Adafruit 2.2 LCD base on ILI9340 controller.

[amd989]

Is the new 2.2" LCD from Adafruit gonna get supported? It's using the ILI9340 controller. I see they are no longer making the previous LCD that is supported here.

Here is the link http://www.adafruit.com/products/1480

Is ILI9341 driver somewhat compatible with ILI9340? If not, can I use the driver ILI9341 as a base to create a new driver for ILI9340, and contribute to the project?

Thanks

[notro]

I voluntered to do this for Adafruit, but I haven't heared back. I quick look at the registers suggest you can just copy the fb_ili9341 driver, but you might have to use another init sequence. Here's the one used by the adafruit library: https://github.com/adafruit/Adafruit_ILI9340/blob/master/Adafruit_ILI9340.cpp#L188

If the comparison between the controllers tuns out to be the same concerning the register used in the driver, especially in set_addr_win(), set_var() and set_gamma(), you could just try fb_ili9341:

sudo dmesg -C
sudo modprobe custom name=fb_ili9341 debug=3
dmesg
con2fbmap 1 1

Add init= if the intialization sequense don't match up. Add width= and height= if it's not the same. See here for more info on this: https://github.com/notro/fbtft/wiki/fbtft_device This page has some init= examples: https://github.com/notro/fbtft/wiki/flexfb

The display should turn black when initialized. A white display is not initialized.

You can use the latest fbtft image to do easy development: https://github.com/notro/fbtft/wiki/Development See here for patch submission: https://github.com/notro/fbtft/wiki/Development#submitting-patches

Keep asking if you need more help. I would also like to see support for this display.

[notro]

New release out with support for Adafruit 2.2" ILI9340