Feature request: Add 0-5V range for MIO168 AO3+4

[danielbriggs]

As mentioned on the discord server:
Feature request:
It would be excellent if there could be another selectable range on the MIO168 board for analog outputs 3+4 (which I believe are currently only 0-10V output) to enable a 0-5V range.

Even if this range is physically limited to 12/16-bit 0-10V in hardware, having a software locked 0-5V at this half range bit depth would be extremely useful. i.e. not true 12/16-bit 0-5V is absolutely fine for me.

Thanks again,
Dan

[fietser28]

Not just 10V/5V, but analog to DCP/DCM a generic LIMIT implementation in software would be the way to go I think.

Meaning:

• make 'volt:limit' work on analog outputs just as on DCP/DCM?
• Have UI buttons on the analog outputs screen of MIO168 to set the limits.
• If the output range of the channels is changed the limit is adjusted to min (current limit, max of new range)
• If the output type is toggled between current and voltage the limit is removed
• Should there also be a minimum (use case: avoid negative voltages)?