This project was initially forked off https://github.com/mmoskal/uf2-stm32f103 though the UF2 functionality has been removed and replaced with the ability to load .bin firmware files.
The default target is a generic STM32F103 dev board with an LED on PC13, commonly referred to as a "bluepill" board.
To build other targets, you can override the
TARGET variable when invoking make.
make clean
make TARGET=MAPLEMINI
| Target Name | Description | Bootloader offset | Link |
|---|---|---|---|
STM32F103 |
Generic STM32F103 target without LED | 8KiB | |
STM32F072 |
Generic STM32F072 target without LED | 16KiB | |
BLUEPILL |
Cheap dev board | 8KiB | http://wiki.stm32duino.com/index.php?title=Blue_Pill |
MAPLEMINI |
LeafLabs Maple Mini board and clone derivatives | 8KiB | http://wiki.stm32duino.com/index.php?title=Maple_Mini |
Local makefile settings can be set by creating a local.mk, which is automatically included.
Here is an example local.mk that changes the default target to the MAPLEMINI.
TARGET ?= STLINK
The bootloader occupies the lower 8KiB or 16KiB of flash, so your application must offset its flash contents by 8KiB or 16KiB. This can be done by modifying your linker script or flags as appropriate.
The bootloader can be built to look for arbitrary patterns, but the default for the STM32F103 target looks for a magic value stored in the RTC backup registers. Writing the magic value and then resetting will run the bootloader instead of the main application. When compiling with the DOUBLE_TAP option, the bootloader can be activated by double-tapping the reset button.
All contents of the dapboot project are licensed under terms that are compatible with the terms of the GNU Lesser General Public License version 3.
Non-libopencm3 related portions of the dapboot project are licensed under the less restrictive ISC license, except where otherwise specified in the headers of specific files.
See the LICENSE file for full details.