termlink is a simple CDC-ACM USB-serial application for the STM32F103 that serves as a testbed for experimenting with bootloaders and WebUSB. It has been tested with baudrates up to 2.25MBaud.
The default target is an STLink/v2 clone dongle.
To build other targets, you can override the
TARGET variable when invoking make.
make clean
make TARGET=BLUEPILL
| Target Name | Description | TX/RX pins | Link |
|---|---|---|---|
STLINK |
STLink/v2 hardware clones | RST/SWIM | https://wiki.paparazziuav.org/wiki/STLink#Clones |
STLINK-DFUBOOT |
STLink/v2 with dapboot bootloader | ||
BLUEPILL |
Cheap dev board | PA9/PA10 | http://wiki.stm32duino.com/index.php?title=Blue_Pill |
BLUEPILL-DFUBOOT |
Cheap dev board with dapboot bootloader |
The make flash target will use openocd to upload the firmware over SWD. By default, the Makefile assumes you're using a CMSIS-DAP based probe, but you can override this by overriding OOCD_INTERFACE variable. For example:
make OOCD_INTERFACE=interface/stlink-v2.cfg flash
If a USB DFU bootloader such as dapboot has already been flashed, you can update the firmware with dfu-util using the make dfu-flash target.
As an experimental alternative to dfu-util, you can talk to the USB DFU bootloader from the browser using WebUSB using the webdfu demo page.
Note: this has only been reliably tested with Chrome on Linux.
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 an STLink with a DFU bootloader
TARGET ?= STLINK-DFUBOOT
OOCD_INTERFACE ?= interface/stlink-v2.cfg
The default USB VID/PID pair is 1209/0001, the pid.codes test PID. For personal use, it's unlikely that this will cause issues, but if distributing the firmware for wider use, you may want to reserve an appropriate PID to avoid conflicts.
All contents of the termlink 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 termlink 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.