Uart Python SDK Example DD

[Alejandro-Dev]

I am trying to run the python UART example on a DD with a loopback between pins 24 and 25. I am using almost the same code from the example except that I am opening the first available device instead of the AD with configuration.

print("Opening first device")
dwf.FDwfDeviceOpen(c_int(-1), byref(hdwf))
# device configuration of index 3 (4th) for Analog Discovery has 16kS digital-in/out buffer
# dwf.FDwfDeviceConfigOpen(c_int(-1), c_int(0), byref(hdwf)) 

Are the DIO for pins 24 and 25 selected correctly? I am doing the following as in the example:

dwf.FDwfDigitalUartTxSet(hdwf, c_int(0)) # TX = DIO-0
dwf.FDwfDigitalUartRxSet(hdwf, c_int(1)) # RX = DIO-1

I am not getting any readings on the terminal though. Are there any obvious reasons? Am I missing something?

Opening first device
Configuring UART...
Sending on TX for 10 seconds...
Receiving on RX...

Thanks,

Alejandro

[attila]

Hi @Alejandro-Dev

Yes, indices 0/1 on Digital Discovery are DIO-24/25

Edited June 23, 2021 by attila

[Alejandro-Dev]

It somehow worked today after rebooting my computer, same code, same wiring, not sure what the issue was.

[attila]

Hi @Alejandro-Dev

The wiring may have been loose, contact issue...

Edited June 24, 2021 by attila