github/RRG-Proxmark3
1
0
Fork 0
mirror of https://github.com/RfidResearchGroup/proxmark3.git synced 2025-08-14 18:48:13 -07:00
Code Issues Projects Releases Packages Wiki Activity Actions

FIX: 'lf presco' demod fixes.

Browse source 
ADD: 'lf search' now also looks for Presco.

I know that the helptext is wrong (d should be p)
This commit is contained in:
iceman1001 2016-12-15 00:01:31 +01:00
commit d48175d4f4
4 changed files with 38 additions and 22 deletions
Download patch file Download diff file Expand all files Collapse all files

9
common/lfdemod.c
View file

@ -711,13 +711,12 @@ int Visa2kDemod_AM(uint8_t *dest, size_t *size) {
// find presco preamble 0x10D in already demoded data
int PrescoDemod(uint8_t *dest, size_t *size) {
//make sure buffer has data
if (*size < 64*2) return -2;
if (*size < 128*2) return -1; //make sure buffer has data
size_t startIdx = 0;
uint8_t preamble[] = {1,0,0,0,0,1,1,0,1,0,0,0,0,0,0,0,0,0,0,0};
uint8_t preamble[] = {0,0,0,1,0,0,0,0,1,1,0,1,0,0,0,0,0,0,0,0,0,0,0};
uint8_t errChk = preambleSearch(dest, preamble, sizeof(preamble), size, &startIdx);
if (errChk == 0) return -4; //preamble not found
if (errChk == 0) return -2; //preamble not found
if (*size != 128) return -3; //wrong demoded size
//return start position
return (int) startIdx;
}