About nonoriri

nonoriri · 2025-03-25

Hello,I'm working with a graphics output on an STM32H750-based board.My bitmap resources are stored in SQPI, and the frame buffers (double buffering) are in external SDRAM.The external SDRAM settings are as follows: TEX=1, Bufferable=1, Cacheable=1, ...

nonoriri · 2025-03-21

Hello,I'm developing graphics on an STM32H750-based board using TouchGFX, and my framebuffer is located in external SDRAM.I have a question regarding the MPU configuration for the external SDRAM that holds the framebuffer.If I configure the cache pol...

nonoriri · 2025-03-18

Hello,I'm currently developing graphics on an STM32H750-based board using TouchGFX, and my framebuffer is located in external SDRAM.I've noticed flickering occurring in certain screen areas, especially when the UI becomes complex.After investigating,...

nonoriri · 2024-06-17

Hello,I may have a misunderstanding about Dual-Flash programming, so my question might seem strange.In Dual-Flash mode, does the write speed double?If so, I think the following code cannot achieve double the write speed in Dual-Flash mode. (stm32h7xx...

nonoriri · 2024-06-13

I have created a custom external loader for the H750B-DK.I would like to improve the write/read speed using STM32CubeProgrammer.How can I achieve this? The current conditions are as follows:Dual Flash modeQSPI CLK = approximately 20 MHzMemory Mapped ...

nonoriri · 2025-03-26

Thank you for your kind response, GaetanGodart.The link you shared was very helpful.I've also checked the implementation of touchgfx::HAL::InvalidateCache() and touchgfx::HAL::FlushCache() in the TouchGFX engine, and they appear to be properly implem...

nonoriri · 2024-06-17

Thank you for your continuous and kind support.I have a question regarding the following statement:The PAGE WRITE now supports a 512-byte bufferWhat does "now" mean in this context?Does it imply that the support is due to a version update of Cube32ID...

nonoriri · 2024-06-13

Thank you very much for the answer.I believe that if I select HCLK3, the QSPI clock is HCLK3 / (Prescaler + 1).If I select PLL1Q, the QSPI clock is PLL1Q / (Prescaler + 1). I wonder why the documentation states the following sentence:quadspi_hclk (hc...

nonoriri · 2024-06-04

I think this is related to following thread.https://community.st.com/t5/stm32-mcus-products/stm32h7-crashes-when-reading-the-last-bytes-from-a-memory-mapped/td-p/169513https://community.st.com/t5/stm32-mcus-products/h7-quadspi-weirdness/m-p/258686Als...

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TouchGFX 4.25.0 Flickering

Configuring MPU for External SDRAM Framebuffer on STM32H750 with TouchGFX

TouchGFX framebuffer flickering - Cacheable or Non-cacheable MPU configuration?

STM32H750 About Dual-Flash mode program in QSPI

Optimizing the External Loader for H750B-DK (QSPI read/write speedup)

Re: [Bug Report?] TouchGFX 4.25.0 Flickering

Re: STM32H750 About Dual-Flash mode program in QSPI

Re: STM32H7 QUADSPI clock configuration

Re: The behavior of the External Loader (H750B-DISCO) and the CubeProgrammer seems to be abnormal