SMPS on the STM32H747XI

[Hal56-GCI]

I have created a project for the STM32H747I-DISCO and have deadlocked the MCU twice. a BIG thanks to ST for not having ANY warning about this.

The DISCO board comes configured to default to SMPS mode. The project I created, without any warnings, defaulted to LDO mode. I corrected the problem using the process described in UM2411, section 5.2.3 only to go right back into the deadlock condition when downloading code.

I now know that I must set the power mode to SMPS but I cannot find this setting in CubeMX.

I am using CubeIDE v1.17.0. Where is the power settings for LDO and SMPS?????

[Tesla DeLorean]

https://community.st.com/t5/stm32cubemx-mcus/default-settings-for-nucleo-h755-not-working-after-power-off/m-p/760162

https://community.st.com/t5/stm32cubemx-mcus/stm32h725-smps-issue/td-p/763986

[mƎALLEm]

Most probably it's an issue pointed out by @Tesla DeLorean 

There is a limitation in CubeMx 6.13.CubeIDE v1.17.0. It will be fixed as soon as possible.

[Tesla DeLorean]

>>I have created a project for the STM32H747I-DISCO and have deadlocked the MCU twice. a BIG thanks to ST for not having ANY warning about this.

I think I immediately bricked my H747I-DISCO about 7 years ago, and after doing the BOOT0 R192, had suggested a BOOT0 switch somewhere accessible, way back then. Same issue with the H745 / H750 DISCO's. I recollect there being an STM32 Cube Programmer "Access Port" trick too, but I don't recollect how that worked. These days I solder a right-angle jumper on the NUCLEO-144 H7 boards between VDD and BT0

https://community.st.com/t5/stm32cubeprogrammer-mcus/error-to-connect-to-target-stm32h747i-disco/m-p/294136

https://community.st.com/t5/stm32-mcus-boards-and-hardware/location-of-stm32h747i-disco-boot0-pin/td-p/156886

[Hal56-GCI · Accepted solution]

I modified my STM32H747I-DISCO by first placing a slide switch across R192 and also to convert it to LDO instead of SMPS. UM2411, Section 5.2.3

• LDO mode:
– SB1, SB12, SB49 mounted
– SB2, SB11, SB19, SB46, SB48 removed

I then configured my debugs as shown in the below ST video (at near time 10:30)

https://www.youtube.com/watch?v=k3mXhPZSasw

The video instructs to check the box "Halt all cores". Things didn't work until I UNCHECKED the box "Halt all cores". I now have a working, debuggable STM32H747I-DISCO with an H747 that runs at 480MHz which is what I wanted.

Thank you all!