X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/2dcf60f3df145625781982040ae9c80d30e40482..9945a928c76e7ebd068ee7f63410517f41645633:/common/lfdemod.c

diff --git a/common/lfdemod.c b/common/lfdemod.c
index 5fec933f..11340ef0 100644
--- a/common/lfdemod.c
+++ b/common/lfdemod.c
@@ -696,6 +696,19 @@ int VikingDemod_AM(uint8_t *dest, size_t *size) {
 	return (int) startIdx;
 }
 
+// by iceman
+// find Visa2000 preamble in already demoded data
+int Visa2kDemod_AM(uint8_t *dest, size_t *size) {
+	if (*size < 96*2) return -1; //make sure buffer has data
+	size_t startIdx = 0;
+	uint8_t preamble[] = {0,1,0,1,0,1,1,0,0,1,0,0,1,0,0,1,0,1,0,1,0,0,1,1,0,0,1,1,0,0,1,0};
+	uint8_t errChk = preambleSearch(dest, preamble, sizeof(preamble), size, &startIdx);
+	if (errChk == 0) return -2; //preamble not found
+	if (*size != 96) return -3; //wrong demoded size
+	//return start position
+	return (int) startIdx;
+}
+
 // find presco preamble 0x10D in already demoded data
 int PrescoDemod(uint8_t *dest, size_t *size) {
 	//make sure buffer has data