README.md

RaspberryPi Pico RP2 flash algorithm

This is a flash algorithm for the RP2040 and RP2350 chips, used in the Raspberry Pi Pico board. It implements the CMSIS-Pack ABI, so it's compatible with any tools that use it, including probe-rs.

Dependencies

Run the following to install the requirements:

cargo install cargo-binutils

The rust-toolchain file will get you the targets and components you need.

Building

Just run build.sh. It spits out the flash algo in the probe-rs YAML format:

flash-algo$ ./build.sh 
    instructions: sLUUIACIGUoBRguI...wRwAgcEc=
    pc_init: 0x00000000
    pc_uninit: 0x0000007c
    pc_program_page: 0x00000088
    pc_erase_sector: 0x00000084
    pc_erase_all: 0x00000080

Hacking

The algo module contains the FlashAlgo trait, and an algo! macro to generate the glue functions for a given struct implementing it. This is generic for all chips, so feel free to reuse it!

main.rs has the actual implementation for RP2040 and RP2350.

License

This thingy is licensed under either of

• Apache License, Version 2.0 (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)

• MIT license (LICENSE-MIT or http://opensource.org/licenses/MIT)

at your option.