About Microman

Microman · 2022-06-22

Hi all,I have to port a working LoRa project from STM32WL55JC (3.3V) to STM32WLE5CC. First besides the JC (BGA) has more pins thatn the E5CC (QFN), anything else should be the same (expect maiy EXTI which te project does not use).Now my the issue: Th...

Microman · 2022-05-11

Hi all,I am not sure if I understood the reference manual right: When I activate Read Out Protection RDP Level 1, I can no longer access RTC Backup registers if I execute in RAM. I did not read that also Backup RAM is inaccessible. But it looks it i...

Microman · 2021-10-22

I'm trying to write to a single register of a LCD controller using the 16 Bit FMC peripheral in SRAM mode.[update)My assumption at the moment is that the controller writes 64 bits even the command STRH should only write a half word (16 bits).When wri...

Microman · 2020-06-05

Hi all,Preamble:I have an STM32H743 application that needs to constantly read some data stream from an USB memory stick. Basically all works. I needed to apply the NAK fix to avoid FreeRTOS getting blocked from too many NAK IRQs. Done, no longer an i...

Microman · 2020-02-19

Hi all,I have a STM32H743 running at 400MHz with simple USB 1 wiring to an USB A jack. It works fine, no issues, runs for hours with thousands of read and write operations.But there is one little issue that drives me crazy:If I plug in and unplug one...

Microman · 2024-09-25

Another hint for DCMI and DMA overrun issuesJust to mention and help avoiding others to fall into the same overrun trap like me:Check to which power domain the DCMI and DMA is connected to and which memories are usable for a DMA transfer!I set up a d...

Microman · 2022-06-29

Oui merci ca va.Yes thanks! VDDPA and VDDRF on the samel level makes it work.BR

Microman · 2022-05-11

Hi, thanks for the document. Yes there is my issue: I reconfigure boot address and boot into RAM. I would need to find a way to start the RAM application without reset. I tried that already but alltough I De-Inited all the hardware (with HAL_DeInit()...

Microman · 2022-05-11

I walked through a lot of documents today and one application note from ST (not in the RM) told that accessing the Backup Regs from code executed in RAM is for security reason (possible code injection) not possible if RDP is on level 1 or 2. I'm real...

Microman · 2021-11-25

I am currently at the same stage as Paul. I need to use PC13 as a wakeup pin and it does not work at all. It is now end of 2021 and in the current available datasheet of the STM32H750 #12556 Rev 6 (Feb. '21) there still PC13 is marked with WKUP2. Th...

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User Activity

porting project from STM32WL55JC (3.3V) to STM32WLE5CC (1.18V) - all running but no RF signal on Tx

Accessing "Backup SRAM" with RDB Level 1 from Code in RAM

Trying to write 16 bits to a LCD via STM32H7 FMC memory controller end up in 4x16 bits write strobe [solved]

STM32H7 USB FS Host Core how to recover from "Data toggle error"

STM32H7 USB-HOST (dis)connect bouncing

Re: Why do I get overrun error when using DCMI?

Re: porting project from STM32WL55JC (3.3V) to STM32WLE5CC (1.18V) - all running but no RF signal on Tx

Re: Accessing "Backup SRAM" with RDB Level 1 from Code in RAM

Re: Accessing "Backup SRAM" with RDB Level 1 from Code in RAM

Re: WAKEUP/WKUP pin assignments STM32H7 devices appear to be documented incorrectly