Important changes to forums and questions
All forums and questions are now archived. To start a new conversation or read the latest updates go to forums.mbed.com.
6 years, 1 month ago.
my nucleo board (stm32f446re) is locked
Hi,
i flashed one program with whole GPIOA port as output port with low freq and pushpull configuration,
after flashing program in keil it is showing " NO target connected"
As per my understanding ST-LINK PINS are config with wrong values so i am not able to flash or debug any program
can you please give me some clue how i will reset my board. (in stlink update software board is working fine)
1 Answer
5 years, 6 months ago.
I got in the same situation and this is how I resolved the problem: 1. Download and install STM32 ST-LINK Utility https://www.st.com/en/development-tools/stsw-link004.html 2. Connect the Nucleo board with the USB cable to the PC. 3. From menu Target->Settings, under Mode, select "Connect Under Reset" 4. From menu Target->Erase Chip, click "OK" to confirm 5. After a few seconds, the chip should be erased and you are back in business again.
Hope this helps.