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By bradstew@fastmail.us
#200831
I have a Razor 9DoF with the ATSAM21 ARM M0 processor.
How do you set up the external serial port? I want to connect the GPS Mouse.
The M0 device has extra UART peripherals and I want to use the pins marked as Rx and Tx.
How do you do this?
All other examples use software UARTS.