I'm currently trying to implement the MIPI RFFE (As master) protocol on a simple AVR microcontroller, the specs says that the clock frequency can go down to 32 kHz, so I guess this it should be possible to implement it this way. However it does not seem to work, in the figure below, a picture of the waveform is shown which seems to be matching the specification. Does anyone have any experience implementing RFFE on an MCU or some reference code?
Electronic – MIPI RFFE software implementation
antennaavrcprotocolRF
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Best Answer
I can see two problems:
If you are using the hardware SPI try changing the mode to 1.
If you are bitbanging the data follow this steps to build the bitbanging routine: