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Commit 1b3aec52 authored by Rohit Gupta's avatar Rohit Gupta
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LMSSDR doxygen comments integration

parent 0d88c9c4
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Showing with 56 additions and 478 deletions
targets/ARCH/LMSSDR/USERSPACE/LIB/lms_lib.cpp
View file @ 1b3aec52
......@@ -69,6 +69,15 @@ extern "C"
int write_output(const char *fname,const char *vname,void *data,int length,int dec,char format);
}
/*! \brief Called to send samples to the LMSSDR RF target
\param device pointer to the device structure specific to the RF hardware target
\param timestamp The timestamp at whicch the first sample MUST be sent
\param buff Buffer which holds the samples
\param nsamps number of samples to be sent
\param antenna_id index of the antenna
\param flags Ignored for the moment
\returns 0 on success
*/
int trx_lms_write(openair0_device *device, openair0_timestamp timestamp, void **buff, int nsamps, int antenna_id, int flags) {
LMS_TRxWrite((int16_t*)buff[0], nsamps,0, timestamp);
......@@ -76,7 +85,17 @@ int trx_lms_write(openair0_device *device, openair0_timestamp timestamp, void **
return nsamps;
}
/*! \brief Receive samples from hardware.
* Read \ref nsamps samples from each channel to buffers. buff[0] is the array for
* the first channel. *ptimestamp is the time at which the first sample
* was received.
* \param device the hardware to use
* \param[out] ptimestamp the time at which the first sample was received.
* \param[out] buff An array of pointers to buffers for received samples. The buffers must be large enough to hold the number of samples \ref nsamps.
* \param nsamps Number of samples. One sample is 2 byte I + 2 byte Q => 4 byte.
* \param antenna_id Index of antenna port
* \returns number of samples read
*/
int trx_lms_read(openair0_device *device, openair0_timestamp *ptimestamp, void **buff, int nsamps, int antenna_id) {
uint64_t timestamp;
......@@ -87,6 +106,11 @@ int trx_lms_read(openair0_device *device, openair0_timestamp *ptimestamp, void *
return ret;
}
/*! \brief set RX gain offset from calibration table
* \param openair0_cfg RF frontend parameters set by application
* \param chain_index RF chain ID
*/
void set_rx_gain_offset(openair0_config_t *openair0_cfg, int chain_index) {
int i=0;
......@@ -107,469 +131,12 @@ void set_rx_gain_offset(openair0_config_t *openair0_cfg, int chain_index) {
}
}
/*
void calibrate_rf(openair0_device *device) {
openair0_timestamp ptimestamp;
int16_t *calib_buffp,*calib_tx_buffp;
int16_t calib_buff[2*RXDCLENGTH];
int16_t calib_tx_buff[2*RXDCLENGTH];
int i,j;
int8_t offI,offQ,offIold,offQold,offInew,offQnew,offphase,offphaseold,offphasenew,offgain,offgainold,offgainnew;
int32_t meanI,meanQ,meanIold,meanQold;
int cnt=0,loop;
liblms7_status opStatus;
int16_t dcoffi;
int16_t dcoffq;
int16_t dccorri;
int16_t dccorrq;
const int16_t firCoefs[] =
{
-2531,
-517,
2708,
188,
-3059,
216,
3569,
-770,
-4199,
1541,
4886,
-2577,
-5552,
3909,
6108,
-5537,
-6457,
7440,
6507,
-9566,
-6174,
11845,
5391,
-14179,
-4110,
16457,
2310,
-18561,
0,
20369,
-2780,
-21752,
5963,
22610,
-9456,
-22859,
13127,
22444,
-16854,
-21319,
20489,
19492,
-23883,
-17002,
26881,
13902,
-29372,
-10313,
31226,
6345,
-32380,
-2141,
32767,
-2141,
-32380,
6345,
31226,
-10313,
-29372,
13902,
26881,
-17002,
-23883,
19492,
20489,
-21319,
-16854,
22444,
13127,
-22859,
-9456,
22610,
5963,
-21752,
-2780,
20369,
0,
-18561,
2310,
16457,
-4110,
-14179,
5391,
11845,
-6174,
-9566,
6507,
7440,
-6457,
-5537,
6108,
3909,
-5552,
-2577,
4886,
1541,
-4199,
-770,
3569,
216,
-3059,
188,
2708,
-517,
-2531
};
j=0;
for (i=0;i<RXDCLENGTH;i++) {
calib_tx_buff[j++] = cos_fsover8[i&7];
calib_tx_buff[j++] = cos_fsover8[(i+6)&7]; // sin
}
calib_buffp = &calib_buff[0];
calib_tx_buffp = &calib_tx_buff[0];
lms7->BackupAllRegisters();
uint8_t ch = (uint8_t)lms7->Get_SPI_Reg_bits(LMS7param(MAC));
//Stage 1
uint8_t sel_band1_trf = (uint8_t)lms7->Get_SPI_Reg_bits(LMS7param(SEL_BAND1_TRF));
uint8_t sel_band2_trf = (uint8_t)lms7->Get_SPI_Reg_bits(LMS7param(SEL_BAND2_TRF));
{
uint16_t requiredRegs[] = { 0x0400, 0x040A, 0x010D, 0x040C };
uint16_t requiredMask[] = { 0x6000, 0x3007, 0x0040, 0x00FF }; //CAPSEL, AGC_MODE, AGC_AVG, EN_DCOFF, Bypasses
uint16_t requiredValue[] = { 0x0000, 0x1007, 0x0040, 0x00BD };
lms7->Modify_SPI_Reg_mask(requiredRegs, requiredMask, requiredValue, 0, 3);
}
// opStatus = lms7->SetFrequencySX(LMS7002M::Rx, device->openair0_cfg[0].tx_freq[0]/1e6,30.72);
// put TX on fs/4
opStatus = lms7->CalibrateRxSetup(device->openair0_cfg[0].sample_rate/1e6);
if (opStatus != LIBLMS7_SUCCESS) {
printf("Cannot calibrate for %f MHz\n",device->openair0_cfg[0].sample_rate/1e6);
exit(-1);
}
// fill TX buffer with fs/8 complex sinusoid
offIold=offQold=64;
lms7->SetRxDCOFF(offIold,offQold);
LMS_RxStart();
for (i=0;i<NUMBUFF;i++)
trx_lms_read(device, &ptimestamp, (void **)&calib_buffp, RXDCLENGTH, 0);
for (meanIold=meanQold=i=j=0;i<RXDCLENGTH;i++) {
meanIold+=calib_buff[j++];
meanQold+=calib_buff[j++];
}
meanIold/=RXDCLENGTH;
meanQold/=RXDCLENGTH;
printf("[LMS] RX DC: (%d,%d) => (%d,%d)\n",offIold,offQold,meanIold,meanQold);
offI=offQ=-64;
lms7->SetRxDCOFF(offI,offQ);
for (i=0;i<NUMBUFF;i++)
trx_lms_read(device, &ptimestamp, (void **)&calib_buffp, RXDCLENGTH, 0);
for (meanI=meanQ=i=j=0;i<RXDCLENGTH;i++) {
meanI+=calib_buff[j++];
meanQ+=calib_buff[j++];
}
meanI/=RXDCLENGTH;
meanQ/=RXDCLENGTH;
printf("[LMS] RX DC: (%d,%d) => (%d,%d)\n",offI,offQ,meanI,meanQ);
while (cnt++ < 7) {
offInew=(offIold+offI)>>1;
offQnew=(offQold+offQ)>>1;
if (meanI*meanI < meanIold*meanIold) {
meanIold = meanI;
offIold = offI;
printf("[LMS] *** RX DC: offI %d => %d\n",offIold,meanI);
}
if (meanQ*meanQ < meanQold*meanQold) {
meanQold = meanQ;
offQold = offQ;
printf("[LMS] *** RX DC: offQ %d => %d\n",offQold,meanQ);
}
offI = offInew;
offQ = offQnew;
lms7->SetRxDCOFF(offI,offQ);
for (i=0;i<NUMBUFF;i++)
trx_lms_read(device, &ptimestamp, (void **)&calib_buffp, RXDCLENGTH, 0);
for (meanI=meanQ=i=j=0;i<RXDCLENGTH;i++) {
meanI+=calib_buff[j++];
meanQ+=calib_buff[j++];
}
meanI/=RXDCLENGTH;
meanQ/=RXDCLENGTH;
printf("[LMS] RX DC: (%d,%d) => (%d,%d)\n",offI,offQ,meanI,meanQ);
}
if (meanI*meanI < meanIold*meanIold) {
meanIold = meanI;
offIold = offI;
printf("[LMS] *** RX DC: offI %d => %d\n",offIold,meanI);
}
if (meanQ*meanQ < meanQold*meanQold) {
meanQold = meanQ;
offQold = offQ;
printf("[LMS] *** RX DC: offQ %d => %d\n",offQold,meanQ);
}
printf("[LMS] RX DC: (%d,%d) => (%d,%d)\n",offIold,offQold,meanIold,meanQold);
lms7->SetRxDCOFF(offIold,offQold);
dcoffi = offIold;
dcoffq = offQold;
lms7->Modify_SPI_Reg_bits(LMS7param(MAC), ch);
lms7->Modify_SPI_Reg_bits(LMS7param(AGC_MODE_RXTSP), 1);
lms7->Modify_SPI_Reg_bits(LMS7param(CAPSEL), 0);
// TX LO leakage
offQold=offIold=127;
lms7->SPI_write(0x0204,(((int16_t)offIold)<<7)|offQold);
{
uint16_t requiredRegs[] = { 0x0400, 0x040A, 0x010D, 0x040C };
uint16_t requiredMask[] = { 0x6000, 0x3007, 0x0040, 0x00FF }; //CAPSEL, AGC_MODE, AGC_AVG, EN_DCOFF, Bypasses
uint16_t requiredValue[] = { 0x0000, 0x1007, 0x0040, 0x00BD };
lms7->Modify_SPI_Reg_mask(requiredRegs, requiredMask, requiredValue, 0, 3);
}
sel_band1_trf = (uint8_t)lms7->Get_SPI_Reg_bits(LMS7param(SEL_BAND1_TRF));
sel_band2_trf = (uint8_t)lms7->Get_SPI_Reg_bits(LMS7param(SEL_BAND2_TRF));
//B
lms7->Modify_SPI_Reg_bits(0x0100, 0, 0, 1); //EN_G_TRF 1
if (sel_band1_trf == 1)
{
lms7->Modify_SPI_Reg_bits(LMS7param(PD_RLOOPB_1_RFE), 0); //PD_RLOOPB_1_RFE 0
lms7->Modify_SPI_Reg_bits(LMS7param(EN_INSHSW_LB1_RFE), 0); //EN_INSHSW_LB1 0
}
if (sel_band2_trf == 1)
{
lms7->Modify_SPI_Reg_bits(LMS7param(PD_RLOOPB_2_RFE), 0); //PD_RLOOPB_2_RFE 0
lms7->Modify_SPI_Reg_bits(LMS7param(EN_INSHSW_LB2_RFE), 0); // EN_INSHSW_LB2 0
}
// FixRXSaturation();
lms7->Modify_SPI_Reg_bits(LMS7param(GFIR3_BYP_RXTSP), 0); //GFIR3_BYP 0
lms7->Modify_SPI_Reg_bits(LMS7param(HBD_OVR_RXTSP), 2);
lms7->Modify_SPI_Reg_bits(LMS7param(GFIR3_L_RXTSP), 7);
lms7->Modify_SPI_Reg_bits(LMS7param(GFIR3_N_RXTSP), 7);
lms7->SetGFIRCoefficients(LMS7002M::Rx, 2, firCoefs, sizeof(firCoefs) / sizeof(int16_t));
for (i=0;i<NUMBUFF;i++) {
trx_lms_read(device, &ptimestamp, (void **)&calib_buffp, RXDCLENGTH, 0);
trx_lms_write(device,ptimestamp+5*RXDCLENGTH, (void **)&calib_tx_buffp, RXDCLENGTH, 0, 0);
}
write_output("calibrx.m","rxs",calib_buffp,RXDCLENGTH,1,1);
exit(-1);
for (meanIold=meanQold=i=j=0;i<RXDCLENGTH;i++) {
switch (i&3) {
case 0:
meanIold+=calib_buff[j++];
break;
case 1:
meanQold+=calib_buff[j++];
break;
case 2:
meanIold-=calib_buff[j++];
break;
case 3:
meanQold-=calib_buff[j++];
break;
}
}
// meanIold/=RXDCLENGTH;
// meanQold/=RXDCLENGTH;
printf("[LMS] TX DC (offI): %d => (%d,%d)\n",offIold,meanIold,meanQold);
offI=-128;
lms7->SPI_write(0x0204,(((int16_t)offI)<<7)|offQold);
for (i=0;i<NUMBUFF;i++) {
trx_lms_read(device, &ptimestamp, (void **)&calib_buffp, RXDCLENGTH, 0);
trx_lms_write(device,ptimestamp+5*RXDCLENGTH, (void **)&calib_tx_buffp, RXDCLENGTH, 0, 0);
}
for (meanI=meanQ=i=j=0;i<RXDCLENGTH;i++) {
switch (i&3) {
case 0:
meanI+=calib_buff[j++];
break;
case 1:
meanQ+=calib_buff[j++];
break;
case 2:
meanI-=calib_buff[j++];
break;
case 3:
meanQ-=calib_buff[j++];
break;
}
}
// meanI/=RXDCLENGTH;
// meanQ/=RXDCLENGTH;
printf("[LMS] TX DC (offI): %d => (%d,%d)\n",offI,meanI,meanQ);
cnt = 0;
while (cnt++ < 8) {
offInew=(offIold+offI)>>1;
if (meanI*meanI+meanQ*meanQ < meanIold*meanIold +meanQold*meanQold) {
printf("[LMS] TX DC (offI): ([%d,%d]) => %d : %d\n",offIold,offI,offInew,meanI*meanI+meanQ*meanQ);
meanIold = meanI;
meanQold = meanQ;
offIold = offI;
}
offI = offInew;
lms7->SPI_write(0x0204,(((int16_t)offI)<<7)|offQold);
for (i=0;i<NUMBUFF;i++) {
trx_lms_read(device, &ptimestamp, (void **)&calib_buffp, RXDCLENGTH, 0);
trx_lms_write(device,ptimestamp+5*RXDCLENGTH, (void **)&calib_tx_buffp, RXDCLENGTH, 0, 0);
}
for (meanI=meanQ=i=j=0;i<RXDCLENGTH;i++) {
switch (i&3) {
case 0:
meanI+=calib_buff[j++];
break;
case 1:
meanQ+=calib_buff[j++];
break;
case 2:
meanI-=calib_buff[j++];
break;
case 3:
meanQ-=calib_buff[j++];
break;
}
}
// meanI/=RXDCLENGTH;
// meanQ/=RXDCLENGTH;
// printf("[LMS] TX DC (offI): %d => (%d,%d)\n",offI,meanI,meanQ);
}
if (meanI*meanI+meanQ*meanQ < meanIold*meanIold +meanQold*meanQold) {
printf("[LMS] TX DC (offI): ([%d,%d]) => %d : %d\n",offIold,offI,offInew,meanI*meanI+meanQ*meanQ);
meanIold = meanI;
meanQold = meanQ;
offIold = offI;
}
offQ=-128;
lms7->SPI_write(0x0204,(((int16_t)offIold)<<7)|offQ);
for (i=0;i<NUMBUFF;i++) {
trx_lms_read(device, &ptimestamp, (void **)&calib_buffp, RXDCLENGTH, 0);
trx_lms_write(device,ptimestamp+5*RXDCLENGTH, (void **)&calib_tx_buffp, RXDCLENGTH, 0, 0);
}
for (meanI=meanQ=i=j=0;i<RXDCLENGTH;i++) {
switch (i&3) {
case 0:
meanI+=calib_buff[j++];
break;
case 1:
meanQ+=calib_buff[j++];
break;
case 2:
meanI-=calib_buff[j++];
break;
case 3:
meanQ-=calib_buff[j++];
break;
}
}
// meanI/=RXDCLENGTH;
// meanQ/=RXDCLENGTH;
printf("[LMS] TX DC (offQ): %d => (%d,%d)\n",offQ,meanI,meanQ);
cnt=0;
while (cnt++ < 8) {
offQnew=(offQold+offQ)>>1;
if (meanI*meanI+meanQ*meanQ < meanIold*meanIold +meanQold*meanQold) {
printf("[LMS] TX DC (offQ): ([%d,%d]) => %d : %d\n",offQold,offQ,offQnew,meanI*meanI+meanQ*meanQ);
meanIold = meanI;
meanQold = meanQ;
offQold = offQ;
}
offQ = offQnew;
lms7->SPI_write(0x0204,(((int16_t)offIold)<<7)|offQ);
for (i=0;i<NUMBUFF;i++) {
trx_lms_read(device, &ptimestamp, (void **)&calib_buffp, RXDCLENGTH, 0);
trx_lms_write(device,ptimestamp+5*RXDCLENGTH, (void **)&calib_tx_buffp, RXDCLENGTH, 0, 0);
}
for (meanI=meanQ=i=j=0;i<RXDCLENGTH;i++) {
switch (i&3) {
case 0:
meanI+=calib_buff[j++];
break;
case 1:
meanQ+=calib_buff[j++];
break;
case 2:
meanI-=calib_buff[j++];
break;
case 3:
meanQ-=calib_buff[j++];
break;
}
}
// meanI/=RXDCLENGTH;
// meanQ/=RXDCLENGTH;
// printf("[LMS] TX DC (offQ): %d => (%d,%d)\n",offQ,meanI,meanQ);
}
LMS_RxStop();
printf("[LMS] TX DC: (%d,%d) => (%d,%d)\n",offIold,offQold,meanIold,meanQold);
dccorri = offIold;
dccorrq = offQold;
lms7->RestoreAllRegisters();
lms7->Modify_SPI_Reg_bits(LMS7param(MAC), ch);
lms7->Modify_SPI_Reg_bits(LMS7param(DCOFFI_RFE), dcoffi);
lms7->Modify_SPI_Reg_bits(LMS7param(DCOFFQ_RFE), dcoffq);
lms7->Modify_SPI_Reg_bits(LMS7param(DCCORRI_TXTSP), dccorri);
lms7->Modify_SPI_Reg_bits(LMS7param(DCCORRQ_TXTSP), dccorrq);
// lms7->Modify_SPI_Reg_bits(LMS7param(GCORRI_TXTSP), gcorri);
// lms7->Modify_SPI_Reg_bits(LMS7param(GCORRQ_TXTSP), gcorrq);
// lms7->Modify_SPI_Reg_bits(LMS7param(IQCORR_TXTSP), iqcorr);
// lms7->Modify_SPI_Reg_bits(LMS7param(DC_BYP_TXTSP), 0); //DC_BYP
lms7->Modify_SPI_Reg_bits(0x0208, 1, 0, 0); //GC_BYP PH_BYP
}
*/
/*! \brief Set Gains (TX/RX) on LMSSDR
* \param device the hardware to use
* \param openair0_cfg openair0 Config structure
* \returns 0 in success
*/
int trx_lms_set_gains(openair0_device* device, openair0_config_t *openair0_cfg) {
......@@ -589,6 +156,10 @@ int trx_lms_set_gains(openair0_device* device, openair0_config_t *openair0_cfg)
return(0);
}
/*! \brief Start LMSSDR
* \param device the hardware to use
* \returns 0 on success
*/
int trx_lms_start(openair0_device *device){
......@@ -746,7 +317,10 @@ int trx_lms_start(openair0_device *device){
return 0;
}
/*! \brief Stop LMSSDR
* \param card Index of the RF card to use
* \returns 0 on success
*/
int trx_lms_stop(int card) {
/*
LMS_DeviceClose(usbport);
......@@ -756,6 +330,12 @@ int trx_lms_stop(int card) {
*/
}
/*! \brief Set frequencies (TX/RX)
* \param device the hardware to use
* \param openair0_cfg openair0 Config structure (ignored. It is there to comply with RF common API)
* \param exmimo_dump_config (ignored)
* \returns 0 in success
*/
int trx_lms_set_freq(openair0_device* device, openair0_config_t *openair0_cfg,int exmimo_dump_config) {
//Control port must be connected
......@@ -768,6 +348,7 @@ int trx_lms_set_freq(openair0_device* device, openair0_config_t *openair0_cfg,in
}
// 31 = 19 dB => 105 dB total gain @ 2.6 GHz
/*! \brief calibration table for LMSSDR */
rx_gain_calib_table_t calib_table_sodera[] = {
{3500000000.0,70.0},
{2660000000.0,80.0},
......@@ -780,33 +361,30 @@ rx_gain_calib_table_t calib_table_sodera[] = {
/*! \brief Get LMSSDR Statistics
* \param device the hardware to use
* \returns 0 in success
*/
int trx_lms_get_stats(openair0_device* device) {
return(0);
}
/*! \brief Reset LMSSDR Statistics
* \param device the hardware to use
* \returns 0 in success
*/
int trx_lms_reset_stats(openair0_device* device) {
return(0);
}
int openair0_set_gains(openair0_device* device,
openair0_config_t *openair0_cfg) {
return(0);
}
int openair0_set_frequencies(openair0_device* device, openair0_config_t *openair0_cfg, int dummy) {
return(0);
}
/*! \brief Terminate operation of the LMSSDR transceiver -- free all associated resources
* \param device the hardware to use
*/
void trx_lms_end(openair0_device *device) {
......
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