Raspberry Pi Pico H

Specs

Dual core Arm Cortex M0+ 133 MHz 264kB multi-bank high performance SRAM 2MiB external flash Datasheet: pico-datasheet.pdf

Pinout

VBUS 40 - micro-USB input voltage, connected to micro-USB port pin 1. This is nominally 5V (or 0V if the USB is not
connected or not powered).
VSYS 39 - main system input voltage, which can vary in the allowed range 1.8V to 5.5V, and is used by the on-board
SMPS to generate the 3.3V for the RP2040 and its GPIO. GND 38 - ground. UART TX 1 / RI 2 LED (GP25) - LED is connected to GPIO 25.

Rust

Dependencies

rustup target install thumbv6m-none-eabi
cargo install flip-link
cargo install --locked elf2uf2-rs

Set up mount point for RP2 device in /etc/fstab:

LABEL="RPI-RP2" /mnt/rp2 auto defaults,user,noauto,nosuid,nodev,noexec 0 0

Template project setup

Template project: https://github.com/rp-rs/rp2040-project-template

1. Uncomment elf2uf2-rs -d runner in .cargo/config.toml:

   diff --git a/.cargo/config.toml b/.cargo/config.toml
   index a565984..04a72c4 100644
   --- a/.cargo/config.toml
   +++ b/.cargo/config.toml
   @@ -2,8 +2,8 @@
    # Choose a default "cargo run" tool (see README for more info)
    # - `probe-rs` provides flashing and defmt via a hardware debugger, and stack unwind on panic
    # - elf2uf2-rs loads firmware over USB when the rp2040 is in boot mode
   -runner = "probe-rs run --chip RP2040 --protocol swd"
   -# runner = "elf2uf2-rs -d"
   +#runner = "probe-rs run --chip RP2040 --protocol swd"
   +runner = "elf2uf2-rs -d"
   
    rustflags = [
      "-C", "linker=flip-link",

   
   
2. Connect (while holding BOOTSEL button) and mount RP2 device: mount /mnt/rp2
   
3. Build and run: cargo run --release