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GRK.1
GRK.1
Associate
May 8, 2021 1:48 PM UTC
Solved

New Custom STM32H743BI board PCB ST-Link "Error: No STM32 target found" ? Need Help!

Hi Everyone,

Hope you are doing well.

I am not able to connect my new custom board based on STM32H743BI with STM32CubeProgrammer using STLINK-V3SET. and get the "Error: No STM32 target found" when i try to connect.

0693W00000ANkMsQAL.pngAs suggested in different threads i have confirmed the following:

  • Reset is pulled high
  • Boot0 is pulled low
  • VDD is stable at 3..28V at all desired pins of the board
  • VCAP 1&2 connected to 2.2uF capacitors showing voltage of 1.01V.
  • VDDA is 3.28V, VSSA is Grounded,

I am using a 10 pin SWD connector.

The Circuit diagram is shown below

0693W00000ANkNWQA1.png0693W00000ANkNgQAL.png0693W00000ANkOAQA1.png0693W00000ANkNlQAL.pngThanks,

This topic has been closed for replies.
Tesla DeLorean
Tesla DeLoreanBest answer
Guru
May 8, 2021 2:46 PM UTC

Given the low voltage reported by the programmer, you'll probably want to double check the orientation and connector you have for the SWD cable.

Make sure that Pin#1 matches properly, and the connector isn't rotated/backward

Check the pin numbering as laid out on the PCB

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

Tesla DeLorean
Tesla DeLoreanBest answer
Guru
May 8, 2021 2:46 PM UTC

Given the low voltage reported by the programmer, you'll probably want to double check the orientation and connector you have for the SWD cable.

Make sure that Pin#1 matches properly, and the connector isn't rotated/backward

Check the pin numbering as laid out on the PCB

Tips, Buy me a coffee, or three.. PayPal Venmo (See Profile) Up vote any posts that you find helpful, it shows what's working..
GRK.1
GRK.1Author
Associate
May 9, 2021 3:55 PM UTC

0693W00000ANmYvQAL.pngThank You so much.....

You made my day.

it was the problem of connector footprint. it was supposed to be mirrored vertically. Now i am able to connect and programmed the MCU.

Thanks again

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