Merge branch 'master' of https://github.com/Proxmark/proxmark3

[proxmark3-svn] / common / lfdemod.c

diff --git a/common/lfdemod.c b/common/lfdemod.c
index e0d20464cc4d65973e72bae0b5cf4533f703dbe8..144783198e1684a8be432a5abdcc5f5d296c5147 100644 (file)
--- 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)
 {
 
 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++){
     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;
 
        }
        if(justNoise) return 0;