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 policy to Write-back, Write-allocate, would the following MPU settings be appropriate?
MPU_InitStruct.TypeExtField = MPU_TEX_LEVEL1;
MPU_InitStruct.IsShareable = MPU_ACCESS_SHAREABLE;
MPU_InitStruct.IsCacheable = MPU_ACCESS_CACHEABLE;
MPU_InitStruct.IsBufferable = MPU_ACCESS_BUFFERABLE;
Additionally, is it acceptable to enable both MPU_ACCESS_SHAREABLE and MPU_ACCESS_CACHEABLE at the same time?
I'm concerned that setting the SHAREABLE attribute might invalidate the CACHEABLE setting.
Thanks for any guidance!
