RFM22 in AFSK morse

[lw2dtz]

Hi,

I am testing your MORSE example in AFSK. Although I configure the audio output in the controller (Atmega328p
@8MHz ) and see it on the oscilloscope it is not clear where to connect on the RFM22. I guess, it must be on some
general purpose pin ?

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[jgromes]

AFSK isn't fully supported on Si443x/RFM22 yet, because I wasn't able to find any module that had the GPIO pins connected to some pin header, so I couldn't test. In theory, you should connect the pin to GPIO2.

[lw2dtz]

In practice it is the GPIO_0. It would be nice to add a txdelay and a txtail. I got this ..

IM.mp4

[jgromes]

It really should be configured for GPIO2. I just tested it and found an issue with incorrect modulation being set, it should be fixed now.