Hi Roger, The S1 is really not a good candidate for Guix applications. Normally, the canvas that Guix draws on is located in a frame buffer in ram. The S3 or S5 is a much better choice for Guix applications. I have used external LCD panels with an external bus interface to the S3 and created a Guix driver to update the LCD. The external bus can use either a 16 or 8 bit bus interface and is capable of updating the entire screen in 6.3ms for QVGA 565 RGB using a 16 bit interface and DMA. If you want to use the S1 I suggest that you use a SPI interface and do all of the graphics rendering without Guix and update the screen via the LCD command set over SPI. There is Arduino code out there that does this for small MCUs. -Gary
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