test_sx: test stream activation just before TX
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@ -3,12 +3,47 @@
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#include <SoapySDR/Logger.h>
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#include <string.h>
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#include <math.h>
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#include "logger.h"
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#include "config.h"
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#include "results.h"
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#include "utils.h"
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void soapy_log_handler(const SoapySDRLogLevel logLevel, const char *message)
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{
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int level;
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switch(logLevel) {
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case SOAPY_SDR_CRITICAL:
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case SOAPY_SDR_FATAL:
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level = LVL_FATAL;
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break;
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case SOAPY_SDR_ERROR:
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level = LVL_ERR;
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break;
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case SOAPY_SDR_WARNING:
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level = LVL_WARN;
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break;
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case SOAPY_SDR_INFO:
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level = LVL_INFO;
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break;
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case SOAPY_SDR_DEBUG:
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level = LVL_DEBUG;
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break;
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default:
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level = LVL_DUMP;
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break;
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}
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LOG(level, "soapy [%d]: %s", logLevel, message);
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}
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typedef struct {
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SoapySDRDevice *sdr;
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@ -22,6 +57,12 @@ int main(void)
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{
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sdr_ctx_t ctx;
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logger_init();
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// set up logging
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SoapySDR_registerLogHandler(soapy_log_handler);
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SoapySDR_setLogLevel(SOAPY_SDR_DEBUG);
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SoapySDRKwargs args;
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memset(&args, 0, sizeof(args));
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SoapySDRKwargs_set(&args, "driver", "sx");
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@ -75,19 +116,39 @@ int main(void)
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#define BUFSIZE 300000
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#if 0
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if(SoapySDRDevice_activateStream(ctx.sdr, ctx.tx_stream, 0, 0, 0) != 0) {
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LOG(LVL_ERR, "activateStream fail: %s", SoapySDRDevice_lastError());
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return ERR_SOAPY;
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}
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#endif
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float complex samples[BUFSIZE];
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float dphi = 6.28 * 20e3 / SDR_TX_SAMPLING_RATE;
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float twopi = 6.283185307f;
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float offset_hz = 20e3;
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float fm_osc_freq_hz = 1.0f;
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float fm_osc_dev_hz = 5e3;
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float fm_dphi = twopi * fm_osc_freq_hz / SDR_TX_SAMPLING_RATE;
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float fm_phi = 0.0f;
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float phi = 0.0f;
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float twopi = 6.283185307;
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int64_t timeNs = 0;
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while(true) {
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for(size_t i = 0; i < BUFSIZE; i++) {
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fm_phi += fm_dphi;
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if(fm_phi > twopi) {
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fm_phi -= twopi;
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}
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float fm_dev_hz = fm_osc_dev_hz * sinf(fm_phi);
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float dphi = twopi * (offset_hz + fm_dev_hz) / SDR_TX_SAMPLING_RATE;
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phi += dphi;
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if(phi > twopi) {
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phi -= twopi;
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@ -95,15 +156,39 @@ int main(void)
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samples[i] = cexpf(I * phi);
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}
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timeNs += 1000000000LL + 1000000000LL * BUFSIZE / SDR_TX_SAMPLING_RATE;
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if(SoapySDRDevice_activateStream(ctx.sdr, ctx.tx_stream, 0, 0, 0) != 0) {
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LOG(LVL_ERR, "activateStream fail: %s", SoapySDRDevice_lastError());
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return ERR_SOAPY;
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}
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double tstart = get_hires_time();
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int flags = 0;
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void *buffs[] = {(void*)samples};
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size_t timeout_us = 100000;
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int ret = SoapySDRDevice_writeStream(ctx.sdr, ctx.tx_stream, (const void* const*)buffs, BUFSIZE, &flags, 0, timeout_us);
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int ret = SoapySDRDevice_writeStream(ctx.sdr, ctx.tx_stream, (const void* const*)buffs, BUFSIZE, &flags, timeNs, timeout_us);
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if(ret <= 0) {
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LOG(LVL_ERR, "writeStream fail: %s", SoapySDRDevice_lastError());
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return ERR_SOAPY;
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}
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double tend_write = get_hires_time();
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if(SoapySDRDevice_deactivateStream(ctx.sdr, ctx.tx_stream, 0, 0) != 0) {
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LOG(LVL_ERR, "deactivateStream fail: %s", SoapySDRDevice_lastError());
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return ERR_SOAPY;
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}
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double tend = get_hires_time();
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LOG(LVL_INFO, "write duration: %.3f ms", (tend_write - tstart) * 1000);
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LOG(LVL_INFO, "total duration: %.3f ms", (tend - tstart) * 1000);
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fsleep(1);
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}
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return OK;
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