SAM SPI Unit Test

See here for project documentation.This unit test carries out tests for SERCOM SPI driver.

It consists of test cases for the following functionalities:

• Test for driver initialization.
• Test for single byte write and read by polling.
• Test for buffer write by polling and read with interrupt.
• Test for buffer read & write using transceive function.
• Test for 9-bit data transfer.
• Test for baudrate.