[PATCH] osmo-trx[master]: uhd: Always specify samples-per-symbol for device lookup

[Tom Tsou]

Review at  https://gerrit.osmocom.org/3062

uhd: Always specify samples-per-symbol for device lookup

Fix MCBTS device setup where the map access was failing on the wrong
assumption that all devices support 1-SPS TX-RX operation. Some devices
and/or configurations such as LIMESDR and MCBTS only support running
at 4-SPS.

Even though certain settings (e.g. number of physical channels or the
FPGA clocking rate) are not dependent on the SPS value, we still need to
specify because we use SPS as a parameter for device classification.

Fixes: Bug #2341 "osmo-trx-m is broken"
Change-Id: I56e939285d585cc38efa6c329e30e3acebb734eb
Signed-off-by: Tom Tsou <tom.tsou at ettus.com>
---
M Transceiver52M/UHDDevice.cpp
1 file changed, 2 insertions(+), 2 deletions(-)


  git pull ssh://gerrit.osmocom.org:29418/osmo-trx refs/changes/62/3062/1

diff --git a/Transceiver52M/UHDDevice.cpp b/Transceiver52M/UHDDevice.cpp
index 833f02f..a766ddc 100644
--- a/Transceiver52M/UHDDevice.cpp
+++ b/Transceiver52M/UHDDevice.cpp
@@ -576,7 +576,7 @@
 		chans = 1;
 	}
 
-	if (chans > dev_param_map.at(dev_key(dev_type, 1, 1)).channels)
+	if (chans > dev_param_map.at(dev_key(dev_type, tx_sps, rx_sps)).channels)
 		throw std::invalid_argument("Device does not support number of requested channels");
 
 	std::string subdev_string;
@@ -1069,7 +1069,7 @@
 
 	/* Find center frequency between channels */
 	rf_spread = fabs(freqs[!chan] - freq);
-	if (rf_spread > dev_param_map.at(dev_key(B210, 1, 1)).mcr) {
+	if (rf_spread > dev_param_map.at(dev_key(B210, tx_sps, rx_sps)).mcr) {
 		LOG(ALERT) << rf_spread << "Hz tuning spread not supported\n";
 		return treq;
 	}

-- 
To view, visit https://gerrit.osmocom.org/3062
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Gerrit-MessageType: newchange
Gerrit-Change-Id: I56e939285d585cc38efa6c329e30e3acebb734eb
Gerrit-PatchSet: 1
Gerrit-Project: osmo-trx
Gerrit-Branch: master
Gerrit-Owner: Tom Tsou <tom at tsou.cc>