Modify function to init SERCOM and SPI settings #3
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Instead of having three different functions to init SERCOM ports, I created just one function which needs as parameters the SERCOM port (required) and SPI settings cpol and cpha (which are optional) but if you want, you can configure them by passsing 0 or 1 values which can be passed using macros such as SPI_CPOL_HIGH or SPI_CPOL_LOW to be more readable.
I modifed example SERCOM0 and it works as expected.