Kernel SPI modules

To use the SPI bus be sure that the SPI driver module and the SPIDEV user space interface are enabled in the Linux Kernel configuration:

Device Drivers  --->
  [*] SPI support  ---> 
    <*>   Atmel SPI Controller 
    <*>   User mode SPI device driver support

Author: Sergio Tanzilli - tanzilli@acmesystems.it
System designer and CEO of Acme Systems srl
Web master of: https://www.acmesystems.it and http://www.tanzolab.it
Software developer on: https://github.com/tanzilli and https://github.com/acmesystemsss