Adafruit Grand Central M4 Express Board Support Crate

This crate provides a type-safe Rust API for working with the Adafruit Grand Central M4 Express board.

Board Features

• Microchip [ATSAMD51P] Cortex-M4 microcontroller @ 120 MHz (32-bit, 3.3V logic and power)
  • 1MB Flash
  • 256kB SRAM
  • 8MB SPI Flash chip

Prerequisites

• Install the cross compile toolchain rustup target add thumbv7em-none-eabihf
• Install cargo-hf2 the hf2 bootloader flasher tool however your platform requires

Uploading an example

Check out the repository for examples:

https://github.com/atsamd-rs/atsamd/tree/master/boards/grand_central_m4/examples

• Be in this directory cd boards/grand_central_m4
• Put your device in bootloader mode usually by hitting the reset button twice.
• Build and upload in one step

$ cargo hf2 --release --example blinky_basic
    Finished release [optimized + debuginfo] target(s) in 2m 02s
    Searching for a connected device with known vid/pid pair.
    Trying  Ok(Some("Adafruit Industries")) Ok(Some("Grand Central M4 Express"))
    Flashing "/path/to/atsamd/boards/grand_central_m4/target/thumbv7em-none-eabihf/release/examples/blinky_basic"
    Finished in 0.085s
$