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main.c
703 lines (600 loc) · 30.3 KB
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main.c
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#include <stdlib.h>
#include <stdio.h>
#include <stdint.h>
#include <signal.h>
#include <string.h>
#include <unistd.h>
#include <locale.h>
#include <errno.h>
#include <math.h>
#include <pthread.h>
#include "libbladeRF.h"
#define TXFREQ 3410000000
#define TXBW 28000000
#define TXSR 20000000
#define TXVGA1 -4
#define TXVGA2 25
#define RXFREQ 3410000000
#define RXBW 28000000
#define RXSR 40000000
#define RXVGA1 30
#define RXVGA2 30
#define LNA BLADERF_LNA_GAIN_MAX
#define TX_N_BUFFERS 32
#define TX_SAMPLES_PER_BUFFER 1024
#define TX_N_SAMPLES (130*1024)
#define TX_N_TRANSFERS 32
#define RX_SAMPLES_PER_BUFFER 2048
#define RX_N_SAMPLES (250*1024)
#define RX_N_BUFFERS (RX_N_SAMPLES / RX_SAMPLES_PER_BUFFER)
#define RX_N_TRANSFERS 32
#define KNRM "\x1B[0m"
#define KRED "\x1B[31m"
#define KGRN "\x1B[32m"
char* output_samples_filename = "./bladerf_samples.dat";
char* output_config_filename = "./bladerf_config.json";
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2047, 0, -2047, 0, 2047, 0, -2047, 0, 2047, 0, 2047, 0, 2047, 0, 2047, 0, -2047, 0, -2047, 0, 2047, 0, 2047, 0, -2047, 0, 2047, 0, 2047, 0, -2047, 0, 2047, 0, -2047, 0, 2047, 0, -2047, 0, -2047, 0, 2047, 0, 2047, 0, 2047, 0, -2047, 0, 2047, 0, 2047, 0, 2047, 0, 2047, 0, -2047, 0, -2047, 0, -2047, 0, 2047, 0, 2047, 0, -2047, 0, 2047, 0, -2047, 0, 2047, 0, -2047, 0, -2047, 0, -2047, 0, 2047, 0, -2047, 0, -2047, 0, -2047, 0, -2047, 0, 2047, 0, -2047, 0, -2047, 0, -2047, 0, 2047, 0, -2047, 0, -2047, 0, 2047, 0, -2047, 0, -2047, 0, 2047, 0, 2047, 0, 2047, 0, -2047, 0, -2047, 0, -2047, 0, -2047, 0, 2047, 0, 2047, 0, 2047, 0, -2047, 0, -2047, 0, 2047, 0, -2047, 0, 2047, 0, -2047, 0, -2047, 0, -2047, 0, 2047, 0, -2047, 0, -2047, 0, -2047, 0, -2047, 0, 0, 0 };
struct bladerf_config
{
unsigned int tx_freq; // TX Frequency, 300MHz to 3.8GHz, in Hz
unsigned int rx_freq; // RX Frequency, 300MHz to 3.8GHz, in Hz
unsigned int tx_bw; // TX Bandwidth, 1.5MHz to 28MHz, in Hz
unsigned int rx_bw; // RX Bandwidth, 1.5MHz to 28MHz, in Hz
unsigned int tx_sr; // TX Sample rate, 400kS/s to 40MS/s, in S/s
unsigned int rx_sr; // RX Sample rate, 400kS/s to 40MS/s, in S/s
int txvga1; // Post-LPF gain, default -14dB, -35dB to -4dB, 1dB steps
int txvga2; // PA gain, default 0dB, 0dB to 25dB, 1dB steps
int rxvga1; // Mixer gain, default 30dB, 5dB to 30dB
int rxvga2; // Post-LPF gain, default 3dB, 0dB to 60dB, 3dB steps
int lna; // BLADERF_LNA_GAIN_BYPASS/MID/MAX, default MAX
};
struct bladerf_stream_data
{
void **buffers;
size_t num_buffers;
size_t samples_per_buffer;
size_t num_transfers;
unsigned int next_buffer;
bladerf_module module;
int samples_left;
};
struct bladerf_thread_data
{
struct bladerf* dev;
struct bladerf_stream* stream;
struct bladerf_stream_data* stream_data;
int *waiting;
int rv;
};
int write_config(struct bladerf_config* config)
{
printf("%-20s %-29s", "Writing config to", output_config_filename);
fflush(stdout);
FILE* fout = fopen(output_config_filename, "w");
if(!fout) {
printf(KRED "Failed: %s" KNRM "\n", strerror(errno));
return 1;
}
fprintf(fout, "{\n");
fprintf(fout, " \"tx_freq\": %u,\n", config->tx_freq);
fprintf(fout, " \"rx_freq\": %u,\n", config->rx_freq);
fprintf(fout, " \"tx_bw\": %u,\n", config->tx_bw);
fprintf(fout, " \"rx_bw\": %u,\n", config->rx_bw);
fprintf(fout, " \"tx_sr\": %u,\n", config->tx_sr);
fprintf(fout, " \"rx_sr\": %u,\n", config->rx_sr);
fprintf(fout, " \"txvga1\": %d,\n", config->txvga1);
fprintf(fout, " \"txvga2\": %d,\n", config->txvga2);
fprintf(fout, " \"rxvga1\": %d,\n", config->rxvga1);
fprintf(fout, " \"rxvga2\": %d\n", config->rxvga2);
fprintf(fout, "}\n");
fclose(fout);
printf(KGRN "OK" KNRM "\n");
return 0;
}
int configure_bladerf(struct bladerf** dev, struct bladerf_config* config)
{
unsigned int abw, asr;
int status;
setlocale(LC_NUMERIC, "");
printf("%-50s", "Connecting to device... ");
fflush(stdout);
status = bladerf_open(dev, NULL);
if(status) {
printf(KRED "Failed: %s" KNRM "\n", bladerf_strerror(status));
return 1;
}
printf(KGRN "OK" KNRM "\n");
printf("%-50s", "Checking FPGA status... ");
fflush(stdout);
status = bladerf_is_fpga_configured(*dev);
if(status < 0) {
printf(KRED "Failed: %s" KNRM "\n", bladerf_strerror(status));
bladerf_close(*dev);
return 1;
} else if(status == 0) {
printf(KRED "Failed: FPGA not loaded" KNRM "\n");
bladerf_close(*dev);
return 1;
}
printf(KGRN "OK" KNRM "\n");
printf("%-30s %'13uHz... ", "Tuning TX to:", config->tx_freq);
fflush(stdout);
status = bladerf_set_frequency(*dev, BLADERF_MODULE_TX, config->tx_freq);
if(status) {
printf(KRED "Failed: %s" KNRM "\n", bladerf_strerror(status));
bladerf_close(*dev);
return 1;
}
printf(KGRN "OK" KNRM "\n");
printf("%-30s %'13uHz... ", "Tuning RX to:", config->rx_freq);
fflush(stdout);
status = bladerf_set_frequency(*dev, BLADERF_MODULE_RX, config->rx_freq);
if(status) {
printf(KRED "Failed: %s" KNRM "\n", bladerf_strerror(status));
bladerf_close(*dev);
return 1;
}
printf(KGRN "OK" KNRM "\n");
printf("%-30s %'13uHz... ", "Setting TX bandwidth to:", config->tx_bw);
fflush(stdout);
status = bladerf_set_bandwidth(*dev, BLADERF_MODULE_TX,
config->tx_bw, &abw);
if(status) {
printf(KRED "Failed: %s" KNRM "\n", bladerf_strerror(status));
bladerf_close(*dev);
return 1;
}
printf(KGRN "OK" KNRM "\n");
printf("%-30s %'13uHz\n", "Actual bandwidth:", abw);
if(abw != config->tx_bw) {
printf("Actual bandwidth not equal to desired bandwidth, quitting.\n");
return 1;
}
printf("%-30s %'13uHz... ", "Setting RX bandwidth to:", config->rx_bw);
fflush(stdout);
status = bladerf_set_bandwidth(*dev, BLADERF_MODULE_RX,
config->rx_bw, &abw);
if(status) {
printf(KRED "Failed: %s" KNRM "\n", bladerf_strerror(status));
bladerf_close(*dev);
return 1;
}
printf(KGRN "OK" KNRM "\n");
printf("%-30s %'13uHz\n", "Actual bandwidth:", abw);
if(abw != config->rx_bw) {
printf("Actual bandwidth not equal to desired bandwidth, quitting.\n");
return 1;
}
printf("%-30s %'12usps... ", "Setting TX sampling rate to:",
config->tx_sr);
fflush(stdout);
status = bladerf_set_sample_rate(*dev, BLADERF_MODULE_TX,
config->tx_sr, &asr);
if(status) {
printf(KRED "Failed: %s" KNRM "\n", bladerf_strerror(status));
bladerf_close(*dev);
return 1;
}
printf(KGRN "OK" KNRM "\n");
printf("%-30s %'12usps\n", "Actual sampling rate:", asr);
if(asr != config->tx_sr) {
printf("Actual sampling rate not equal to desired sampling rate, "
"quitting.\n");
return 1;
}
printf("%-30s %'12usps... ", "Setting RX sampling rate to:",
config->rx_sr);
fflush(stdout);
status = bladerf_set_sample_rate(*dev, BLADERF_MODULE_RX,
config->rx_sr, &asr);
if(status) {
printf(KRED "Failed: %s" KNRM "\n", bladerf_strerror(status));
bladerf_close(*dev);
return 1;
}
printf(KGRN "OK" KNRM "\n");
printf("%-30s %'12usps\n", "Actual sampling rate:", asr);
if(asr != config->rx_sr) {
printf("Actual sampling rate not equal to desired sampling rate, "
"quitting.\n");
return 1;
}
printf("%-30s %+13ddB... ", "Setting TXVGA1 gain to:", config->txvga1);
fflush(stdout);
status = bladerf_set_txvga1(*dev, config->txvga1);
if(status) {
printf(KRED "Failed: %s" KNRM "\n", bladerf_strerror(status));
bladerf_close(*dev);
return 1;
}
printf(KGRN "OK" KNRM "\n");
printf("%-30s %+13ddB... ", "Setting TXVGA2 gain to:", config->txvga2);
fflush(stdout);
status = bladerf_set_txvga2(*dev, config->txvga2);
if(status) {
printf(KRED "Failed: %s" KNRM "\n", bladerf_strerror(status));
bladerf_close(*dev);
return 1;
}
printf(KGRN "OK" KNRM "\n");
printf("%-30s %+13ddB... ", "Setting RXVGA1 gain to:", config->rxvga1);
fflush(stdout);
status = bladerf_set_rxvga1(*dev, config->rxvga1);
if(status) {
printf(KRED "Failed: %s" KNRM "\n", bladerf_strerror(status));
bladerf_close(*dev);
return 1;
}
printf(KGRN "OK" KNRM "\n");
printf("%-30s %+13ddB... ", "Setting RXVGA2 gain to:", config->rxvga2);
fflush(stdout);
status = bladerf_set_rxvga2(*dev, config->rxvga2);
if(status) {
printf(KRED "Failed: %s" KNRM "\n", bladerf_strerror(status));
bladerf_close(*dev);
return 1;
}
printf(KGRN "OK" KNRM "\n");
printf("%-30s %15d... ", "Setting LNA gain to:", config->lna);
fflush(stdout);
status = bladerf_set_lna_gain(*dev, config->lna);
if(status) {
printf(KRED "Failed: %s" KNRM "\n", bladerf_strerror(status));
bladerf_close(*dev);
return 1;
}
printf(KGRN "OK" KNRM "\n");
printf("All set up.\n");
return 0;
}
int enable(struct bladerf* dev, bool enabled)
{
int status;
if(enabled)
printf("%-50s", "Enabling TX... ");
else
printf("%-50s", "Disabling TX... ");
fflush(stdout);
status = bladerf_enable_module(dev, BLADERF_MODULE_TX, enabled);
if(status) {
printf(KRED "Failed: %s" KNRM "\n", bladerf_strerror(status));
bladerf_close(dev);
return 1;
}
printf(KGRN "OK" KNRM "\n");
if(enabled)
printf("%-50s", "Enabling RX... ");
else
printf("%-50s", "Disabling RX... ");
fflush(stdout);
status = bladerf_enable_module(dev, BLADERF_MODULE_RX, enabled);
if(status) {
printf(KRED "Failed: %s" KNRM "\n", bladerf_strerror(status));
bladerf_close(dev);
return 1;
}
printf(KGRN "OK" KNRM "\n");
return 0;
}
void* stream_cb(struct bladerf *dev, struct bladerf_stream *stream,
struct bladerf_metadata *md, void *samples, size_t n_samples,
void *user_data)
{
struct bladerf_stream_data *data = user_data;
data->samples_left -= n_samples;
if(data->samples_left <= 0) {
return NULL;
}
void *rv = data->buffers[data->next_buffer];
data->next_buffer = (data->next_buffer + 1) % data->num_buffers;
return rv;
}
int setup_rx_stream(struct bladerf* dev, struct bladerf_stream** stream,
struct bladerf_stream_data* stream_data)
{
int status;
stream_data->next_buffer = 0;
stream_data->module = BLADERF_MODULE_RX;
printf("%-50s", "Initialising RX data stream... ");
fflush(stdout);
status = bladerf_init_stream(stream, dev, stream_cb,
&stream_data->buffers,
stream_data->num_buffers,
BLADERF_FORMAT_SC16_Q12,
stream_data->samples_per_buffer,
stream_data->num_transfers, stream_data);
if(status) {
printf(KRED "Failed: %s" KNRM "\n", bladerf_strerror(status));
bladerf_close(dev);
return 1;
}
printf(KGRN "OK" KNRM "\n");
return 0;
}
void fill_tx_buffers(struct bladerf_stream_data* stream_data)
{
size_t i, j;
int16_t* samples;
for(i=0; i<stream_data->num_buffers; i++) {
samples = stream_data->buffers[i];
memcpy(samples, gc1, sizeof(*samples) * 2048);
/*
memset(samples, 0,
stream_data->samples_per_buffer * sizeof(*samples) * 2);
for(j=0; j<(stream_data->samples_per_buffer / 256); j++) {
samples[j*2*256] = 2047;
}
*/
}
}
int setup_tx_stream(struct bladerf* dev, struct bladerf_stream** stream,
struct bladerf_stream_data* stream_data)
{
int status;
stream_data->next_buffer = 0;
stream_data->module = BLADERF_MODULE_TX;
printf("%-50s", "Initialising TX data stream... ");
fflush(stdout);
status = bladerf_init_stream(stream, dev, stream_cb,
&stream_data->buffers,
stream_data->num_buffers,
BLADERF_FORMAT_SC16_Q12,
stream_data->samples_per_buffer,
stream_data->num_transfers, stream_data);
if(status) {
printf(KRED "Failed: %s" KNRM "\n", bladerf_strerror(status));
bladerf_close(dev);
return 1;
}
fill_tx_buffers(stream_data);
printf(KGRN "OK" KNRM "\n");
return 0;
}
void* txrx_thread(void* arg)
{
struct bladerf_thread_data* thread_data = (struct bladerf_thread_data*)arg;
/*
while(*(thread_data->waiting))
usleep(1);
*/
thread_data->rv = bladerf_stream(thread_data->stream,
thread_data->stream_data->module);
return NULL;
}
int save_rx_data(struct bladerf_stream_data* stream_data)
{
FILE* fout;
size_t i, j, written;
int16_t* samples;
printf("%-10s %-39s", "Opening", output_samples_filename);
fflush(stdout);
fout = fopen(output_samples_filename, "wb");
if(!fout) {
printf(KRED "Failed: %s" KNRM "\n", strerror(errno));
return 1;
}
printf(KGRN "OK" KNRM "\n");
printf("%-50s", "Writing data... ");
for(i=0; i<stream_data->num_buffers; i++) {
samples = stream_data->buffers[i];
for(j=0; j<stream_data->samples_per_buffer; j++) {
*samples &= 0x0fff;
if(*samples & 0x0800)
*samples |= 0xf000;
*(samples+1) &= 0x0fff;
if(*(samples+1) & 0x0800)
*(samples+1) |= 0xf000;
samples += 2;
}
samples = stream_data->buffers[i];
written = fwrite(samples, sizeof(*samples),
stream_data->samples_per_buffer * 2, fout);
if(written != stream_data->samples_per_buffer * 2) {
printf(KRED "Failed: %s" KNRM "\n", strerror(errno));
}
}
printf(KGRN "OK" KNRM "\n");
fclose(fout);
return 0;
}
void ignore_sigint(int sig)
{
return;
}
int main(int argc, char** argv) {
int status, threads_waiting = 1, quick;
struct bladerf* dev;
struct bladerf_config* cfg;
struct bladerf_stream* tx_stream;
struct bladerf_stream* rx_stream;
struct bladerf_stream_data* tx_stream_data;
struct bladerf_stream_data* rx_stream_data;
struct bladerf_thread_data* tx_thread_data;
struct bladerf_thread_data* rx_thread_data;
pthread_t tx_thread_pth;
pthread_t rx_thread_pth;
signal(SIGINT, ignore_sigint);
cfg = malloc(sizeof(struct bladerf_config));
tx_stream_data = malloc(sizeof(struct bladerf_stream_data));
rx_stream_data = malloc(sizeof(struct bladerf_stream_data));
tx_thread_data = malloc(sizeof(struct bladerf_thread_data));
rx_thread_data = malloc(sizeof(struct bladerf_thread_data));
cfg->tx_freq = TXFREQ;
cfg->rx_freq = RXFREQ;
cfg->tx_bw = TXBW;
cfg->rx_bw = RXBW;
cfg->tx_sr = TXSR;
cfg->rx_sr = RXSR;
cfg->txvga1 = TXVGA1;
cfg->txvga2 = TXVGA2;
cfg->rxvga1 = RXVGA1;
cfg->rxvga2 = RXVGA2;
cfg->lna = LNA;
if(argc == 2 && argv[1][0] == 'q') {
quick = 1;
} else {
quick = 0;
}
if(!quick) {
if(write_config(cfg)) {
if(cfg) free(cfg);
if(tx_stream_data) free(tx_stream_data);
if(rx_stream_data) free(rx_stream_data);
if(tx_thread_data) free(tx_thread_data);
if(rx_thread_data) free(rx_thread_data);
return 1;
}
if(configure_bladerf(&dev, cfg)) {
if(cfg) free(cfg);
if(tx_stream_data) free(tx_stream_data);
if(rx_stream_data) free(rx_stream_data);
if(tx_thread_data) free(tx_thread_data);
if(rx_thread_data) free(rx_thread_data);
return 1;
}
} else {
status = bladerf_open(&dev, NULL);
if(status) {
return 1;
}
}
tx_stream_data->num_buffers = TX_N_BUFFERS;
tx_stream_data->samples_per_buffer = TX_SAMPLES_PER_BUFFER;
tx_stream_data->samples_left = TX_N_SAMPLES;
tx_stream_data->num_transfers = TX_N_TRANSFERS;
if(setup_tx_stream(dev, &tx_stream, tx_stream_data)) {
if(cfg) free(cfg);
if(tx_stream_data) free(tx_stream_data);
if(rx_stream_data) free(rx_stream_data);
if(tx_thread_data) free(tx_thread_data);
if(rx_thread_data) free(rx_thread_data);
return 1;
}
rx_stream_data->num_buffers = RX_N_BUFFERS;
rx_stream_data->samples_per_buffer = RX_SAMPLES_PER_BUFFER;
rx_stream_data->samples_left = RX_N_SAMPLES;
rx_stream_data->num_transfers = RX_N_TRANSFERS;
if(setup_rx_stream(dev, &rx_stream, rx_stream_data)) {
bladerf_deinit_stream(tx_stream);
if(cfg) free(cfg);
if(tx_stream_data) free(tx_stream_data);
if(rx_stream_data) free(rx_stream_data);
if(tx_thread_data) free(tx_thread_data);
if(rx_thread_data) free(rx_thread_data);
return 1;
}
if(enable(dev, true)) {
enable(dev, false);
bladerf_deinit_stream(rx_stream);
bladerf_deinit_stream(tx_stream);
bladerf_close(dev);
if(cfg) free(cfg);
if(tx_stream_data) free(tx_stream_data);
if(rx_stream_data) free(rx_stream_data);
if(tx_thread_data) free(tx_thread_data);
if(rx_thread_data) free(rx_thread_data);
return 1;
}
tx_thread_data->dev = dev;
tx_thread_data->stream = tx_stream;
tx_thread_data->stream_data = tx_stream_data;
tx_thread_data->waiting = &threads_waiting;
tx_thread_data->rv = 1;
printf("%-50s", "Creating TX thread... ");
status = pthread_create(&tx_thread_pth, NULL, txrx_thread,
tx_thread_data);
if(status) {
printf(KRED "Failed: %s" KNRM "\n", strerror(status));
bladerf_deinit_stream(rx_stream);
bladerf_close(dev);
if(cfg) free(cfg);
if(tx_stream_data) free(tx_stream_data);
if(rx_stream_data) free(rx_stream_data);
if(tx_thread_data) free(tx_thread_data);
if(rx_thread_data) free(rx_thread_data);
return 1;
}
printf(KGRN "OK" KNRM "\n");
usleep(100);
rx_thread_data->dev = dev;
rx_thread_data->stream = rx_stream;
rx_thread_data->stream_data = rx_stream_data;
rx_thread_data->waiting = &threads_waiting;
rx_thread_data->rv = 1;
printf("%-50s", "Creating RX thread... ");
status = pthread_create(&rx_thread_pth, NULL, txrx_thread,
rx_thread_data);
if(status) {
printf(KRED "Failed: %s" KNRM "\n", strerror(status));
bladerf_deinit_stream(rx_stream);
bladerf_deinit_stream(tx_stream);
bladerf_close(dev);
if(cfg) free(cfg);
if(tx_stream_data) free(tx_stream_data);
if(rx_stream_data) free(rx_stream_data);
if(tx_thread_data) free(tx_thread_data);
if(rx_thread_data) free(rx_thread_data);
return 1;
}
printf(KGRN "OK" KNRM "\n");
printf("%-50s", "Starting processing... ");
threads_waiting = 0;
printf(KGRN "OK" KNRM "\n");
printf("%-50s", "Waiting for completion... ");
fflush(stdout);
pthread_join(rx_thread_pth, NULL);
pthread_join(tx_thread_pth, NULL);
printf(KGRN "OK" KNRM "\n");
printf("%-50s", "All done, checking TX results... ");
fflush(stdout);
if(tx_thread_data->rv < 0) {
printf(KRED "Failed: %s" KNRM "\n",
bladerf_strerror(tx_thread_data->rv));
enable(dev, false);
bladerf_deinit_stream(rx_stream);
bladerf_close(dev);
if(cfg) free(cfg);
if(tx_stream_data) free(tx_stream_data);
if(rx_stream_data) free(rx_stream_data);
if(tx_thread_data) free(tx_thread_data);
if(rx_thread_data) free(rx_thread_data);
return 1;
}
printf(KGRN "OK" KNRM "\n");
printf("%-50s", " checking RX results... ");
fflush(stdout);
if(rx_thread_data->rv < 0) {
printf(KRED "Failed: %s" KNRM "\n",
bladerf_strerror(tx_thread_data->rv));
enable(dev, false);
bladerf_deinit_stream(rx_stream);
bladerf_close(dev);
if(cfg) free(cfg);
if(tx_stream_data) free(tx_stream_data);
if(rx_stream_data) free(rx_stream_data);
if(tx_thread_data) free(tx_thread_data);
if(rx_thread_data) free(rx_thread_data);
return 1;
}
printf(KGRN "OK" KNRM "\n");
printf(KGRN "Success!" KNRM "\n");
save_rx_data(rx_stream_data);
enable(dev, false);
printf("%-50s", "Deinitialising stream... ");
fflush(stdout);
bladerf_deinit_stream(rx_stream);
printf(KGRN "OK" KNRM "\n");
printf("%-50s", "Closing device... ");
fflush(stdout);
bladerf_close(dev);
printf(KGRN "OK" KNRM "\n");
printf("%-50s", "Freeing memory... ");
fflush(stdout);
if(cfg) free(cfg);
if(tx_stream_data) free(tx_stream_data);
if(rx_stream_data) free(rx_stream_data);
if(tx_thread_data) free(tx_thread_data);
if(rx_thread_data) free(rx_thread_data);
printf(KGRN "OK" KNRM "\n");
return 0;
}