Display connected to SPI bus and using DMA

I took some time this morning to connect an AT91 ARM to an ILI9341 controlled display over the SPI bus using DMA transfer for transferring pictures from the SD card:

I am running the SPI clock at about 9MHz but I will try to double that shortly.

I suppose the next step might be to transfer pictures/animations using the USB link to a PC rather than the SD card, which would result into an ad-hoc use of the SPI DMA for the display to make very optimized transfers. All good fun 🙂

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