Nucleo-L476 Board not working properly suddenly

[Pranathi_ch]

Hi Team,

 

I have been working on the STM32L476RG board for a week now, I have tested a basec button led program and it was working properly, and I developed other sample codes like I2c and buzzer codes and gave a gap, now suddenly I notice that my board is not able to run the previously running codes as mentioned above. I am having no clue what could actually go wrong!!!!

 

I have also came across the STM32 Cube programmer where you can erase the flash memory like doing a mass erase to recover the board, which also didn't work?

Does this usually happen with STM32 boards? How to I recover my board right now?

 

 

Thanks,

Pranathi

[Pranathi_ch]

Please note that the falshing is working properly and the USB is properly detected but only the working codes are not working suddenly now, even after trying to recover it using the programmer tool.

[Imen.D]

Hello @Pranathi_ch,

Check the connection between ST-LINK and the target board, check the NRST pin.

Perform a hardware reset manually after flashing.

[Pranathi_ch]

Hi @Imen.D , I am using the nucleo board which comes with the st line on board, So i guess no need of explicit connections in that case right? if my understanding is right? 

 

I haven't changes anything like jumpers on board and kept it default, the board worked(was running the logic) for sometimes and now it's not :(

[Andrew Neil]

"Not working" tells us virtually nothing.

What, exactly, is not working?

What debugging have you done?

 

See: How to write your question to maximize your chances to find a solution

 

PS:

---

@Pranathi_ch wrote:

it was working properly ... gave a gap, now suddenly I notice that my board is not able to run the previously running codes as mentioned above.

---

Was the board used by others in that time?

Was it safely stored?

Has anything changed on the Host computer?

[Ozone]

> ... now suddenly I notice that my board is not able to run the previously running codes ...

As mentioned by others, this description is not really helpful.

Run your code in the debugger, and disable "Run to main()".
Perhaps it crashed during initialisation due to changes you made.

Or your code goes into a fault / lock-up for the same reason almost immediately, and you need to do a mass-erase.