About AAlis.23

AAlis.23 · 2025-03-22

Hi,I’m working with an STM32H743 and trying to use the RTC. Everything works fine using the LSI, but when I try to use the LSE (with an external oscillator permanently connected to VBAT to keep track of time even when the system is powered off), I ca...

AAlis.23 · 2025-03-13

Issue with FatFs and D-Cache on STM32 (CubeMX Library)I'm having issues using FatFs with D-Cache enabled on an STM32. After searching, I found several posts reporting similar problems, but I haven't seen a clear solution.I’m using the FatFs library t...

AAlis.23 · 2025-03-08

I’ve encountered a bug in TouchGFX version 4.25 when working with TextAreas. If you manually assign an ID to a TextArea, such as "id_txt_config_ntp", and then duplicate the TextArea (using copy and paste), the second generated one remains linked to t...

AAlis.23 · 2025-03-07

When DCache is disabled, CubeMX still generates this:#define __DCACHE_PRESENT 1U /*!< CM7 data cache present */If you comment out this line, CubeMX will uncomment it, causing some peripherals to fail.Using 6.14 and the STM32H743 cpu.

AAlis.23 · 2025-03-07

When unchecking "Generate Code" for MX_LWIP_Init, the code is still generated anyway. It's very annoying because I have to delete the generated function every time I generate code. Using CubeMX version 6.14.

AAlis.23 · 2025-03-25

Finally I've found it on errata sheet:I think this is the problem... more than inaccurate this wont start.

AAlis.23 · 2025-03-25

I did another test; I have another board with a different H743 but in a different package, the STM32H743IIT6. Same oscillator and powered in the same way, and the code runs without issues, detects the LSE, and continues. I run the same code on the bo...

AAlis.23 · 2025-03-25

Schematic is wrong???. How is it going to work if you don’t have power on Vbat? You’ve placed a capacitor, and that’s it. You’re missing a diode to 3V3; otherwise, how is the capacitor going to charge?Maybe that series has the diode integrated into t...

AAlis.23 · 2025-03-23

Hi,Checked and working correctly. I can see the ID14 bit toggling during debugging.

AAlis.23 · 2025-03-23

I have a supercap for Vbat and for the oscillator, yes.

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User Activity

STM32H743 LSE RTC initialization timeout with external oscillator

FatFS and D-Cache not working together

Bug in TouchGFX 4.25: Issue when duplicating a TextArea with manually assigned ID

CubeMX disable DCache not working properly. BUG

CubeMX uncheck "Generate Code" not working. BUG

Re: STM32H743 LSE RTC initialization timeout with external oscillator

Re: STM32H743 LSE RTC initialization timeout with external oscillator

Re: STM32L452 LSE not starting

Re: STM32H743 LSE RTC initialization timeout with external oscillator

Re: STM32H743 LSE RTC initialization timeout with external oscillator