About sheng yang

sheng yang · 2025-03-13

I port GuiLite on my board with stm32h7, when I develop with multi layer app, I found when I use DMA2A to transfer data on two layers. the screen get some blink like.video_down_load_link:https://img.nickyam.com/file/BAACAgUAAyEGAASS2zT1AAIChGfS0ygzo2...

sheng yang · 2025-02-23

I use cubemx generate a project with uart5. It's ok.But when I move some init codes of uart5 to function ``void SystemInit (void)`` tail as below```MPU_Config();HAL_Init();SystemClock_Config();PeriphCommonClock_Config();MX_UART5_Init();dbg_console_tx...

sheng yang · 2024-12-19

I made a project on keil with generate flm file to download to external flash with my board. My board has a stm32h7b0zbt6 chip with ospi interface with a spi nor flash W25Q128. the interface releate is: PF6 ------> OCTOSPIM_P1_IO3 PF7 ------> OCTOS...

sheng yang · 2024-11-05

I made a board with ST32H7B0ZBT6, and add a external flash with W25Q128JVS。I found after I enable mapped function, I couldn't write data to external flash any more.the code with enable mapped func as below: uint8_t W25Qxx_OSPI_Init(void) { OSPI_R...

sheng yang · 2024-09-05

I made a project with stm32h7 board, and use pemicro multlink to debug it under keil. I found it keep in systick handler pending but no active.I checked systick module register as:the counter is changed.and then I checked SCB releate registers asand ...

sheng yang · 2025-03-14

I found another releate post here https://community.st.com/t5/stm32-mcus-products/stm32h743-sdram-issues-with-ltdc-dma2d/td-p/709557 besides after I slow the LTDC clock from 40MHz to 31.1111MHz, there is no blink anymore.

sheng yang · 2025-03-03

I'm sorry reply so late, the issue has resolved. Becase I move MX_UART5_Init prior _bss clear code, So the global handler of uart5 has some garbage value， so after I memset the global handler uart5 to zero before init the handler in MX_UART5_Init(); ...

sheng yang · 2025-02-23

thanks for your reply，I moved these codes :MPU_Config();HAL_Init();SystemClock_Config();PeriphCommonClock_Config();MX_UART5_Init();dbg_console_tx5("ABC21", 5); prior to main()

sheng yang · 2024-12-21

I modified the .sct file, made some code to ext flash like:; ************************************************************* ; *** Scatter-Loading Description File generated by uVision *** ; *************************************************************...

sheng yang · 2024-12-20

After I enable flash map , then I check the external flash data is right ,very thanks for your help .

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DMA2D cause screen blink with LTDC on my board with stm32H7B0

faied do uart send with uart5 with stm32h7b0zb

I generate a flm file, but failed when use this flm to download external flash.

after enable external flash mapped, couldn't write to external flash.

systick handler keep pending on stm32h7 board.

Re: DMA2D cause screen blink with LTDC on my board with stm32H7B0

Re: faied do uart send with uart5 with stm32h7b0zb

Re: faied do uart send with uart5 with stm32h7b0zb

Re: I generate a flm file, but failed when use this flm to download external flash.

Re: I generate a flm file, but failed when use this flm to download external flash.