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sdrplay.c
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// Read from SDRplay SDR using SDRplay API version 3.x
// Accept control commands from UDP socket
// Written by K4VZ August 2023, adapted from existing KA9Q SDR handler programs
// Updated Jan 2025 by KA9Q
// Known problems:
// Automatic tuning by ka9q-radio is unreliable. Often needs manual jiggling if not set to needed frequency in config file at startup
// Input levels are uncalibrated
// The opaque sdrplay "server" needed to support this thing burns as much time as ka9q-radio!
#define _GNU_SOURCE 1
#include <assert.h>
#include <pthread.h>
#include <sdrplay_api.h>
#include <errno.h>
#include <unistd.h>
#include <iniparser/iniparser.h>
#if defined(linux)
#include <bsd/string.h>
#endif
#include "conf.h"
#include "misc.h"
#include "multicast.h"
#include "status.h"
#include "radio.h"
#include "config.h"
// Global variables set by config file options
extern int Verbose;
static float Power_smooth = 0.05; // Calculate this properly someday
// SDRplay device status
enum sdrplay_status {
NOT_INITIALIZED = 0,
SDRPLAY_API_OPEN = 1,
DEVICE_API_LOCKED = 2,
DEVICE_SELECTED = 4,
DEVICE_STREAMING = 8
};
// Anything generic should be in 'struct frontend' section 'sdr' in radio.h
struct sdrstate {
struct frontend *frontend; // Avoid references to external globals
sdrplay_api_DeviceT device;
sdrplay_api_DeviceParamsT *device_params;
sdrplay_api_RxChannelParamsT *rx_channel_params;
float scale;
enum sdrplay_status device_status;
// Statistics and other auxiliary data
uint64_t events;
unsigned int next_sample_num;
pthread_t cmd_thread;
pthread_t monitor_thread;
};
// SDRplay specific constants, data structures, and functions
static const sdrplay_api_DbgLvl_t dbgLvl = sdrplay_api_DbgLvl_Disable;
//static const sdrplay_api_DbgLvl_t dbgLvl = sdrplay_api_DbgLvl_Verbose;
static const double MIN_SAMPLE_RATE = 2e6;
static const double MAX_SAMPLE_RATE = 10.66e6;
static const int MAX_DECIMATION = 32;
// Taken from SDRplay API Specification Guide (Gain Reduction Tables)
uint8_t const rsp1_0_420_lna_states[] = { 0, 24, 19, 43 };
uint8_t const rsp1_420_1000_lna_states[] = { 0, 7, 19, 26 };
uint8_t const rsp1_1000_2000_lna_states[] = { 0, 5, 19, 24 };
uint8_t const rsp1a_0_60_lna_states[] = { 0, 6, 12, 18, 37, 42, 61 };
uint8_t const rsp1a_60_420_lna_states[] = { 0, 6, 12, 18, 20, 26, 32, 38, 57, 62 };
uint8_t const rsp1a_420_1000_lna_states[] = { 0, 7, 13, 19, 20, 27, 33, 39, 45, 64 };
uint8_t const rsp1a_1000_2000_lna_states[] = { 0, 6, 12, 20, 26, 32, 38, 43, 62 };
uint8_t const rsp1b_0_50_lna_states[] = { 0, 6, 12, 18, 37, 42, 61 };
uint8_t const rsp1b_50_60_lna_states[] = { 0, 6, 12, 18, 20, 26, 32, 38, 57, 62 };
uint8_t const rsp1b_60_420_lna_states[] = { 0, 6, 12, 18, 20, 26, 32, 38, 57, 62 };
uint8_t const rsp1b_420_1000_lna_states[] = { 0, 7, 13, 19, 20, 27, 33, 39, 45, 64 };
uint8_t const rsp1b_1000_2000_lna_states[] = { 0, 6, 12, 20, 26, 32, 38, 43, 62 };
uint8_t const rsp2_0_420_lna_states[] = { 0, 10, 15, 21, 24, 34, 39, 45, 64 };
uint8_t const rsp2_420_1000_lna_states[] = { 0, 7, 10, 17, 22, 41 };
uint8_t const rsp2_1000_2000_lna_states[] = { 0, 5, 21, 15, 15, 34 };
uint8_t const rsp2_0_60_hiz_lna_states[] = { 0, 6, 12, 18, 37 };
uint8_t const rspduo_0_60_lna_states[] = { 0, 6, 12, 18, 37, 42, 61 };
uint8_t const rspduo_60_420_lna_states[] = { 0, 6, 12, 18, 20, 26, 32, 38, 57, 62 };
uint8_t const rspduo_420_1000_lna_states[] = { 0, 7, 13, 19, 20, 27, 33, 39, 45, 64 };
uint8_t const rspduo_1000_2000_lna_states[] = { 0, 6, 12, 20, 26, 32, 38, 43, 62 };
uint8_t const rspduo_0_60_hiz_lna_states[] = { 0, 6, 12, 18, 37 };
uint8_t const rspdx_0_2_hdr_lna_states[] = { 0, 3, 6, 9, 12, 15, 18, 21, 24, 25, 27, 30, 33, 36, 39, 42, 45, 48, 51, 54, 57, 60 };
uint8_t const rspdx_0_12_lna_states[] = { 0, 3, 6, 9, 12, 15, 24, 27, 30, 33, 36, 39, 42, 45, 48, 51, 54, 57, 60 };
uint8_t const rspdx_12_50_lna_states[] = { 0, 3, 6, 9, 12, 15, 18, 24, 27, 30, 33, 36, 39, 42, 45, 48, 51, 54, 57, 60 };
uint8_t const rspdx_50_60_lna_states[] = { 0, 3, 6, 9, 12, 20, 23, 26, 29, 32, 35, 38, 44, 47, 50, 53, 56, 59, 62, 65, 68, 71, 74, 77, 80 };
uint8_t const rspdx_60_250_lna_states[] = { 0, 3, 6, 9, 12, 15, 24, 27, 30, 33, 36, 39, 42, 45, 48, 51, 54, 57, 60, 63, 66, 69, 72, 75, 78, 81, 84 };
uint8_t const rspdx_250_420_lna_states[] = { 0, 3, 6, 9, 12, 15, 18, 24, 27, 30, 33, 36, 39, 42, 45, 48, 51, 54, 57, 60, 63, 66, 69, 72, 75, 78, 81, 84 };
uint8_t const rspdx_420_1000_lna_states[] = { 0, 7, 10, 13, 16, 19, 22, 25, 31, 34, 37, 40, 43, 46, 49, 52, 55, 58, 61, 64, 67 };
uint8_t const rspdx_1000_2000_lna_states[] = { 0, 5, 8, 11, 14, 17, 20, 32, 35, 38, 41, 44, 47, 50, 53, 56, 59, 62, 65 };
uint8_t const rspdxr2_0_2_hdr_lna_states[] = { 0, 3, 6, 9, 12, 15, 18, 21, 24, 25, 27, 30, 33, 36, 39, 42, 45, 48, 51, 54, 57, 60 };
uint8_t const rspdxr2_0_12_lna_states[] = { 0, 3, 6, 9, 12, 15, 24, 27, 30, 33, 36, 39, 42, 45, 48, 51, 54, 57, 60 };
uint8_t const rspdxr2_12_50_lna_states[] = { 0, 3, 6, 9, 12, 15, 18, 24, 27, 30, 33, 36, 39, 42, 45, 48, 51, 54, 57, 60 };
uint8_t const rspdxr2_50_60_lna_states[] = { 0, 3, 6, 9, 12, 20, 23, 26, 29, 32, 35, 38, 44, 47, 50, 53, 56, 59, 62, 65, 68, 71, 74, 77, 80 };
uint8_t const rspdxr2_60_250_lna_states[] = { 0, 3, 6, 9, 12, 15, 24, 27, 30, 33, 36, 39, 42, 45, 48, 51, 54, 57, 60, 63, 66, 69, 72, 75, 78, 81, 84 };
uint8_t const rspdxr2_250_420_lna_states[] = { 0, 3, 6, 9, 12, 15, 18, 24, 27, 30, 33, 36, 39, 42, 45, 48, 51, 54, 57, 60, 63, 66, 69, 72, 75, 78, 81, 84 };
uint8_t const rspdxr2_420_1000_lna_states[] = { 0, 7, 10, 13, 16, 19, 22, 25, 31, 34, 37, 40, 43, 46, 49, 52, 55, 58, 61, 64, 67 };
uint8_t const rspdxr2_1000_2000_lna_states[] = { 0, 5, 8, 11, 14, 17, 20, 32, 35, 38, 41, 44, 47, 50, 53, 56, 59, 62, 65 };
// SDRplay specific functions
static int open_sdrplay(struct sdrstate *sdr);
static int close_sdrplay(struct sdrstate *sdr);
static int find_rsp(struct sdrstate *sdr,char const *sn);
static int set_rspduo_mode(struct sdrstate *sdr,char const *mode,char const *antenna);
static int select_device(struct sdrstate *sdr);
static double set_center_freq(struct sdrstate *sdr,double const frequency);
static int set_ifreq(struct sdrstate *sdr,int const ifreq);
static int set_bandwidth(struct sdrstate *sdr,int const bandwidth,double const samprate);
static int set_samplerate(struct sdrstate *sdr,double const samprate);
static double get_samplerate(struct sdrstate *sdr);
static int set_antenna(struct sdrstate *sdr,char const *antenna);
static uint8_t const * get_lna_states(struct sdrstate *sdr,double const frequency,int *lna_state_count);
static int set_rf_gain(struct sdrstate *sdr,int const lna_state,int const rf_att,int const rf_gr,double const frequency);
static float get_rf_atten(struct sdrstate *sdr,double const frequency);
static int set_if_gain(struct sdrstate *sdr,int const if_att,int const if_gr,int const if_agc,int const if_agc_rate,int const if_agc_setPoint_dBfs,int const if_agc_attack_ms,int const if_agc_decay_ms,int const if_agc_decay_delay_ms,int const if_agc_decay_threshold_dB);
static int set_dc_offset_iq_imbalance_correction(struct sdrstate *sdr,int const dc_offset_corr,int const iq_imbalance_corr);
static int set_bulk_transfer_mode(struct sdrstate *sdr,int const transfer_mode_bulk);
static int set_notch_filters(struct sdrstate *sdr,bool const rf_notch,bool const dab_notch,bool const am_notch);
static void *sdrplay_monitor(void *p);
static int set_biasT(struct sdrstate *sdr,bool const biasT);
static int start_rx(struct sdrstate *sdr,sdrplay_api_StreamCallback_t rx_callback,sdrplay_api_EventCallback_t event_callback);
static void rx_callback(int16_t *xi,int16_t *xq,sdrplay_api_StreamCbParamsT *params,unsigned int numSamples,unsigned int reset,void *cbContext);
static void event_callback(sdrplay_api_EventT eventId,sdrplay_api_TunerSelectT tuner,sdrplay_api_EventParamsT *params,void *cbContext);
static void show_device_params(struct sdrstate *sdr);
static char const *Sdrplay_keys[] = {
"device",
"library",
"serial",
"frequency",
"rspduo-mode",
"antenna",
"bandwidth",
"samprate",
"calibrate",
"lna-state",
"rf-att",
"rf-gr",
"if-att",
"if-gr",
"if-att",
"if-agc",
"if-agc-rate",
"if-agc-setpoint-dbfs",
"if-agc-attack-ms",
"if-agc-decay-ms",
"if-agc-decay-delay-ms",
"if-agc-decay-threshold-db",
"dc-offset-corr",
"iq-imbalance-corr",
"bulk-transfer-mode",
"rf-notch",
"dab-notch",
"am-notch",
"bias-t",
"description",
NULL
};
int sdrplay_setup(struct frontend * const frontend,dictionary * const Dictionary,char const * const section){
assert(Dictionary != NULL);
struct sdrstate * const sdr = calloc(1,sizeof(struct sdrstate));
// Cross-link generic and hardware-specific control structures
assert(sdr != NULL);
sdr->frontend = frontend;
frontend->context = sdr;
{
char const *device = config_getstring(Dictionary,section,"device",section);
if(strcasecmp(device,"sdrplay") != 0)
return -1; // Not for us
}
{
if((open_sdrplay(sdr)) != 0){
fprintf(stdout,"open_sdrplay() failed\n");
close_sdrplay(sdr);
return -1;
}
}
config_validate_section(stdout,Dictionary,section,Sdrplay_keys,NULL);
{
char const * const sn = config_getstring(Dictionary,section,"serial",NULL);
if(find_rsp(sdr,sn) == -1){
close_sdrplay(sdr);
return -1;
}
}
if(sdr->device.hwVer == SDRPLAY_RSPduo_ID){
char const * const mode = config_getstring(Dictionary,section,"rspduo-mode",NULL);
char const * const antenna = config_getstring(Dictionary,section,"antenna",NULL);
if(set_rspduo_mode(sdr,mode,antenna) == -1){
close_sdrplay(sdr);
return -1;
}
}
if(select_device(sdr) == -1){
close_sdrplay(sdr);
return -1;
}
fprintf(stdout,"This SDRplay driver has known problems with tuner control\n");
fprintf(stdout,"SDRplay RSP serial %s, hw model %d, API version %.2f\n",
sdr->device.SerNo,
sdr->device.hwVer,
SDRPLAY_API_VERSION);
// Initialize hardware first
int const ifreq = config_getint(Dictionary,section,"ifreq",-1);
if(set_ifreq(sdr,ifreq) == -1){
close_sdrplay(sdr);
return -1;
}
// Default sample rate to 2Msps
int const bandwidth = config_getint(Dictionary,section,"bandwidth",-1);
double const samprate = config_getdouble(Dictionary,section,"samprate",MIN_SAMPLE_RATE);
if(set_bandwidth(sdr,bandwidth,samprate) == -1){
close_sdrplay(sdr);
return -1;
}
fprintf(stdout,"Set sample rate %'f Hz\n",samprate);
if(set_samplerate(sdr,samprate) == -1){
close_sdrplay(sdr);
return -1;
}
frontend->samprate = get_samplerate(sdr);
frontend->isreal = false;
frontend->bitspersample = 16;
frontend->calibrate = config_getdouble(Dictionary,section,"calibrate",0);
frontend->min_IF = -0.46 * frontend->samprate;
frontend->max_IF = +0.46 * frontend->samprate;
// Need to know the initial frequency beforehand because of RF att/LNA state
double init_frequency = 0;
{
char const *p = config_getstring(Dictionary,section,"frequency",NULL);
if(p != NULL)
init_frequency = parse_frequency(p,false);
}
// Hardware device settings
{
char const *antenna = config_getstring(Dictionary,section,"antenna",NULL);
if(set_antenna(sdr,antenna) == -1){
close_sdrplay(sdr);
return -1;
}
int const lna_state = config_getint(Dictionary,section,"lna-state",-1);
int const rf_att = config_getint(Dictionary,section,"rf-att",-1);
int const rf_gr = config_getint(Dictionary,section,"rf-gr",-1);
// if no init frequency, use a default frequency of 200MHz to set RF gains
double const rfgr_frequency = init_frequency > 0 ? init_frequency : 200e6;
if(set_rf_gain(sdr,lna_state,rf_att,rf_gr,rfgr_frequency) == -1){
close_sdrplay(sdr);
return -1;
}
frontend->rf_atten = get_rf_atten(sdr,rfgr_frequency);
int const if_att = config_getint(Dictionary,section,"if-att",-1);
int const if_gr = config_getint(Dictionary,section,"if-gr",-1);
bool const if_agc = config_getboolean(Dictionary,section,"if-agc",false); // default off
int const if_agc_rate = config_getint(Dictionary,section,"if-agc-rate",-1);
int const if_agc_setPoint_dBfs = config_getint(Dictionary,section,"if-agc-setpoint-dbfs",-60);
int const if_agc_attack_ms = config_getint(Dictionary,section,"if-agc-attack-ms",0);
int const if_agc_decay_ms = config_getint(Dictionary,section,"if-agc-decay-ms",0);
int const if_agc_decay_delay_ms = config_getint(Dictionary,section,"if-agc-decay-delay-ms",0);
int const if_agc_decay_threshold_dB = config_getint(Dictionary,section,"if-agc-decay-threshold-db",0);
if(set_if_gain(sdr,if_att,if_gr,if_agc,if_agc_rate,if_agc_setPoint_dBfs,if_agc_attack_ms,if_agc_decay_ms,if_agc_decay_delay_ms,if_agc_decay_threshold_dB) == -1){
close_sdrplay(sdr);
return -1;
}
bool const dc_offset_corr = config_getboolean(Dictionary,section,"dc-offset-corr",true); // default on
bool const iq_imbalance_corr = config_getboolean(Dictionary,section,"iq-imbalance-corr",true); // default on
if(set_dc_offset_iq_imbalance_correction(sdr,dc_offset_corr,iq_imbalance_corr) == -1) {
close_sdrplay(sdr);
return -1;
}
bool const transfer_mode_bulk = config_getboolean(Dictionary,section,"bulk-transfer-mode",false); // default isochronous
if(set_bulk_transfer_mode(sdr,transfer_mode_bulk) == -1){
close_sdrplay(sdr);
return -1;
}
bool const rf_notch = config_getboolean(Dictionary,section,"rf-notch",false);
bool const dab_notch = config_getboolean(Dictionary,section,"dab-notch",false);
bool const am_notch = config_getboolean(Dictionary,section,"am-notch",false);
if(set_notch_filters(sdr,rf_notch,dab_notch,am_notch) == -1){
close_sdrplay(sdr);
return -1;
}
bool const biasT = config_getboolean(Dictionary,section,"bias-t",false);
if(set_biasT(sdr,biasT) == -1){
close_sdrplay(sdr);
return -1;
}
}
{
char const * const p = config_getstring(Dictionary,section,"description","SDRplay RSP");
if(p != NULL)
strlcpy(frontend->description,p,sizeof(frontend->description));
}
fprintf(stdout,"RF LNA state %d, IF att %d, IF AGC %d, IF AGC setPoint %d, DC offset corr %d, IQ imbalance corr %d\n",
(int)(sdr->rx_channel_params->tunerParams.gain.LNAstate),
sdr->rx_channel_params->tunerParams.gain.gRdB,
sdr->rx_channel_params->ctrlParams.agc.enable,
sdr->rx_channel_params->ctrlParams.agc.setPoint_dBfs,
sdr->rx_channel_params->ctrlParams.dcOffset.DCenable,
sdr->rx_channel_params->ctrlParams.dcOffset.IQenable);
if(init_frequency != 0){
set_center_freq(sdr,init_frequency);
frontend->lock = true;
fprintf(stdout,"Locked tuner frequency %'.3lf Hz\n",init_frequency);
}
return 0;
}
int sdrplay_startup(struct frontend * const frontend){
struct sdrstate * const sdr = (struct sdrstate *)frontend->context;
pthread_create(&sdr->monitor_thread,NULL,sdrplay_monitor,sdr);
return 0;
}
static void *sdrplay_monitor(void *p){
struct sdrstate * const sdr = (struct sdrstate *)p;
assert(sdr != NULL);
struct frontend * const frontend = sdr->frontend;
assert(frontend != NULL);
pthread_setname("sdrplay-mon");
realtime();
int ret __attribute__ ((unused));
ret = start_rx(sdr,rx_callback,event_callback);
assert(ret == 0);
fprintf(stdout,"SDRplay RSP running\n");
// Periodically poll status to ensure device hasn't reset
uint64_t prev_samples = 0;
while(true){
sleep(1);
uint64_t curr_samples = frontend->samples;
if(!(curr_samples > prev_samples))
break; // Device seems to have bombed. Exit and let systemd restart us
prev_samples = curr_samples;
}
fprintf(stdout,"Device is no longer streaming, exiting\n");
close_sdrplay(sdr);
exit(1); // Let systemd restart us
}
double sdrplay_tune(struct frontend * const frontend,double const f){
if(frontend->lock)
return frontend->frequency;
struct sdrstate * const sdr = frontend->context;
return set_center_freq(sdr,f);
}
// SDRplay specific functions
static int open_sdrplay(struct sdrstate *sdr){
sdrplay_api_ErrT err;
err = sdrplay_api_Open();
if(err != sdrplay_api_Success){
fprintf(stdout,"sdrplay_api_Open() failed: %s\n",sdrplay_api_GetErrorString(err));
return -1;
}
sdr->device_status |= SDRPLAY_API_OPEN;
float ver;
err = sdrplay_api_ApiVersion(&ver);
if(err != sdrplay_api_Success){
fprintf(stdout,"sdrplay_api_ApiVersion() failed: %s\n",sdrplay_api_GetErrorString(err));
return -1;
}
if(ver != SDRPLAY_API_VERSION){
fprintf(stdout,"SDRplay API version mismatch: found %.2f, expecting %.2f\n",ver,SDRPLAY_API_VERSION);
return -1;
}
err = sdrplay_api_DebugEnable(NULL,dbgLvl);
if(err != sdrplay_api_Success){
fprintf(stdout,"sdrplay_api_DebugEnable() failed: %s\n",sdrplay_api_GetErrorString(err));
return -1;
}
return 0;
}
static int close_sdrplay(struct sdrstate *sdr){
struct frontend * const frontend = sdr->frontend;
assert(frontend != NULL);
int ret = 0;
if(sdr->device_status & DEVICE_STREAMING){
sdrplay_api_ErrT err = sdrplay_api_Uninit(sdr->device.dev);
if(err != sdrplay_api_Success){
fprintf(stdout,"sdrplay_api_Uninit() failed: %s\n",sdrplay_api_GetErrorString(err));
ret = -1;
}
sdr->device_status &= ~DEVICE_STREAMING;
fprintf(stdout,"sdrplay done streaming - samples=%llu - events=%llu\n",
(long long unsigned)frontend->samples,(long long unsigned)sdr->events);
}
if(sdr->device_status & DEVICE_SELECTED){
sdrplay_api_LockDeviceApi();
sdrplay_api_ErrT err = sdrplay_api_ReleaseDevice(&sdr->device);
if(err != sdrplay_api_Success){
fprintf(stdout,"sdrplay_api_ReleaseDevice() failed: %s\n",sdrplay_api_GetErrorString(err));
ret = -1;
}
sdrplay_api_UnlockDeviceApi();
sdr->device_status &= ~DEVICE_SELECTED;
}
if(sdr->device_status & DEVICE_API_LOCKED){
sdrplay_api_ErrT err = sdrplay_api_UnlockDeviceApi();
if(err != sdrplay_api_Success){
fprintf(stdout,"sdrplay_api_UnlockDeviceApi() failed: %s\n",sdrplay_api_GetErrorString(err));
ret = -1;
}
sdr->device_status &= ~DEVICE_API_LOCKED;
}
if(sdr->device_status & SDRPLAY_API_OPEN){
sdrplay_api_ErrT err = sdrplay_api_Close();
if(err != sdrplay_api_Success){
fprintf(stdout,"sdrplay_api_Close() failed: %s\n",sdrplay_api_GetErrorString(err));
ret = -1;
}
sdr->device_status &= ~SDRPLAY_API_OPEN;
}
return ret;
}
static int find_rsp(struct sdrstate *sdr,char const *sn){
sdrplay_api_ErrT err;
err = sdrplay_api_LockDeviceApi();
if(err != sdrplay_api_Success){
fprintf(stdout,"sdrplay_api_LockDeviceApi() failed: %s\n",sdrplay_api_GetErrorString(err));
return -1;
}
sdr->device_status |= DEVICE_API_LOCKED;
unsigned int ndevices = SDRPLAY_MAX_DEVICES;
sdrplay_api_DeviceT devices[SDRPLAY_MAX_DEVICES];
err = sdrplay_api_GetDevices(devices,&ndevices,ndevices);
if(err != sdrplay_api_Success){
fprintf(stdout,"sdrplay_api_GetDevices() failed: %s\n",sdrplay_api_GetErrorString(err));
return -1;
}
if(ndevices == 0){
fprintf(stdout,"No SDRplay RSP devices found\n");
return -1;
}
if(sn == NULL){
fprintf(stdout,"Discovered SDRplay RSP device serial%s:",ndevices > 1 ? "s" : "");
int firstvalid = -1;
for(unsigned int i = 0; i < ndevices; i++){
if(devices[i].valid){
fprintf(stdout," %s",devices[i].SerNo);
if(firstvalid == -1)
firstvalid = i;
}
}
fprintf(stdout,"\n");
fprintf(stdout,"Selecting %s; to select another, add 'serial = ' to config file\n",devices[firstvalid].SerNo);
}
int found = 0;
for(unsigned int i = 0; i < ndevices; i++){
if(devices[i].valid){
if(sn == NULL || strcmp(devices[i].SerNo,sn) == 0){
sdr->device = devices[i];
found = 1;
break;
}
}
}
if(!found){
fprintf(stdout,"sdrplay device %s not found or unavailable\n",sn);
return -1;
}
return 0;
}
static int set_rspduo_mode(struct sdrstate *sdr,char const *mode,char const *antenna){
// RSPduo mode
int valid_mode = 1;
if(mode == NULL){
if(sdr->device.rspDuoMode & sdrplay_api_RspDuoMode_Single_Tuner)
sdr->device.rspDuoMode = sdrplay_api_RspDuoMode_Single_Tuner;
} else if(strcmp(mode,"single-tuner") == 0 || strcmp(mode,"Single Tuner") == 0){
if(sdr->device.rspDuoMode & sdrplay_api_RspDuoMode_Single_Tuner)
sdr->device.rspDuoMode = sdrplay_api_RspDuoMode_Single_Tuner;
else
valid_mode = 0;
} else if(strcmp(mode,"dual-tuner") == 0 || strcmp(mode,"Dual Tuner") == 0){
if(sdr->device.rspDuoMode & sdrplay_api_RspDuoMode_Dual_Tuner){
sdr->device.rspDuoMode = sdrplay_api_RspDuoMode_Dual_Tuner;
sdr->device.rspDuoSampleFreq = 6e6;
} else
valid_mode = 0;
} else if(strcmp(mode,"master") == 0 || strcmp(mode,"Master") == 0){
if(sdr->device.rspDuoMode & sdrplay_api_RspDuoMode_Master){
sdr->device.rspDuoMode = sdrplay_api_RspDuoMode_Master;
sdr->device.rspDuoSampleFreq = 6e6;
} else
valid_mode = 0;
} else if(strcmp(mode,"master-8msps") == 0 || strcmp(mode,"Master (SR=8MHz)") == 0){
if(sdr->device.rspDuoMode & sdrplay_api_RspDuoMode_Master){
sdr->device.rspDuoMode = sdrplay_api_RspDuoMode_Master;
sdr->device.rspDuoSampleFreq = 8e6;
} else
valid_mode = 0;
} else if(strcmp(mode,"slave") == 0 || strcmp(mode,"Slave") == 0){
if(!(sdr->device.rspDuoMode == sdrplay_api_RspDuoMode_Slave))
valid_mode = 0;
} else
valid_mode = 0;
if(!valid_mode){
fprintf(stdout,"sdrplay - RSPduo mode %s is invalid or not available\n",mode);
return -1;
}
// RSPduo tuner
int valid_tuner = 1;
if(antenna == NULL){
if(sdr->device.rspDuoMode == sdrplay_api_RspDuoMode_Single_Tuner ||
sdr->device.rspDuoMode == sdrplay_api_RspDuoMode_Master)
sdr->device.tuner = sdrplay_api_Tuner_A;
} else if(strcmp(antenna,"tuner1-50ohm") == 0 || strcmp(antenna,"Tuner 1 50ohm") == 0 || strcmp(antenna,"high-z") == 0 || strcmp(antenna,"High Z") == 0){
if(sdr->device.rspDuoMode != sdrplay_api_RspDuoMode_Dual_Tuner && sdr->device.tuner & sdrplay_api_Tuner_A)
sdr->device.tuner = sdrplay_api_Tuner_A;
else
valid_tuner = 0;
} else if(strcmp(antenna,"tuner2-50ohm") == 0 || strcmp(antenna,"Tuner 2 50ohm") == 0){
if(sdr->device.rspDuoMode != sdrplay_api_RspDuoMode_Dual_Tuner && sdr->device.tuner & sdrplay_api_Tuner_B)
sdr->device.tuner = sdrplay_api_Tuner_B;
else
valid_tuner = 0;
} else
valid_tuner = 0;
if(!valid_tuner){
fprintf(stdout,"sdrplay - antenna %s is invalid or not available\n",antenna);
return -1;
}
return 0;
}
static int select_device(struct sdrstate *sdr){
sdrplay_api_ErrT err;
err = sdrplay_api_SelectDevice(&sdr->device);
if(err != sdrplay_api_Success){
fprintf(stdout,"sdrplay_api_SelectDevice() failed: %s\n",sdrplay_api_GetErrorString(err));
return -1;
}
sdr->device_status |= DEVICE_SELECTED;
err = sdrplay_api_UnlockDeviceApi();
sdr->device_status &= ~DEVICE_API_LOCKED;
if(err != sdrplay_api_Success){
fprintf(stdout,"sdrplay_api_UnlockDeviceApi() failed: %s\n",sdrplay_api_GetErrorString(err));
return -1;
}
err = sdrplay_api_DebugEnable(sdr->device.dev,dbgLvl);
if(err != sdrplay_api_Success){
fprintf(stdout,"sdrplay_api_DebugEnable() failed: %s\n",sdrplay_api_GetErrorString(err));
return -1;
}
err = sdrplay_api_GetDeviceParams(sdr->device.dev,&sdr->device_params);
if(err != sdrplay_api_Success){
fprintf(stdout,"sdrplay_api_GetDeviceParams() failed: %s\n",sdrplay_api_GetErrorString(err));
return -1;
}
if(sdr->device.tuner == sdrplay_api_Tuner_A){
sdr->rx_channel_params = sdr->device_params->rxChannelA;
} else if(sdr->device.tuner == sdrplay_api_Tuner_B){
sdr->rx_channel_params = sdr->device_params->rxChannelB;
} else {
fprintf(stdout,"sdrplay - invalid tuner: %d\n",sdr->device.tuner);
return -1;
}
return 0;
}
static double set_center_freq(struct sdrstate *sdr,double const frequency){
struct frontend * const frontend = sdr->frontend;
double const calibrated_frequency = frequency * (1 + frontend->calibrate);
sdr->rx_channel_params->tunerParams.rfFreq.rfHz = calibrated_frequency;
if(sdr->device_status & DEVICE_STREAMING){
sdrplay_api_ErrT err;
err = sdrplay_api_Update(sdr->device.dev,sdr->device.tuner,sdrplay_api_Update_Tuner_Frf,sdrplay_api_Update_Ext1_None);
if(err != sdrplay_api_Success){
fprintf(stdout,"sdrplay_api_Update(Tuner_Frf) failed: %s\n",sdrplay_api_GetErrorString(err));
return -1;
}
}
frontend->frequency = calibrated_frequency;
return frontend->frequency;
}
static int set_ifreq(struct sdrstate *sdr,int const ifreq){
int valid_if = 1;
if(sdr->device.hwVer == SDRPLAY_RSPduo_ID && (sdr->device.rspDuoMode == sdrplay_api_RspDuoMode_Dual_Tuner || sdr->device.rspDuoMode == sdrplay_api_RspDuoMode_Master || sdr->device.rspDuoMode == sdrplay_api_RspDuoMode_Slave)){
if(sdr->device.rspDuoSampleFreq == 6e6 && (ifreq == -1 || ifreq == 1620))
sdr->rx_channel_params->tunerParams.ifType = sdrplay_api_IF_1_620;
else if(sdr->device.rspDuoSampleFreq == 8e6 && (ifreq == -1 || ifreq == 2048))
sdr->rx_channel_params->tunerParams.ifType = sdrplay_api_IF_2_048;
else
valid_if = 0;
} else {
if(ifreq == -1 || ifreq == 0){
sdr->rx_channel_params->tunerParams.ifType = sdrplay_api_IF_Zero;
} else if(ifreq == 450){
sdr->rx_channel_params->tunerParams.ifType = sdrplay_api_IF_0_450;
} else if(ifreq == 1620){
sdr->rx_channel_params->tunerParams.ifType = sdrplay_api_IF_1_620;
} else if(ifreq == 2048){
sdr->rx_channel_params->tunerParams.ifType = sdrplay_api_IF_2_048;
} else
valid_if = 0;
}
if(!valid_if){
fprintf(stdout,"sdrplay - IF=%d is invalid\n",ifreq);
return -1;
}
return 0;
}
static int set_bandwidth(struct sdrstate *sdr,int const bandwidth,double const samprate){
double samprate_kHz = samprate / 1000.0;
int valid_bandwidth = 1;
if(bandwidth == sdrplay_api_BW_0_200 || (bandwidth == -1 && samprate_kHz < sdrplay_api_BW_0_300)){
sdr->rx_channel_params->tunerParams.bwType = sdrplay_api_BW_0_200;
} else if(bandwidth == sdrplay_api_BW_0_300 || (bandwidth == -1 && samprate_kHz < sdrplay_api_BW_0_600)){
sdr->rx_channel_params->tunerParams.bwType = sdrplay_api_BW_0_300;
} else if(bandwidth == sdrplay_api_BW_0_600 || (bandwidth == -1 && samprate_kHz < sdrplay_api_BW_1_536)){
sdr->rx_channel_params->tunerParams.bwType = sdrplay_api_BW_0_600;
} else if(bandwidth == sdrplay_api_BW_1_536 || (bandwidth == -1 && samprate_kHz < sdrplay_api_BW_5_000)){
sdr->rx_channel_params->tunerParams.bwType = sdrplay_api_BW_1_536;
} else if(bandwidth == sdrplay_api_BW_5_000 || (bandwidth == -1 && samprate_kHz < sdrplay_api_BW_6_000)){
sdr->rx_channel_params->tunerParams.bwType = sdrplay_api_BW_5_000;
} else if(bandwidth == sdrplay_api_BW_6_000 || (bandwidth == -1 && samprate_kHz < sdrplay_api_BW_7_000)){
sdr->rx_channel_params->tunerParams.bwType = sdrplay_api_BW_6_000;
} else if(bandwidth == sdrplay_api_BW_7_000 || (bandwidth == -1 && samprate_kHz < sdrplay_api_BW_8_000)){
sdr->rx_channel_params->tunerParams.bwType = sdrplay_api_BW_7_000;
} else if(bandwidth == sdrplay_api_BW_8_000 || (bandwidth == -1 && samprate_kHz >= sdrplay_api_BW_8_000)){
sdr->rx_channel_params->tunerParams.bwType = sdrplay_api_BW_8_000;
} else
valid_bandwidth = 0;
if(!valid_bandwidth){
fprintf(stdout,"sdrplay - Bandwidth=%d is invalid\n",bandwidth);
return -1;
}
return 0;
}
static int set_samplerate(struct sdrstate *sdr,double const samprate){
// get actual sample rate and decimation
double actual_sample_rate;
int decimation;
for(decimation = 1; decimation <= MAX_DECIMATION; decimation *= 2){
actual_sample_rate = samprate * decimation;
if(actual_sample_rate >= MIN_SAMPLE_RATE)
break;
}
if(!(actual_sample_rate >= MIN_SAMPLE_RATE && actual_sample_rate <= MAX_SAMPLE_RATE)){
fprintf(stdout,"sdrplay - sample_rate=%f is invalid\n",samprate);
return -1;
}
if(sdr->device.hwVer == SDRPLAY_RSPduo_ID && (sdr->device.rspDuoMode == sdrplay_api_RspDuoMode_Dual_Tuner || sdr->device.rspDuoMode == sdrplay_api_RspDuoMode_Master || sdr->device.rspDuoMode == sdrplay_api_RspDuoMode_Slave)){
if(actual_sample_rate == MIN_SAMPLE_RATE){
if(sdr->device_params->devParams)
sdr->device_params->devParams->fsFreq.fsHz = sdr->device.rspDuoSampleFreq;
} else {
fprintf(stdout,"sdrplay - sample_rate=%f is invalid\n",samprate);
return -1;
}
} else {
sdr->device_params->devParams->fsFreq.fsHz = actual_sample_rate;
}
if(decimation > 1){
sdr->rx_channel_params->ctrlParams.decimation.enable = 1;
sdr->rx_channel_params->ctrlParams.decimation.decimationFactor = decimation;
} else {
sdr->rx_channel_params->ctrlParams.decimation.enable = 0;
sdr->rx_channel_params->ctrlParams.decimation.decimationFactor = 1;
}
return 0;
}
static double get_samplerate(struct sdrstate *sdr){
double samprate = 0.0;
if(sdr->rx_channel_params->tunerParams.ifType == sdrplay_api_IF_Zero){
samprate = sdr->device_params->devParams->fsFreq.fsHz;
} else if(sdr->rx_channel_params->tunerParams.ifType == sdrplay_api_IF_1_620){
samprate = 2e6;
} else if(sdr->rx_channel_params->tunerParams.ifType == sdrplay_api_IF_2_048){
samprate = 2e6;
}
if(sdr->rx_channel_params->ctrlParams.decimation.enable)
samprate /= sdr->rx_channel_params->ctrlParams.decimation.decimationFactor;
return samprate;
}
static int set_antenna(struct sdrstate *sdr,char const *antenna){
int valid_antenna = 1;
if(sdr->device.hwVer == SDRPLAY_RSP2_ID){
if(antenna == NULL || strcmp(antenna, "antenna-a") == 0 || strcmp(antenna, "Antenna A") == 0){
sdr->rx_channel_params->rsp2TunerParams.antennaSel = sdrplay_api_Rsp2_ANTENNA_A;
sdr->rx_channel_params->rsp2TunerParams.amPortSel = sdrplay_api_Rsp2_AMPORT_2;
} else if(strcmp(antenna, "antenna-b") == 0 || strcmp(antenna, "Antenna B") == 0){
sdr->rx_channel_params->rsp2TunerParams.antennaSel = sdrplay_api_Rsp2_ANTENNA_B;
sdr->rx_channel_params->rsp2TunerParams.amPortSel = sdrplay_api_Rsp2_AMPORT_2;
} else if(strcmp(antenna, "hi-z") == 0 || strcmp(antenna, "Hi-Z") == 0){
sdr->rx_channel_params->rsp2TunerParams.antennaSel = sdrplay_api_Rsp2_ANTENNA_A;
sdr->rx_channel_params->rsp2TunerParams.amPortSel = sdrplay_api_Rsp2_AMPORT_1;
} else
valid_antenna = 0;
} else if(sdr->device.hwVer == SDRPLAY_RSPduo_ID){
if(antenna == NULL){
sdr->rx_channel_params->rspDuoTunerParams.tuner1AmPortSel = sdrplay_api_RspDuo_AMPORT_2;
} else if(strcmp(antenna,"tuner1-50ohm") == 0 || strcmp(antenna,"Tuner 1 50ohm") == 0){
if(sdr->device.tuner & sdrplay_api_Tuner_A)
sdr->rx_channel_params->rspDuoTunerParams.tuner1AmPortSel = sdrplay_api_RspDuo_AMPORT_2;
else
valid_antenna = 0;
} else if(strcmp(antenna,"tuner2-50ohm") == 0 || strcmp(antenna,"Tuner 2 50ohm") == 0){
if(sdr->device.tuner & sdrplay_api_Tuner_B)
sdr->rx_channel_params->rspDuoTunerParams.tuner1AmPortSel = sdrplay_api_RspDuo_AMPORT_2;
else
valid_antenna = 0;
} else if(strcmp(antenna,"high-z") == 0 || strcmp(antenna,"High Z") == 0){
if(sdr->device.tuner & sdrplay_api_Tuner_A)
sdr->rx_channel_params->rspDuoTunerParams.tuner1AmPortSel = sdrplay_api_RspDuo_AMPORT_1;
else
valid_antenna = 0;
} else
valid_antenna = 0;
} else if(sdr->device.hwVer == SDRPLAY_RSPdx_ID){
if(antenna == NULL || strcmp(antenna, "antenna-a") == 0 || strcmp(antenna, "Antenna A") == 0){
sdr->device_params->devParams->rspDxParams.antennaSel = sdrplay_api_RspDx_ANTENNA_A;
} else if(strcmp(antenna, "antenna-b") == 0 || strcmp(antenna, "Antenna B") == 0){
sdr->device_params->devParams->rspDxParams.antennaSel = sdrplay_api_RspDx_ANTENNA_B;
} else if(strcmp(antenna, "antenna-c") == 0 || strcmp(antenna, "Antenna C") == 0){
sdr->device_params->devParams->rspDxParams.antennaSel = sdrplay_api_RspDx_ANTENNA_C;
} else
valid_antenna = 0;
} else if(sdr->device.hwVer == SDRPLAY_RSPdxR2_ID){
if(antenna == NULL || strcmp(antenna, "antenna-a") == 0 || strcmp(antenna, "Antenna A") == 0){
sdr->device_params->devParams->rspDxParams.antennaSel = sdrplay_api_RspDx_ANTENNA_A;
} else if(strcmp(antenna, "antenna-b") == 0 || strcmp(antenna, "Antenna B") == 0){
sdr->device_params->devParams->rspDxParams.antennaSel = sdrplay_api_RspDx_ANTENNA_B;
} else if(strcmp(antenna, "antenna-c") == 0 || strcmp(antenna, "Antenna C") == 0){
sdr->device_params->devParams->rspDxParams.antennaSel = sdrplay_api_RspDx_ANTENNA_C;
} else
valid_antenna = 0;
} else {
if(antenna != NULL)
valid_antenna = 0;
}
if(!valid_antenna){
fprintf(stdout,"sdrplay - Antenna=%s is invalid (or not available)\n",antenna);
return -1;
}
return 0;
}
static uint8_t const *get_lna_states(struct sdrstate *sdr,double const frequency,int *lna_state_count){
if(sdr->device.hwVer == SDRPLAY_RSP1_ID){
if(frequency < 420e6){
*lna_state_count = sizeof(rsp1_0_420_lna_states) / sizeof(uint8_t);
return rsp1_0_420_lna_states;
} else if(frequency < 1000e6){
*lna_state_count = sizeof(rsp1_420_1000_lna_states) / sizeof(uint8_t);
return rsp1_420_1000_lna_states;
} else {
*lna_state_count = sizeof(rsp1_1000_2000_lna_states) / sizeof(uint8_t);
return rsp1_1000_2000_lna_states;
}
} else if(sdr->device.hwVer == SDRPLAY_RSP1A_ID){
if(frequency < 60e6){
*lna_state_count = sizeof(rsp1a_0_60_lna_states) / sizeof(uint8_t);
return rsp1a_0_60_lna_states;
} else if(frequency < 420e6){
*lna_state_count = sizeof(rsp1a_60_420_lna_states) / sizeof(uint8_t);
return rsp1a_60_420_lna_states;
} else if(frequency < 1000e6){
*lna_state_count = sizeof(rsp1a_420_1000_lna_states) / sizeof(uint8_t);
return rsp1a_420_1000_lna_states;
} else {
*lna_state_count = sizeof(rsp1a_1000_2000_lna_states) / sizeof(uint8_t);
return rsp1a_1000_2000_lna_states;
}
} else if(sdr->device.hwVer == SDRPLAY_RSP1B_ID){
if(frequency < 50e6){
*lna_state_count = sizeof(rsp1b_0_50_lna_states) / sizeof(uint8_t);
return rsp1b_0_50_lna_states;
} else if(frequency < 60e6){
*lna_state_count = sizeof(rsp1b_50_60_lna_states) / sizeof(uint8_t);
return rsp1b_50_60_lna_states;
} else if(frequency < 420e6){
*lna_state_count = sizeof(rsp1b_60_420_lna_states) / sizeof(uint8_t);
return rsp1b_60_420_lna_states;
} else if(frequency < 1000e6){
*lna_state_count = sizeof(rsp1b_420_1000_lna_states) / sizeof(uint8_t);
return rsp1b_420_1000_lna_states;
} else {
*lna_state_count = sizeof(rsp1b_1000_2000_lna_states) / sizeof(uint8_t);
return rsp1b_1000_2000_lna_states;
}
} else if(sdr->device.hwVer == SDRPLAY_RSP2_ID){
if(frequency < 60e6 && sdr->rx_channel_params->rsp2TunerParams.amPortSel == sdrplay_api_Rsp2_AMPORT_1){
*lna_state_count = sizeof(rsp2_0_60_hiz_lna_states) / sizeof(uint8_t);
return rsp2_0_60_hiz_lna_states;
} else if(frequency < 420e6){
*lna_state_count = sizeof(rsp2_0_420_lna_states) / sizeof(uint8_t);
return rsp2_0_420_lna_states;
} else if(frequency < 1000e6){
*lna_state_count = sizeof(rsp2_420_1000_lna_states) / sizeof(uint8_t);
return rsp2_420_1000_lna_states;
} else {
*lna_state_count = sizeof(rsp2_1000_2000_lna_states) / sizeof(uint8_t);
return rsp2_1000_2000_lna_states;
}
} else if(sdr->device.hwVer == SDRPLAY_RSPduo_ID){
if(frequency < 60e6 && sdr->rx_channel_params->rspDuoTunerParams.tuner1AmPortSel == sdrplay_api_RspDuo_AMPORT_1){
*lna_state_count = sizeof(rspduo_0_60_hiz_lna_states) / sizeof(uint8_t);
return rspduo_0_60_hiz_lna_states;
} else if(frequency < 60e6){
*lna_state_count = sizeof(rspduo_0_60_lna_states) / sizeof(uint8_t);
return rspduo_0_60_lna_states;
} else if(frequency < 420e6){
*lna_state_count = sizeof(rspduo_60_420_lna_states) / sizeof(uint8_t);
return rspduo_60_420_lna_states;
} else if(frequency < 1000e6){
*lna_state_count = sizeof(rspduo_420_1000_lna_states) / sizeof(uint8_t);
return rspduo_420_1000_lna_states;
} else {
*lna_state_count = sizeof(rspduo_1000_2000_lna_states) / sizeof(uint8_t);
return rspduo_1000_2000_lna_states;
}
} else if(sdr->device.hwVer == SDRPLAY_RSPdx_ID){
if(frequency < 2e6 && sdr->device_params->devParams->rspDxParams.hdrEnable == 1){
*lna_state_count = sizeof(rspdx_0_2_hdr_lna_states) / sizeof(uint8_t);
return rspdx_0_2_hdr_lna_states;
} else if(frequency < 12e6){
*lna_state_count = sizeof(rspdx_0_12_lna_states) / sizeof(uint8_t);
return rspdx_0_12_lna_states;
} else if(frequency < 50e6){
*lna_state_count = sizeof(rspdx_12_50_lna_states) / sizeof(uint8_t);
return rspdx_12_50_lna_states;
} else if(frequency < 60e6){
*lna_state_count = sizeof(rspdx_50_60_lna_states) / sizeof(uint8_t);
return rspdx_50_60_lna_states;
} else if(frequency < 250e6){
*lna_state_count = sizeof(rspdx_60_250_lna_states) / sizeof(uint8_t);
return rspdx_60_250_lna_states;
} else if(frequency < 420e6){
*lna_state_count = sizeof(rspdx_250_420_lna_states) / sizeof(uint8_t);
return rspdx_250_420_lna_states;
} else if(frequency < 1000e6){
*lna_state_count = sizeof(rspdx_420_1000_lna_states) / sizeof(uint8_t);
return rspdx_420_1000_lna_states;
} else {
*lna_state_count = sizeof(rspdx_1000_2000_lna_states) / sizeof(uint8_t);
return rspdx_1000_2000_lna_states;
}
} else if(sdr->device.hwVer == SDRPLAY_RSPdxR2_ID){
if(frequency < 2e6 && sdr->device_params->devParams->rspDxParams.hdrEnable == 1){
*lna_state_count = sizeof(rspdxr2_0_2_hdr_lna_states) / sizeof(uint8_t);
return rspdxr2_0_2_hdr_lna_states;
} else if(frequency < 12e6){
*lna_state_count = sizeof(rspdxr2_0_12_lna_states) / sizeof(uint8_t);
return rspdxr2_0_12_lna_states;
} else if(frequency < 50e6){
*lna_state_count = sizeof(rspdxr2_12_50_lna_states) / sizeof(uint8_t);
return rspdxr2_12_50_lna_states;
} else if(frequency < 60e6){
*lna_state_count = sizeof(rspdxr2_50_60_lna_states) / sizeof(uint8_t);
return rspdxr2_50_60_lna_states;
} else if(frequency < 250e6){
*lna_state_count = sizeof(rspdxr2_60_250_lna_states) / sizeof(uint8_t);
return rspdxr2_60_250_lna_states;
} else if(frequency < 420e6){
*lna_state_count = sizeof(rspdxr2_250_420_lna_states) / sizeof(uint8_t);
return rspdxr2_250_420_lna_states;
} else if(frequency < 1000e6){
*lna_state_count = sizeof(rspdxr2_420_1000_lna_states) / sizeof(uint8_t);
return rspdxr2_420_1000_lna_states;
} else {
*lna_state_count = sizeof(rspdxr2_1000_2000_lna_states) / sizeof(uint8_t);
return rspdxr2_1000_2000_lna_states;
}
}
*lna_state_count = 0;
return NULL;
}
static int set_rf_gain(struct sdrstate *sdr,int const lna_state,int const rf_att,int const rf_gr,double const frequency){
struct frontend *frontend = sdr->frontend;
int lna_state_count = 0;
uint8_t const * const lna_states = get_lna_states(sdr,frequency,&lna_state_count);
assert(lna_states != NULL);
assert(lna_state_count > 0);
int valid_rf_gain = 1;
if(lna_state != -1) {
if(rf_att != -1 || rf_gr != -1){
fprintf(stdout,"sdrplay - only one of lna-state, rf-att, or rf-gr is allowed\n");
return -1;
}
if(lna_state >= 0 && lna_state < lna_state_count)
sdr->rx_channel_params->tunerParams.gain.LNAstate = lna_state;
else
valid_rf_gain = 0;
} else {
if(rf_att != -1 && rf_gr != -1){
fprintf(stdout,"sdrplay - only one of lna-state, rf-att, or rf-gr is allowed\n");
return -1;
}
int rf_gRdB = rf_att;
if(rf_gRdB == -1)
rf_gRdB = rf_gr;
if(rf_gRdB == -1)
return 0;
// find the closest LNA state
int lna_state_min = -1;
int delta_min = 1000;
for(int i = 0; i < lna_state_count; i++){
int delta = abs(lna_states[i] - rf_gRdB);
if(delta < delta_min){
lna_state_min = i;
delta_min = delta;
}
}
sdr->rx_channel_params->tunerParams.gain.LNAstate = lna_state_min;
}
if(!valid_rf_gain){
fprintf(stdout,"sdrplay - RF gain reduction is invalid - lna_state=%d rf_att=%d rf_gr=%d\n",lna_state,rf_att,rf_gr);
return -1;
}
if(sdr->device_status & DEVICE_STREAMING){
sdrplay_api_ErrT err;
err = sdrplay_api_Update(sdr->device.dev,sdr->device.tuner,sdrplay_api_Update_Tuner_Gr,sdrplay_api_Update_Ext1_None);
if(err != sdrplay_api_Success){
fprintf(stdout,"sdrplay_api_Update(Tuner_Gr) failed: %s\n",sdrplay_api_GetErrorString(err));
return -1;
}
}
sdr->scale = scale_AD(frontend);
return 0;
}
static float get_rf_atten(struct sdrstate *sdr,double const frequency){
int lna_state_count = 0;
uint8_t const * const lna_states = get_lna_states(sdr,frequency,&lna_state_count);
assert(lna_states != NULL);
assert(lna_state_count > 0);
int const lna_state = sdr->rx_channel_params->tunerParams.gain.LNAstate;
if(lna_state < 0 || lna_state >= lna_state_count){
fprintf(stdout,"LNA state out of range: %d - range=[%d,%d(\n",lna_state,0,lna_state_count);
return NAN;
}
return (float)lna_states[lna_state];
}
static int set_if_gain(struct sdrstate *sdr,int const if_att,int const if_gr,int const if_agc,int const if_agc_rate,int const if_agc_setPoint_dBfs,int const if_agc_attack_ms,int const if_agc_decay_ms,int const if_agc_decay_delay_ms,int const if_agc_decay_threshold_dB){
if(!if_agc){
int if_gRdB = if_att;
if(if_gRdB == -1)
if_gRdB = if_gr;
if(if_gRdB != -1){
if(if_gRdB >= sdrplay_api_NORMAL_MIN_GR && if_gRdB <= MAX_BB_GR){
sdr->rx_channel_params->ctrlParams.agc.enable = sdrplay_api_AGC_DISABLE;
sdr->rx_channel_params->tunerParams.gain.gRdB = if_gRdB;
} else {
fprintf(stdout,"sdrplay - IF gain reduction is out of range - if_att/if_gr=%d\n",if_gRdB);
return -1;
}
}
if(sdr->device_status & DEVICE_STREAMING){
sdrplay_api_ErrT err;
err = sdrplay_api_Update(sdr->device.dev,sdr->device.tuner,sdrplay_api_Update_Ctrl_Agc | sdrplay_api_Update_Tuner_Gr,sdrplay_api_Update_Ext1_None);
if(err != sdrplay_api_Success){