tree 69983f7894661da4b6f79d65986640324ec775b6
parent 08dfe237c83a37440da00cb75e2882f21feaf18f
author Pau Espin Pedrol <pespin@sysmocom.de> 1541093412 +0100
committer Pau Espin Pedrol <pespin@sysmocom.de> 1542624457 +0100

UHDDevice: setRxGain on chan 0 when using multi-arfcn

When using multi-arfcn feature, several logical channels (arfcn) are multiplxed
into one physical transceiver, as can be seen in
uhd_device::set_channels.

As a result, when multi-arfcn is enabled some properties are actually
shared for those logical channels, and internally mapped to the first
(only existing) channel, and per-channel internal array variables are allocated
accordingly (size() == 1).

When setting RxGain, we need to set the correct existing physical
channel. Same check is done in getRxGain, and then we apply the RxGain correctly and
we avoid outputing an error "Requested non-existent channel" immediatelly after.

Change-Id: I5b02bb1ef6450dc48be7b8058d96a5691847d3cc