host_rp2040

Overview

The build system contains similar files in all cases (derived from lnArduino)

• platformConfig.cmake : Location of toolchain and compile flags
• mcuSettings.cmake : Describe the chip, flash size, frequency,etc...
• build_default.cmake : Select which version to build

Using a RP2040 to debug

It is strongly suggested to use a Pico Zero, it is ridiculously small and you 'll have a pulsing led for free. Using a gumstick also works.

Building

This is a minimalistic port for RP2040, it works just fine. You'll need

• a recent ARM-Clang (see https://github.com/ARM-software/LLVM-embedded-toolchain-for-Arm
• rust nightly + arm toolchain
• The https://github.com/raspberrypi/pico-sdk
• You'll need to apply a small usb patch on the pico sdk ( lnArduino/mcus/arm_rp2040/tinyUsb/sdk.patch , else it will crash on usb)
• Edit build_default.make , just leave

SET(USE_CLANG True) SET(USE_RP2040 True)

• make build && cd build && cmake .. && make -j 4, you 'll end up with a .uf2