Inkplate 13SPECTRA - increase data transfer rate?

TECHNICAL SUPPORT Inkplate
1

Looking at the schematics it seems like we’re using standard 3-wire SPI to send data to the display. This is a very large panel, is there a way we can communicate to the display using SDIO instead?

Seems to me we could combine the 2 separate SPI buses and maintain separate CS lines. The firmware would have to switch the peripherals on-demand but this should reduce the data transmission time by a lot.

Thanks!

2

Hello UFAnders,
While this is a feature we will look into in the future, the biggest bottleneck by far is the display refresh time. Data transfer for both framebuffers of each chip takes about 0.8 seconds, while the screen refresh itself takes 20 seconds. Said times were measured using the Inkplate13SPECTRA_Full_Screen_Colors.ino sketch.