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ExMIMO2 RX gain calibration

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This commit is contained in:
Raymond Knopp
2016-06-27 00:58:54 -07:00
parent 1992271589
commit 456572c9ad
1 changed files with 29 additions and 1 deletions
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targets/ARCH/EXMIMO/USERSPACE/LIB/openair0_lib.c
+29 -1
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@@ -670,6 +670,13 @@ int device_init(openair0_device *device, openair0_config_t *openair0_cfg) {
return(0); return(0);
} }
unsigned int rxg_max[4] = {128,128,128,126};
unsigned int rxg_med[4] = {122,123,123,120};
unsigned int rxg_byp[4] = {116,117,116,116};
unsigned int nf_max[4] = {7,9,16,12};
unsigned int nf_med[4] = {12,13,22,17};
unsigned int nf_byp[4] = {15,20,29,23};
int openair0_config(openair0_config_t *openair0_cfg, int UE_flag) int openair0_config(openair0_config_t *openair0_cfg, int UE_flag)
{ {
int ret; int ret;
@@ -760,21 +767,42 @@ int openair0_config(openair0_config_t *openair0_cfg, int UE_flag)
p_exmimo_config->rf.rf_mode[ant] += (RXEN + DMAMODE_RX + RXLPFNORM + RXLPFEN + rx_filter); p_exmimo_config->rf.rf_mode[ant] += (RXEN + DMAMODE_RX + RXLPFNORM + RXLPFEN + rx_filter);
p_exmimo_config->rf.rf_freq_rx[ant] = (unsigned int)openair0_cfg[card].rx_freq[ant]; p_exmimo_config->rf.rf_freq_rx[ant] = (unsigned int)openair0_cfg[card].rx_freq[ant];
p_exmimo_config->rf.rx_gain[ant][0] = (unsigned int)openair0_cfg[card].rx_gain[ant];
printf("openair0 : programming card %d RX antenna %d (freq %u, gain %d)\n",card,ant,p_exmimo_config->rf.rf_freq_rx[ant],p_exmimo_config->rf.rx_gain[ant][0]); printf("openair0 : programming card %d RX antenna %d (freq %u, gain %d)\n",card,ant,p_exmimo_config->rf.rf_freq_rx[ant],p_exmimo_config->rf.rx_gain[ant][0]);
switch (openair0_cfg[card].rxg_mode[ant]) { switch (openair0_cfg[card].rxg_mode[ant]) {
default: default:
case max_gain: case max_gain:
p_exmimo_config->rf.rf_mode[ant] += LNAMax; p_exmimo_config->rf.rf_mode[ant] += LNAMax;
if (rxg_max[ant] >= (int)openair0_cfg[card].rx_gain[ant]) {
p_exmimo_config->rf.rx_gain[ant][0] = 30 - (rxg_max[ant] - (int)openair0_cfg[card].rx_gain[ant]); //was measured at rxgain=30;
}
else {
printf("openair0: RX RF gain too high, reduce by %d dB\n", (int)openair0_cfg[card].rx_gain[ant]-rxg_max[ant]);
exit(-1);
}
break; break;
case med_gain: case med_gain:
p_exmimo_config->rf.rf_mode[ant] += LNAMed; p_exmimo_config->rf.rf_mode[ant] += LNAMed;
if (rxg_med[ant] >= (int)openair0_cfg[card].rx_gain[ant]) {
p_exmimo_config->rf.rx_gain[ant][0] = 30 - (rxg_med[ant] - (int)openair0_cfg[card].rx_gain[ant]); //was measured at rxgain=30;
}
else {
printf("openair0: RX RF gain too high, reduce by %d dB\n", (int)openair0_cfg[card].rx_gain[ant]-rxg_med[ant]);
exit(-1);
}
break; break;
case byp_gain: case byp_gain:
p_exmimo_config->rf.rf_mode[ant] += LNAByp; p_exmimo_config->rf.rf_mode[ant] += LNAByp;
if (rxg_byp[ant] >= (int)openair0_cfg[card].rx_gain[ant]) {
p_exmimo_config->rf.rx_gain[ant][0] = 30 - (rxg_byp[ant] - (int)openair0_cfg[card].rx_gain[ant]); //was measured at rxgain=30;
}
else {
printf("openair0: RX RF gain too high, reduce by %d dB\n", (int)openair0_cfg[card].rx_gain[ant]-rxg_byp[ant]);
exit(-1);
}
break; break;
} }
} else { } else {