TFT28-dietpi

Comment utiliser un écrant tactile TFT 2.8" sur Raspberry Pi + dietpi

1. Installer dietpi https://dietpi.com/
2. Installer Python3 git raspi-config
3. sudo raspi-config > Enable Remode GPIO (daemon pigpiod)
4. git clone https://github.com/adafruit/Raspberry-Pi-Installer-Scripts.git
5. cd Raspberry-Pi-Installer-Scripts
6. sudo pip3 install Click
7. chmod +x adafruit-pitft.py
8. sudo python3 adafruit-pitft.py --display=28r --rotation=90 --install-type=console -u /home/dietpi
9. sudo reboot
10. echo "test" > /dev/tty1
11. Code pour Tests boutons (avec RPi.GPIO : sudo apt install python3-rpi.gpio)

#!/usr/bin/python3 import RPi.GPIO as GPIO import time def bouton_2(channel): print ("Bouton 2 (GPIO" + str(channel) + ") appuyé") def bouton_3(channel): print ("Bouton 3 (GPIO" + str(channel) + ") appuyé") def bouton_4(channel): print ("Bouton 4 (GPIO" + str(channel) + ") appuyé") def bouton_1(channel): print ("Bouton 1 (GPIO" + str(channel) + ") appuyé") boutons = [18,22,23,27] GPIO.setmode(GPIO.BCM) GPIO.setup(boutons, GPIO.IN, pull_up_down=GPIO.PUD_UP) GPIO.add_event_detect(18, GPIO.FALLING, callback=bouton_4, bouncetime=250) GPIO.add_event_detect(22, GPIO.FALLING, callback=bouton_2, bouncetime=250) GPIO.add_event_detect(23, GPIO.FALLING, callback=bouton_1, bouncetime=250) GPIO.add_event_detect(27, GPIO.FALLING, callback=bouton_3, bouncetime=250) print ("J'attends 30secondes...") time.sleep(30) GPIO.cleanup()

12. Code pour Bouton PowerOFF : #!/usr/bin/env python3

d'après https://fearby.com/article/using-python-to-use-buttons-on-the-pitft-plus-320x240-tft-touch>

et adapté à pigpio

import pigpio import os import time Bouton1 = 23 # relié à GPIO23 Poweroff = False def Int_Bouton1(pin, level, tick): global Poweroff if not (Poweroff): #print ("Bouton 1 appuyé", pin, level, tick) Poweroff = True os.system("sudo poweroff") pi = pigpio.pi() if pi.connected: pi.set_pull_up_down(Bouton1, pigpio.PUD_UP) pi.set_mode(Bouton1, pigpio.INPUT) int23 = pi.callback(Bouton1, pigpio.FALLING_EDGE, Int_Bouton1) while True: time.sleep(1) else: print("Impossible d'accéder à PIGPIO, fin.") exit(1)

13. Création du service : sudo nano /etc/systemd/system/shutdown-press-simple.service [Unit] Description=Script bouton Poweroff After=multi-user.target [Service] User=dietpi WorkingDirectory=/home/dietpi ExecStart=/usr/bin/python3 /home/dietpi/shutdown-press-simple.py [Install] WantedBy=multi-user.target

14. sudo systemctl enable shutdown-press-simple.service

15. sudo systemctl start shutdown-press-simple.service

16. sudo systemctl status shutdown-press-simple.service