About ESawa.1

ESawa.1 · 2025-01-06

Hello together, I have a question regarding the configuration of the HSE. We have a product which is running on a crystal, so we configured our HSE as "Crystal/Ceramic Resonator". In a new hardware revision our hardware team decided to use a active o...

ESawa.1 · 2024-12-22

Hey together,I discovered a super strange a critical behaviour of the STM32H750 chip. Maybe you can help me to prove this issue. We have a firmware which is split into 2 parts (bootloader, application). Both BL and APP are using the UARTs to communic...

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 · 2024-12-23

Hey @SofLit,okay that’s for the hint. I found the section you showed above. So we have to verify that all peripherals used in the boot loader get any clock source. Just to provide always the possibility to recover from it if the application, for what...

ESawa.1 · 2024-12-23

Hey @SofLit,this is it, thanks a lot for your reply. But this is a very dangerous dependency, right? Meaning that we have to provide on any used peripheral (UARTS in this case) all clock sources in the bootloader, just to ensure that we can get out o...

ESawa.1 · 2024-12-22

Hey @Tesla DeLorean,i‘m using NRST (Button) to enter the bootloader.Best regards, Eric

ESawa.1 · 2024-12-22

Hey @Tesla DeLorean,you are totally right, we have to measure a bit more. But even using the HSI inside the BL as clock source for the UART does not help when you used (for example) PLLQ2 in the application before. This dependency makes me nervous an...

ESawa.1 · 2024-12-21

Hey @Guenael Cadier,we have exaclty the same behaviour. We use an STM32H750IB with multiple UARTs. Our firmware is splitt into 2 different parts (our custom bootloader, application firmware). From the application firmware we have a GPIO PD3 which is ...

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Configure crystal but using oscillator

STM32H7 UART TEACK forever after clock switch

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Re: STM32H7 UART TEACK forever after clock switch

Re: STM32H7 UART TEACK forever after clock switch

Re: STM32H7 UART TEACK forever after clock switch

Re: STM32H7 UART TEACK forever after clock switch

Re: UART TEACK flag stays reset at the end of HAL_UART_Init() - STM32U073