ADD: 'lf search' - added a rudimentary identification of IDTECK tags, will demod...

[proxmark3-svn] / common / lfdemod.c

diff --git a/common/lfdemod.c b/common/lfdemod.c
index c35ce561881757cc4b3d15c7114c3187f86acf0d..4613270383ed737511d525e739f5da7692579588 100644 (file)
--- a/common/lfdemod.c
+++ b/common/lfdemod.c
@@ -822,6 +822,19 @@ int NedapDemod(uint8_t *dest, size_t *size) {
        return (int) startIdx;
 }
 
+// Find IDTEC PSK1, RF  Preamble == 0x4944544B, Demodsize 64bits
+// by iceman
+int IdteckDemodPSK(uint8_t *dest, size_t *size) {
+       //make sure buffer has data
+       if (*size < 64*2) return -1;    
+       size_t startIdx = 0;
+       uint8_t preamble[] = {0,1,0,0,1,0,0,1,0,1,0,0,0,1,0,0,0,1,0,1,0,1,0,0,0,1,0,0,1,0,1,1};
+       uint8_t errChk = preambleSearch(dest, preamble, sizeof(preamble), size, &startIdx);
+       if (errChk == 0) return -2; //preamble not found
+       if (*size != 64) return -3; // wrong demoded size
+       return (int) startIdx;
+}
+
 // by marshmellow
 // to detect a wave that has heavily clipped (clean) samples
 uint8_t DetectCleanAskWave(uint8_t dest[], size_t size, uint8_t high, uint8_t low)