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em4x05 getting better

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got the read/dump cmds working pretty well
some tweaking still left to do.
This commit is contained in:
marshmellow42 2017-02-17 01:33:27 -05:00
commit e39a92bb1d
3 changed files with 169 additions and 175 deletions
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8
common/lfdemod.c
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@ -62,7 +62,7 @@ uint8_t parityTest(uint32_t bits, uint8_t bitLen, uint8_t pType)
for (uint8_t i = 0; i < bitLen; i++){
ans ^= ((bits >> i) & 1);
}
//PrintAndLog("DEBUG: ans: %d, ptype: %d",ans,pType);
if (g_debugMode) prnt("DEBUG: ans: %d, ptype: %d, bits: %08X",ans,pType,bits);
return (ans == pType);
}
@ -73,11 +73,13 @@ size_t removeParity(uint8_t *BitStream, size_t startIdx, uint8_t pLen, uint8_t p
{
uint32_t parityWd = 0;
size_t j = 0, bitCnt = 0;
for (int word = 0; word < (bLen); word+=pLen){
for (int bit=0; bit < pLen; bit++){
for (int word = 0; word < (bLen); word+=pLen) {
for (int bit=0; bit < pLen; bit++) {
parityWd = (parityWd << 1) | BitStream[startIdx+word+bit];
BitStream[j++] = (BitStream[startIdx+word+bit]);
}
if (word+pLen >= bLen) break;
j--; // overwrite parity with next data
// if parity fails then return 0
switch (pType) {