ls372: Agent does not enable modifying the heater input channel

[ngalitzki]

For PID control one needs to designate a channel as the input to the PID.

I believe this functionality exists in the agent:
https://github.com/simonsobs/socs/blob/main/socs/Lakeshore/Lakeshore372.py

set_pid does not take an input channel designation in the agent or on ocs web. Request adding set_input_channel or similar on OCS web to facilitate easy adjustment of the parameter.

[BrianJKoopman]

Thanks for the feature request. The option isn't in OCS web at all because it's not in the Agent yet either -- though as you point out is available in the driver code, via Heater.set_input_channel().

The most straightforward thing would be to add a task, set_input_channel, to the agent -- similar to set_heater_range -- that takes a 'heater' and 'channel' for arguments.

Once this is done, the task's panel can be updated in ocs-web to allow inputs.

In the meantime, I assume the driver code was used to change this in the field? (Or it was otherwise manually configured?)