Si4432 GPIO pins

[radio-satellites]

Hello,

To transmit AFSK with the Si4432, which of the GPIOs (0,1,2) do I need to connect to the microcontroller? The examples only list "GPIO."

--Sasha

[jgromes]

Hmm, good question - it's been a while since I last used that module. Looking into the source, Si443x::directMode sets GPIO1 as clock output and GPIO2 as data input, so I think GPIO2.

[radio-satellites]

Thanks! :)

[radio-satellites]

One more question @jgromes: the Si4432 has programmable loading capacitors. Does radiolib support programming these? If not, what is the default that it's left at? How should I go about connecting a crystal to it?

[jgromes]

This feature is not implemented in RadioLib, so you should consult the datasheet on that.

However, even though this is not implemented in RadioLib at the moment, you can use God mode (or the slightly less intrusive Low-level access mode) to gain direct access to the SPI registers from your user program.