2014-09-22 03:38 AM
I want to direct drive a rgb tft display via FSMC/DMA and an external async sram as framebuffer. The cpu is a STM32F103ZC.
What happens when CPU writes between transfers to RAM? The transfers would be then: DMA Read (FSMC SRAM), DMA Write (FSMC TFT), CPU Write (FSMC SRAM). I have read that there is a round robin scheduler. How much bandwidth can CPU get in this case?2014-09-22 04:03 AM
You should read AN2548. Beyond what's given there, you are left to experimentation, I am afraid.
JW