This article illustrates how to wire to your Arietta G25 an Adafruit 2.8 inch TFT display wired on SPI bussignal and using the fbtft drivers to see it as a standard Linux framebuffer video device.

It is available now a 2.8 inch LCD carrier board for Arietta G25 made by Acme Systems called XTERM-01. More info..

The Adafruit(c) 2.8' TFT display is a bright (4 white-LED backlight) and colorful display with a resolution of 240x320 pixels with individual RGB pixel control, with a 4-wire resistive touchscreen.

Wirings between Arietta G25 and the Adafruit 2.8 LCD

Atmel Touch (c) Input Devices Driver Download

The driver only registers one input device, which uses the screen parameters from the first T9 instance. The first T63 instance also uses those parameters. It is incorrect to send input reports from the second instances of these objects if they are enabled: the input scaling will be wrong and the positions will be mashed together. Atmel MaxTouch Precision touchpad driver for Pixel 2, Pixel 1, Samsung Chromebook 2, Samsung Chromebook 3 and other chromebooks. coolstar/crostouchpad4-atmel.

It it possible to change the allocation of D/C and RST signalsto other GPIO just editing the device tree file

As suggested by Adafruit(c)it is requested to close the three pads called IM1, IM2 and IM3 to use this display in SPI mode.

Install the Linux framebuffer drivers for small TFT LCD display modules

It is requested now to compile the fbtft Linux framebuffer drivers for small TFT LCD display modules available on this GitHub repository.

To do that install the toolchain and the Linux Kernel sources as exlained on this tutorial Compiling Linux Kernel 3.14.23 or any other 3.xx Kernelversion.

Then move inside the drivers/video directory:

and clone the fbtft repository.

Add to drivers/video/Kconfig this line:

Add to drivers/video/Makefile this line:

Launch the make menuconfig and enable the drivers just installed:

To enable the frame buffer and the LCD driver:

To enable the touch screen:

Edit spi section of acme-arietta.dts in this way to enable theLCD:

Atmel Driver For Windows 10

Set:

rotate = <0>; Portrait mode with the touch terminal on bottom
rotate = <90>; Landscape mode with the touch terminal on the left
rotate = <180>; Portrait mode with the touch terminal on top
rotate = <270>; Landscape mode with the touch terminal on the right

Note that the wiring between the LCD touchscreen lines and the Arietta A/D converter line are set for Landscape with touch terminal on right.

Edit adc section of acme-arietta.dts in this way to enable thetouch screen:

Copy the new Kernel image and the device tree blob in the first microSDpartition and reboot. After few second the TFT will be initializatedand the console prompt will appear.

Install X

Install the package:

To execute it open a command line session and launch X by typing.

Disable the screen saver

Touch screen calibration

Download the xinput-calibrator package from the Debian sid repositorybecause is non available on wheezy.

and install it

then run it:

Play a video

Install Mplayer:

Download this video at 320x240 pixel by typing:

or from this link:

Play it by typing:

This video countains the audio track. To ear it simply use an USB to audio adapter.

Play with DOOM

Install the package:

To execute DOOM launch X.org the type:

It is possible to play using an USB PC Keyboard or using push buttonswired between the Arietta GPIO line and GND.

This is an example of bindings to add to the acme-arietta.dts device tree file to manage the DOOM command via external push buttons:

To simulate more keys use the value listed on this file:

Kernel Linux 3.14.23
Debian 'Wheezy' Grip 7.7

Ready-to-use microSD image

This is a ready to use image to try the contents of this article.

Download arietta_lcd_28.img.zip and uncompress its contents
Write arietta_ledpanel.img on the microSD using:
- On Windows: Win32 Disk Imager
- On Linux: sudo dd if=arietta.img of=/dev/sdX where sdX is the microSD device
- On Mac: sudo dd if=arietta.img of=/dev/diskN where diskN is the microSD device

Login data

SSH, and Debug port: user root password acmesystems
SSH via Shellinabox: user acme password acmesystems
Codiad: user root password acmesystems

Special notes

For Arietta G25 with 256 MB of RAM rename boot256.bin in boot.bin in the first partition mounted on /boot
The image contains just the first two partitions (KERNEL and rootfs) and uses just the first 1.8 GB. To add more space create a third partition to add in /etc/fstab or enlarge the rootfs partition size with gparted.

EUR 25.00

XTERM-01 - 2.8 inch TFT display with resistive touch for Arietta G25

2.8 inch TFT display
Resistive touch screen
USB host port

Arietta G25 not included

| Product description |

Info:

Model: Atmel TouchPad Controller Drivers
Vendor: Atmel
Version: 10.43.56.83
Operating system:

Atmel Studio 7 Usb Drivers

Windows 8, Windows 8.1
Bits: 64-bit (x64)
Driver Date: 2013-09-10
Size: 2.7 mb

Driver description

Download driver Atmel TouchPad Controller Drivers version 10.43.56.83 for Windows 8, Windows 8.1 64-bit (x64).

Screenshot of files

Installation screenshots Atmel TouchPad Controller Drivers

Atmel Touch (c) Input Devices Driver Download

File Name

Atmel Usb Driver Download

atmel_touchpad_10.43.56.83.zip - (2.7 mb) v.10.43.56.83 - 10.09.2003

Atmel Usb Driver Package

Atmel Usb Driver

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