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Added "Sensitivity" and "Linearity" gain modes in airspy_rx.
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@bvernoux
bvernoux committed Dec 3, 2015
1 parent da98b34 commit dc5cbca
Showing 1 changed file with 94 additions and 19 deletions.
113 changes: 94 additions & 19 deletions airspy-tools/src/airspy_rx.c
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Original file line number Diff line number Diff line change
Expand Up @@ -34,7 +34,7 @@
#include <errno.h>
#include <limits.h>

#define AIRSPY_RX_VERSION "1.0.2 13 Jul 2015"
#define AIRSPY_RX_VERSION "1.0.3 3 Dec 2015"

#ifndef bool
typedef int bool;
Expand Down Expand Up @@ -114,6 +114,8 @@ int gettimeofday(struct timeval *tv, void* ignored)
#define VGA_GAIN_MAX (15)
#define MIXER_GAIN_MAX (15)
#define LNA_GAIN_MAX (14)
#define LINEARITY_GAIN_MAX (21)
#define SENSITIVITY_GAIN_MAX (21)
#define SAMPLES_TO_XFER_MAX_U64 (0x8000000000000000ull) /* Max value */

/* WAVE or RIFF WAVE file format containing data for AirSpy compatible with SDR# Wav IQ file */
Expand Down Expand Up @@ -186,9 +188,15 @@ typedef struct

receiver_mode_t receiver_mode = RECEIVER_MODE_RX;

unsigned int vga_gain = DEFAULT_VGA_IF_GAIN;
unsigned int lna_gain = DEFAULT_LNA_GAIN;
unsigned int mixer_gain = DEFAULT_MIXER_GAIN;
uint32_t vga_gain = DEFAULT_VGA_IF_GAIN;
uint32_t lna_gain = DEFAULT_LNA_GAIN;
uint32_t mixer_gain = DEFAULT_MIXER_GAIN;

uint32_t linearity_gain_val;
bool linearity_gain = false;

uint32_t sensitivity_gain_val;
bool sensitivity_gain = false;

/* WAV default values */
uint16_t wav_format_tag=1; /* PCM8 or PCM16 */
Expand Down Expand Up @@ -460,6 +468,8 @@ static void usage(void)
printf("[-v vga_gain]: Set VGA/IF gain, 0-%d (default %d)\n", VGA_GAIN_MAX, vga_gain);
printf("[-m mixer_gain]: Set Mixer gain, 0-%d (default %d)\n", MIXER_GAIN_MAX, mixer_gain);
printf("[-l lna_gain]: Set LNA gain, 0-%d (default %d)\n", LNA_GAIN_MAX, lna_gain);
printf("[-g linearity_gain]: Set linearity simplified gain, 0-%d\n", LINEARITY_GAIN_MAX);
printf("[-h sensivity_gain]: Set sensitivity simplified gain, 0-%d\n", SENSITIVITY_GAIN_MAX);
printf("[-n num_samples]: Number of samples to transfer (default is unlimited)\n");
printf("[-d]: Verbose mode\n");
}
Expand Down Expand Up @@ -512,7 +522,7 @@ int main(int argc, char** argv)
double freq_hz_temp;
char str[20];

while( (opt = getopt(argc, argv, "r:ws:p:f:a:t:b:v:m:l:n:d")) != EOF )
while( (opt = getopt(argc, argv, "r:ws:p:f:a:t:b:v:m:l:g:h:n:d")) != EOF )
{
result = AIRSPY_SUCCESS;
switch( opt )
Expand Down Expand Up @@ -631,6 +641,16 @@ int main(int argc, char** argv)
result = parse_u32(optarg, &lna_gain);
break;

case 'g':
linearity_gain = true;
result = parse_u32(optarg, &linearity_gain_val);
break;

case 'h':
sensitivity_gain = true;
result = parse_u32(optarg, &sensitivity_gain_val);
break;

case 'n':
limit_num_samples = true;
result = parse_u64(optarg, &samples_to_xfer);
Expand Down Expand Up @@ -737,6 +757,25 @@ int main(int argc, char** argv)
return EXIT_FAILURE;
}

if(linearity_gain_val > LINEARITY_GAIN_MAX) {
printf("argument error: linearity_gain out of range\n");
usage();
return EXIT_FAILURE;
}

if(sensitivity_gain_val > SENSITIVITY_GAIN_MAX) {
printf("argument error: sensitivity_gain out of range\n");
usage();
return EXIT_FAILURE;
}

if( (linearity_gain == true) && (sensitivity_gain == true) )
{
printf("argument error: linearity_gain and sensitivity_gain are both set (choose only one option)\n");
usage();
return EXIT_FAILURE;
}

if(verbose == true)
{
uint32_t serial_number_msb_val;
Expand All @@ -751,9 +790,25 @@ int main(int argc, char** argv)
printf("frequency_MHz -f %.6fMHz (%sHz)\n",((double)freq_hz/(double)FREQ_ONE_MHZ), u64toa(freq_hz, &ascii_u64_data1) );
printf("sample_type -t %d\n", sample_type_val);
printf("biast -b %d\n", biast_val);
printf("vga_gain -v %u\n", vga_gain);
printf("mixer_gain -m %u\n", mixer_gain);
printf("lna_gain -l %u\n", lna_gain);

if( (linearity_gain == false) && (sensitivity_gain == false) )
{
printf("vga_gain -v %u\n", vga_gain);
printf("mixer_gain -m %u\n", mixer_gain);
printf("lna_gain -l %u\n", lna_gain);
} else
{
if( linearity_gain == true)
{
printf("linearity_gain -g %u\n", linearity_gain_val);
}

if( sensitivity_gain == true)
{
printf("sensitivity_gain -h %u\n", sensitivity_gain_val);
}
}

if( limit_num_samples ) {
printf("num_samples -n %s (%sM)\n",
u64toa(samples_to_xfer, &ascii_u64_data1),
Expand Down Expand Up @@ -890,19 +945,39 @@ int main(int argc, char** argv)
signal(SIGABRT, &sigint_callback_handler);
#endif

result = airspy_set_vga_gain(device, vga_gain);
if( result != AIRSPY_SUCCESS ) {
printf("airspy_set_vga_gain() failed: %s (%d)\n", airspy_error_name(result), result);
}
if( (linearity_gain == false) && (sensitivity_gain == false) )
{
result = airspy_set_vga_gain(device, vga_gain);
if( result != AIRSPY_SUCCESS ) {
printf("airspy_set_vga_gain() failed: %s (%d)\n", airspy_error_name(result), result);
}

result = airspy_set_mixer_gain(device, mixer_gain);
if( result != AIRSPY_SUCCESS ) {
printf("airspy_set_mixer_gain() failed: %s (%d)\n", airspy_error_name(result), result);
}
result = airspy_set_mixer_gain(device, mixer_gain);
if( result != AIRSPY_SUCCESS ) {
printf("airspy_set_mixer_gain() failed: %s (%d)\n", airspy_error_name(result), result);
}

result = airspy_set_lna_gain(device, lna_gain);
if( result != AIRSPY_SUCCESS ) {
printf("airspy_set_lna_gain() failed: %s (%d)\n", airspy_error_name(result), result);
result = airspy_set_lna_gain(device, lna_gain);
if( result != AIRSPY_SUCCESS ) {
printf("airspy_set_lna_gain() failed: %s (%d)\n", airspy_error_name(result), result);
}
} else
{
if( linearity_gain == true )
{
result = airspy_set_linearity_gain(device, linearity_gain_val);
if( result != AIRSPY_SUCCESS ) {
printf("airspy_set_linearity_gain() failed: %s (%d)\n", airspy_error_name(result), result);
}
}

if( sensitivity_gain == true )
{
result = airspy_set_sensitivity_gain(device, sensitivity_gain_val);
if( result != AIRSPY_SUCCESS ) {
printf("airspy_set_sensitivity_gain() failed: %s (%d)\n", airspy_error_name(result), result);
}
}
}

result = airspy_start_rx(device, rx_callback, NULL);
Expand Down

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