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default frequency range and error checking of frequency range in hackrf_sweep

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This commit is contained in:
Michael Ossmann
2017-02-06 20:39:14 -07:00
parent 3ad5113201
commit d3b30eca59
1 changed files with 36 additions and 23 deletions
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57
host/hackrf-tools/src/hackrf_sweep.c
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@ -92,13 +92,13 @@ int gettimeofday(struct timeval *tv, void* ignored) {
#define FREQ_ONE_MHZ (1000000ull) #define FREQ_ONE_MHZ (1000000ull)
#define FREQ_MIN_HZ (0ull) /* 0 Hz */ #define FREQ_MIN_MHZ (0) /* 0 MHz */
#define FREQ_MAX_HZ (7250000000ull) /* 7250MHz */ #define FREQ_MAX_MHZ (7250) /* 7250 MHz */
#define DEFAULT_SAMPLE_RATE_HZ (20000000) /* 20MHz default sample rate */ #define DEFAULT_SAMPLE_RATE_HZ (20000000) /* 20MHz default sample rate */
#define DEFAULT_BASEBAND_FILTER_BANDWIDTH (15000000) /* 5MHz default */ #define DEFAULT_BASEBAND_FILTER_BANDWIDTH (15000000) /* 5MHz default */
#define FREQ_STEP (DEFAULT_SAMPLE_RATE_HZ / FREQ_ONE_MHZ) #define TUNE_STEP (DEFAULT_SAMPLE_RATE_HZ / FREQ_ONE_MHZ)
#define MAX_FREQ_COUNT 1000 #define MAX_FREQ_COUNT 1000
#define DEFAULT_SAMPLE_COUNT 0x4000 #define DEFAULT_SAMPLE_COUNT 0x4000
@ -171,8 +171,8 @@ uint32_t amp_enable;
bool antenna = false; bool antenna = false;
uint32_t antenna_enable; uint32_t antenna_enable;
uint32_t freq_min; uint32_t freq_min = 10;
uint32_t freq_max; uint32_t freq_max = 6000;
bool binary_output = false; bool binary_output = false;
@ -215,7 +215,7 @@ int rx_callback(hackrf_transfer* transfer) {
buf += SAMPLES_PER_BLOCK; buf += SAMPLES_PER_BLOCK;
break; break;
} }
if(FREQ_MAX_HZ < (FREQ_ONE_MHZ*frequency)) { if(FREQ_MAX_MHZ < frequency) {
buf += SAMPLES_PER_BLOCK; buf += SAMPLES_PER_BLOCK;
break; break;
} }
@ -242,7 +242,7 @@ int rx_callback(hackrf_transfer* transfer) {
time_now = time(NULL); time_now = time(NULL);
fft_time = localtime(&time_now); fft_time = localtime(&time_now);
strftime(time_str, 50, "%Y-%m-%d, %H:%M:%S", fft_time); strftime(time_str, 50, "%Y-%m-%d, %H:%M:%S", fft_time);
printf("%s, %" PRIu64 ", %" PRIu64 ", %.2f, %d", printf("%s, %" PRIu64 ", %" PRIu64 ", %.2f, %u",
time_str, time_str,
(uint64_t)((FREQ_ONE_MHZ*frequency)-((DEFAULT_SAMPLE_RATE_HZ*3)/8)), (uint64_t)((FREQ_ONE_MHZ*frequency)-((DEFAULT_SAMPLE_RATE_HZ*3)/8)),
(uint64_t)((FREQ_ONE_MHZ*frequency)-(DEFAULT_SAMPLE_RATE_HZ/8)), (uint64_t)((FREQ_ONE_MHZ*frequency)-(DEFAULT_SAMPLE_RATE_HZ/8)),
@ -252,7 +252,7 @@ int rx_callback(hackrf_transfer* transfer) {
printf(", %.2f", pwr[i]); printf(", %.2f", pwr[i]);
} }
printf("\n"); printf("\n");
printf("%s, %" PRIu64 ", %" PRIu64 ", %.2f, %d", printf("%s, %" PRIu64 ", %" PRIu64 ", %.2f, %u",
time_str, time_str,
(uint64_t)((FREQ_ONE_MHZ*frequency)+(DEFAULT_SAMPLE_RATE_HZ/8)), (uint64_t)((FREQ_ONE_MHZ*frequency)+(DEFAULT_SAMPLE_RATE_HZ/8)),
(uint64_t)((FREQ_ONE_MHZ*frequency)+((DEFAULT_SAMPLE_RATE_HZ*3)/8)), (uint64_t)((FREQ_ONE_MHZ*frequency)+((DEFAULT_SAMPLE_RATE_HZ*3)/8)),
@ -275,7 +275,7 @@ static void usage() {
fprintf(stderr, "\t[-h] # this help\n"); fprintf(stderr, "\t[-h] # this help\n");
fprintf(stderr, "\t[-d serial_number] # Serial number of desired HackRF.\n"); fprintf(stderr, "\t[-d serial_number] # Serial number of desired HackRF.\n");
fprintf(stderr, "\t[-a amp_enable] # RX RF amplifier 1=Enable, 0=Disable.\n"); fprintf(stderr, "\t[-a amp_enable] # RX RF amplifier 1=Enable, 0=Disable.\n");
fprintf(stderr, "\t[-f freq_min:freq_max # Specify minimum & maximum sweep frequencies (MHz).\n"); fprintf(stderr, "\t[-f freq_min:freq_max] # Specify minimum & maximum sweep frequencies (MHz).\n");
fprintf(stderr, "\t[-p antenna_enable] # Antenna port power, 1=Enable, 0=Disable.\n"); fprintf(stderr, "\t[-p antenna_enable] # Antenna port power, 1=Enable, 0=Disable.\n");
fprintf(stderr, "\t[-l gain_db] # RX LNA (IF) gain, 0-40dB, 8dB steps\n"); fprintf(stderr, "\t[-l gain_db] # RX LNA (IF) gain, 0-40dB, 8dB steps\n");
fprintf(stderr, "\t[-g gain_db] # RX VGA (baseband) gain, 0-62dB, 2dB steps\n"); fprintf(stderr, "\t[-g gain_db] # RX VGA (baseband) gain, 0-62dB, 2dB steps\n");
@ -313,6 +313,7 @@ int main(int argc, char** argv) {
unsigned int lna_gain=16, vga_gain=20; unsigned int lna_gain=16, vga_gain=20;
uint16_t frequencies[MAX_FREQ_COUNT]; uint16_t frequencies[MAX_FREQ_COUNT];
uint32_t num_samples = DEFAULT_SAMPLE_COUNT; uint32_t num_samples = DEFAULT_SAMPLE_COUNT;
int step_count;
while( (opt = getopt(argc, argv, "a:f:p:l:g:d:n:Bh?")) != EOF ) { while( (opt = getopt(argc, argv, "a:f:p:l:g:d:n:Bh?")) != EOF ) {
result = HACKRF_SUCCESS; result = HACKRF_SUCCESS;
@ -329,17 +330,6 @@ int main(int argc, char** argv) {
case 'f': case 'f':
result = parse_u32_range(optarg, &freq_min, &freq_max); result = parse_u32_range(optarg, &freq_min, &freq_max);
fprintf(stderr, "Scanning %uMHz to %uMHz\n", freq_min, freq_max);
frequencies[ifreq++] = freq_min;
odd = true;
while(frequencies[ifreq-1] <= freq_max) {
if (odd)
frequencies[ifreq] = frequencies[ifreq-1] + FREQ_STEP / 4;
else
frequencies[ifreq] = frequencies[ifreq-1] + 3*(FREQ_STEP/4);
ifreq++;
odd = !odd;
}
break; break;
case 'p': case 'p':
@ -413,12 +403,35 @@ int main(int argc, char** argv) {
} }
} }
if (ifreq == 0) { if (freq_min >= freq_max) {
fprintf(stderr, "argument error: must specify sweep frequency range (-f).\n"); fprintf(stderr, "argument error: freq_max must be greater than freq_min.\n");
usage(); usage();
return EXIT_FAILURE; return EXIT_FAILURE;
} }
/* Plan a whole number of steps with bandwidth equal to the sample rate. */
step_count = 1 + (freq_max - freq_min - 1) / TUNE_STEP;
freq_max = freq_min + step_count * TUNE_STEP;
if (FREQ_MAX_MHZ <freq_max) {
fprintf(stderr, "argument error: freq_max may not be higher than %u.\n",
FREQ_MAX_MHZ);
usage();
return EXIT_FAILURE;
}
fprintf(stderr, "Sweeping from %u MHz to %u MHz\n", freq_min, freq_max);
frequencies[0] = freq_min;
odd = true;
for(ifreq = 1; ifreq < step_count*2; ifreq++) {
if (odd) {
frequencies[ifreq] = frequencies[ifreq-1] + TUNE_STEP / 4;
} else {
frequencies[ifreq] = frequencies[ifreq-1] + 3*(TUNE_STEP/4);
}
odd = !odd;
}
fftSize = FFT_SIZE; fftSize = FFT_SIZE;
fftwIn = (fftwf_complex*)fftwf_malloc(sizeof(fftwf_complex) * fftSize); fftwIn = (fftwf_complex*)fftwf_malloc(sizeof(fftwf_complex) * fftSize);
fftwOut = (fftwf_complex*)fftwf_malloc(sizeof(fftwf_complex) * fftSize); fftwOut = (fftwf_complex*)fftwf_malloc(sizeof(fftwf_complex) * fftSize);