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Add RX/TX matching network configuration options

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Introduced configuration options for RX and TX matching networks in the
LimeDriver, enabling manual specification of the reception and
transmission paths. This change also includes default logic to maintain
previous behavior when new options are unset. Additionally, bumped the
version to 0.3.0 to reflect new feature addition. This enhancement
provides flexibility for advanced users to optimize signal chain
characteristics based on specific requirements.
This commit is contained in:
Kumi 2024-02-12 21:28:18 +01:00
parent 038ed21c6b
commit 2c7731e1d2
Signed by: kumi
GPG key ID: ECBCC9082395383F
2 changed files with 30 additions and 24 deletions
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46
src/limedriver.cpp
View file

@ -194,6 +194,8 @@ 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},
{"rmt", "RX Matching", H5::PredType::NATIVE_INT, &LimeCfg.RX_matching, 1},
{"tmt", "TX Matching", H5::PredType::NATIVE_INT, &LimeCfg.TX_matching, 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},
@ -400,6 +402,8 @@ LimeConfig_t initializeLimeConfig(int Npulses) {
LimeCfg.srate = 30.72e6; // sample rate of the IF DAC/ADC
LimeCfg.channel = 0; // channel to use,
LimeCfg.RX_matching = 0; // RX matching network - 0 to use previous logic
LimeCfg.TX_matching = 0; // TX matching network - 0 to use previous logic
LimeCfg.frq = 50e6; // LO carrier frequency
LimeCfg.RX_gain = 20; // total gain of the receiver
LimeCfg.TX_gain = 30; // total gain of the transmitter
@ -1025,23 +1029,24 @@ DC_Q << endl;
for (int i = 0; i < num_antennas; i++)
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, LimeCfg.channel)) <
0)
error();
cout << "Automatically selected RX LNA: " << antenna_index << ": "
<< antenna_list[antenna_index] << endl;
int rx_path;
if (LimeCfg.RX_matching == 0) {
rx_path = LMS_PATH_LNAL;
} else {
rx_path = LimeCfg.RX_matching;
}
// manually select antenna
if (LMS_SetAntenna(device, LMS_CH_RX, LimeCfg.channel, LMS_PATH_LNAL) != 0)
if (LMS_SetAntenna(device, LMS_CH_RX, LimeCfg.channel, rx_path) != 0)
error();
// get and print antenna index and name
if ((antenna_index = LMS_GetAntenna(device, LMS_CH_RX, LimeCfg.channel)) <
if ((rx_path = LMS_GetAntenna(device, LMS_CH_RX, LimeCfg.channel)) <
0)
error();
cout << "Manually selected RX LNA: " << antenna_index << ": "
<< antenna_list[antenna_index] << endl;
cout << "Manually selected RX LNA: " << rx_path << ": "
<< antenna_list[rx_path] << endl;
// select antenna port
// Alternatively, NULL can be passed to LMS_GetAntennaList() to obtain
@ -1054,27 +1059,26 @@ DC_Q << endl;
for (int i = 0; i < num_antennas; i++)
cout << i << ": " << antenna_list[i] << endl;
// get and print print antenna index and name
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;
// Select TX pathway
int tx_path;
// manually select antenna
int tx_path = LMS_PATH_TX1;
if (LimeCfg.TX_matching == 0) {
tx_path = LMS_PATH_TX1;
if (LimeCfg.frq > 1500e6)
tx_path = LMS_PATH_TX2;
} else {
tx_path = LimeCfg.TX_matching;
}
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, LimeCfg.channel)) <
if ((tx_path = LMS_GetAntenna(device, LMS_CH_TX, LimeCfg.channel)) <
0)
error();
cout << "Manually selected TX pathway: " << antenna_index << ": "
<< antenna_list[antenna_index] << endl;
cout << "Manually selected TX pathway: " << tx_path << ": "
<< antenna_list[tx_path] << endl;
// Set sample rate, w/o oversampling, so that we can remove the invsinc
// filter

4
src/limedriver.h
View file

@ -24,12 +24,14 @@
#include <direct.h> // _mkdir
#endif
#define VERSION "0.2.0"
#define VERSION "0.3.0"
struct LimeConfig_t {
float srate;
int channel;
int RX_matching;
int TX_matching;
float frq;
float frq_set;
float RX_LPF;