RaspberryPi


3.5inch RPi Display

Features

  • 320×480 resolution
  • Resistive touch control
  • Supports any revision of Raspberry Pi (directly-pluggable)
  • Compatible with Raspberry Pi A, B, A+, B+, 2B, 3B, 3B+versions
  • Drivers provided (works with your own Raspbian/Ubuntu directly)
  • Size perfectly fits the Pi
  • High quality immersion gold surface plating
  • Supports Raspbian system, ubuntu system ,kali Linux system

Key Parameters

SKU MPI3501
LCD Type TFT
LCD Interface SPI
Touch Screen Type Resistive
Touch Screen Controller XPT2046
Colors 65536
Backlight LED
Resolution 320*240 (Pixel)
Aspect Ratio 8:5
Backlight Current TBD
Operating Temp. (℃) TBD

Interface

PIN NO. SYMBOL DESCRIPTION
1, 17 3.3V Power positive (3.3V power input)
2, 4 5V Power positive (5V power input)
3, 5, 7, 8, 10, 22 NC NC
6, 9, 14, 20, 25 GND Ground
11 TP_IRQ Touch Panel interrupt, low level while the Touch Panel detects touching
12 KEY1 Key
13 RST Reset
15 LCD_RS LCD instruction control, Instruction/Data Register selection
16 KEY2 KEY
18 KEY3 KEY
19 LCD_SI / TP_SI SPI data input of LCD/Touch Panel
21 TP_SO SPI data output of Touch Panel
23 LCD_SCK / TP_SCK SPI clock of LCD/Touch Panel
24 LCD_CS LCD chip selection, low active
26 TP_CS Touch Panel chip selection, low active

Driver Installation

  • Download raspbian image.
    https://www.raspberrypi.org/downloads/raspbian/
  • Tulis raspberry image ke sdcard.
  • Buka terminal, install driver lcd pada Raspberry Pi.
    git clone https://github.com/goodtft/LCD-show.git
    chmod -R 755 LCD-show
    cd LCD-show/
    sudo ./LCD35-show
  • Tunggu beberapa saat, Raspberry Pi akan reboot dengan sendirinya.

Touch screen calibration

Touchscreen dapat dikalibrasi dengan menggunakan program xinput_calibrator.

cd LCD-show/
sudo dpkg -i -B xinput-calibrator_0.7.5-1_armhf.deb

Setelah instalasi selesai, buka Preference->Calibrate Touchscreen. Ikuti perintah yang muncul pada layar. Jika kalibrasi selesai, copy parameter yang dihasilkan pada file 99-calibration.conf, kemudian simpan di folder /ect/X11/xorg.conf.d/.

/ect/X11/xorg.conf.d/99-calibration.conf

Problem Solving

  • Jika touchsreen antara x dan y tertukar, dapat diatasi dengan solusi berikut ini:
    sudo nano /boot/config.txt
    dtoverlay=piscreen,speed=16000000,rotate=90
    reboot
  • Jika x axis posisinya dalam keaadan mirror, dapat diatasi dengan solusi memasang evdev.
    apt-get install xserver-xorg-input-evdev

    Ganti urutan file pada folder /usr/share/X11/xorg.conf.d. Hal ini dilakukan agar konfigurasi evdev tidak tertimpa (overide) dengan konfigurasi libinput. Ganti angka evdev.conf lebih tinggi dari pada libinput.conf.

    cd /usr/share/X11/xorg.conf.d
    sudo mv 10-evdev.conf 45-evdev.conf
    reboot

Download

Jika kesulitan untuk memasang drivernya, dapat langsung mengunduh image yang sudah disediakan.

 

 

Image Name Version Support Password Download
Raspbian 2018-06-29 PI3B+/A/A+/
B/B+/PI2/PI3/
ZERO/ZERO W
user:pi
password:raspberry
MPI3501-Raspbian-20180629.7z
Ubuntu Mate:16.04 PI3,PI2 user:pi
password:raspberry
3.5inch-RPI3-RPI2-ubuntu-mate-16.04-beta2.7z
Kali-linux 2018.2(nexmon) PI3B+,PI3,PI2 user:root
password:toor
3.5SPI-kali-linux-2018.2-rpi3B+-nexmon.7z

Cross-compilation Qt 5.9.6 for RaspberryPi

Persiapan Raspberry Pi

Update package

Edit sources list /etc/apt/sources.list, kemudian uncomment baris deb-src:

sudo nano /etc/apt/sources.list
sudo apt-get update
sudo apt-get dist-upgrade
sudo reboot

Update Raspberry Pi firmware

sudo rpi-update
sudo reboot

Install dependencies

sudo apt-get build-dep qt4-x11
sudo apt-get build-dep libqt5gui5
sudo apt-get install libudev-dev libinput-dev libts-dev libxcb-xinerama0-dev libxcb-xinerama0

Persiapan Linux Host

Pada tutorial ini digunakan Ubuntu 16.04 x64.

Update package

sudo apt-get update
sudo apt-get -y upgrade

Install dependencies

sudo apt-get install git bison python gperf

Buat folder kerja

sudo mkdir /opt/qt5pi
sudo chown akhal:akhal /opt/qt5pi
cd /opt/qt5pi

Clone toolchain

git clone https://github.com/raspberrypi/tools

Tambahkan toolchain binary di variabel PATH

nano ~/.bashrc

Tambahkan baris berikut:

export PATH=$PATH:/opt/qt5pi/tools/arm-bcm2708/gcc-linaro-arm-linux-gnueabihf-raspbian-x64/bin

Download QT Source

https://download.qt.io/official_releases/qt/5.9/5.9.6/single/qt-everywhere-opensource-src-5.9.6.tar.xz

Untar QT source

tar -xvf t-everywhere-opensource-src-5.9.6.tar.xz

Buat hf configuration

cp -R qt-everywhere-opensource-src-5.9.6/qtbase/mkspecs/linux-arm-gnueabi-g++ qt-everywhere-opensource-src-5.9.6/qtbase/mkspecs/linux-arm-gnueabihf-g++
sed -i -e 's/arm-linux-gnueabi-/arm-linux-gnueabihf-/g' qt-everywhere-opensource-src-5.9.6/qtbase/mkspecs/linux-arm-gnueabihf-g++/qmake.conf

Copy raspberry pi sysroot

mkdir sysroot sysroot/usr sysroot/opt
rsync -avz akhal@192.168.1.100:/lib sysroot
rsync -avz akhal@192.168.1.100:/usr/include sysroot/usr
rsync -avz akhal@192.168.1.100:/usr/lib sysroot/usr
rsync -avz akhal@192.168.1.100:/opt/vc sysroot/opt

Buat symlinks to “missing” libraries

mv sysroot/usr/lib/arm-linux-gnueabihf/libEGL.so.1.0.0 sysroot/usr/lib/arm-linux-gnueabihf/libEGL.so.1.0.0_backup
ln -s sysroot/opt/vc/lib/libEGL.so sysroot/usr/lib/arm-linux-gnueabihf/libEGL.so.1.0.0
mv sysroot/usr/lib/arm-linux-gnueabihf/libGLESv2.so.2.0.0 sysroot/usr/lib/arm-linux-gnueabihf/libGLESv2.so.2.0.0_backup
ln -s sysroot/opt/vc/lib/libGLESv2.so sysroot/usr/lib/arm-linux-gnueabihf/libGLESv2.so.2.0.0
ln -s sysroot/opt/vc/lib/libEGL.so sysroot/opt/vc/lib/libEGL.so.1
ln -s sysroot/opt/vc/lib/libGLESv2.so sysroot/opt/vc/lib/libGLESv2.so.2

Ganti absolute symlinks dalam bentuk relative symlinks

wget https://raw.githubusercontent.com/riscv/riscv-poky/master/scripts/sysroot-relativelinks.py
chmod +x sysroot-relativelinks.py
./sysroot-relativelinks.py sysroot

Buat folder untuk build

mkdir qt5build
cd qt5build

Konfigurasi QT Source

../qt-everywhere-opensource-src-5.9.6/configure -opengl es2 -device linux-rasp-pi-g++ -device-option CROSS_COMPILE=arm-linux-gnueabihf- -sysroot /opt/qt5pi/sysroot -prefix /usr/local/qt5pi -opensource -confirm-license -skip qtwebengine -skip qtscript -nomake examples -make libs -v

Jika muncul error unknown CPU architecture ketika konfigurasi, tambahkan baris -no-use-gold-linker sehingga menjadi:

../qt-everywhere-opensource-src-5.9.6/configure -opengl es2 -device linux-rasp-pi-g++ -device-option CROSS_COMPILE=arm-linux-gnueabihf- -sysroot /opt/qt5pi/sysroot -prefix /usr/local/qt5pi -opensource -confirm-license -skip qtwebengine -skip qtscript -nomake examples -make libs -v -no-use-gold-linker

Make

Jika konfigurasi sudah selesai, jalankan perintah make.

make
make install

Upload hasil compile ke Raspberry Pi

cd /opt/qt5pi
rsync -avz sysroot/usr/local/qt5pi akhal@192.168.1.100:/usr/local

Konfigurasi Pada QT Creator

Install QT

Konfigurasi toolkit

Buka QT Creator, kemudian pilih option dan tambahkan parameter-parameter berikut:

  • Tools->Options…->Devices->Add
    Generic Linux Device
    Edit host, username, dan password.
  • Tools->Build&Run->Debuggers->Add
    Edit name dan path ( /opt/qt5pi/tools/arm-bcm2708/gcc-linaro-arm-linux-gnueabihf-raspbian-x64/bin/arm-linux-gnueabihf-gdb )
  • Tools->Compilers->Add->GCC->C
    Edit name dan path ( /opt/qt5pi/tools/arm-bcm2708/gcc-linaro-arm-linux-gnueabihf-raspbian-x64/bin/arm-linux-gnueabihf-gcc )
  • Tools->Compilers->Add->GCC->C++
    Edit name dan path ( /opt/qt5pi/tools/arm-bcm2708/gcc-linaro-arm-linux-gnueabihf-raspbian-x64/bin/arm-linux-gnueabihf-g++ )
  • Tools->Qt Versions->Add
    Pilih /opt/qt5pi/sysroot/usr/local/qt5pi/bin/qmake
  • Tools->Kits->Add
    Edit name
    Device type: Generic Linux Device
    Device: raspberry pi device
    Sysroot: Choose /opt/qt5pi/sysroot
    C and C++: Choose prior created raspberry pi compilers
    Debugger: Choose prior created raspberry pi debugger
    Qt version: Choose prior created raspberry pi qt version

Selesai


SSH login as root

Jika ingin login menggunakan ssh sebagai root pada raspberry pi, perlu mengganti file config untuk sshd.

  • login, kemudian edit file config untuk sshd.
    sudo nano /etc/ssh/sshd_config
  • Cari baris PermitRootLogin prohibit-password, kemudian ganti menjadi PermitRootLogin yes
  • Tutup file & simpan.
  • Reboot