From: Martin Holst Swende <martin@swende.se>
Date: Tue, 6 Jan 2015 17:59:59 +0000 (+0100)
Subject: Changed io threshold to 140, fixed boolean error in comparison
X-Git-Tag: v2.0.0-rc1~62^2
X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/commitdiff_plain/d2197f967aaf4e58ffd9df387c228bf5354c9e0c?ds=inline;hp=-c

Changed io threshold to 140, fixed boolean error in comparison
---

d2197f967aaf4e58ffd9df387c228bf5354c9e0c
diff --git a/common/lfdemod.c b/common/lfdemod.c
index e0d20464..14478319 100644
--- a/common/lfdemod.c
+++ b/common/lfdemod.c
@@ -592,14 +592,14 @@ uint32_t bytebits_to_byte(uint8_t* src, int numbits)
 
 int IOdemodFSK(uint8_t *dest, size_t size)
 {
-	static const uint8_t THRESHOLD = 170;
+	static const uint8_t THRESHOLD = 140;
     uint32_t idx=0;
     //make sure buffer has data
     if (size < 66) return -1;
     //test samples are not just noise
 	uint8_t justNoise = 1;
 	for(idx=0;idx< size && justNoise ;idx++){
-		justNoise = dest[idx] > THRESHOLD;
+		justNoise = dest[idx] < THRESHOLD;
 	}
 	if(justNoise) return 0;