STM32 MCUs Products

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STM32H747: Reducing standby mode current consumption

Hello, We are using the STM32H747AI on a custom board and attempting to enter standby mode for power savings. The system supply is configured as "SMPS supplies LDO (no external supply)" to be able to use the boosted performance at 480MHz, but the chi...

2025-02-03T14_35_13,582544216+01_00.png
RopApe by Associate
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  • 2 replies
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Resolved! RM0477 Reference manual documentation error

Hello STM, I'm working on a project using the STM32H7R3L8H6H MCU with a PSRAM chip connected via HEXASPI to XSPM1. I'm encountering massive issues with the PSRAM initialization, which I described in a different post. I found a discrepancy between the...

Intector_0-1737788347282.png Intector_1-1737788477897.png

Resolved! USBX CDC for the stm32u5 in standalone (no RTOS) problem

Hello,I implemented a virtual com port using the usbx stack for the stm32U575 in standalone mode and it basicaly works.My problem is that I just can't put more than 8 bytes in the TX buffer at the time. If I do the program gets stuck (in the main loo...

ckoec by Associate II
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  • 2 replies
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Resolved! STM32 Peripheral lock (STM32h755)

I am working on an  application where I plan to relocate all non-safety modules to the CM4 core. To achieve full safety, I need a mechanism to lock the peripherals so that the CM4 core cannot access any peripherals configured in the CM7 core, includi...

sarun by Associate III
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  • 3 replies
  • 1 kudos

assembly code analysis

Can anyone comment on the prologue and epilogue of following CM7 code, particularly the content of r7 when the routine returns? { 0: b480 push {r7} 2: af00 add r7, sp, #0 if ((ANADIG_MISC->MISC_DIFPROG & ANADIG_MISC_MISC_DIFPRO...