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Add channel configuration and update Lime Suite

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Enhanced the Lime driver by introducing channel selection configuration
which enables specifying the channel to be used within the driver's
processes. Adapted various Lime Suite API calls throughout the
`run_experiment` function to utilize the `LimeCfg.channel` as an
argument, ensuring dynamic channel management. This update facilitates
operations with multi-channel setups and aligns API calls with the new
configuration option. Additionally, improved code comments and removed
redundant TX FIFO slot updates.

Bumped version number to reflect new features and improvements.
This commit is contained in:
Kumi 2024-02-11 08:50:46 +01:00
parent 9271d46756
commit 73abc06d6e
Signed by: kumi
GPG key ID: ECBCC9082395383F
2 changed files with 68 additions and 41 deletions
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106
src/limedriver.cpp
View file

@ -14,6 +14,7 @@ h5c++ -shlib limedriver.cpp -std=c++11 -lLimeSuite -o limedriver
*/
#include "limedriver.h"
#include <H5PredType.h>
#include <lime/LimeSuite.h>
#include <vector>
@ -192,6 +193,7 @@ int GetGainRXTX(int *RXgain, int *TXgain) {
std::vector<Config2HDFattr_t> getHDFAttributes(LimeConfig_t &LimeCfg) {
std::vector<Config2HDFattr_t> HDFattr = {
{"sra", "SampleRate [Hz]", H5::PredType::IEEE_F32LE, &LimeCfg.srate, 1},
{"chn", "Channel", H5::PredType::NATIVE_INT, &LimeCfg.channel, 1},
{"lof", "LO Frequency [Hz]", H5::PredType::IEEE_F32LE, &LimeCfg.frq, 1},
{"rlp", "RX LowPass BW [Hz]", H5::PredType::IEEE_F32LE, &LimeCfg.RX_LPF,
1},
@ -397,6 +399,7 @@ LimeConfig_t initializeLimeConfig(int Npulses) {
// modification!
LimeCfg.srate = 30.72e6; // sample rate of the IF DAC/ADC
LimeCfg.channel = 0; // channel to use,
LimeCfg.frq = 50e6; // LO carrier frequency
LimeCfg.RX_gain = 20; // total gain of the receiver
LimeCfg.TX_gain = 30; // total gain of the transmitter
@ -852,11 +855,12 @@ int run_experiment(LimeConfig_t LimeCfg,
// check if the settings are already there
float_type frq_read;
if (LMS_GetLOFrequency(device, LMS_CH_RX, 0, &frq_read) != 0)
if (LMS_GetLOFrequency(device, LMS_CH_RX, LimeCfg.channel, &frq_read) != 0)
error();
float_type srate_read, rf_rate;
if (LMS_GetSampleRate(device, LMS_CH_RX, 0, &srate_read, &rf_rate) != 0)
if (LMS_GetSampleRate(device, LMS_CH_RX, LimeCfg.channel, &srate_read,
&rf_rate) != 0)
error();
bool frqdev = fabs(frq_read - LimeCfg.frq) > 1.0;
@ -922,7 +926,7 @@ int run_experiment(LimeConfig_t LimeCfg,
// First mute the TX output, as the init commands create a lot of garbage
if (LMS_WriteParam(device, LMS7_PD_TLOBUF_TRF, 1) != 0)
error();
if (LMS_SetGaindB(device, LMS_CH_TX, 0, 0) != 0) {
if (LMS_SetGaindB(device, LMS_CH_TX, LimeCfg.channel, 0) != 0) {
cout << "Initializing device first!" << endl;
@ -931,33 +935,44 @@ int run_experiment(LimeConfig_t LimeCfg,
if (LMS_Init(device) != 0)
error();
// retry
if (LMS_SetGaindB(device, LMS_CH_TX, 0, 0) != 0)
if (LMS_SetGaindB(device, LMS_CH_TX, LimeCfg.channel, 0) != 0)
error();
}
if (LMS_SetNormalizedGain(device, LMS_CH_TX, 0, 0.0) != 0)
if (LMS_SetNormalizedGain(device, LMS_CH_TX, LimeCfg.channel, 0.0) != 0)
error();
// Set RX center frequency
if (LMS_SetLOFrequency(device, LMS_CH_RX, 0, LimeCfg.frq) != 0)
if (LMS_SetLOFrequency(device, LMS_CH_RX, LimeCfg.channel, LimeCfg.frq) !=
0)
error();
// Set TX center frequency
if (LMS_SetLOFrequency(device, LMS_CH_TX, 0, LimeCfg.frq) != 0)
if (LMS_SetLOFrequency(device, LMS_CH_TX, LimeCfg.channel, LimeCfg.frq) !=
0)
error();
// Read back the updated frequency for later storage
if (LMS_GetLOFrequency(device, LMS_CH_RX, 0, &frq_read) != 0)
if (LMS_GetLOFrequency(device, LMS_CH_RX, LimeCfg.channel, &frq_read) != 0)
error();
// Enable RX channel
// Channels are numbered starting at 0
if (LMS_EnableChannel(device, LMS_CH_RX, 0, true) != 0)
if (LMS_EnableChannel(device, LMS_CH_RX, LimeCfg.channel, true) != 0)
error();
// Enable TX channels
if (LMS_EnableChannel(device, LMS_CH_TX, 0, true) != 0)
if (LMS_EnableChannel(device, LMS_CH_TX, LimeCfg.channel, true) != 0)
error();
// fwd the TX1 LO to TX2
if (LMS_WriteParam(device, LMS7_EN_NEXTTX_TRF, true) != 0)
error();
if (LMS_WriteParam(device, LMS7_EN_NEXTRX_RFE, true) != 0)
error();
// apply DC offset in TxTSP
if (LMS_WriteParam(device, LMS7_MAC, LimeCfg.channel + 1) != 0)
error();
// if (LMS_WriteParam(device, LMS7_MAC, LimeCfg.channel) != 0) error();
uint16_t DC_I, DC_Q, DC_EN;
DC_EN = 0;
if (LMS_WriteParam(device, LMS7_DCCORRI_TXTSP, LimeCfg.TX_IcorrDC) != 0)
@ -982,8 +997,11 @@ int run_experiment(LimeConfig_t LimeCfg,
// added by me as the IQ calibration did not happen on the chip from python
// or c++
if (LMS_WriteParam(device, LMS7_MAC, 1) != 0)
if (LMS_WriteParam(device, LMS7_MAC, LimeCfg.channel + 1) != 0)
error();
// if (LMS_WriteParam(device, LMS7_MAC, LimeCfg.channel) != 0)
// error();
/*
// read back DC offset in TxTSP
if (LMS_ReadParam(device, LMS7_DCCORRI_TXTSP, &DC_I) != 0) error();
@ -999,8 +1017,8 @@ DC_Q << endl;
// Alternatively, NULL can be passed to LMS_GetAntennaList() to obtain
// number of antennae
int num_antennas;
if ((num_antennas =
LMS_GetAntennaList(device, LMS_CH_RX, 0, antenna_list)) < 0)
if ((num_antennas = LMS_GetAntennaList(device, LMS_CH_RX, LimeCfg.channel,
antenna_list)) < 0)
error();
cout << "Available RX LNAs:\n"; // print available antennae names
@ -1008,17 +1026,19 @@ DC_Q << endl;
cout << i << ": " << antenna_list[i] << endl;
// get and print antenna index and name
int antenna_index;
if ((antenna_index = LMS_GetAntenna(device, LMS_CH_RX, 0)) < 0)
if ((antenna_index = LMS_GetAntenna(device, LMS_CH_RX, LimeCfg.channel)) <
0)
error();
cout << "Automatically selected RX LNA: " << antenna_index << ": "
<< antenna_list[antenna_index] << endl;
// manually select antenna
if (LMS_SetAntenna(device, LMS_CH_RX, 0, LMS_PATH_LNAL) != 0)
if (LMS_SetAntenna(device, LMS_CH_RX, LimeCfg.channel, LMS_PATH_LNAL) != 0)
error();
// get and print antenna index and name
if ((antenna_index = LMS_GetAntenna(device, LMS_CH_RX, 0)) < 0)
if ((antenna_index = LMS_GetAntenna(device, LMS_CH_RX, LimeCfg.channel)) <
0)
error();
cout << "Manually selected RX LNA: " << antenna_index << ": "
<< antenna_list[antenna_index] << endl;
@ -1026,8 +1046,8 @@ DC_Q << endl;
// select antenna port
// Alternatively, NULL can be passed to LMS_GetAntennaList() to obtain
// number of antennae
if ((num_antennas =
LMS_GetAntennaList(device, LMS_CH_TX, 0, antenna_list)) < 0)
if ((num_antennas = LMS_GetAntennaList(device, LMS_CH_TX, LimeCfg.channel,
antenna_list)) < 0)
error();
cout << "Available TX pathways:\n"; // print available antennae names
@ -1035,20 +1055,23 @@ DC_Q << endl;
cout << i << ": " << antenna_list[i] << endl;
// get and print print antenna index and name
if ((antenna_index = LMS_GetAntenna(device, LMS_CH_TX, 0)) < 0)
if ((antenna_index = LMS_GetAntenna(device, LMS_CH_TX, LimeCfg.channel)) <
0)
error();
cout << "Automatically selected TX pathway: " << antenna_index << ": "
<< antenna_list[antenna_index] << endl;
// manually select antenna
int mychoice = LMS_PATH_TX1;
int tx_path = LMS_PATH_TX1;
if (LimeCfg.frq > 1500e6)
mychoice = LMS_PATH_TX2;
if (LMS_SetAntenna(device, LMS_CH_TX, 0, mychoice) != 0)
tx_path = LMS_PATH_TX2;
if (LMS_SetAntenna(device, LMS_CH_TX, LimeCfg.channel, tx_path) != 0)
error();
// get and print print antenna index and name
if ((antenna_index = LMS_GetAntenna(device, LMS_CH_TX, 0)) < 0)
if ((antenna_index = LMS_GetAntenna(device, LMS_CH_TX, LimeCfg.channel)) <
0)
error();
cout << "Manually selected TX pathway: " << antenna_index << ": "
<< antenna_list[antenna_index] << endl;
@ -1058,6 +1081,11 @@ DC_Q << endl;
if (LMS_SetSampleRate(device, LimeCfg.srate, 1) != 0)
error();
// Invsinc, which removes that non-causal wiggle in timedomain
// if (LMS_WriteParam(device, LMS7_MAC, chn) != 0) error();
if (LMS_WriteParam(device, LMS7_MAC, LimeCfg.channel + 1) != 0)
error();
if (LMS_WriteParam(device, LMS7_ISINC_BYP_TXTSP, 1) != 0)
error();
// CMIX: Disable, as it is not used
@ -1076,9 +1104,9 @@ DC_Q << endl;
error();
// Set RX and TX to the gain values
if (LMS_SetGaindB(device, LMS_CH_TX, 0, LimeCfg.TX_gain) != 0)
if (LMS_SetGaindB(device, LMS_CH_TX, LimeCfg.channel, LimeCfg.TX_gain) != 0)
error();
if (LMS_SetGaindB(device, LMS_CH_RX, 0, LimeCfg.RX_gain) != 0)
if (LMS_SetGaindB(device, LMS_CH_RX, LimeCfg.channel, LimeCfg.RX_gain) != 0)
error();
cout << "After gain setting: " << endl;
@ -1126,16 +1154,16 @@ DC_Q << endl;
cout << "TX LPF bandwitdh range: " << range.min / 1e6 << " - "
<< range.max / 1e6 << " MHz\n\n";
if (LMS_SetLPFBW(device, LMS_CH_RX, 0, LimeCfg.RX_LPF) != 0)
if (LMS_SetLPFBW(device, LMS_CH_RX, LimeCfg.channel, LimeCfg.RX_LPF) != 0)
error();
if (LMS_SetLPFBW(device, LMS_CH_TX, 0, LimeCfg.TX_LPF) != 0)
if (LMS_SetLPFBW(device, LMS_CH_TX, LimeCfg.channel, LimeCfg.TX_LPF) != 0)
error();
float_type LPFBW; // lowpass bandwidth
if (LMS_GetLPFBW(device, LMS_CH_RX, 0, &LPFBW) != 0)
if (LMS_GetLPFBW(device, LMS_CH_RX, LimeCfg.channel, &LPFBW) != 0)
error();
cout << "RX LPFBW: " << LPFBW / 1e6 << " MHz" << endl;
if (LMS_GetLPFBW(device, LMS_CH_TX, 0, &LPFBW) != 0)
if (LMS_GetLPFBW(device, LMS_CH_TX, LimeCfg.channel, &LPFBW) != 0)
error();
cout << "TX LPFBW: " << LPFBW / 1e6 << " MHz" << endl;
@ -1189,7 +1217,7 @@ DC_Q << endl;
// All streams setups should be done before starting streams. New streams
// cannot be set-up if at least stream is running.
for (int ii = 0; ii < chCount; ++ii) {
rx_streams[ii].channel = ii; // channel number
rx_streams[ii].channel = LimeCfg.channel; // channel number
rx_streams[ii].fifoSize =
buffersize * N_buffers_per_fifo; // fifo size in samples
rx_streams[ii].throughputVsLatency =
@ -1200,7 +1228,7 @@ DC_Q << endl;
if (LMS_SetupStream(device, &rx_streams[ii]) != 0)
error();
tx_streams[ii].channel = ii; // channel number
tx_streams[ii].channel = LimeCfg.channel; // channel number
tx_streams[ii].fifoSize =
buffersize * N_buffers_per_fifo; // fifo size in samples
tx_streams[ii].throughputVsLatency =
@ -1768,7 +1796,6 @@ DC_Q << endl;
ii_TXrep++;
// in case the entire experiment fits within the TX FIFO
if (ii_TXrep == LimeCfg.repetitions) {
TXFIFO_slots = 0;
break;
}
}
@ -1783,7 +1810,6 @@ DC_Q << endl;
ii_TXrep++;
// in case the entire experiment fits within the TX FIFO
if (ii_TXrep == LimeCfg.repetitions) {
TXFIFO_slots = 0;
break;
}
}
@ -1794,14 +1820,14 @@ DC_Q << endl;
}
}
/*
// Check for the TX buffer and keep it filled
LMS_GetStreamStatus(tx_streams, &status); //Obtain TX stream stats
if (status.fifoFilledCount != 0) cout << TXFIFO_slots <<" TXFIFO slots free
before start: " << status.fifoFilledCount << " samples of " << status.fifoSize
<< " with HW stamp " << status.timestamp <<" at RX timestamp" <<
rx_metadata.timestamp << endl;
*/
LMS_GetStreamStatus(tx_streams, &status); // Obtain TX stream stats
if (status.fifoFilledCount != 0)
cout << TXFIFO_slots
<< " TXFIFO slots free before start: " << status.fifoFilledCount
<< " samples of " << status.fifoSize << " with HW stamp "
<< status.timestamp << " at RX timestamp" << rx_metadata.timestamp
<< endl;
// Main acquisition loop
while (ii_acq < LimeCfg.repetitions * LimeCfg.averages * num_phavar) {

3
src/limedriver.h
View file

@ -24,11 +24,12 @@
#include <direct.h> // _mkdir
#endif
#define VERSION "0.1.0"
#define VERSION "0.2.0"
struct LimeConfig_t {
float srate;
float channel;
float frq;
float frq_set;
float RX_LPF;