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Merge pull request #41 from TitanMKD/master

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hackrf_transfer -b baseband_filter_bw_hz option
This commit is contained in:
Michael Ossmann
2013-03-24 11:16:14 -07:00
parent 4793030848 eefb98c4c0
commit 715b17db24
1 changed files with 130 additions and 29 deletions
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159
host/libhackrf/examples/hackrf_transfer.c
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@ -53,10 +53,37 @@
#define SAMPLES_TO_XFER_MAX (0x8000000000000000ull) /* Max value */
#define BASEBAND_FILTER_BW_MIN (1750000) /* 1.75 MHz min value */
#define BASEBAND_FILTER_BW_MAX (28000000) /* 28 MHz max value */
#if defined _WIN32
#define sleep(a) Sleep( (a*1000) )
#endif
typedef struct {
uint32_t bandwidth_hz;
} max2837_ft_t;
static const max2837_ft_t max2837_ft[] = {
{ 1750000 },
{ 2500000 },
{ 3500000 },
{ 5000000 },
{ 5500000 },
{ 6000000 },
{ 7000000 },
{ 8000000 },
{ 9000000 },
{ 10000000 },
{ 12000000 },
{ 14000000 },
{ 15000000 },
{ 20000000 },
{ 24000000 },
{ 28000000 },
{ 0 },
};
typedef enum {
TRANSCEIVER_MODE_OFF = 0,
TRANSCEIVER_MODE_RX = 1,
@ -118,6 +145,47 @@ int parse_u32(char* s, uint32_t* const value) {
}
}
/* Return final bw round down and less than expected bw. */
uint32_t compute_baseband_filter_bw_round_down_lt(const uint32_t bandwidth_hz)
{
const max2837_ft_t* p = max2837_ft;
while( p->bandwidth_hz != 0 )
{
if( p->bandwidth_hz >= bandwidth_hz ) {
break;
}
p++;
}
/* Round down (if no equal to first entry) */
if(p != max2837_ft)
{
p--;
}
return p->bandwidth_hz;
}
/* Return final bw. */
uint32_t compute_baseband_filter_bw(const uint32_t bandwidth_hz)
{
const max2837_ft_t* p = max2837_ft;
while( p->bandwidth_hz != 0 )
{
if( p->bandwidth_hz >= bandwidth_hz ) {
break;
}
p++;
}
/* Round down (if no equal to first entry) and if > bandwidth_hz */
if(p != max2837_ft)
{
if(p->bandwidth_hz > bandwidth_hz)
p--;
}
return p->bandwidth_hz;
}
volatile bool do_exit = false;
FILE* fd = NULL;
@ -134,7 +202,6 @@ uint64_t freq_hz;
bool amp = false;
uint32_t amp_enable;
bool sample_rate = false;
uint32_t sample_rate_hz;
@ -142,6 +209,9 @@ bool limit_num_samples = false;
uint64_t samples_to_xfer = 0;
uint64_t bytes_to_xfer = 0;
bool baseband_filter_bw = false;
uint32_t baseband_filter_bw_hz = 0;
int rx_callback(hackrf_transfer* transfer) {
int bytes_to_write;
@ -204,10 +274,11 @@ static void usage() {
printf("Usage:\n");
printf("\t-r <filename> # Receive data into file.\n");
printf("\t-t <filename> # Transmit data from file.\n");
printf("\t[-f set_freq_hz] # Set Freq in Hz between [%lldMHz, %lldMHz[.\n", FREQ_MIN_HZ/FREQ_ONE_MHZ, FREQ_MAX_HZ/FREQ_ONE_MHZ);
printf("\t[-f set_freq_hz] # Set Freq in Hz between [%lluMHz, %lluMHz[.\n", FREQ_MIN_HZ/FREQ_ONE_MHZ, FREQ_MAX_HZ/FREQ_ONE_MHZ);
printf("\t[-a set_amp] # Set Amp 1=Enable, 0=Disable.\n");
printf("\t[-s sample_rate_hz] # Set sample rate in Hz (5/10/12.5/16/20MHz, default %dMHz).\n", DEFAULT_SAMPLE_RATE_HZ/FREQ_ONE_MHZ);
printf("\t[-n num_samples] # Number of samples to transfer (default is unlimited).\n");
printf("\t[-b baseband_filter_bw_hz] # Set baseband filter bandwidth in MHz.\n\tPossible values: 1.75/2.5/3.5/5/5.5/6/7/8/9/10/12/14/15/20/24/28MHz, default < sample_rate_hz.\n" );
}
static hackrf_device* device = NULL;
@ -223,7 +294,7 @@ int main(int argc, char** argv) {
const char* path = NULL;
int result;
while( (opt = getopt(argc, argv, "r:t:f:a:s:n:")) != EOF )
while( (opt = getopt(argc, argv, "r:t:f:a:s:n:b:")) != EOF )
{
result = HACKRF_SUCCESS;
switch( opt ) {
@ -258,6 +329,11 @@ int main(int argc, char** argv) {
bytes_to_xfer = samples_to_xfer * 2ull;
break;
case 'b':
baseband_filter_bw = true;
result = parse_u32(optarg, &baseband_filter_bw_hz);
break;
default:
usage();
return EXIT_FAILURE;
@ -271,7 +347,8 @@ int main(int argc, char** argv) {
}
if (samples_to_xfer >= SAMPLES_TO_XFER_MAX) {
printf("argument error: num_samples must be less than %llu/%lluMio\n", SAMPLES_TO_XFER_MAX, SAMPLES_TO_XFER_MAX/FREQ_ONE_MHZ);
printf("argument error: num_samples must be less than %llu/%lluMio\n",
SAMPLES_TO_XFER_MAX, SAMPLES_TO_XFER_MAX/FREQ_ONE_MHZ);
usage();
return EXIT_FAILURE;
}
@ -284,7 +361,7 @@ int main(int argc, char** argv) {
return EXIT_FAILURE;
}
}
if( amp ) {
if( amp_enable > 1 )
{
@ -293,7 +370,36 @@ int main(int argc, char** argv) {
return EXIT_FAILURE;
}
}
if( sample_rate == false )
{
sample_rate_hz = DEFAULT_SAMPLE_RATE_HZ;
}
if( baseband_filter_bw )
{
/* Compute nearest freq for bw filter */
baseband_filter_bw_hz = compute_baseband_filter_bw(baseband_filter_bw_hz);
}else
{
/* Compute default value depending on sample rate */
baseband_filter_bw_hz = compute_baseband_filter_bw_round_down_lt(sample_rate_hz);
}
if (baseband_filter_bw_hz > BASEBAND_FILTER_BW_MAX) {
printf("argument error: baseband_filter_bw_hz must be less or equal to %u Hz/%.03f MHz\n",
BASEBAND_FILTER_BW_MAX, (float)(BASEBAND_FILTER_BW_MAX/FREQ_ONE_MHZ));
usage();
return EXIT_FAILURE;
}
if (baseband_filter_bw_hz < BASEBAND_FILTER_BW_MIN) {
printf("argument error: baseband_filter_bw_hz must be greater or equal to %u Hz/%.03f MHz\n",
BASEBAND_FILTER_BW_MIN, (float)(BASEBAND_FILTER_BW_MIN/FREQ_ONE_MHZ));
usage();
return EXIT_FAILURE;
}
if( transmit == receive )
{
if( transmit == true )
@ -330,6 +436,7 @@ int main(int argc, char** argv) {
result = hackrf_open(&device);
if( result != HACKRF_SUCCESS ) {
printf("hackrf_open() failed: %s (%d)\n", hackrf_error_name(result), result);
usage();
return EXIT_FAILURE;
}
@ -351,33 +458,24 @@ int main(int argc, char** argv) {
signal(SIGSEGV, &sigint_callback_handler);
signal(SIGTERM, &sigint_callback_handler);
signal(SIGABRT, &sigint_callback_handler);
if( sample_rate )
{
printf("call hackrf_sample_rate_set(%u Hz/%u MHz)\n", sample_rate_hz, sample_rate_hz/FREQ_ONE_MHZ);
result = hackrf_sample_rate_set(device, sample_rate_hz);
if( result != HACKRF_SUCCESS ) {
printf("hackrf_sample_rate_set() failed: %s (%d)\n", hackrf_error_name(result), result);
return EXIT_FAILURE;
}
}else
{
printf("call hackrf_sample_rate_set(%u Hz/%u MHz)\n", DEFAULT_SAMPLE_RATE_HZ, DEFAULT_SAMPLE_RATE_HZ/FREQ_ONE_MHZ);
result = hackrf_sample_rate_set(device, DEFAULT_SAMPLE_RATE_HZ);
if( result != HACKRF_SUCCESS ) {
printf("hackrf_sample_rate_set() failed: %s (%d)\n", hackrf_error_name(result), result);
return EXIT_FAILURE;
}
}
printf("call hackrf_baseband_filter_bandwidth_set(%d Hz/%d MHz)\n",
DEFAULT_BASEBAND_FILTER_BANDWIDTH, DEFAULT_BASEBAND_FILTER_BANDWIDTH/FREQ_ONE_MHZ);
result = hackrf_baseband_filter_bandwidth_set(device, DEFAULT_BASEBAND_FILTER_BANDWIDTH);
printf("call hackrf_sample_rate_set(%u Hz/%.02f MHz)\n", sample_rate_hz,((float)sample_rate_hz/(float)FREQ_ONE_MHZ));
result = hackrf_sample_rate_set(device, sample_rate_hz);
if( result != HACKRF_SUCCESS ) {
printf("hackrf_baseband_filter_bandwidth_set() failed: %s (%d)\n", hackrf_error_name(result), result);
printf("hackrf_sample_rate_set() failed: %s (%d)\n", hackrf_error_name(result), result);
usage();
return EXIT_FAILURE;
}
printf("call hackrf_baseband_filter_bandwidth_set(%d Hz/%.02f MHz)\n",
baseband_filter_bw_hz, ((float)baseband_filter_bw_hz/(float)FREQ_ONE_MHZ));
result = hackrf_baseband_filter_bandwidth_set(device, baseband_filter_bw_hz);
if( result != HACKRF_SUCCESS ) {
printf("hackrf_baseband_filter_bandwidth_set() failed: %s (%d)\n", hackrf_error_name(result), result);
usage();
return EXIT_FAILURE;
}
if( transceiver_mode == TRANSCEIVER_MODE_RX ) {
result = hackrf_start_rx(device, rx_callback);
} else {
@ -385,6 +483,7 @@ int main(int argc, char** argv) {
}
if( result != HACKRF_SUCCESS ) {
printf("hackrf_start_?x() failed: %s (%d)\n", hackrf_error_name(result), result);
usage();
return EXIT_FAILURE;
}
@ -393,6 +492,7 @@ int main(int argc, char** argv) {
result = hackrf_set_freq(device, freq_hz);
if( result != HACKRF_SUCCESS ) {
printf("hackrf_set_freq() failed: %s (%d)\n", hackrf_error_name(result), result);
usage();
return EXIT_FAILURE;
}
}
@ -402,6 +502,7 @@ int main(int argc, char** argv) {
result = hackrf_set_amp_enable(device, (uint8_t)amp_enable);
if( result != HACKRF_SUCCESS ) {
printf("hackrf_set_amp_enable() failed: %s (%d)\n", hackrf_error_name(result), result);
usage();
return EXIT_FAILURE;
}
}