[TriEmbed] fast TFT library for ATMEGA

[Robert Gasiorowski]

You should try LaunchPad :) No level shifting required.
I have written glib that supports several different LCDs and LPs, and is
one of the fastest (if not the fastest) graphics library for LPs.

Rob.

On Fri, Jun 5, 2015 at 8:50 AM, Alex Davis via TriEmbed <
triembed at triembed.org> wrote:

> In case you didn't see this, someone updated the Adafruit TFT libraries
> to get a significant increase in performance out of the cheap, small TFT
> color displays:
> https://hackaday.io/project/6038-pdqgfx-optimzed-avr-lcd-graphics
>
> I tried it myself on an ST7735-based SPI display running on a 16 Mhz
> ATMEGA1284p. It's fast enough that full-screen updates are possible,
> whereas before you had to be clever and use windowing or try to limit
> the pixels changed.
>
> The downside is that under the library, SPI is now pushing enough data
> to reveal limitations in things like level shifters. My Adafruit 1.8"
> TFT has an HC4050 for 5v - 3.3v conversion which can't handle the speed.
>
> --
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