About Discoinferno

Discoinferno · 2024-07-15

We have a new board that uses the STM32H747 MCU and is based on an existing, proven design.Despite being schematically identical, the MCU on the new board cannot be detected by the STLINK-V3SET programmer and STM32Cube software. For whatever reason, ...

Discoinferno · 2024-07-22

This is the screenshot from the STMCube Programmer software when the portenta H7 is connected (H7 was in the completely erased state). (Note the 0.0V target voltage however connection is successful)

Discoinferno · 2024-07-22

Is the MCU supposed to have some registers pre-programmed before placing on the board perhaps?

Discoinferno · 2024-07-22

I have had 2 boards reworked to replace the MCU. On one board, we have removed everything that is on the VDD (3V3) line to remove any potential issues outside of the MCU, PMIC and JTAG connector. In response to a prior interaction "VCAP has 1.22V whe...

Discoinferno · 2024-07-22

Do you have TARGET_VDD on pin 1 or not?Yes, this pin of the JTG connector is connected to 3V1 on my board and the programmer When do you say "H7" and mention a PMIC - are you referring to a Portenta H7 board?(which provides power as pin 1 for VDD jus...

Discoinferno · 2024-07-19

I believe the programmer shouldn’t be, but I have 2 that do and that’s why I’m here asking for help to figure out why. It’s a mind bender. In my first reply I explained that the TVAPP I referred to is the VDD pin #1 of the jtag connector on the diagr...

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STM32H747(XI) JTAG Sensing

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