From 963ccb9badab05d0f18d8306c0e9ece420e99fbd Mon Sep 17 00:00:00 2001
From: "Raymond.Knopp" <raymond.knopp@eurecom.fr>
Date: Thu, 17 Nov 2016 11:57:14 +0100
Subject: [PATCH] some changes for tx-gain setting
---
targets/ARCH/LMSSDR/USERSPACE/LIB/lms_lib.cpp | 21 ++++++-------------
.../CONF/enb.band7.tm1.lmssdr.conf | 2 +-
2 files changed, 7 insertions(+), 16 deletions(-)
diff --git a/targets/ARCH/LMSSDR/USERSPACE/LIB/lms_lib.cpp b/targets/ARCH/LMSSDR/USERSPACE/LIB/lms_lib.cpp
index c1e3cb81c1..3abcbbac5a 100644
--- a/targets/ARCH/LMSSDR/USERSPACE/LIB/lms_lib.cpp
+++ b/targets/ARCH/LMSSDR/USERSPACE/LIB/lms_lib.cpp
@@ -131,18 +131,8 @@ void set_rx_gain_offset(openair0_config_t *openair0_cfg, int chain_index) {
*/
int trx_lms_set_gains(openair0_device* device, openair0_config_t *openair0_cfg) {
- /* double gv = openair0_cfg[0].rx_gain[0] - openair0_cfg[0].rx_gain_offset[0];
-
- if (gv > 31) {
- printf("RX Gain 0 too high, reduce by %f dB\n",gv-31);
- gv = 31;
- }
- if (gv < 0) {
- printf("RX Gain 0 too low, increase by %f dB\n",-gv);
- gv = 0;
- }
- printf("[LMS] Setting 7002M G_PGA_RBB to %d\n", (uint16_t)gv);
- LMS_WriteParam(lms_device,LMS7param(G_PGA_RBB),(uint16_t)gv);*/
+ LMS_SetNormalizedGain(lms_device, LMS_CH_TX, 0, openair0_cfg[0].tx_gain[0]/100.0);
+ LMS_SetNormalizedGain(lms_device, LMS_CH_RX, 0, openair0_cfg[0].rx_gain[0]/openair0_cfg[0].rx_gain_offset[0]);
return(0);
}
@@ -209,10 +199,8 @@ int trx_lms_start(openair0_device *device){
LMS_SetAntenna(lms_device, LMS_CH_RX, 0, 3);
LMS_SetAntenna(lms_device, LMS_CH_TX, 0, 2);
- trx_lms_set_gains(device, device->openair0_cfg);
- /*LMS_SetNormalizedGain(lms_device, LMS_CH_TX, 0, 0.175);
- LMS_SetNormalizedGain(lms_device, LMS_CH_RX, 0, 0.65);*/
+
for (int i = 0; i< device->openair0_cfg->rx_num_channels; i++)
{
if (LMS_SetLPFBW(lms_device,LMS_CH_RX,i,device->openair0_cfg->rx_bw)!=0)
@@ -239,6 +227,9 @@ int trx_lms_start(openair0_device *device){
tx_stream.throughputVsLatency = 0.1;
tx_stream.dataFmt = lms_stream_t::LMS_FMT_I12;
tx_stream.isTx = true;
+
+ trx_lms_set_gains(device, device->openair0_cfg);
+
if (LMS_SetupStream(lms_device, &tx_stream)!=0)
printf("TX stream setup failed %s\n",LMS_GetLastErrorMessage());
diff --git a/targets/PROJECTS/GENERIC-LTE-EPC/CONF/enb.band7.tm1.lmssdr.conf b/targets/PROJECTS/GENERIC-LTE-EPC/CONF/enb.band7.tm1.lmssdr.conf
index b0ef9e0374..d912b1a102 100644
--- a/targets/PROJECTS/GENERIC-LTE-EPC/CONF/enb.band7.tm1.lmssdr.conf
+++ b/targets/PROJECTS/GENERIC-LTE-EPC/CONF/enb.band7.tm1.lmssdr.conf
@@ -39,7 +39,7 @@ eNBs =
nb_antennas_ports = 1;
nb_antennas_tx = 1;
nb_antennas_rx = 1;
- tx_gain = 60;
+ tx_gain = 100;
rx_gain = 111;
prach_root = 0;
prach_config_index = 0;
--
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