pespin has uploaded this change for review. (
https://gerrit.osmocom.org/c/osmo-trx/+/16878 )
Change subject: lms: Initial multi-arfcn support
......................................................................
lms: Initial multi-arfcn support
With current state multi-arfcn can be used (eg. I can place a call
between 2 phones using TRX1 and sustain for as long as wanted), but from
time to time (around every 20seconds), a burst of Tx packed dropped
events from LimeSuite appears.
LimeNet-micro coefficients have yet not been tested.
Change-Id: I7e67d90a8126546eeeeba376f816ec5d158d4712
---
M Transceiver52M/device/lms/LMSDevice.cpp
1 file changed, 17 insertions(+), 7 deletions(-)
git pull ssh://gerrit.osmocom.org:29418/osmo-trx refs/changes/78/16878/1
diff --git a/Transceiver52M/device/lms/LMSDevice.cpp
b/Transceiver52M/device/lms/LMSDevice.cpp
index d9cc371..7d67158 100644
--- a/Transceiver52M/device/lms/LMSDevice.cpp
+++ b/Transceiver52M/device/lms/LMSDevice.cpp
@@ -68,17 +68,21 @@
double max_tx_gain;
/* Sample rate coef (without having TX/RX samples per symbol into
account) */
double rate;
+ /* Sample rate coef (without having TX/RX samples per symbol into
account), if multi-arfcn is enabled */
+ double rate_multiarfcn;
/* Coefficient multiplied by TX sample rate in order to shift Tx time */
double ts_offset_coef;
+ /* Coefficient multiplied by TX sample rate in order to shift Tx time,
if multi-arfcn is enabled */
+ double ts_offset_coef_multiarfcn;
/* Device Name Prefix as presented by LimeSuite API LMS_GetDeviceInfo()
*/
std::string name_prefix;
};
static const std::map<enum lms_dev_type, struct dev_desc> dev_param_map {
- { LMS_DEV_SDR_USB, { true, true, 73.0, GSMRATE, 8.9e-5,
LMS_DEV_SDR_USB_PREFIX_NAME } },
- { LMS_DEV_SDR_MINI, { false, true, 66.0, GSMRATE, 8.9e-5,
LMS_DEV_SDR_MINI_PREFIX_NAME } },
- { LMS_DEV_NET_MICRO, { true, false, 71.0, GSMRATE, 8.9e-5,
LMS_DEV_NET_MICRO_PREFIX_NAME } },
- { LMS_DEV_UNKNOWN, { true, true, 73.0, GSMRATE, 8.9e-5, "UNKNOWN" }
},
+ { LMS_DEV_SDR_USB, { true, true, 73.0, GSMRATE, MCBTS_SPACING,
8.9e-5, 7.9e-5, LMS_DEV_SDR_USB_PREFIX_NAME } },
+ { LMS_DEV_SDR_MINI, { false, true, 66.0, GSMRATE, MCBTS_SPACING,
8.9e-5, 8.2e-5, LMS_DEV_SDR_MINI_PREFIX_NAME } },
+ { LMS_DEV_NET_MICRO, { true, false, 71.0, GSMRATE, MCBTS_SPACING,
8.9e-5, 7.9e-5, LMS_DEV_NET_MICRO_PREFIX_NAME } },
+ { LMS_DEV_UNKNOWN, { true, true, 73.0, GSMRATE, MCBTS_SPACING,
8.9e-5, 7.9e-5, "UNKNOWN" } },
};
static enum lms_dev_type parse_dev_type(lms_device_t *m_lms_dev)
@@ -294,7 +298,10 @@
goto out_close;
print_range("Sample Rate", &range_sr);
- sr_host = dev_desc.rate * tx_sps;
+ if (iface == MULTI_ARFCN)
+ sr_host = dev_desc.rate_multiarfcn * tx_sps;
+ else
+ sr_host = dev_desc.rate * tx_sps;
LOGC(DDEV, INFO) << "Setting sample rate to " << sr_host << " " <<
tx_sps;
if (LMS_SetSampleRate(m_lms_dev, sr_host, 32) < 0)
goto out_close;
@@ -303,7 +310,10 @@
goto out_close;
LOGC(DDEV, INFO) << "Sample Rate: Host=" << sr_host << " RF=" << sr_rf;
- ts_offset = static_cast<TIMESTAMP>(dev_desc.ts_offset_coef * sr_host);
+ if (iface == MULTI_ARFCN)
+ ts_offset =
static_cast<TIMESTAMP>(dev_desc.ts_offset_coef_multiarfcn * sr_host);
+ else
+ ts_offset = static_cast<TIMESTAMP>(dev_desc.ts_offset_coef *
sr_host);
/* configure antennas */
if (!set_antennas()) {
@@ -311,7 +321,7 @@
goto out_close;
}
- return NORMAL;
+ return iface == MULTI_ARFCN ? MULTI_ARFCN : NORMAL;
out_close:
LOGC(DDEV, FATAL) << "Error in LMS open, closing: " <<
LMS_GetLastErrorMessage();
--
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Gerrit-Project: osmo-trx
Gerrit-Branch: master
Gerrit-Change-Id: I7e67d90a8126546eeeeba376f816ec5d158d4712
Gerrit-Change-Number: 16878
Gerrit-PatchSet: 1
Gerrit-Owner: pespin <pes...@sysmocom.de>
Gerrit-MessageType: newchange
