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ST-LinkV2 (stm32f4-Discovery)

SWD can be used to upload the firmware to stm32fx MCU.

A ST-Link is needed, any STM32-Discovery board has a ST-LinkV2 on it (starts @ 8€). STM32VL Discovery has a ST-LinkV1 (needs a bit more work when used with Tools from texane's code).

A standard ST-LinkV2 costs from 17€

SWD Header

Pin\Function CN2 Use
●1 VDD_Target Voltage supply for target
2 SWDCLK SWD clock
3 GND Ground
4 SWDIO SWD data input/output
5 NRST reset for target
6 SWO reserved

Pin 1 has a withe dot on the left side.

Needed Tools

st-flash and st-util are needed Tools from texane

download and compile

git clone git:// stlink
cd stlink

copy in the suitable directory (so it can be accessed direct with terminal, without enviroment variable)

sudo cp st-flash /usr/bin
sudo cp st-util /usr/bin

add udev rules (replace user with your username)

sudo cp /home/user/stlink/49-stlinkv*.rules /etc/udev/rules.d
sudo udevadm control --reload-rules

For ST-LinkV1 take a look at the readme.txt !

Test it

To copy the file from the MCU

st-flash read ~/STM32F4-Discovery.bin 0x8000000 0x100000

Output (just a example for the factory preload image)

INFO src/stlink-usb.c: -- exit_dfu_mode
INFO src/stlink-common.c: Loading device parameters....
src/stlink-common.c: Device connected is: F4 device, id 0x10016413
INFO src/stlink-common.c: SRAM size: 0x30000 bytes (192 KiB), Flash: 0x100000 bytes (1024 KiB) in pages of 16384 bytes

stm32f4-discovery shoud be found at /dev/stlinkv2_2

usb device

Bus 002 Device 007: ID 0483:3748 SGS Thomson Microelectronics ST-LINK/V2


Connect the ST-Link to the MCU. If a complete STM32F-Discovery board is used, CN3 jumpers need to be set. To program a external MCU, remove CN3 jumpers and connect the external MCU with the SWD header.

To use SWD
To use stlink (requires line above)

Update the STLink to blackmagic probe

The STM32F103 (STLink MCU) can be flashed with the blackmagic's firware.
This is irveversable !

How to upload the blackmagic probe firmware to the STLink of a discovery board