About ESawa.1

ESawa.1 · 2024-11-21

Hello ST Forum,We are using an STM32H750I in a current project. This STM communicates via the USART1 with another STM32H750V at a baud rate of 512kBaud. The clock of the STM32H7 runs via an 8MHz HSE (external quartz) at 480MHz. The clock of the USART...

ESawa.1 · 2023-08-02

Hello together,we have a board with an STM32H750I connected to a W25Q128 Quad SPI flash. We have our application code on the Quad SPI flash and run our application via XiP. This works fine. Now we work on our bootloader to update the application code...

ESawa.1 · 2022-10-28

Hey together,I have a question regarding the STM32H7 ethernet interrupts. I have lwIP + freeRTOS running successfully on the device. All fixes which were indicated by @alister were applied and it runs quite stable. The strange part is that when I ap...

ESawa.1 · 2022-10-27

Hello together,i'm using the X-CUDE-USB-AUDIO expansion pack with the Development Board STM32F769 Discovery Kit. We plan to integrate it later on into our product. The example project for playback and recording works fine. But we wonder which synchro...

ESawa.1 · 2021-08-11

Hey together,I have a question regarding MPU settings for an external QuadSPI Flash. We have a project where the full application code is placed onto the 4MB Quad SPI Flash memory W25Q32JVSIM. We have set up the QuadSPI in MemoryMapped moded and plac...

ESawa.1 · 2024-11-26

Hey @AScha.3,our hardware guy checked the MCO with a high bandwidth DSO. He told me that he can definetly force a drift on the MCO when he apply ice-spray. This is how we force the temperature issue as tracking this during boottime is almost impossib...

ESawa.1 · 2024-11-25

Hey @Ozone,it really looks like what you descibe. If the system runs for 1 or 2 minutes, it is getting super stable. If you then reset the system the USART baudrate is perfectly stable. Really only if you let the system cool down for some hours the i...

ESawa.1 · 2024-11-25

Hey @NEdom.1,i really appreciate your reply and all the suggestions from the people here in the chat. Thanks a lot. Yes you are right, the USART is definetly not the right choise. As the hardware has to stay, we have to workaround it somehow. Either ...

ESawa.1 · 2024-11-24

Hey @AScha.3,Our hardware guy is checking the MCO with a high bandwidth DSO today or tomorrow. I will repor the result here. Crystal: Seems not to be the root cause, as cooling it isolated down does not trigger the issue. The PLL: Until now this is t...

ESawa.1 · 2024-11-24

Hey @Ozone,you are right, in this situation a SPI would be more robust. But as the hardware is at it is we have to workaround this missing clock somehow :D. Thanks for your suggestion. Best regards,Eric

User statistics

User Activity

STM32H750I USART1 Baudrate differs under cold temperature

STM32H750 Quad SPI Flash Dual Image

STM32H743 Ethernert AIS Interrupt

X-CUBE-USB-AUDIO Sychronization Characteristic

STM32H750 MPU XiP

Re: STM32H750I USART1 Baudrate differs under cold temperature

Re: STM32H750I USART1 Baudrate differs under cold temperature

Re: STM32H750I USART1 Baudrate differs under cold temperature

Re: STM32H750I USART1 Baudrate differs under cold temperature

Re: STM32H750I USART1 Baudrate differs under cold temperature