Raw MMIO

Most microcontrollers access peripherals via memory-mapped IO. Let's try turning on an LED on our micro:bit:

# // Copyright 2023 Google LLC
# // SPDX-License-Identifier: Apache-2.0
#
{{#include examples/src/bin/mmio.rs:Example}}

• GPIO 0 pin 21 is connected to the first column of the LED matrix, and pin 28 to the first row.

Run the example with:

cargo embed --bin mmio