X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/04bb05670dfaac4ba29bbd614c3530036fdb6433..b7eddc14db9262a51ad3100ade7386d03500ace8:/common/lfdemod.c

diff --git a/common/lfdemod.c b/common/lfdemod.c
index c0f2bb71..f13a567c 100644
--- a/common/lfdemod.c
+++ b/common/lfdemod.c
@@ -526,7 +526,7 @@ int ParadoxdemodFSK(uint8_t *dest, size_t *size, uint32_t *hi2, uint32_t *hi, ui
 	return (int)startIdx;
 }
 
-uint32_t bytebits_to_byte(uint8_t* src, size_t numbits)
+uint32_t bytebits_to_byte(uint8_t *src, size_t numbits)
 {
 	uint32_t num = 0;
 	for(int i = 0 ; i < numbits ; i++)
@@ -538,13 +538,12 @@ uint32_t bytebits_to_byte(uint8_t* src, size_t numbits)
 }
 
 //least significant bit first
-uint32_t bytebits_to_byteLSBF(uint8_t* src, size_t numbits)
+uint32_t bytebits_to_byteLSBF(uint8_t *src, size_t numbits)
 {
 	uint32_t num = 0;
 	for(int i = 0 ; i < numbits ; i++)
 	{
-		num = (num << 1) | (*src);
-		src++;
+		num = (num << 1) | *(src + (numbits-(i+1)));
 	}
 	return num;
 }
@@ -581,7 +580,7 @@ int IOdemodFSK(uint8_t *dest, size_t size)
 
 // by marshmellow
 // takes a array of binary values, start position, length of bits per parity (includes parity bit),
-//   Parity Type (1 for odd 0 for even), and binary Length (length to run) 
+//   Parity Type (1 for odd; 0 for even; 2 for just drop it), and binary Length (length to run) 
 size_t removeParity(uint8_t *BitStream, size_t startIdx, uint8_t pLen, uint8_t pType, size_t bLen)
 {
 	uint32_t parityWd = 0;
@@ -593,7 +592,9 @@ size_t removeParity(uint8_t *BitStream, size_t startIdx, uint8_t pLen, uint8_t p
 		}
 		j--;
 		// if parity fails then return 0
-		if (parityTest(parityWd, pLen, pType) == 0) return -1;
+		if (pType != 2) {
+			if (parityTest(parityWd, pLen, pType) == 0) return -1;
+		}
 		bitCnt+=(pLen-1);
 		parityWd = 0;
 	}
@@ -604,7 +605,7 @@ size_t removeParity(uint8_t *BitStream, size_t startIdx, uint8_t pLen, uint8_t p
 
 // Ask/Biphase Demod then try to locate an ISO 11784/85 ID
 // BitStream must contain previously askrawdemod and biphasedemoded data
-int ISO11784demodBI(uint8_t *dest, size_t *size)
+int FDXBdemodBI(uint8_t *dest, size_t *size)
 {
 	//make sure buffer has enough data
 	if (*size < 128) return -1;