Configuring the system clock sources.
You will typically need to create an instance of
Working with GPIO pins.
The pins are associated with the PORT hardware. This module
NeoTrellis M4 Express pins
Import the prelude to gain convenient access to helper traits
Working with the SERCOM peripherals.
Working with timer counter hardware
NeoTrellis M4 Express 8x4 keypad
Number of Neopixels on the device
Convenience for setting up the labelled SDA, SCL pins to operate as an I2C master running at the specified frequency.
Convenience for setting up the labelled SDA, SCL pins in the STEMMA JST connector to operate as a UART device at the specified baud rate.