rpi-hdmi-touchscreen-driver

Enable Waveshare Electronics 5inch HDMI LCD Rev1.1 touch feature for Raspbian Buster.

Prerequisites

Access rights

During calibration, uinput events are generated. Users with no administrative rights will need to temporarily give access to uinput. If not already present, configure the rights to access the hid devices.

Linux

In the file '/etc/udev/rules.d/99-com.rules', append 'KERNEL=="hidraw*", ATTRS{idVendor}=="0eef", ATTRS{idProduct}=="0005", MODE="0660", GROUP="plugdev"'

echo "KERNEL==\"hidraw*\", ATTRS{idVendor}==\"0eef\", ATTRS{idProduct}==\"0005\", MODE=\"0660\", GROUP=\"plugdev\"" >> /etc/udev/rules.d/99-com.rules

Only for calibration

sudo chmod 666 /dev/uinput

After reboot the rights will be reseted.

Calibration

Install tslib to calibrate the touchscreen. Follow the tutorial from the rpi-5inch-hdmi-touchscreen-driver github repository to install the latest version.

Test

Linux

npm start

Installation

Linux

• Run the touchscreendriver after X starts by adding a startup script in /etc/X11/Xsession.d

echo $'#!/bin/sh\nnode /home/pi/rpi-hdmi-touchscreen-driver/index.js &\n' > /etc/X11/Xsession.d/99wav-touchscreen_driver
chmod 755 /etc/X11/Xsession.d/99wav-touchscreen_driver

Credits

• node-hid to read hidraw devices. - MIT
• robotjs to emulate the mouse movements and the mouse clicks. - MIT
• rpi-5inch-hdmi-touchscreen-driver for the excellent documentation about the interface of this type of touchscreen. - MIT
• tslib to calibrate the touchscreen. - GNU Lesser General Public License v2.1
• uinput to calibrate the touchscreen. - ISC