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Development Guide

Make sure you have the right Development Environment. Once that is covered, you can build all bootloaders with a single CMake workflow command:

cmake --workflow STM32H7-DevEBox-dbg

Next, see the bootloader-specific documentation:

The rest of the sections below are common for all bootloaders.

Flashing Bootloader

Using ST-LINK/V2 via SWD:

st-flash --format ihex --reset write .build/Core/<BOOTLOADER_NAME>.hex

Using J-Link via SWD:

JLinkExe -CommandFile flash.<BOOTLOADER_NAME>.jlink

Uploading Application Firmware

Reset the board and within 3 seconds run the following command:

.venv/bin/python3 tools/comm/comm.py upload_app <fw_path>

E.g.: .venv/bin/python3 tools/comm/comm.py upload_app ../m8ec/.build/platform/STM32H750/STM32H750.bin

If you have an SWD debugger connected to the board with a reset pin, you can run this without the need to reset the board:

st-flash reset && sleep 1 && .venv/bin/python3 tools/comm/comm.py upload_app <fw_path>

E.g.: st-flash reset && sleep 1 && .venv/bin/python3 tools/comm/comm.py upload_app ../m8ec/.build/platform/STM32H750/STM32H750.bin

Debugging in VSCode

You can debug your application together with the bootloader in VSCode using ST-LINK/V2 via SWD, openOCD and cortex-debug extension. Add your application ELF path to the symbolFiles list of the bl_iram launch.json configuration and start debugging by hitting F5.