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RPi4 - pigs bscx SPI slave not working

I got it working by changing the ESP32 sending to 2 bytes. The examples from https://abyz.me.uk/rpi/pigpio/pigs.html#BSCX are working so the issue must be within the ESP32 sending. Important: BSC-MISO ...
karlo922's user avatar
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Using SPI0 on Raspberry Pi for 3 to 4 slaves

The kernel driver only supports 2 CS but in fact these are implemented in software (the hardware SPI CS are not used). It may be possible to write your own overlay. Alternatively you could use spi0-...
Milliways's user avatar
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