If you don't use the SPI dedicated pins, then you might be interested by this thread, reply #1:
https://forum.arduino.cc/index.php?topic=491672.0
Usually when an SPI communication doesn't work, this is due to a wrong CPOL/NCPHA configuration.
If you don't use the SPI dedicated pins, then you might be interested by this thread, reply #1:
https://forum.arduino.cc/index.php?topic=491672.0
Usually when an SPI communication doesn't work, this is due to a wrong CPOL/NCPHA configuration.