Multiple sources can be assigned the same device

[N5FPP]

While testing a previous bug I submitted. I noticed it is possible to add multiple source devices (R0, R1, etc.) and assign the same source device to all of them. This seems counter intuitive and should probably not be allowed - or at the very least a warning message saying the same device has been assigned to multiple sources.

If restricting assigning the same device to multiple devices is desired. I would recommend marking devices in the drop-down selection for other sampling devices as disabled depending if they have been previously assigned.

-Freeman, N5FPP

[f4exb]

I agree this is not foolproof assumption is that the user doesn't try to do odd things.

[f4exb]

The management of devices should be reworked in a better way. There are problems reported through other means than this board that multiple Rx or Tx (for now only LimeSDR) are not working properly. For example one cannot select the second Rx if the first is not already open.

This boils down to having a better enumeration of devices that can be more dynamic and which changes can be reported to appropriate listeners so that the actually available devices lists are updated.

[texasyojimbo]

My comment on Issue #86 probably is related to this discussion and should have been grouped here.

[f4exb]

More elaboration on this subject:

• Enumeration should be done and maintained (as plugins take and leave devices) in a single place as a singleton or attached to a singleton of the application
• Enumeration should take care of device channel enumeration (ex: one Lime has 2 Rx and 2 Tx channels). In the way the application is designed a device is in fact a channel of a physical device.
• The drop down list of devices and the checkbox need to be replaced by a dialog that will be filled at the dialog open time with the current list of available devices. The dialog is fired up with a push button (replacing the check button) or by clicking on the device text label. The "OK" button of the dialog will validate the change. Thus this is made dynamic and also is probably more intuitive. The identification of the device can be left as a text label in place of the drop down list. The dynamic dialog makes it more simple than using listeners on static widgets for the same or better functionality.

[f4exb]

Implemented in v3.8.0