Template: Hardware/Software setting for touch e-paper HAT

Hardware Connection

You can directly attach it to the 40PIN GPIO of Raspberry Pi. Or you can wire it to Raspberry Pi with 12PIN cable, please refer to the Pin definition below:

Connect to Raspberry Pi
Touch e-Paper	Raspberry Pi
Touch e-Paper	BCM2835	Board
VCC	3.3V	3.3V
GND	GND	GND
DIN	MOSI	19
CLK	SCLK	23
CS	CE0	24
DC	25	22
RST	17	11
BUSY	24	18
INT	27	13
SCL	SCL1	5
SDA	SDA1	3
TRST	22	15

Take the 2.13inch Touch e-Paper HAT as an example, just plug it into the Raspberry Pi:

Enable SPI interface

PS: If you are using a system with a Bullseye branch, you need to change "apt-get" to "apt", and the system of the Bullseye branch only supports Python3.

Open the terminal, and use the command to enter the configuration page.

sudo raspi-config
Choose Interfacing Options -> SPI -> Yes  to enable the SPI interface

Reboot Raspberry Pi：

sudo reboot

Make sure that the SPI is not occupied by other devices, you can check in the middle of the /boot/config .txt.

Enable I2C interface

Open terminal, use command to enter the configuration page

sudo raspi-config
Choose Interfacing Options -> I2C -> Yes  to enable I2C interface

And then reboot the system:

sudo reboot

Libraries Installation

Install BCM2835 libraries

wget http://www.airspayce.com/mikem/bcm2835/bcm2835-1.68.tar.gz
tar zxvf bcm2835-1.68.tar.gz 
cd bcm2835-1.68/
sudo ./configure && sudo make && sudo make check && sudo make install

For more details, please refer to http://www.airspayce.com/mikem/bcm2835/

Install wiringPi libraries

sudo apt-get install wiringpi

#For Pi 4, you need to update it：
wget https://project-downloads.drogon.net/wiringpi-latest.deb
sudo dpkg -i wiringpi-latest.deb
gpio -v
#You will get 2.52 information if you install it correctly

Install Python libraries

#python2
sudo apt-get update
sudo apt-get install python-pip
sudo apt-get install python-pil
sudo apt-get install python-numpy
sudo pip install RPi.GPIO
sudo pip install spidev
#python3
sudo apt-get update
sudo apt-get install python3-pip
sudo apt-get install python3-pil
sudo apt-get install python3-numpy
sudo pip3 install RPi.GPIO
sudo pip3 install spidev

Download the demo

Open the terminal of the Raspberry Pi, execute command to download demo codes:

cd ~
git clone https://github.com/waveshare/Touch_e-Paper_HAT

Running the demo

C

Enter the directory of the C demo

cd ~/Touch_e-Paper_Code/c/examples

【Note】You can switch dependent libraries by modifying lines 14-16 of the Makefile. The program uses BCM2835 by default, which runs the fastest.(If you have already used BCM2835, you need to reboot the system when you switch to another library so that the demo can run normally.)

As shown in the picture below, switch libraries by commenting the lines:

Using the following commands to run the demo:

sudo make clean
sudo make -j4
sudo ./main

python Enter the directory of the python demo

cd ~/Touch_e-Paper_Code/python/examples

Enter the following commands, the demo can support python2/3: The following uses the 2.9inch Touch e-paper HAT as an example

# python2
sudo python2 TP2in9_test.py
# python3
sudo python3 TP2in9_test.py

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