This project houses both the ASL F4 USB bootloader for STM32F407 & STM32F303 chips along with the application to handle postprocessing and loading of firmware images onto hardware.
pip install -r requirements.txt
Simply type python setup.py install. Depending on your system you may need to
run that command as root. Your mileage may vary. After a successful install
you should see asl_f4_loader and asl_f4_postprocess binaries in your binary
search path.
- All requirements for the App listed above.
- GCC Arm Embedded 4.7
- OpenOCD
Run 'make', specifying the board, as an environment varible.
Example: BOARD=rct_mk2 make
This will generate both a bootloader binary (in .bin and .elf formats) as well as a python .tgz that can be installed with pip.
The application firmware will require the app_info.h file located in the root of this repository. It will also require a 2 word (8 octet) reserved area in it's RAM region starting at 0x20000000 (see the linker script for this bootloader for an example).
The app_info.h header contains a struct that will be needed in the firmware. No special placement is required, however, you will need to have it aligned on a word boundary, like so:
__attribute__((aligned (4)))
static const struct app_info_block info_block = {
.magic_number = APP_INFO_MAGIC_NUMBER,
.info_crc = 0xDEADBEEF,
};
Post procesing the firmware (which inserts CRC's and starting information) can be accomplished thusly:
asl_f4_fw_postprocess -f
The python package generated in the build process will provide two shell scripts:
- asl_f4_fw_postprocess: This handles CRCing the firmware and generating the ihex file for use in the loader
- asl_f4_loader: A shell script which can be used to load new firmware
It is also, of course, a library that can be included in your own applications for graphical loading, etc.
To load firmware, place your device in bootloader mode (On a RaceCapture Pro Mk2, this can be accomplished via holding down the reset and action buttons, then releasing reset).
Then run: asl_f4_loader -f <path_to_fw.ihex>
The loader software will automatically discover the device and update the firmware