The procedure is the same as for the ST-Link v2 : download a pre-built version of the firmware (available on the release page) or build the firmware yourself (instructions provided below).
These boards are easily obtained through Aliexpress or eBay for less than $2 shipped.
Install stlink, then use this command :
st-flash write /path/to/dirtyjtag.bin 0x8000000
You can flash DirtyJTAG with a usb-serial dongle (such as based on chips such as wch340g, pl2303, cp2102, ft232r, etc...). In the following example, we use a cheap ch340g usb-serial dongle with can be bought on Aliexpress for 0.67USD.
Before flashing, you have to put the yellow jumpers BOOT0 to 1, and keep BOOT1
at 0, like on the following picture:
If you don't want to solder the yellow 2 rows of headers on the side of the board, you can prepare 2 bended pins at the end of 2 female-to-female wires, and connect them to A9 and A10, while pressing the head againt the jumpers block to maintain stability.
You have to connect:
| USB-SERIAL | BLUEPILL |
|---|---|
| 5V(or 3.3V) | SWD_3.3 |
| GND | SWD_GND |
| TX | A10 |
| RX | A9 |
Note that the flashing works with either 5V or 3V3 as supplied voltage from the USB-serial adaptor.
Then, you have to install stm32flash, which can be obtained in your
distribution (apt-get install stm32flash for debian/ubuntu), and flash the
firmware with this command:
$ stm32flash -w dirtyjtag.bluepill.bin -v /dev/ttyUSB0
stm32flash 0.5
http://stm32flash.sourceforge.net/
Using Parser : Raw BINARY
Interface serial_posix: 57600 8E1
Version : 0x22
Option 1 : 0x00
Option 2 : 0x00
Device ID : 0x0410 (STM32F10xxx Medium-density)
- RAM : 20KiB (512b reserved by bootloader)
- Flash : 128KiB (size first sector: 4x1024)
- Option RAM : 16b
- System RAM : 2KiB
Write to memory
Erasing memory
Wrote and verified address 0x08002028 (100.00%) Done.
Starting execution at address 0x08000000... done.
$
Then unplug it, put back the BOOT0 jumper to 0, and plug it in USB, you should
see the "1209:c0ca InterBiometrics" in the output of lsusb:
$ lsusb
Bus 001 Device 004: ID 2232:1024 Silicon Motion
Bus 001 Device 003: ID 8087:07da Intel Corp.
Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 002 Device 004: ID 1209:c0ca InterBiometrics
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
The bluepill build of DirtyJTAG has the following pinout :
| STM32 | JTAG |
|---|---|
| PA7 | TDI |
| PA6 | TDO |
| PA5 | TCK |
| PA3 | TMS |
| PA4 | TRST |
| PA2 | SRST |
If needed, pin definition can be modified in src/jtag.c.
The same bluepill firmware has been also been tested successfully on a Blackpill board.