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Write power values to stdout

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This commit is contained in:
Mike Walters
2016-07-30 06:25:13 +01:00
parent d9b26c5ffa
commit 316d7be6c2
1 changed files with 3 additions and 4 deletions
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7
host/hackrf-tools/src/hackrf_sweep.c
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@ -163,7 +163,7 @@ int rx_callback(hackrf_transfer* transfer) {
ssize_t bytes_to_write;
ssize_t bytes_written;
int8_t* buf;
uint16_t frequency;
float frequency;
int i, j;
if( fd != NULL )
@ -174,7 +174,6 @@ int rx_callback(hackrf_transfer* transfer) {
for(j=0; j<16; j++) {
if(buf[0] == 0x7F && buf[1] == 0x7F) {
frequency = *(uint16_t*)&buf[2];
fprintf(stderr, "Received sweep buffer(%uMHz)\n", frequency);
}
/* copy to fftwIn as floats */
buf += 4;
@ -189,9 +188,9 @@ int rx_callback(hackrf_transfer* transfer) {
// to rearrange the data
int k = i ^ (fftSize >> 1);
pwr[i] = logPower(fftwOut[k], 1.0f / fftSize);
fprintf(stderr, "%f\n", pwr[i]);
}
fprintf(stderr, "\n");
fwrite(&frequency, sizeof(float), 1, stdout);
fwrite(pwr, sizeof(float), fftSize, stdout);
}
bytes_written = fwrite(transfer->buffer, 1, bytes_to_write, fd);