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CHG: centralized the LF signal properties LOW/HIGH/MEAN/AMPLITUDE/ISNOISE into one struct.

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CHG: 'data raw ar'  - didn't take in consideration the command line parameter CLOCK.
This commit is contained in:
iceman1001 2017-11-06 15:06:42 +01:00
commit 881c7115a7
9 changed files with 221 additions and 192 deletions
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34
client/graph.c
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@ -265,37 +265,3 @@ uint8_t fskClocks(uint8_t *fc1, uint8_t *fc2, uint8_t *rf1, bool verbose, int *f
return 1;
}
//test samples are not just noise
// By measuring mean and look at amplitude of signal from HIGH / LOW,
// we can detect noise
bool is_justnoise(int *bits, uint32_t size) {
if ( bits == NULL ) return true;
if ( size < 100 ) return true;
//might not be high enough for noisy environments
#define NOICE_AMPLITUDE_THRESHOLD 10;
int32_t sum = 0, mean = 0, high = -127, low = 127;
for ( size_t i = 0; i < size; i++) {
if ( bits[i] < low ) low = bits[i];
if ( bits[i] > high ) high = bits[i];
sum += bits[i];
}
mean = sum / (int)size;
// measure amplitude of signal
bool isnoise = ABS(high - mean) < NOICE_AMPLITUDE_THRESHOLD;
if (g_debugMode == 1)
PrintAndLog("DEBUG: (is_justnoise) mean %i | hi %i | low %i | IS NOISE %c", mean, high, low, isnoise?'Y':'N');
return isnoise;
/*
bool isNoise = true;
for(int i=0; i < size && isNoise; i++)
isNoise = bits[i] < THRESHOLD;
return isNoise;
*/
}