From 96faed2124908faee3a251b7e5a294327218a7ff Mon Sep 17 00:00:00 2001
From: iceman1001 <iceman@iuse.se>
Date: Mon, 2 May 2016 14:06:08 +0200
Subject: [PATCH] CHG:  added the ASK/Biphase demod of signal for NEDAP demod.
 ADD: 'LF SEARCH'  now also checks for NEDAP.

---
 client/cmdlf.c      | 5 +++++
 client/cmdlfnedap.c | 8 +++++++-
 common/lfdemod.c    | 1 +
 3 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/client/cmdlf.c b/client/cmdlf.c
index 09bd5a1a..0093c5be 100644
--- a/client/cmdlf.c
+++ b/client/cmdlf.c
@@ -1119,6 +1119,11 @@ int CmdLFfind(const char *Cmd) {
 		PrintAndLog("\nValid NexWatch ID Found!");
 		return 1;
 	}
+	ans=CmdFSKdemodNedap("");
+	if (ans>0) {
+		PrintAndLog("\nValid NEDAP ID Found!");
+		return 1;
+	}
 	// TIdemod?
 	
 
diff --git a/client/cmdlfnedap.c b/client/cmdlfnedap.c
index bae9d85e..f15813f1 100644
--- a/client/cmdlfnedap.c
+++ b/client/cmdlfnedap.c
@@ -78,7 +78,13 @@ int CmdFSKdemodNedap(const char *Cmd) {
 	size_t size = getFromGraphBuf(BitStream);
 	if (size==0) return 0;
 
-	//get binary from fsk wave
+	//get binary from ask wave
+	if (!ASKbiphaseDemod("0 64 1 0", FALSE)) {
+		if (g_debugMode) PrintAndLog("Error NEDAP: ASKbiphaseDemod failed");
+		return 0;
+	}
+	size_t size = DemodBufferLen;
+
 	int idx = NedapDemod(BitStream, &size);
 	if (idx < 0){
 		if (g_debugMode){
diff --git a/common/lfdemod.c b/common/lfdemod.c
index 3bc246a3..047c9e28 100644
--- a/common/lfdemod.c
+++ b/common/lfdemod.c
@@ -768,6 +768,7 @@ int PyramiddemodFSK(uint8_t *dest, size_t *size)
 int NedapDemod(uint8_t *dest, size_t *size) {
 	//make sure buffer has data
 	if (*size < 128) return -3;
+
 	size_t startIdx = 0;
 	uint8_t preamble[] = {1,1,1,1,1,1,1,1,1,0};
 	uint8_t errChk = preambleSearch(dest, preamble, sizeof(preamble), size, &startIdx);
-- 
2.39.2