Error: No STM32 target found!

Vimal_M_A · ‎2025-01-22

Im using Nucleo-H755 i have using this board for the last 3 months usually i get some Errors like no target found but i have solved those by viewing in the community chats but this Error: No STM32 target found! If your product embeds Debug Authentication, please perform a discovery using Debug Authentication i have tried every thing i know and suggestions in the other posts like connect under reset , boot0 high , power down mode but i couldnt get it connected while connect the board there is a file in the H755 storagenamed FAIL.txt in that this msg is present The interface firmware FAILED to reset/halt the target MCU is there any other way to flash the board

Tesla DeLorean · ‎2025-01-24

>>can you explain how to do that

BOOT0 = HIGH

Methods/modes/pins explained in application note AN2606

If you use one of the supported UARTs, and connect that to a PC you can use STM32 Cube Programmer in *UART* mode. Via USB to the MCU, see USB/DFU methods.

Tips, Buy me a coffee, or three.. PayPal Venmo
Up vote any posts that you find helpful, it shows what's working..

Tesla DeLorean · ‎2025-01-24

+1

This is most probable. Watch also for CubeIDE to set both defines for LDO and SMPS, case of this reported within the last week.

My other concern would be the board on a conductive surface, or issues with external circuitry resulting in damage to the board.

On NUCLEO's with ST-LINK/V2-1 watch connectivity jumpers.

Tips, Buy me a coffee, or three.. PayPal Venmo
Up vote any posts that you find helpful, it shows what's working..

mƎALLEm · ‎2025-01-24

@Tesla DeLorean wrote:

+1

This is most probable. Watch also for CubeIDE to set both defines for LDO and SMPS, case of this reported within the last week.

Indeed.

@Vimal_M_A See this thread.

To give better visibility on the answered topics, please click on "Accept as Solution" on the reply which solved your issue or answered your question.

Vimal_M_A · ‎2025-01-26

yes im sure i always set smps only but the issue is even i tried boot0 pin high and connecting which also didn't work usually it would work i got two board right now im using the other board for my usage but i need this board also i haven't configured any uart in that code

mƎALLEm · ‎2025-01-26

@Vimal_M_A wrote:

yes im sure i always set smps only

Sorry I didn't understand. The issue I mentioned previously is indeed when you set the power in SMPS but CubeMX set both SMPS and LDO. Check your project preprocessor.

To give better visibility on the answered topics, please click on "Accept as Solution" on the reply which solved your issue or answered your question.