) ^ 0x8408;
} else {
reg = (reg >> 1);
}
}
}
return ~(uint16_t)(reg & 0xffff);
}
*/
uint16_t Iso15693Crc(uint8_t *d, size_t n){ uint16_t Iso15693Crc(uint8_t *d, size_t n){
init_table(CRC_15); init_table(CRC_15);
return crc16_x25(d, n); return crc16_x25(d, n);
@ -54,10 +31,6 @@ int Iso15693AddCrc(uint8_t *d, size_t n) {
// If calculated with crc bytes, the residue should be 0xF0B8 // If calculated with crc bytes, the residue should be 0xF0B8
bool Iso15693CheckCrc(uint8_t *d, size_t n) { bool Iso15693CheckCrc(uint8_t *d, size_t n) {
return (Iso15693Crc(d, n) == ISO15_CRC_CHECK ); return (Iso15693Crc(d, n) == ISO15_CRC_CHECK );
//uint16_t crc = Iso15693Crc(v, n-2);
// if ( (( crc & 0xff ) == v[n-2]) && (( crc >> 8 ) == v[n-1]) )
// return true;
// return false;
} }
int sprintf(char *str, const char *format, ...); int sprintf(char *str, const char *format, ...);