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Fixed: the dampening field detection is enhanced. If half a frame (clock rate) of values is within 40% of the mean value then it is a dampening field.

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This commit is contained in:
iceman1001 2014-10-07 21:34:02 +02:00
commit 7737657747
2 changed files with 83 additions and 51 deletions
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21
client/ui.c
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@ -113,16 +113,16 @@ int manchester_decode( int * data, const size_t len, uint8_t * dataout){
clock = GetT55x7Clock( data, len, high );
startindex = DetectFirstTransition(data, len, high);
PrintAndLog(" Clock : %d", clock);
PrintAndLog(" startindex : %d", startindex);
//PrintAndLog(" Clock : %d", clock);
//PrintAndLog(" startindex : %d", startindex);
if (high != 1)
bitlength = ManchesterConvertFrom255(data, len, bitStream, high, low, clock, startindex);
else
bitlength= ManchesterConvertFrom1(data, len, bitStream, clock, startindex);
if ( bitlength > 0 )
PrintPaddedManchester(bitStream, bitlength, clock);
//if ( bitlength > 0 )
// PrintPaddedManchester(bitStream, bitlength, clock);
memcpy(dataout, bitStream, bitlength);
@ -170,7 +170,7 @@ int manchester_decode( int * data, const size_t len, uint8_t * dataout){
default: break;
}
PrintAndLog(" Found Clock : %d - trying to adjust", clock);
//PrintAndLog(" Found Clock : %d - trying to adjust", clock);
// When detected clock is 31 or 33 then then return
int clockmod = clock%8;
@ -214,8 +214,7 @@ int manchester_decode( int * data, const size_t len, uint8_t * dataout){
startType = -1;
z = startIndex + (i*clock);
isDamp = 0;
/* Find out if we hit both high and low peaks */
for (j = 0; j < clock; j++)
{
@ -238,15 +237,13 @@ int manchester_decode( int * data, const size_t len, uint8_t * dataout){
// No high value found, are we in a dampening field?
if ( !hithigh ) {
//PrintAndLog(" # Entering damp test at index : %d (%d)", z+j, j);
for (j = 0; j < clock/2; j++)
for (j = 0; j < clock; j++)
{
if (
(data[z+j] <= dampHi && data[z+j] >= dampLow)
){
isDamp = 1;
isDamp++;
}
else
isDamp = 0;
}
}
@ -261,7 +258,7 @@ int manchester_decode( int * data, const size_t len, uint8_t * dataout){
else
dataout[bitIndex++] = 2;
if ( isDamp ) {
if ( isDamp > clock/2 ) {
firstST++;
}