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SoapySDR: Flip initialization of RX and TX, so LimeSDR works with frequencies below 30 MHz

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pull/1/head
Andreas Eversberg 5 years ago
parent c774180082
commit 0b504dbeb3
1 changed files with 86 additions and 86 deletions
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  1. 172
      src/libsdr/soapy.c

172
src/libsdr/soapy.c
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@ -103,245 +103,245 @@ int soapy_open(size_t channel, const char *_device_args, const char *_stream_arg
return -EIO;
}
if (tx_frequency) {
if (rx_frequency) {
/* get number of channels and check if requested channel is in range */
num_channels = SoapySDRDevice_getNumChannels(sdr, SOAPY_SDR_TX);
PDEBUG(DSOAPY, DEBUG_DEBUG, "We have %d TX channel, selecting channel #%d\n", (int)num_channels, (int)channel);
num_channels = SoapySDRDevice_getNumChannels(sdr, SOAPY_SDR_RX);
PDEBUG(DSOAPY, DEBUG_DEBUG, "We have %d RX channel, selecting channel #%d\n", (int)num_channels, (int)channel);
if (channel >= num_channels) {
PDEBUG(DSOAPY, DEBUG_ERROR, "Requested channel #%d (capable of TX) does not exist. Please select channel %d..%d!\n", (int)channel, 0, (int)num_channels - 1);
PDEBUG(DSOAPY, DEBUG_ERROR, "Requested channel #%d (capable of RX) does not exist. Please select channel %d..%d!\n", (int)channel, 0, (int)num_channels - 1);
soapy_close();
return -EIO;
}
/* antenna */
if (tx_antenna && tx_antenna[0]) {
if (!strcasecmp(tx_antenna, "list")) {
if (rx_antenna && rx_antenna[0]) {
if (!strcasecmp(rx_antenna, "list")) {
char **antennas;
size_t antennas_length;
int i;
antennas = SoapySDRDevice_listAntennas(sdr, SOAPY_SDR_TX, channel, &antennas_length);
antennas = SoapySDRDevice_listAntennas(sdr, SOAPY_SDR_RX, channel, &antennas_length);
if (!antennas) {
PDEBUG(DSOAPY, DEBUG_ERROR, "Failed to request list of TX antennas!\n");
PDEBUG(DSOAPY, DEBUG_ERROR, "Failed to request list of RX antennas!\n");
soapy_close();
return -EIO;
}
for (i = 0; i < (int)antennas_length; i++)
PDEBUG(DSOAPY, DEBUG_NOTICE, "TX Antenna: '%s'\n", antennas[i]);
got_antenna = SoapySDRDevice_getAntenna(sdr, SOAPY_SDR_TX, channel);
PDEBUG(DSOAPY, DEBUG_NOTICE, "Default TX Antenna: '%s'\n", got_antenna);
PDEBUG(DSOAPY, DEBUG_NOTICE, "RX Antenna: '%s'\n", antennas[i]);
got_antenna = SoapySDRDevice_getAntenna(sdr, SOAPY_SDR_RX, channel);
PDEBUG(DSOAPY, DEBUG_NOTICE, "Default RX Antenna: '%s'\n", got_antenna);
soapy_close();
return 1;
}
if (SoapySDRDevice_setAntenna(sdr, SOAPY_SDR_TX, channel, tx_antenna) != 0) {
PDEBUG(DSOAPY, DEBUG_ERROR, "Failed to set TX antenna to '%s'\n", tx_antenna);
if (SoapySDRDevice_setAntenna(sdr, SOAPY_SDR_RX, channel, rx_antenna) != 0) {
PDEBUG(DSOAPY, DEBUG_ERROR, "Failed to set RX antenna to '%s'\n", rx_antenna);
soapy_close();
return -EIO;
}
got_antenna = SoapySDRDevice_getAntenna(sdr, SOAPY_SDR_TX, channel);
if (!!strcasecmp(tx_antenna, got_antenna)) {
PDEBUG(DSOAPY, DEBUG_NOTICE, "Given TX antenna '%s' was accepted, but driver claims to use '%s'\n", tx_antenna, got_antenna);
got_antenna = SoapySDRDevice_getAntenna(sdr, SOAPY_SDR_RX, channel);
if (!!strcasecmp(rx_antenna, got_antenna)) {
PDEBUG(DSOAPY, DEBUG_NOTICE, "Given RX antenna '%s' was accepted, but driver claims to use '%s'\n", rx_antenna, got_antenna);
soapy_close();
return -EINVAL;
}
}
/* set rate */
if (SoapySDRDevice_setSampleRate(sdr, SOAPY_SDR_TX, channel, rate) != 0) {
PDEBUG(DSOAPY, DEBUG_ERROR, "Failed to set TX rate to %.0f Hz\n", rate);
if (SoapySDRDevice_setSampleRate(sdr, SOAPY_SDR_RX, channel, rate) != 0) {
PDEBUG(DSOAPY, DEBUG_ERROR, "Failed to set RX rate to %.0f Hz\n", rate);
soapy_close();
return -EIO;
}
/* see what rate actually is */
got_rate = SoapySDRDevice_getSampleRate(sdr, SOAPY_SDR_TX, channel);
got_rate = SoapySDRDevice_getSampleRate(sdr, SOAPY_SDR_RX, channel);
if (fabs(got_rate - rate) > 1.0) {
PDEBUG(DSOAPY, DEBUG_ERROR, "Given TX rate %.3f Hz is not supported, try %.3f Hz\n", rate, got_rate);
PDEBUG(DSOAPY, DEBUG_ERROR, "Given RX rate %.3f Hz is not supported, try %.3f Hz\n", rate, got_rate);
soapy_close();
return -EINVAL;
}
if (tx_gain) {
if (rx_gain) {
/* set gain */
if (SoapySDRDevice_setGain(sdr, SOAPY_SDR_TX, channel, tx_gain) != 0) {
PDEBUG(DSOAPY, DEBUG_ERROR, "Failed to set TX gain to %.0f\n", tx_gain);
if (SoapySDRDevice_setGain(sdr, SOAPY_SDR_RX, channel, rx_gain) != 0) {
PDEBUG(DSOAPY, DEBUG_ERROR, "Failed to set RX gain to %.0f\n", rx_gain);
soapy_close();
return -EIO;
}
/* see what gain actually is */
got_gain = SoapySDRDevice_getGain(sdr, SOAPY_SDR_TX, channel);
if (fabs(got_gain - tx_gain) > 0.001) {
PDEBUG(DSOAPY, DEBUG_NOTICE, "Given TX gain %.3f is not supported, we use %.3f\n", tx_gain, got_gain);
tx_gain = got_gain;
got_gain = SoapySDRDevice_getGain(sdr, SOAPY_SDR_RX, channel);
if (fabs(got_gain - rx_gain) > 0.001) {
PDEBUG(DSOAPY, DEBUG_NOTICE, "Given RX gain %.3f is not supported, we use %.3f\n", rx_gain, got_gain);
rx_gain = got_gain;
}
}
/* hack to make limesdr tune rx to tx */
if (tx_frequency == rx_frequency)
rx_frequency += 1.0;
/* set frequency */
if (SoapySDRDevice_setFrequency(sdr, SOAPY_SDR_TX, channel, tx_frequency, &tune_args) != 0) {
PDEBUG(DSOAPY, DEBUG_ERROR, "Failed to set TX frequency to %.0f Hz\n", tx_frequency);
if (SoapySDRDevice_setFrequency(sdr, SOAPY_SDR_RX, channel, rx_frequency, &tune_args) != 0) {
PDEBUG(DSOAPY, DEBUG_ERROR, "Failed to set RX frequency to %.0f Hz\n", rx_frequency);
soapy_close();
return -EIO;
}
/* see what frequency actually is */
got_frequency = SoapySDRDevice_getFrequency(sdr, SOAPY_SDR_TX, channel);
if (fabs(got_frequency - tx_frequency) > 100.0) {
PDEBUG(DSOAPY, DEBUG_ERROR, "Given TX frequency %.0f Hz is not supported, try %.0f Hz\n", tx_frequency, got_frequency);
got_frequency = SoapySDRDevice_getFrequency(sdr, SOAPY_SDR_RX, channel);
if (fabs(got_frequency - rx_frequency) > 100.0) {
PDEBUG(DSOAPY, DEBUG_ERROR, "Given RX frequency %.0f Hz is not supported, try %.0f Hz\n", rx_frequency, got_frequency);
soapy_close();
return -EINVAL;
}
/* set bandwidth */
if (SoapySDRDevice_setBandwidth(sdr, SOAPY_SDR_TX, channel, bandwidth) != 0) {
PDEBUG(DSOAPY, DEBUG_ERROR, "Failed to set TX bandwidth to %.0f Hz\n", bandwidth);
if (SoapySDRDevice_setBandwidth(sdr, SOAPY_SDR_RX, channel, bandwidth) != 0) {
PDEBUG(DSOAPY, DEBUG_ERROR, "Failed to set RX bandwidth to %.0f Hz\n", bandwidth);
soapy_close();
return -EIO;
}
/* see what bandwidth actually is */
got_bandwidth = SoapySDRDevice_getBandwidth(sdr, SOAPY_SDR_TX, channel);
got_bandwidth = SoapySDRDevice_getBandwidth(sdr, SOAPY_SDR_RX, channel);
if (fabs(got_bandwidth - bandwidth) > 100.0) {
PDEBUG(DSOAPY, DEBUG_ERROR, "Given TX bandwidth %.0f Hz is not supported, try %.0f Hz\n", bandwidth, got_bandwidth);
PDEBUG(DSOAPY, DEBUG_ERROR, "Given RX bandwidth %.0f Hz is not supported, try %.0f Hz\n", bandwidth, got_bandwidth);
soapy_close();
return -EINVAL;
}
/* set up streamer */
if (SoapySDRDevice_setupStream(sdr, &txStream, SOAPY_SDR_TX, SOAPY_SDR_CF32, &channel, 1, &stream_args) != 0) {
PDEBUG(DSOAPY, DEBUG_ERROR, "Failed to set TX streamer args\n");
if (SoapySDRDevice_setupStream(sdr, &rxStream, SOAPY_SDR_RX, SOAPY_SDR_CF32, &channel, 1, &stream_args) != 0) {
PDEBUG(DSOAPY, DEBUG_ERROR, "Failed to set RX streamer args\n");
soapy_close();
return -EIO;
}
/* get buffer sizes */
tx_samps_per_buff = SoapySDRDevice_getStreamMTU(sdr, txStream);
if (tx_samps_per_buff == 0) {
PDEBUG(DSOAPY, DEBUG_ERROR, "Failed to get TX streamer sample buffer\n");
rx_samps_per_buff = SoapySDRDevice_getStreamMTU(sdr, rxStream);
if (rx_samps_per_buff == 0) {
PDEBUG(DSOAPY, DEBUG_ERROR, "Failed to get RX streamer sample buffer\n");
soapy_close();
return -EIO;
}
}
if (rx_frequency) {
if (tx_frequency) {
/* get number of channels and check if requested channel is in range */
num_channels = SoapySDRDevice_getNumChannels(sdr, SOAPY_SDR_RX);
PDEBUG(DSOAPY, DEBUG_DEBUG, "We have %d RX channel, selecting channel #%d\n", (int)num_channels, (int)channel);
num_channels = SoapySDRDevice_getNumChannels(sdr, SOAPY_SDR_TX);
PDEBUG(DSOAPY, DEBUG_DEBUG, "We have %d TX channel, selecting channel #%d\n", (int)num_channels, (int)channel);
if (channel >= num_channels) {
PDEBUG(DSOAPY, DEBUG_ERROR, "Requested channel #%d (capable of RX) does not exist. Please select channel %d..%d!\n", (int)channel, 0, (int)num_channels - 1);
PDEBUG(DSOAPY, DEBUG_ERROR, "Requested channel #%d (capable of TX) does not exist. Please select channel %d..%d!\n", (int)channel, 0, (int)num_channels - 1);
soapy_close();
return -EIO;
}
/* antenna */
if (rx_antenna && rx_antenna[0]) {
if (!strcasecmp(rx_antenna, "list")) {
if (tx_antenna && tx_antenna[0]) {
if (!strcasecmp(tx_antenna, "list")) {
char **antennas;
size_t antennas_length;
int i;
antennas = SoapySDRDevice_listAntennas(sdr, SOAPY_SDR_RX, channel, &antennas_length);
antennas = SoapySDRDevice_listAntennas(sdr, SOAPY_SDR_TX, channel, &antennas_length);
if (!antennas) {
PDEBUG(DSOAPY, DEBUG_ERROR, "Failed to request list of RX antennas!\n");
PDEBUG(DSOAPY, DEBUG_ERROR, "Failed to request list of TX antennas!\n");
soapy_close();
return -EIO;
}
for (i = 0; i < (int)antennas_length; i++)
PDEBUG(DSOAPY, DEBUG_NOTICE, "RX Antenna: '%s'\n", antennas[i]);
got_antenna = SoapySDRDevice_getAntenna(sdr, SOAPY_SDR_RX, channel);
PDEBUG(DSOAPY, DEBUG_NOTICE, "Default RX Antenna: '%s'\n", got_antenna);
PDEBUG(DSOAPY, DEBUG_NOTICE, "TX Antenna: '%s'\n", antennas[i]);
got_antenna = SoapySDRDevice_getAntenna(sdr, SOAPY_SDR_TX, channel);
PDEBUG(DSOAPY, DEBUG_NOTICE, "Default TX Antenna: '%s'\n", got_antenna);
soapy_close();
return 1;
}
if (SoapySDRDevice_setAntenna(sdr, SOAPY_SDR_RX, channel, rx_antenna) != 0) {
PDEBUG(DSOAPY, DEBUG_ERROR, "Failed to set RX antenna to '%s'\n", rx_antenna);
if (SoapySDRDevice_setAntenna(sdr, SOAPY_SDR_TX, channel, tx_antenna) != 0) {
PDEBUG(DSOAPY, DEBUG_ERROR, "Failed to set TX antenna to '%s'\n", tx_antenna);
soapy_close();
return -EIO;
}
got_antenna = SoapySDRDevice_getAntenna(sdr, SOAPY_SDR_RX, channel);
if (!!strcasecmp(rx_antenna, got_antenna)) {
PDEBUG(DSOAPY, DEBUG_NOTICE, "Given RX antenna '%s' was accepted, but driver claims to use '%s'\n", rx_antenna, got_antenna);
got_antenna = SoapySDRDevice_getAntenna(sdr, SOAPY_SDR_TX, channel);
if (!!strcasecmp(tx_antenna, got_antenna)) {
PDEBUG(DSOAPY, DEBUG_NOTICE, "Given TX antenna '%s' was accepted, but driver claims to use '%s'\n", tx_antenna, got_antenna);
soapy_close();
return -EINVAL;
}
}
/* set rate */
if (SoapySDRDevice_setSampleRate(sdr, SOAPY_SDR_RX, channel, rate) != 0) {
PDEBUG(DSOAPY, DEBUG_ERROR, "Failed to set RX rate to %.0f Hz\n", rate);
if (SoapySDRDevice_setSampleRate(sdr, SOAPY_SDR_TX, channel, rate) != 0) {
PDEBUG(DSOAPY, DEBUG_ERROR, "Failed to set TX rate to %.0f Hz\n", rate);
soapy_close();
return -EIO;
}
/* see what rate actually is */
got_rate = SoapySDRDevice_getSampleRate(sdr, SOAPY_SDR_RX, channel);
got_rate = SoapySDRDevice_getSampleRate(sdr, SOAPY_SDR_TX, channel);
if (fabs(got_rate - rate) > 1.0) {
PDEBUG(DSOAPY, DEBUG_ERROR, "Given RX rate %.3f Hz is not supported, try %.3f Hz\n", rate, got_rate);
PDEBUG(DSOAPY, DEBUG_ERROR, "Given TX rate %.3f Hz is not supported, try %.3f Hz\n", rate, got_rate);
soapy_close();
return -EINVAL;
}
if (rx_gain) {
if (tx_gain) {
/* set gain */
if (SoapySDRDevice_setGain(sdr, SOAPY_SDR_RX, channel, rx_gain) != 0) {
PDEBUG(DSOAPY, DEBUG_ERROR, "Failed to set RX gain to %.0f\n", rx_gain);
if (SoapySDRDevice_setGain(sdr, SOAPY_SDR_TX, channel, tx_gain) != 0) {
PDEBUG(DSOAPY, DEBUG_ERROR, "Failed to set TX gain to %.0f\n", tx_gain);
soapy_close();
return -EIO;
}
/* see what gain actually is */
got_gain = SoapySDRDevice_getGain(sdr, SOAPY_SDR_RX, channel);
if (fabs(got_gain - rx_gain) > 0.001) {
PDEBUG(DSOAPY, DEBUG_NOTICE, "Given RX gain %.3f is not supported, we use %.3f\n", rx_gain, got_gain);
rx_gain = got_gain;
got_gain = SoapySDRDevice_getGain(sdr, SOAPY_SDR_TX, channel);
if (fabs(got_gain - tx_gain) > 0.001) {
PDEBUG(DSOAPY, DEBUG_NOTICE, "Given TX gain %.3f is not supported, we use %.3f\n", tx_gain, got_gain);
tx_gain = got_gain;
}
}
/* hack to make limesdr tune rx to tx */
if (tx_frequency == rx_frequency)
rx_frequency += 1.0;
/* set frequency */
if (SoapySDRDevice_setFrequency(sdr, SOAPY_SDR_RX, channel, rx_frequency, &tune_args) != 0) {
PDEBUG(DSOAPY, DEBUG_ERROR, "Failed to set RX frequency to %.0f Hz\n", rx_frequency);
if (SoapySDRDevice_setFrequency(sdr, SOAPY_SDR_TX, channel, tx_frequency, &tune_args) != 0) {
PDEBUG(DSOAPY, DEBUG_ERROR, "Failed to set TX frequency to %.0f Hz\n", tx_frequency);
soapy_close();
return -EIO;
}
/* see what frequency actually is */
got_frequency = SoapySDRDevice_getFrequency(sdr, SOAPY_SDR_RX, channel);
if (fabs(got_frequency - rx_frequency) > 100.0) {
PDEBUG(DSOAPY, DEBUG_ERROR, "Given RX frequency %.0f Hz is not supported, try %.0f Hz\n", rx_frequency, got_frequency);
got_frequency = SoapySDRDevice_getFrequency(sdr, SOAPY_SDR_TX, channel);
if (fabs(got_frequency - tx_frequency) > 100.0) {
PDEBUG(DSOAPY, DEBUG_ERROR, "Given TX frequency %.0f Hz is not supported, try %.0f Hz\n", tx_frequency, got_frequency);
soapy_close();
return -EINVAL;
}
/* set bandwidth */
if (SoapySDRDevice_setBandwidth(sdr, SOAPY_SDR_RX, channel, bandwidth) != 0) {
PDEBUG(DSOAPY, DEBUG_ERROR, "Failed to set RX bandwidth to %.0f Hz\n", bandwidth);
if (SoapySDRDevice_setBandwidth(sdr, SOAPY_SDR_TX, channel, bandwidth) != 0) {
PDEBUG(DSOAPY, DEBUG_ERROR, "Failed to set TX bandwidth to %.0f Hz\n", bandwidth);
soapy_close();
return -EIO;
}
/* see what bandwidth actually is */
got_bandwidth = SoapySDRDevice_getBandwidth(sdr, SOAPY_SDR_RX, channel);
got_bandwidth = SoapySDRDevice_getBandwidth(sdr, SOAPY_SDR_TX, channel);
if (fabs(got_bandwidth - bandwidth) > 100.0) {
PDEBUG(DSOAPY, DEBUG_ERROR, "Given RX bandwidth %.0f Hz is not supported, try %.0f Hz\n", bandwidth, got_bandwidth);
PDEBUG(DSOAPY, DEBUG_ERROR, "Given TX bandwidth %.0f Hz is not supported, try %.0f Hz\n", bandwidth, got_bandwidth);
soapy_close();
return -EINVAL;
}
/* set up streamer */
if (SoapySDRDevice_setupStream(sdr, &rxStream, SOAPY_SDR_RX, SOAPY_SDR_CF32, &channel, 1, &stream_args) != 0) {
PDEBUG(DSOAPY, DEBUG_ERROR, "Failed to set RX streamer args\n");
if (SoapySDRDevice_setupStream(sdr, &txStream, SOAPY_SDR_TX, SOAPY_SDR_CF32, &channel, 1, &stream_args) != 0) {
PDEBUG(DSOAPY, DEBUG_ERROR, "Failed to set TX streamer args\n");
soapy_close();
return -EIO;
}
/* get buffer sizes */
rx_samps_per_buff = SoapySDRDevice_getStreamMTU(sdr, rxStream);
if (rx_samps_per_buff == 0) {
PDEBUG(DSOAPY, DEBUG_ERROR, "Failed to get RX streamer sample buffer\n");
tx_samps_per_buff = SoapySDRDevice_getStreamMTU(sdr, txStream);
if (tx_samps_per_buff == 0) {
PDEBUG(DSOAPY, DEBUG_ERROR, "Failed to get TX streamer sample buffer\n");
soapy_close();
return -EIO;
}

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