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fft bin selection in hackrf_sweep binary output, similar to text output

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Michael Ossmann
2017-02-07 18:02:52 -07:00
parent 00d5b1c575
commit 05759ce1c8
1 changed files with 6 additions and 2 deletions
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8
host/hackrf-tools/src/hackrf_sweep.c
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@ -233,10 +233,14 @@ int rx_callback(hackrf_transfer* transfer) {
pwr[i] = logPower(fftwOut[i], 1.0f / fftSize); pwr[i] = logPower(fftwOut[i], 1.0f / fftSize);
} }
if(binary_output) { if(binary_output) {
float_freq = frequency; float_freq = frequency + DEFAULT_SAMPLE_RATE_HZ / 4;
float_freq /= FREQ_ONE_MHZ; float_freq /= FREQ_ONE_MHZ;
fwrite(&float_freq, sizeof(float), 1, stdout); fwrite(&float_freq, sizeof(float), 1, stdout);
fwrite(pwr, sizeof(float), fftSize, stdout); fwrite(&pwr[1+(fftSize*5)/8], sizeof(float), fftSize/4, stdout);
float_freq = frequency + DEFAULT_SAMPLE_RATE_HZ / 2;
float_freq /= FREQ_ONE_MHZ;
fwrite(&float_freq, sizeof(float), 1, stdout);
fwrite(&pwr[1+fftSize/8], sizeof(float), fftSize/4, stdout);
} else { } else {
time_now = time(NULL); time_now = time(NULL);
fft_time = localtime(&time_now); fft_time = localtime(&time_now);