Teensy 4.1 unsupported in Adafruit_TFTLCD.h

[Bocam]

Hi,

I've been trying to get my Adafruit 2.8" TFT LCD to work with my Teensy 4.1 board via the 8 bit wiring tutorial using the standard Graphicstest demo software but the compiler reports "Board type unsupported / not recognized". Everything works with the SPI wiring but I understand the 8 bit interface should be a bit faster and that's what I'm looking for.
I'm aware of an earlier discussion on the Adafruit forum titled 2.8" TFT touchscreen + Teensy 3.0 but it's been around since 2013 and I'd like to know if there is an updated library or any other library that will work before I dive any deeper?

Thanks for any help.

 

[KurtE]

Yes it looks like no one has added the support for the Teensy boards into those files.

There is some stuff in the Adafruit_TFTLCD.cpp and .h that checks for Teensyduino
Like:
#if defined (__AVR__) || defined(TEENSYDUINO)
volatile uint8_t *csPort , *cdPort , *wrPort , *rdPort;
uint8_t csPinSet , cdPinSet , wrPinSet , rdPinSet ,
csPinUnset, cdPinUnset, wrPinUnset, rdPinUnset,
_reset;
#endif

But this won't work for T4.x as these need to be uint32_t...

And the pin_magic.h - has nothing in it for Teensy.

I know there were a couple threads up here about people making versions that run in parallel mode. But I don't remember which.
Possibly do a search for that.

I believe the UTFT library has some support for ILI9341, but not sure if 8 bit support or only 4?

Sorry not much help

Kurt