Let's verify that all the tools were installed correctly.
Connect the STM32F3DISCOVERY to your computer using an USB cable. Be sure to connect the cable to the "USB ST-LINK" port, the USB port in the center of the edge of the board.
The STM32F3DISCOVERY should now appear as a USB device (file) in
/dev/bus/usb. Let's find out how it got
lsusb | grep -i stm
This should result in:
$ lsusb | grep -i stm Bus 003 Device 004: ID 0483:374b STMicroelectronics ST-LINK/V2.1 $ # ^^^ ^^^
In my case, the STM32F3DISCOVERY got connected to the bus #3 and got enumerated as the device #4. This means the
/dev/bus/usb/003/004 is the STM32F3DISCOVERY. Let's check its permissions:
$ ls -la /dev/bus/usb/003/004 crw-rw-rw-+ 1 root root 189, 259 Feb 28 13:32 /dev/bus/usb/003/00
The permissions should be
crw-rw-rw-. If it's not ... then check your udev
rules and try re-loading them with:
sudo udevadm control --reload-rules
Unplug the STM32F3DISCOVERY and plug the Serial module. Now, figure out what's its associated file:
$ lsusb | grep -i ft232 Bus 003 Device 005: ID 0403:6001 Future Technology Devices International, Ltd FT232 Serial (UART) IC
In my case, it's the
/dev/bus/usb/003/005. Now, check its permissions:
$ ls -l /dev/bus/usb/003/005 crw-rw-rw- 1 root root 189, 21 Sep 13 00:00 /dev/bus/usb/003/005
As before, the permissions should be
Connect the STM32F3DISCOVERY using the USB cable to the USB port in the center of edge of the board, the one that's labeled "USB ST-LINK".
Two red LEDs should turn on right after connecting the USB cable to the board.
IMPORTANT There is more than one hardware revision of the STM32F3DISCOVERY board. For older revisions, you'll need to change the "interface" argument to
-f interface/stlink-v2.cfg(note: no
-1at the end). Alternatively, older revisions can use
-f board/stm32f3discovery.cfginstead of
-f interface/stlink-v2-1.cfg -f target/stm32f3x.cfg.
interfacedirectory is typically located in
/usr/share/openocd/scripts/, which is the default location OpenOCD expects these files. If you've installed them somewhere else use the
-s /path/to/scripts/option to specify your install directory.
openocd -f interface/stlink-v2-1.cfg -f target/stm32f3x.cfg
Below the references to
C:\OpenOCD is the directory where OpenOCD is installed.
openocd -s C:\OpenOCD\share\scripts -f interface/stlink-v2-1.cfg -f target/stm32f3x.cfg
NOTE cygwin users have reported problems with the -s flag. If you run into that problem you can add
C:\OpenOCD\share\scripts\directory to the parameters.
openocd -f C:\OpenOCD\share\scripts\interface\stlink-v2-1.cfg -f C:\OpenOCD\share\scripts\target\stm32f3x.cfg
OpenOCD is a service which forwards debug information from the ITM channel
to a file,
itm.txt, as such it runs forever and does not return to the
The initial output of OpenOCD is something like:
Open On-Chip Debugger 0.10.0 Licensed under GNU GPL v2 For bug reports, read http://openocd.org/doc/doxygen/bugs.html Info : auto-selecting first available session transport "hla_swd". To override use 'transport select <transport>'. adapter speed: 1000 kHz adapter_nsrst_delay: 100 Info : The selected transport took over low-level target control. The results might differ compared to plain JTAG/SWD none separate Info : Unable to match requested speed 1000 kHz, using 950 kHz Info : Unable to match requested speed 1000 kHz, using 950 kHz Info : clock speed 950 kHz Info : STLINK v2 JTAG v27 API v2 SWIM v15 VID 0x0483 PID 0x374B Info : using stlink api v2 Info : Target voltage: 2.915608 Info : stm32f3x.cpu: hardware has 6 breakpoints, 4 watchpoints
(If you don't ... then check the general troubleshooting instructions.)
Also, one of the red LEDs, the one closest to the USB port, should start oscillating between red light and green light.
That's it! It works. You can now use
Ctrl-c to stop OpenOCD or close/kill the terminal.