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Eleduino SpotPear touchscreen

Taken from https://github.com/notro/rpi-firmware/issues/6#issuecomment-63180647, this is tested to work on Raspbian 7 (wheezy) and 8 (jessie).

update the firmware to support FBTFT

sudo apt-get install -y rpi-update
sudo REPO_URI=https://github.com/notro/rpi-firmware BRANCH=builtin rpi-update
sudo reboot

Modify boot args to enable the device

sed -i "s/$/ \
fbtft_device.custom \
fbtft_device.name=fb_ili9340 \
fbtft_device.gpios=dc:22,reset:27 \
fbtft_device.bgr=1 \
fbtft_device.speed=48000000/" /boot/cmdline.txt

Enable console on boot

sed -i "s/$/ \
fbcon=map:10 \
fbcon=font:ProFont6x11 \
logo.nologo/" /boot/cmdline.txt

Rotation etc..

sed -i "s/$/ \
dma.dmachans=0x7f35 \
console=tty1 \
consoleblank=0 \
fbtft_device.fps=50 \
fbtft_device.rotate=270/" /boot/cmdline.txt

Sort and unique /boot/cmdline.txt

cat /boot/cmdline.txt | \
tee /root/cmdline.txt-$(date +%s) | \
tr " " "\n" | \
sort -u | \
tr "\n" " " > /boot/cmdline.txt