树莓派上安装2.8寸TFT触摸屏

sudo apt-get update

sudo apt-get upgrade

//// 内核补丁

cd ~

// 下载内核补丁

wget http://adafruit-download.s3.amazonaws.com/libraspberrypi-bin-adafruit.deb

wget http://adafruit-download.s3.amazonaws.com/libraspberrypi-dev-adafruit.deb

wget http://adafruit-download.s3.amazonaws.com/libraspberrypi-doc-adafruit.deb

wget http://adafruit-download.s3.amazonaws.com/libraspberrypi0-adafruit.deb

wget http://adafruit-download.s3.amazonaws.com/raspberrypi-bootloader-adafruit-112613.deb

// 安装内核补丁

sudo dpkg -i -B *.deb

// 重启

sudo reboot

//// 安装、测试TFT驱动

sudo modprobe spi-bcm2708

sudo modprobe fbtft_device name=adafruitts rotate=90

export FRAMEBUFFER=/dev/fb1

startx

//// 显示驱动自动加载

sudo nano /etc/modules

//增加以下两行

spi-bcm2708

fbtft_device

sudo nano /etc/modprobe.d/adafruit.conf

// 添加一行

options fbtft_device name=adafruitts rotate=90 frequency=32000000

sudo mkdir /etc/X11/xorg.conf.d

sudo nano /etc/X11/xorg.conf.d/99-calibration.conf

// 写入如下内容

Section "InputClass"
   Identifier      "calibration"
   MatchProduct    "stmpe-ts"
   Option  "Calibration"   "3800 120 200 3900"
   Option  "SwapAxes"      "1"
   Option "EmulateThirdButton" "1"
   Option "EmulateThirdButtonTimeout" "750"
   Option "EmulateThirdButtonMoveThreshold" "30"
EndSection

FRAMEBUFFER=/dev/fb1 startx

sudo nano ~/.profile

//在文件最后添加

export FRAMEBUFFER=/dev/fb1

// 重启

sudo reboot

// 矫正触摸

sudo nano /etc/udev/rules.d/95-stmpe.rules

//新加入如下内容

SUBSYSTEM=="input", ATTRS{name}=="stmpe-ts", ENV{DEVNAME}=="*event*", SYMLINK+="input/touchscreen"

//重新加载驱动

sudo rmmod stmpe_ts; sudo modprobe stmpe_ts

//查看会出现event（x）的事件（这步可做可不做）

ls -l /dev/input/touchscreen

//安装矫正的程序

sudo apt-get install evtest tslib libts-bin

//这里直接直接测试触摸硬件，系统打印坐标，ctrl+c结束（这步可做可不做）

sudo evtest /dev/input/touchscreen

//矫正开始

sudo TSLIB_FBDEVICE=/dev/fb1 TSLIB_TSDEVICE=/dev/input/touchscreen ts_calibrate

//矫正测试，可以当画图板，画图形：） ctrl+c结束

sudo TSLIB_FBDEVICE=/dev/fb1 TSLIB_TSDEVICE=/dev/input/touchscreen ts_test

//// 当终端显示器

sudo nano /boot/cmdline.txt

//在rootwait 后面添加如下内容

fbcon=map:10 fbcon=font:VGA8x8

sudo dpkg-reconfigure console-setup

UTF-8 -》Guess optimal character set -》Terminus-》6x12（framebuffer only）

以上字体比较适合2.8的tft

//// 显示图像

sudo apt-get install fbi

wget http://adafruit-download.s3.amazonaws.com/adapiluv320x240.jpg

sudo fbi -T 2 -d /dev/fb1 -noverbose -a adapiluv320x240.jpg

//// 控制背光

sudo sh -c "echo 252 > /sys/class/gpio/export"

sudo ls -l /sys/class/gpio

sudo sh -c "echo 'out' > /sys/class/gpio/gpio252/direction"

// 关闭背光

sudo sh -c "echo '0' > /sys/class/gpio/gpio252/value"

// 开启背光

sudo sh -c "echo '1' > /sys/class/gpio/gpio252/value"

//// 开关机按钮控制

sudo nano /etc/modules

// 添加下行

rpi_power_switch

sudo nano /etc/modprobe.d/adafruit.conf

//增加下面内容，23号开关键就是最左侧的按钮

options rpi_power_switch gpio_pin=23 mode=0

sudo modprobe rpi_power_switch

//// 播放动画

sudo apt-get install mplayer

wget http://adafruit-download.s3.amazonaws.com/bigbuckbunny320p.mp4

mplayer -vo fbdev2:/dev/fb1 -x 240 -y 320 -framedrop bigbuckbunny320p.mp4