1.54inch e-Paper (C)

152x152, 1.54inch EPD panle

1.54inch e-Paper Module (C)

152x152, 1.54inch EPD module, Y/B/W Three-color, SPI interface

Introduction

152 x 152, 1.54inch EPD (Electronic Paper Display) module, three-color, SPI interface.

More

Interfaces

VCC	3.3V
GND	GND
DIN	SPI MOSI
CLK	SPI SCK
CS	SPI chip select (Low active)
DC	Data/Command control pin (High for data, and low for command)
RST	External reset pin (Low for reset)
BUSY	Busy state output pin (Low for busy)

Working principle

Introduction

This product is an E-paper device adopting the image display technology of Microencapsulated Electrophoretic Display, MED. The initial approach is to create tiny spheres, in which the charged color pigments are suspended in the transparent oil and would move depending on the electronic charge. The E-paper screen display patterns by reflecting the ambient light, so it has no background light requirement. Under ambient light, the E-paper screen still has high visibility with a wide viewing angle of 180 degrees. It is the ideal choice for E-reading. (Note that the e-Paper cannot support updating directly under sunlight.)

Communication protocol

Note: Different from the traditional SPI protocol, the data line from the slave to the master is hidden since the device only has a display requirement.

CS is slave chip select, when CS is low, the chip is enabled.
DC is data/command control pin, when DC = 0, write command, when DC = 1, write data.
SCLK is the SPI communication clock.
SDIN is the data line from the master to the slave in SPI communication.

SPI communication has data transfer timing, which is combined by CPHA and CPOL.

CPOL determines the level of the serial synchronous clock at an idle state. When CPOL = 0, the level is Low. However, CPOL has little effect to the transmission.
CPHA determines whether data is collected at the first clock edge or at the second clock edge of the serial synchronous clock; when CPHL = 0, data is collected at the first clock edge.

There are 4 SPI communication modes. SPI0 is commonly used, in which CPHL = 0, CPOL = 0.

As you can see from the figure above, data transmission starts at the first falling edge of SCLK, and 8 bits of data are transferred in one clock cycle. In here, SPI0 is used, and data is transferred by bits, MSB first.

We provide examples for four popular platforms: Arduino UNO, Jetson Nano， Raspberry Pi, and STM32. You can refer to the corresponding part according to the platform you use(This is a common template will be used by all types of the e-Paper, please refer to the corresponding type you have)

Arduino

Hardware connection

The demo codes provided are tested on Arduino UNO. If you want to use another Arduino board, you may need to change the connection and port the codes by yourself.
The RAM of Arduino UNO is too small to realize drawing function of e-Paper. In this case, for most of the e-Paper, we only make the image display function and save the image to flash.
We recommend you to use [E-Paper Shield] if you use Arduino UNO. The seven-color e-Paper is not compatible with the e-Paper shield, please note it.

Connect to Arduino Pins
e-Paper	Arduino UNO	Mega2560
Vcc	5V	5V
GND	GND	GND
DIN	D11	D51
CLK	D13	D52
CS	D10	D10
DC	D9	D9
RST	D8	D8
BUSY	D7	D7

Install Arduino IDE

arduino IDE Install Guide

Run the Program

Download the program on the product encyclopedia interface, and then unzip it. Arduino programs are located at ~/Arduino/…

Please select the corresponding program to open according to the ink screen model

Supporting types

1.02inch（128 × 80）

EPD_1in02d_test()：Example for 1.02inch e-Paper/1.02inch e-Paper Module

1.54inch（1.54inch e-paper c：152 × 152，others：200 × 200）

EPD_1in54_test()： Example for 1.54inch e-paper V1（Balck/White）: This version was discontinued.
EPD_1in54_V2_test(): Example for 1.54inch e-paper V2（Balck/White): Purchase date later than November 2019 is the V2 version, the current shipping version has the V2 logo on the back.
EPD_1in54b_test()： Example for 1.54inch e-paper B（Black/White/Red). It is currently out of production.
EPD_1in54b_V2_test(): Example for 1.54inch e-Paper B V2 (Black/White/Red). The purchase date later than November 2019 is the V2 version, the current shipping version has the V2 logo on the back;
EPD_1in54c_test()： Example for 1.54inch e-paper C（Black/White/Red）;

1.64inch（168 × 168）

EPD_1in64g_test(): Example for 1.64inch e-paper G (Black/White/Red/Yellow)

2.7inch（264 × 176）

EPD_2in7_test(): Example for 2.7inch e-paper（Black/White）;
EPD_2in7b_test(): Example for 2.7inch e-paper B（Black/White/Red）;
EPD_2in7b_V2_test(): Example for 2.7inch e-paper B V2（Black/White/Red). The purchase date is later than February 2021 is the V2 version, the current shipping version has the V2 logo on the back;

2.9inch (296 × 128)

EPD_2in9_test(): Example for 2.9inch e-paper (Black/White), this version was discontinued.
EPD_2in9_V2_test(): Example for 2.9inch e-paper V2（Black/White）; The purchase date is later than December 2020 is the V2 version, the current shipping version has the V2 logo on the back;
EPD_2in9bc_test(): Example for 2.9inch e-paper B（Balck/White/Red） and 2.9inch e-paper C（Black/White/Yellow）;
EPD_2in9b_V3_test(): Example for 2.9inch e-paper B V3 （Balck/White/Red）; Purchase date later than July 2020 is the V3 version, the current shipping version has the V3 logo on the back;
EPD_2in9d_test(): Example for 2.9inch e-paper D（Black/White）;

2.13inch（2.13inch e-Paper：250 × 122，others：212 × 104）

EPD_2in13_test(): Example for 2.13inch e-paper V1（Black/White）, this version was discontinued.
EPD_2in13_V2_test(): Example for 2.13inch e-paper V2（Black/White）. The purchase date is later than May 2019, the V2 version is currently discontinued, and the V2 logo is affixed on the back;
EPD_2in13_V3_test(): Example for 2.13inch e-paper V3（Black/White） This is the current version with sticker V3 on the backside (2020-07-29)；
EPD_2in13bc_test()：Example for 2.13inch e-paper B（Black/White/Red）and 2.13inch e-paper C（Blackj/White/Yellow）;
EPD_2in13b_V3_test()：Example for 2.13inch e-paper B V3（Black/White/Red）Purchase date later than April 2020 is the V3 version, the current shipping version has the V3 logo on the back;
EPD_2in13d_test()： Example for 2.13inch e-paper D（Black/White）;

2.66inch (152 × 296)

EPD_2in66_test(): Example for 2.66inch e-Paper (Black/White);
EPD_2in66b_test(): Example for 2.66inch e-Paper B (Black/White/Red);

3inch (400 × 168)

EPD_3in0g_test(): Example for 3inch e-Paper G(Black/White/Red/Yellow);

3.52inch (360 × 240)

EPD_3in52_test(): Example for 3.52inch e-Paper (Black/White);

3.7inch (280 × 480)

EPD_3in7_test(): Example for 3.7inch e-Paper(Black/White);

4.01inch (640 × 400)

EPD_4in01_test(): Example for the 4.01inch e-Paper HAT (F) (Black/White/Green/Blue/Red/Yellow/Orange);

4.2inch（400 × 300）

EPD_4in2_test()： Example for 4.2inch e-paper（Black/White）；
EPD_4in2bc_test()： Example for 4.2inch e-paper B（Black/White/Red）；
EPD_4in2b_V2_test()： Example for 4.2inch e-paper B V2（Black/White/Red）. The purchase date is later than November 2020, it is the V2 version, and the current shipping version has the V2 logo on the back;

5.65inch (600 × 558)

EPD_5in65f_test(): Example for for 5.65inch e-Paper F (Black/White/Green/Blue/Red/Yellow/Orange);

5.83inch（600 × 448）

EPD_5in83_test()： Example for 5.83inch e-paper（Black/White）, It is currently out of production.
EPD_5in83_V2_test()： Example for 5.83inch e-paper V2（Black/White）, The purchase date is later than December 2020 is the V2 version, the current shipping version, with the V2 logo on the back.
EPD_5in83bc_test()： Example for 5.83inch e-paper B（Black/White/Red）and 5.83inch e-paper C（Black/White/Yellow）;
EPD_5in83b_V2_test()： Example for 5.83inch e-paper B V2（Black/White/Red). The purchase date is later than August 2020 for the V2 version, the current shipping version, with the V2 logo on the back.

7.3inch (800 × 480)

epd_7in3g_test.py: Example for 7inch3 e-paper G (Black/White/Red/Yellow).

7.5inch（V1：640 × 384， V2：800 × 480）

EPD_7in5_test()： Example for 7.5inch e-paper（Black/White）. The purchase date is earlier than 2019-12-07 as the V1 version, which is currently discontinued.
EPD_7in5bc_test()： For example for 7.5inch e-paper B（Black/White/Red）and 7.5inch e-paper C（Black/White/Yellow）, The purchase date later than 2019-12-07 is the V2 version, and the current shipping version has the V2 logo on the back;
EPD_7in5_V2_test()： Example for 7.5inch e-paper V2（Black/White）. The purchase date of 7.5inch e-paper B is earlier than 2019-12-07, which is the V1 version, which is currently discontinued, and 7.5inch e-paper C is normally available.
EPD_7in5bc_V2_test()： Example for 7.5inch e-paper B V2（Black/White/Red）; The purchase date is later than 2019-12-07 is the V2 version, with the V2 logo on the back; the purchase date is later than March 2021 is the V3 version, the current 7.5inch e-paper B shipping version, with the V3 logo on the back, the same use this program;

7.5inch (880 × 528)

EPD_7in5_HD_test(): Example for 7.5inch e-Paper HD (Black/White);
EPD_7in5b_HD_test(): Example for 7.5inch e-Paper B HD (Black/White/Red);
*Note: The above time is for reference only, please refer to the screen logo for the specific version
For example, 1.54inch e-Paper Module. Open the epd1in54 folder and run the epd1in54.ino file.
Open the program, select the development board model Arduino UNO

Select the corresponding COM port

Then click compile and download

Since the flash of arduino UNO is very small, several large-size screens use MEGA2560 for better results:<

Code Description

Files

Take the 1.54-inch ink screen controlled by Arduino UNO as an example, open the epd1in54 directory:

in which:
epd1in54.ino: open with Arduino IDE;
epd1in54.cpp(.h): is the driver of the ink screen;
epdif.cpp(.h): is the hardware interface definition, which encapsulates the read and write pin levels, SPI data transmission, and pin initialization;
font8.cpp, font12.cpp, font16.cpp, font20.cpp, font24.cpp, fonts.h: are the models of characters of different sizes;
imagedata.cpp(.h): is the image data, which can convert the 2-bit depth BMP image into an array through Img2Lcd (downloadable in the development data).
The program is divided into the bottom hardware interface, the middle layer ink screen driver, and the upper layer application;

Bottom Hardware Interface

hardware interfaces are defined in epdif.cpp(.h) file

Write GPIO

void DigitalWrite(int pin, int value)

The first parameter is GPIO, and second parameter is level

Read GPIO

int DigitalRead(int pin)

The parameter is GPIO, and return value is level

Delay

DelayMs(unsigned int delaytime)

Delay time, unit is ms

SPI transmit data

SpiTransfer(unsigned char data)

Type of parameter is char

Hardware initailze

int IfInit(void)

The initialize function of SPI, input/ouptu are packaged here。

Middle EPD driver

Instantiate e-Paper class

The Arduino codes are based on C++, should instantiate e-Paper class is necessary.

Epd epd;

Initialize e-Paper, it should be used to initialize e-Paper or wakeup e-Paper from sleep mode.
2.13inch e-Paper，2.9inch e-Paper

epd.Init(lut_full_update); //Fully update
epd.Init(lut_partial_update); //Partial update

4.2inch e-Paper

epd.Init();

Clear, clear the e-Paper to white

epd.clear();

In some of project, the operation is divided to two part, they work in the same way

epd.ClearFrameMemory(0xFF); 
epd.DisplayFrame();//Display it

Transmit one frame of image and display

void Display(const unsigned char* frame_buffer);
void DisplayFrame(const unsigned char* frame_buffer_black, const unsigned char* frame_buffer_red); //Three color e-Paper

Sleep

epd.Sleep();

Set the e-Paper enter sleep mode. The consumption of the e-Paper will be reduced. However, you still need to update the display periodically to avoid a ghost problem.

Application functions

The drawing functions are defined in this part.
The coordination of the image buffer：

The functions are defined in epdpaint.h file

Initailze image buffer

Paint(unsigned char* image, int width, int height);

The first parameter is image buffer, the second one is the width of the picture, and the third one is the height.

Paint paint(image, 0, 0);    // width should be the multiple of 8

The second and third parameters are set to 0, you can re-configure them with functions below:

Set the width, height, rotate degree.

int  GetWidth(void); //Get the width
void SetWidth(int width);//Set the width
int  GetHeight(void);//Get the height
void SetHeight(int height);//Set the height
int  GetRotate(void);//Get the degree
void SetRotate(int rotate);//Set the rotate degree

Get the image data

unsigned char* GetImage(void);

Draw circle

void DrawPixel(int x, int y, int colored);

Coordination（x,y）

Draw characater

void DrawCharAt(int x, int y, char ascii_char, sFONT* font, int colored);

Set（x,y）as the start point, draw characters ascii_char, set the fonts as font, color is colored.

Draw string

void DrawStringAt(int x, int y, const char* text, sFONT* font, int colored);

Set（x,y）as the start point, draw the string text, font is font，color is colored

Draw line

void DrawLine(int x0, int y0, int x1, int y1, int colored);

Use （x0,y0）as start point, （x1,y1） as end point;

Draw cross line

void DrawHorizontalLine(int x, int y, int width, int colored);

Set（x0,y0）as start points，draw a line, the widht is width, and color is colored</ br>

Draw a vertical line

void DrawVerticalLine(int x, int y, int height, int colored);

Use（x0,y0） as start point, draw a vertical line, width is height and color is colored./ br>

Draw a empty rectangle

void DrawRectangle(int x0, int y0, int x1, int y1, int colored);

User（x0,y0） as start point,（x1,y1）is end point, draw a rectangel, color of edges are colored.

Draw a full rectangle

void DrawFilledRectangle(int x0, int y0, int x1, int y1, int colored);

Use（x0,y0）as start point, （x1,y1） is end point, draw a rectange, filled it with color: colored

Draw an empty circle

void DrawCircle(int x, int y, int radius, int colored);

Use （x,y）as center，draw a empty circle with radius, color is colored

Draw a full circle

void DrawFilledCircle(int x, int y, int radius, int colored);

Use （x,y）as center, draw a circle, radius is radius, filled with color: colored

Raspberry Pi

Hardware connection

If the board you get is the HAT version like 2.13inch e-Paper HAT, you can directly attach it on the 40PIN GPIO of Raspberry Pi. Or you can wire it to Raspberry Pi with 8PIN cable.

Connect to Raspberry Pi
e-Paper	Raspberry Pi
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

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.

Check /boot/config.txt, and you can see 'dtparam=spi=on' was written in.

To make sure SPI is not occupied, it is recommended to close other drivers' coverage. You can use ls /dev/spi* to check whether SPI is occupied. If the terminal outputs /dev/spidev0.1 and /dev/spidev0.1, SPI is not occupied.

Libraries Installation

Install BCM2835 libraries

#Open the Raspberry Pi terminal and run the following command
wget http://www.airspayce.com/mikem/bcm2835/bcm2835-1.71.tar.gz
tar zxvf bcm2835-1.71.tar.gz
cd bcm2835-1.71/
sudo ./configure && sudo make && sudo make check && sudo make install
# For more information, please refer to the official website: http://www.airspayce.com/mikem/bcm2835/

Install wiringPi libraries

#Open the Raspberry Pi terminal and run the following command
sudo apt-get install wiringpi
#For Raspberry Pi systems after May 2019 (earlier than before, you may not need to execute), you may need to upgrade:
wget https://project-downloads.drogon.net/wiringpi-latest.deb
sudo dpkg -i wiringpi-latest.deb
gpio -v
# Run gpio -v and version 2.52 will appear. If it does not appear, the installation is wrong

#Bullseye branch system use the following command:
git clone https://github.com/WiringPi/WiringPi
cd WiringPi
./build
gpio -v
# Run gpio -v and version 2.60 will appear. If it does not appear, it means that there is an installation error

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

Note: if you install on Raspian Lite, the git package is not istalled by default.

Install git

sudo apt-get install git -y

Download examples

Open the Raspberry Pi terminal and execute:
Method 1: Download from our official website

sudo apt-get install p7zip-full
wget https://files.waveshare.com/upload/3/39/E-Paper_code.7z
7z x E-Paper_code.7z -O./e-Paper
cd e-Paper/RaspberryPi_JetsonNano/

Method 2: Use the github repository

git clone https://github.com/waveshare/e-Paper
cd e-Paper/RaspberryPi_JetsonNano/

Examples

C

Open main.c to select the screen of the corresponding size

cd c
sudo nano examples/main.c

If you are using 2.7inch e-paper, then remove the // in front of the EPD_2IN7_test() function, then press ctrl+c, press the Y key and Enter to save and exit, as shown in the figure: (The picture may not be updated. Timely, subject to the specific demo)
Supporting types:

1.02inch（128 × 80）：

EPD_1in02d_test()：Example for 1.02inch e-Paper/1.02inch e-Paper Module

1.54inch（1.54inch e-paper c：152 × 152，others：200 × 200）：

EPD_1in54_test()： Example for 1.54inch e-paper V1（Balck/White）: This version was discontinued.
EPD_1in54_V2_test(): Example for 1.54inch e-paper V2（Balck/White): Purchase date later than November 2019 is the V2 version, the current shipping version has the V2 logo on the back.
EPD_1in54b_test()： Example for 1.54inch e-paper B（Black/White/Red). It is currently out of production.
EPD_1in54b_V2_test(): Example for 1.54inch e-Paper B V2 (Black/White/Red). The purchase date later than November 2019 is the V2 version, the current shipping version has the V2 logo on the back;
EPD_1in54c_test()： Example for 1.54inch e-paper C（Black/White/Red）;

1.64inch（168 × 168）

EPD_1in64g_test(): Example for 1.64inch e-paper G (Black/White/Red/Yellow)

2.7inch（264 × 176）

EPD_2in7_test(): Example for 2.7inch e-paper（Black/White）;
EPD_2in7b_test(): Example for 2.7inch e-paper B（Black/White/Red）;
EPD_2in7b_V2_test(): Example for 2.7inch e-paper B V2（Black/White/Red). The purchase date is later than February 2021 is the V2 version, the current shipping version has the V2 logo on the back;

2.9inch (296 × 128)

EPD_2in9_test(): Example for 2.9inch e-paper (Black/White), this version was discontinued.
EPD_2in9_V2_test(): Example for 2.9inch e-paper V2（Black/White）; The purchase date is later than December 2020 is the V2 version, the current shipping version has the V2 logo on the back;
EPD_2in9bc_test(): Example for 2.9inch e-paper B（Balck/White/Red） and 2.9inch e-paper C（Black/White/Yellow）;
EPD_2in9b_V3_test(): Example for 2.9inch e-paper B V3 （Balck/White/Red）; Purchase date later than July 2020 is the V3 version, the current shipping version has the V3 logo on the back;
EPD_2in9d_test(): Example for 2.9inch e-paper D（Black/White）;

2.13inch（2.13inch e-Paper：250 × 122，others：212 × 104）：

EPD_2in13_test(): Example for 2.13inch e-paper V1（Black/White）, this version was discontinued.
EPD_2in13_V2_test(): Example for 2.13inch e-paper V2（Black/White）. The purchase date is later than May 2019, the V2 version is currently discontinued, and the V2 logo is affixed on the back;
EPD_2in13_V3_test(): Example for 2.13inch e-paper V3（Black/White） This is the current version with sticker V3 on the backside (2020-07-29)；
EPD_2in13bc_test()：Example for 2.13inch e-paper B（Black/White/Red）and 2.13inch e-paper C（Blackj/White/Yellow）;
EPD_2in13b_V3_test()：Example for 2.13inch e-paper B V3（Black/White/Red）Purchase date later than April 2020 is the V3 version, the current shipping version has the V3 logo on the back;
EPD_2in13d_test()： Example for 2.13inch e-paper D（Black/White）;

2.66inch (152 × 296)

EPD_2in66_test(): Example for 2.66inch e-Paper (Black/White);
EPD_2in66b_test(): Example for 2.66inch e-Paper B (Black/White/Red);

3inch (400 × 168)

EPD_3in0g_test(): Example for 3inch e-Paper G(Black/White/Red/Yellow);

3.52inch (360 × 240)

EPD_3in52_test(): Example for 3.52inch e-Paper (Black/White);

3.7inch (280 × 480)

EPD_3in7_test(): Example for 3.7inch e-Paper(Black/White);

4.01inch (640 × 400)

EPD_4in01_test(): Example for the 4.01inch e-Paper HAT (F) (Black/White/Green/Blue/Red/Yellow/Orange);

4.2inch（400 × 300）

EPD_4in2_test()： Example for 4.2inch e-paper（Black/White）；
EPD_4in2bc_test()： Example for 4.2inch e-paper B（Black/White/Red）；
EPD_4in2b_V2_test()： Example for 4.2inch e-paper B V2（Black/White/Red）. The purchase date is later than November 2020, it is the V2 version, and the current shipping version has the V2 logo on the back;

5.65inch (600 × 558)

EPD_5in65f_test(): Example for for 5.65inch e-Paper F (Black/White/Green/Blue/Red/Yellow/Orange);

5.83inch（600 × 448）：

EPD_5in83_test()： Example for 5.83inch e-paper（Black/White）, It is currently out of production.
EPD_5in83_V2_test()： Example for 5.83inch e-paper V2（Black/White）, The purchase date is later than December 2020 is the V2 version, the current shipping version, with the V2 logo on the back.
EPD_5in83bc_test()： Example for 5.83inch e-paper B（Black/White/Red）and 5.83inch e-paper C（Black/White/Yellow）;
EPD_5in83b_V2_test()： Example for 5.83inch e-paper B V2（Black/White/Red). The purchase date is later than August 2020 for the V2 version, the current shipping version, with the V2 logo on the back.

7.3inch (800 × 480)

epd_7in3g_test.py: Example for 7inch3 e-paper G (Black/White/Red/Yellow).

7.5inch（V1：640 × 384， V2：800 × 480）：

EPD_7in5_test()： Example for 7.5inch e-paper（Black/White）. The purchase date is earlier than 2019-12-07 as the V1 version, which is currently discontinued.
EPD_7in5bc_test()： For example for 7.5inch e-paper B（Black/White/Red）and 7.5inch e-paper C（Black/White/Yellow）, The purchase date later than 2019-12-07 is the V2 version, and the current shipping version has the V2 logo on the back;
EPD_7in5_V2_test()： Example for 7.5inch e-paper V2（Black/White）. The purchase date of 7.5inch e-paper B is earlier than 2019-12-07, which is the V1 version, which is currently discontinued, and 7.5inch e-paper C is normally available.
EPD_7in5bc_V2_test()： Example for 7.5inch e-paper B V2（Black/White/Red）; The purchase date is later than 2019-12-07 is the V2 version, with the V2 logo on the back; the purchase date is later than March 2021 is the V3 version, the current 7.5inch e-paper B shipping version, with the V3 logo on the back, the same use this program;

7.5inch (880 × 528)

EPD_7in5_HD_test(): Example for 7.5inch e-Paper HD (Black/White);
EPD_7in5b_HD_test(): Example for 7.5inch e-Paper B HD (Black/White/Red);
*Note: The above time is for reference only, please refer to the screen logo for the specific version

Recompile, the compilation process may take a few seconds.

Return to the c directory and run the following command
make clean
make
sudo ./epd

Python

PS: The system of the Bullseye branch only supports Python3.

Enter the folder of python code

cd python/examples
ls -al

Run the responding example

sudo python epd_xxx_test.py
sudo python3 epd_xxx_test.py

Supporting types:

1.02inch（128×80）：

epd_1in02_test.py：Example for 1.02inch e-Paper/1.02inch e-Paper Module

1.54inch（1.54inch e-paper c：152×152，others：200×200）：

epd_1in54_test.py： Example for 1.54inch e-paper V1（Balck/White）: This version is stopped production which can be bought before 2019-11-22；
epd_1in54_V2_test.py： Example for 1.54inch e-paper V2（Balck/White): This is the current version which can be bought now (2020-07-29). The e-Paper has V2 sticker on the backside.
epd_1in54b_test.py： Example for 1.54inch e-paper B（Black/White/Red). It is currently out of production.
epd_1in54b_V2_test.py： Example for 1.54inch e-paper B V2 (Black/White/Red). The purchase date is later than April 2020 is the V2 version, the current shipping version has the V2 logo on the back;
epd_1in54c_test.py： Example for 1.54inch e-paper C（Black/White/Red).

1.64inch（168 × 168）

epd_1in64g_test.py: Example for 1.64inch e-paper G (Black/White/Red/Yellow)

2.7inch（264×176）：

epd_2in7_test.py： Example for 2.7inch e-paper（Black/White）;
epd_2in7b_test.py： Example for 2.7inch e-paper B（Black/White/Red）;
epd_2in7b_V2_test.py： Example for 2.7inch e-paper B V2 (Black/White/Red). The purchase date is later than February 2021 is the V2 version, the current shipping version has the V2 logo on the back;

2.9inch（296×128）：

epd_2in9_test.py: Example for 2.9inch e-paper（Black/White）; It is currently out of production.
epd_2in9_V2_test.py: Example for 2.9inch e-paper V2（Black/White）; The purchase date is later than December 2020 is the V2 version, the current shipping version, with the V2 logo on the back.
epd_2in9bc_test.py： Example for 2.9inch e-paper B（Balck/White/Red） and 2.9inch e-paper C（Black/White/Yellow）;
epd_2in9b_V3_test.py： Example for 2.9inch e-paper B V3（Balck/White/Red; The purchase date later than July 2020 is the V3 version, the current shipping version has the V3 logo on the back;
epd_2in9d_test.py： Example for 2.9inch e-paper D（Black/White）;

2.13inch（2.13inch e-Paper：250×122，others：212×104）：

epd_2in13_test.py： Example for 2.13inch e-paper V1（Black/White）, this version is stopped production and it can be bought before 019-05-15;
epd_2in13_V2_test.py： Example for 2.13inch e-paper V2（Black/White） This is the current version with sticker V2 on the backside (2020-07-29)；
epd_2in13_V3_test.py: Example for 2.13inch e-paper V3（Black/White）, The purchase date later than February 2022 is the V3 version, the current shipping version, with the V3 logo on the back.
epd_2in13bc_test.py： Example for 2.13inch e-paper B（Black/White/Red）and 2.13inch e-paper C（Black/White/Yellow）;
epd_2in13b_V3_test.py： Example for 2.13inch e-paper B V3（Black/White/Red）
epd_2in13d_test.py： Example for 2.13inch e-paper D（Black/White）;

2.66inch (152 x 296)

epd_2in66_test.py: Example for 2.66inch e-Paper (Black/White);
epd_2in66b_test.py: Example for 2.66inch e-Paoer (Black/White/Red);

3inch (400 × 168)

EPD_3in0g_test.py: Example for 3inch e-Paper G(Black/White/Red/Yellow);

3.52inch (360 × 240)

EPD_3in52_test.py: Example for 3.52inch e-Paper (Black/White);

3.7inch (280 x 480)

epd_3in7_test.py: Example for 3.7inch e-Paper (Black/White);

4.01inch (640x400)

epd_4in01f_test.py: Example for 4.01inch e-Paper (Seven-color);

4.2inch（400×300）

epd_4in2_test.py： Example for 4.2inch e-paper（Black/White）；
epd_4in2bc_test.py： Example for 4.2inch e-paper B（Black/White/Red）；
epd_4in2b_V2_test.py： Example for 4.2inch e-paper B V2（Black/White/Red). The purchase date is later than November 2020, it is the V2 version, and the current shipping version has the V2 logo on the back;

5.65inch (600x558)

epd_5in65f_test.py: Example for 5.65inch e-Paper F (Seven-color);

5.83inch（600×448）：

epd_5in83_test.py： Example for 5.83inch e-paper（Black/White). It is currently out of production.
epd_5in83_V2_test.py： Example for 5.83inch e-paper V2（Black/White); The purchase date is later than December 2020 is the V2 version, the current shipping version has the V2 logo on the back;
epd_5in83bc_test.py： Example for 5.83inch e-paper B（Black/White/Red）and 5.83inch e-paper C（Black/White/Yellow）;
epd_5in83b_V2_test.py： Example for 5.83inch e-paper B V2（Black/White/Red). The purchase date is later than August 2020 is the V2 version, the current shipping version has the V2 logo on the back;

7.3inch (400 × 168)

epd_7in3g_test.py: Example for 7inch3 e-paper G (Black/White/Red/Yellow).

7.5inch（V1：640×384， V2：800×480）：

epd_7in5_test.py： Example for 7.5inch e-paper（Black/White）, this version is stopped production and it can be bought before 2019-12-07；
epd_7in5_V2_test.py： Example for 7.5inch e-paper V2（Black/White）, This is the current version with V2 sticker on the backside (2020-07-29)
epd_7in5bc_test.py： Example for 7.5inch e-paper B（Black/White/Red）and 7.5inch e-paper C（Black/White/Yellow）, 7.5inch e-paper B V1 version is stopped production and it can be bought before 2019-12-07;
epd_7in5b_V2_test.py： Example for 7.5inch e-paper B V2（Black/White/Red）. The purchase date later than 2019-12-07 is the V2 version, with the V2 logo on the back; the purchase date later than March 2021 is the V3 version, the current 7.5inch e-paper B shipping version, with the V3 logo on the back, the same use this program.

7.5inch (HD 880 x 528)

epd_7in5_HD_test.py: Example for 7.5inch e-Paper HD (Black/White);
epd_7in5b_HD_test.py: Example for 7.5inch e-Paper B HD (Black/White/Red);
Note: The above time is for reference only, please refer to the screen logo for the specific version
Just run the program corresponding to the screen, the program supports python2/3, take 1.54 V2 as an example

# python2
sudo python2.7 epd_1in54_V2_test.py
# python3
sudo python3 epd_1in54_V2_test.py

Codes Description(API)

The libraries for Raspberry Pi and Jetson Nano are same. Examples contain three parts, hardware interface, EPD driver and the GUI functions.

C

Hardware interface

We have carried out the underlying encapsulation. As the hardware platform is different, the internal is various. If you need to know the internal, you can go to the corresponding directory
You can see many definitions in DEV_Config.c(.h), in the directory: RaspberryPi_JetsonNano\c\lib\Config
C language uses two ways to drive: BCM2835 library, WiringPi library. The BCM2835 library is used by default. If you need to use the WiringPi library to drive, you can open RaspberryPi_JetsonNano\c\Makefile and modify lines 13-14.

Data type

#define UBYTE   uint8_t
#define UWORD   uint16_t
#define UDOUBLE uint32_t

Init and Exit

void DEV_Module_Init(void);
void DEV_Module_Exit(void);

Note: The Init() and Exit() function are used to configure GPIOs . EPD enter sleep mode after Exit() function is used, and the consumption of e-Paper should be 0 in sleep mode if the PCB is Rev2.1 version.

GPIO Read/Write

void DEV_Digital_Write(UWORD Pin, UBYTE Value);
UBYTE DEV_Digital_Read(UWORD Pin);

SPI transmit data

void DEV_SPI_WriteByte(UBYTE Value);

EPD Driver

The driver file are saved under RaspberryPi&JetsonNano\c\lib\e-Paper

Open .h to see the following functions

After the initialization, called when the screen starts working and after exiting sleep mode

//1.54inch e-Paper, 1.54inch e-Paper V2, 2.13inch e-Paper, 2.13inch e-Paper V2, 2.13inch e-Paper (D), 2.9inch e-Paper, 2.9inch e-Paper (D )
void EPD_xxx_Init(UBYTE Mode); // Mode = 0 global refresh initialization, Mode = 1 local refresh initialization
//other models
void EPD_xxx_Init(void);

Where xxx represents the model. If it is 2.13D, the full screen initialization is EPD_2IN13D_Init(0), the partial refresh initialization EPD_2IN13D_Init(1); if it is 1.54 V2, then EPD_1IN54_V2_Init(); if it is 7.5B, it is EPD_7IN5BC_Init(), because 7.5B and 7.5C are common The driver code, but the color displayed is different

Clear the screen, brush the ink screen to white

void EPD_xxx_Clear(void);

Where xxx represents the ink screen model. If it is 2.13D, then it is EPD_2IN9D_Clear(); if it is 7.5B, it is EPD_7IN5_Clear(), because 7.5B and 7.5C share the driver code, but the color displayed is different

Transfer a frame of picture data and open the display

//Black and white two-color ink screen
void EPD_xxx_Display(UBYTE *Image);
//Black and white red or black and white yellow ink screen
void EPD_xxx_Display(const UBYTE *blackimage, const UBYTE *ryimage);

Note that the following are special cases:

//For 2.13inch e-paper (D), 2.9inch e-paper (D) two flexible screens, partial refresh
void EPD_2IN13D_DisplayPart(UBYTE *Image);
void EPD_2IN9D_DisplayPart(UBYTE *Image);

//For 1.54inch e-paper V2 and 2.13inch e-paper V2, due to the upgrade of the control chip, for partial refresh, it is necessary to call EPD_xxx_DisplayPartBaseImage to display the static background image, that is, to perform partial refresh based on this image, and then call the dynamic EPD_xxx_DisplayPart ()

void EPD_1IN54_V2_DisplayPartBaseImage(UBYTE *Image);
void EPD_1IN54_V2_DisplayPart(UBYTE *Image);
void EPD_2IN13_V2_DisplayPart(UBYTE *Image);
void EPD_2IN13_V2_DisplayPartBaseImage(UBYTE *Image);

Enter sleep mode

void EPD_xxx_Sleep(void);

Note that after entering sleep mode, there are only two ways to work again: the first is a hardware reset, and the second is to call the initialization function again.
Where xxx represents the ink screen model. If it is 2.13D, then it is EPD_2IN13D_Sleep(); if it is 7.5B, it is EPD_7IN5BC_Sleep(), because 7.5B and 7.5C share the driver code, but the color displayed is different

GUI functions

GUI files can be found in RaspberryPi&JetsonNano\c\lib\GUI\GUI_Paint.c(.h) directory

The fonts can be found in the RaspberryPi&JetsonNano\c\lib\Fonts directory

Create an image buffer

void Paint_NewImage(UBYTE *image, UWORD Width, UWORD Height, UWORD Rotate, UWORD Color)

Image: the Image buffer
Width: width of the image
Height: Height of the image
Rotate: Rotate angle
Color: Color of the image

Select image buffer

void Paint_SelectImage(UBYTE *image)

The image buffer, it is a pointer of image buffer's first address

Rotate image: This function should be used after Paint_SelectImage()

void Paint_SetRotate(UWORD Rotate)

Rotate: The angle rotated. It should be ROTATE_0, ROTATE_90, ROTATE_180, ROTATE_270
Note: For different orientation, the position of the first pixel is different, here we take 1.54inch as example

Mirroring

void Paint_SetMirroring(UBYTE mirror)

mirror: The type of mirroring. (MIRROR_NONE, MIRROR_HORIZONTAL、MIRROR_VERTICAL、MIRROR_ORIGIN)

Set Pixel: This function is used to set the position and types of the pixel

void Paint_SetPixel(UWORD Xpoint, UWORD Ypoint, UWORD Color)

Xpoint: The x-axis coordination of pixel
Ypoint: The y-axis coordination of pixel
Color: The color of the pixel

Clear: This function is used to clear the e-Paper

void Paint_Clear(UWORD Color)

Color: The color of the display

Clear window: This function is used to clear a partial area

void Paint_ClearWindows(UWORD Xstart, UWORD Ystart, UWORD Xend, UWORD Yend, UWORD Color)

Xstart: The x-axis coordination of the start point
Ystart: The y-axis coordination of the start point
Xend: The x-axis coordination of the end point
Yend: The y-axis coordination of the end point
Color: The color of the windows

Draw point

This function is used to draw point.

void Paint_DrawPoint(UWORD Xpoint, UWORD Ypoint, UWORD Color, DOT_PIXEL Dot_Pixel, DOT_STYLE Dot_Style)

Xpoint: The x-axis coordination of point
Ypoint: The y-axis coordination of point
Dot_Pixel: The size of the point

 	 	 typedef enum {
 	 	 	 DOT_PIXEL_1X1  = 1,	// 1 x 1
 	 	 	 DOT_PIXEL_2X2  , 		// 2 X 2
 	 	 	 DOT_PIXEL_3X3  , 	 	// 3 X 3
 	 	 	 DOT_PIXEL_4X4  , 	 	// 4 X 4
 	 	 	 DOT_PIXEL_5X5  , 		// 5 X 5
 	 	 	 DOT_PIXEL_6X6  , 		// 6 X 6
 	 	 	 DOT_PIXEL_7X7  , 		// 7 X 7
 	 	 	 DOT_PIXEL_8X8  , 		// 8 X 8
 	 	} DOT_PIXEL;

Dot_Style: The style of the point

 	 	typedef enum {
 	 	   DOT_FILL_AROUND  = 1,		
 	 	   DOT_FILL_RIGHTUP,
 	 	} DOT_STYLE;

Drawn Line

void Paint_DrawLine(UWORD Xstart, UWORD Ystart, UWORD Xend, UWORD Yend, UWORD Color, LINE_STYLE Line_Style , LINE_STYLE Line_Style)

This function is used to draw a line

Xstart: The start x-axis coordination of the line
Ystart: The start y-axis coordination of the line
Xend: The end x-axis coordination of the line
Yend: The end y-axis coordination of the line
Line_width: The width of the line

 	 	typedef enum {
 	 	 	 DOT_PIXEL_1X1  = 1,	// 1 x 1
 	 	 	 DOT_PIXEL_2X2  , 		// 2 X 2
 	 	 	 DOT_PIXEL_3X3  ,		// 3 X 3
 	 	 	 DOT_PIXEL_4X4  ,		// 4 X 4
 	 	 	 DOT_PIXEL_5X5  , 		// 5 X 5
 	 	 	 DOT_PIXEL_6X6  , 		// 6 X 6
 	 	 	 DOT_PIXEL_7X7  , 		// 7 X 7
 	 	 	 DOT_PIXEL_8X8  , 		// 8 X 8
 	 	} DOT_PIXEL;

Line_style: The style of the line

 	 	typedef enum {
 	 	 	 LINE_STYLE_SOLID = 0,
 	 	 	 LINE_STYLE_DOTTED,
 	 	} LINE_STYLE;

Draw rectangle

Draw a rectangle from (Xstart, Ystart) to (Xend, Yend).

void Paint_DrawRectangle(UWORD Xstart, UWORD Ystart, UWORD Xend, UWORD Yend, UWORD Color, DOT_PIXEL Line_width, DRAW_FILL Draw_Fill)

Xstart: Start coordinate of X-axes of the rectangle
Ystart: Start coordinate of Y-axes of the rectangle
Xend: End coordinate of X-end of the rectangle
Yend: End coordinate of Y-end of the rectangle
Color: color of the rectangle
Line_width: The width of edges, 8 sides are available;

 	 	typedef enum {
 	 	 	 DOT_PIXEL_1X1  = 1,	// 1 x 1
 	 	 	 DOT_PIXEL_2X2  , 		// 2 X 2
 	 	 	 DOT_PIXEL_3X3  ,		// 3 X 3
 	 	 	 DOT_PIXEL_4X4  ,		// 4 X 4
 	 	 	 DOT_PIXEL_5X5  , 		// 5 X 5
 	 	 	 DOT_PIXEL_6X6  , 		// 6 X 6
 	 	 	 DOT_PIXEL_7X7  , 		// 7 X 7
 	 	 	 DOT_PIXEL_8X8  , 		// 8 X 8
 	 	} DOT_PIXEL;

Draw_Fill: set the rectangle full or empty.

typedef enum {
 	DRAW_FILL_EMPTY = 0,
 	DRAW_FILL_FULL,
} DRAW_FILL;

Draw circle: Draw a circle: In the image cache, with (X_Center Y_Center) as the center, draw a circle with a radius of Radius, you can choose the color, the width of the line, whether to fill the inside of the circle

void Paint_DrawCircle(UWORD X_Center, UWORD Y_Center, UWORD Radius, UWORD Color, DOT_PIXEL Line_width, DRAW_FILL Draw_Fill)
parameter:
 X_Center: X coordinate of the center of the circle
 Y_Center: Y coordinate of the center of the circle
 Radius: the radius of the circle
 Color: fill color
 Line_width: the width of the arc, providing 8 default widths
 typedef enum {
                 DOT_PIXEL_1X1 = 1, // 1 x 1
                 DOT_PIXEL_2X2 , // 2 X 2
                 DOT_PIXEL_3X3 , // 3 X 3
                 DOT_PIXEL_4X4 , // 4 X 4
                 DOT_PIXEL_5X5 , // 5 X 5
                 DOT_PIXEL_6X6 , // 6 X 6
                 DOT_PIXEL_7X7 , // 7 X 7
                 DOT_PIXEL_8X8 , // 8 X 8
 } DOT_PIXEL;
 Draw_Fill: Fill, whether to fill the inside of the circle
          typedef enum {
                        DRAW_FILL_EMPTY = 0,
                        DRAW_FILL_FULL,
 } DRAW_FILL;

Draw character (ASCII)

Set(Xstart Ystart) as letf-top point, draw a ASCII character.

void Paint_DrawChar(UWORD Xstart, UWORD Ystart, const char Ascii_Char, sFONT* Font, UWORD Color_Foreground, UWORD Color_Background)

Parameter:

Xstart: X coordinate of the left-top pixel of character;
Ystart: Y coordinate of the left-top pixel of character;
Ascii_Char：Ascii character;
Font: 5 fonts are available;
font12：7*12

font16：11*16

font20：14*20

font24：17*24
Color_Foreground: color of character;
Color_Background: color of background;

Draw String

Set point (Xstart Ystart) as the left-top pixel, draw a string.

void Paint_DrawString_EN(UWORD Xstart, UWORD Ystart, const char * pString, sFONT* Font, UWORD Color_Foreground, UWORD Color_Background)

Parameters:

Xstart: X coordinate of left-top pixel of characters;
Ystart: Y coordinate of left-top pixel of characters;
pString：Pointer of string
Font: 5 fonts are available:
font8：5*8

font12：7*12

font16：11*16

font20：14*20

font24：17*24
Color_Foreground: color of string
Color_Background: color of the background

Draw Chinese characters

this function is used to draw Chinese fonts based ON GB2312 fonts.

void Paint_DrawString_CN(UWORD Xstart, UWORD Ystart, const char * pString, cFONT* font, UWORD Color_Foreground, UWORD Color_Background)

Parameters:

Xstart: Coordinate of left-top pixel of characters;
Ystart: Coordinate of left-top pixel of characters;
pString：Pointer of string;
Font: GB2312 fonts：
font12CN：11*21(ascii)，16*21 (Chinese)

font24CN：24*41(ascii)，32*41 (Chinese)
Color_Foreground: color of string
Color_Background: color of the background

Draw number

Draw a string of numbers, (Xstart, Ystart) is the left-top pixel.

void Paint_DrawNum(UWORD Xpoint, UWORD Ypoint, int32_t Nummber, sFONT* Font, UWORD Color_Foreground, UWORD Color_Background)

Parameter:

Xstart: X coordinate of left-top pixel;
Ystart: Y coordicate of left-to pixel;
Nummber: the numbers displayed. the numbers are saved in int format, the maximum is 2147483647;
Font: 5 fonts are available：
font8：5*8

font12：7*12

font16：11*16

font20：14*20

font24：17*24
Color_Foreground: color of font;
Color_Background: color of background;

Draw image

Send image data of BMP file to buffer

void Paint_DrawBitMap(const unsigned char* image_buffer)

Parameters:

image_buffer: adrress of image data in buffer

Read local bmp picture and write it to buffer

Linux platform like Jetson Nano and Raspberry Pi support to directly operate bmp pictures Raspberry Pi & Jetson Nano：RaspberryPi&JetsonNano\c\lib\GUI\GUI_BMPfile.c(.h)

UBYTE GUI_ReadBmp(const char *path, UWORD Xstart, UWORD Ystart)

Parameters:

path：The path of BMP pictures
Xstart: X coordination of left-top of picture, default 0;
Ystart: Y coordination of left-top of picture, default 0;

Testing Code

The first three chapters introduce the classic linux three-layer code structure, here is a little explanation of the user test code
For Raspberry Pi and Jetson Nano, in the directory: RaspberryPi_JetsonNano\c\examples, for all test codes, multiple shields can be made in main.c in this directory;
If you need to run the 7.5inch e-paper test program, you need to remove the 42 line shield

//EPD_5in65f_test();

to

EPD_5in65f_test();

Then compile it again and run

make clean
make
sudo ./epd

Python

For Jetson Nano\Raspberry Pi, based on python2.7 and python3
For python, its calls are not as complicated as C
Raspberry Pi and Jetson Nano: RaspberryPi_JetsonNano\python\lib\

Bottom Interface

The epdconfig.py file encapsulates the underlying interface

Initialize module and exit handle：

def module_init()
def module_exit()

Note:
1. The functions are used to set GPIP before and after driving e-Paper
2. If the board you have is printed with Rev2.1, module enter low-ultra mode after Module_Exit(). (as we test, the current is about 0 in this mode);

GPIO Read/Write：

def  digital_write(pin, value)
def  digital_read(pin)

SPI Write data:

def spi_writebyte(data)

Driver Interface

epdxxx.py (xxx means size, if it is 2.13inch e-paper, it is epd2in13.py, and so on)

Initailize e-paper: this function should be used at the begining. It can also be used to wake up e-Paper from Sleep mode.

#For 2.13inch e-Paper、2.9inch e-Paper
def init(self, update) #  Choose lut_full_update or lut_partial_update
#Other type
def init(self)

Clear e-paper: This function is used to clear e-Paper to white;

def Clear(self)
def Clear(self, color) # Some types of e-Paper should use this function to clear screen

Convert image to arrays

def getbuffer(self, image)

Transmit one frame of image data and display

#For two-color e-paper
def display(self, image)

#Because that controllers of 2.13inch e-paper are updated, when partial refresh, they should first use displayPartBaseImage() to display static background, then use displayPart() to dynamaticlly display.
def displayPartBaseImage(self, image)
def displayPart(self, image)

Enter sleep mode

def sleep(self)

Testing Function

epd_xxx_test.py (xxx means dimension)python examples are saved in directory：
Raspberry Pi and Jetson Nano：RaspberryPi&JetsonNano\python\examples\

If the python installed in your OS is python2, you should run examples like below：

sudo python epd_2in13_V2_test.py

If it is python3, the commands should be:

sudo python3 epd_2in13-V2_test.py

Orientation

To rotate the display, you can use transpose function like blackimage = blackimage.transpose(Image.ROTATE_270):

blackimage = blackimage.transpose(Image.ROTATE_270) 
redimage = redimage.transpose(Image.ROTATE_270)
#Support ROTATE_90, ROTATE_180, ROTATE_270

The rotation effect, taking 1.54B as an example, is 0°, 90°, 180°, 270° in sequence

GUI

Python has a powerful PIL library, which can be used directly to drawing figures. Here we use it for drawing

Install the library firstly

sudo apt-get install python3-pil

Import the library

from PIL import Image,ImageDraw,ImageFont

Image: library; ImageDraw: drawing function; ImageFont: fonts

Set image buffer for drawing.

image = Image.new('1', (epd.width, epd.height), 255)  # 255: clear the frame

The first parameter is the depth of color, 1 means 2 grayscale. The second parameter is a tuple of image size. The third parameter is color of the image, 0 is black and 255 is white.

Create an image object.

draw = ImageDraw.Draw(image)

Draw rectangle

draw.rectangle((0, 10, 200, 34), fill = 0)

The first parameter is a tuple of coordination. 0, 10 is the top-left point of rectangle, 200, 34) is the right-bottom point. fille = 0 set the filled color to black.

Draw line

draw.line((16, 60, 56, 60), fill = 0)

The first parameter is a type of coordination, 16, 60 is the begin point, 200, 34 is the end point. fill=0 set the line to black

Draw circle

draw.arc((90, 60, 150, 120), 0, 360, fill = 0)

This function is used to draw a encircle of a square. The first parameter is a tuple of coordination of the square. the degree of the circle is 0 to 360 °, fille=0 set the circle to black.
If the figure is not square according to the coordination, you will get an ellipse.。

Besides the arc function, you can also use the chord function for drawing solid circle.

draw.chord((90, 130, 150, 190), 0, 360, fill = 0)

The first parameter is the coordination of the enclosing rectangle. The second and third parameters are the beginning and end degrees of the circle. The fourth parameter is the fill color of the circle.

Character

You can directkt import ImageFont model for drawing characters:

font = ImageFont.truetype(os.path.join(picdir, 'Font.ttc'), 24)

You can use the fonts of Windows or other fonts which is in ttc format.

To draw English character, you can directly use the fonts; for Chinese character, you need to add a symbol u:

draw.text((8, 12), 'hello world', font = font, fill = 255)
draw.text((8, 36), u'微雪电子', font = font, fill = 0)

The first parameter is a tuple of coordination of character, the second parameter is the font and las one is set the color.

Read local picture

image = Image.open(os.path.join(picdir, 'lin54.bmp'))

The parameter is the path of picture.

Other functions.

For more information about the PIL library, you can search online.

Jetson Nano Developer Kit

The example for Jetson Nano use software SPI, speed of sfotware SPI is a little slow

Hardware connection

Jetson Nano's 40PIN GPIO is compatible with Raspberry PI, and API of Jetson.GPIo is same as RPi.GPIO, therefore, the pin numbers of Jetson nano are same as Raspberry Pi's

Connect to Jetson Nano
e-Paper	Jetson Nano Developer Kit
e-Paper	BCM2835	Board
VCC	3.3V	3.3V
GND	GND	GND
DIN	10(SPI0_MOSI)	19
CLK	11(SPI0_SCK	23
CS	8(SPI0_CS0)	24
DC	25	22
RST	17	11
BUSY	24	18

Software setting

Open terminal, and install GPIO libraries :

sudo apt-get update
sudo apt-get install python3-pip
sudo pip3 install Jetson.GPIO
sudo groupadd -f -r gpio
sudo usermod -a -G gpio your_user_name
sudo cp /opt/nvidia/jetson-gpio/etc/99-gpio.rules /etc/udev/rules.d/
sudo udevadm control --reload-rules && sudo udevadm trigger

Note： your_user_name is the user name of your Jetson, for example:waveshare

Install I2C libraries

sudo apt-get install python-smbus

Install PIL libraries

sudo apt-get install python3-pil
sudo apt-get install python3-numpy

Download Testing Program

Open a linux terminal and execute:
Method 1: Download from our official website, it is recommended to use it.

sudo apt-get install p7zip-full
sudo wget  https://files.waveshare.com/upload/3/39/E-Paper_code.7z
7z x E-Paper_code.7z -O./e-Paper
cd e-Paper/RaspberryPi_JetsonNano/

Method 2: Using the github repository, there may be a delay in the update of github, it is recommended to use method 1

sudo git clone https://github.com/waveshare/e-Paper
cd e-Paper/RaspberryPi_JetsonNano/

Run the Test Program

Please execute the following commands under RaspberryPi_JetsonNano, otherwise, the directory will not be indexed

C

Modify the main.c file for corresponding e-Paper

cd c
sudo nano examples/main.c

If you are using 2.7inch e-paper, then remove the // in front of the EPD_2IN7_test() function, then press ctrl+c, then press Y and press Enter to save and exit, as shown:

Supporting Types

1.02inch（128 × 80）

EPD_1in02d_test()：Example for 1.02inch e-Paper/1.02inch e-Paper Module

1.54inch（1.54inch e-paper c：152 × 152，others：200 × 200）

EPD_1in54_test()： Example for 1.54inch e-paper V1（Balck/White）: This version was discontinued.
EPD_1in54_V2_test(): Example for 1.54inch e-paper V2（Balck/White): Purchase date later than November 2019 is the V2 version, the current shipping version has the V2 logo on the back.
EPD_1in54b_test()： Example for 1.54inch e-paper B（Black/White/Red). It is currently out of production.
EPD_1in54b_V2_test(): Example for 1.54inch e-Paper B V2 (Black/White/Red). The purchase date later than November 2019 is the V2 version, the current shipping version has the V2 logo on the back;
EPD_1in54c_test()： Example for 1.54inch e-paper C（Black/White/Red）;

1.64inch（168 × 168）

EPD_1in64g_test(): Example for 1.64inch e-paper G (Black/White/Red/Yellow)

2.7inch（264 × 176）

EPD_2in7_test(): Example for 2.7inch e-paper（Black/White）;
EPD_2in7b_test(): Example for 2.7inch e-paper B（Black/White/Red）;
EPD_2in7b_V2_test(): Example for 2.7inch e-paper B V2（Black/White/Red). The purchase date is later than February 2021 is the V2 version, the current shipping version has the V2 logo on the back;

2.9inch (296 × 128)

EPD_2in9_test(): Example for 2.9inch e-paper (Black/White), this version was discontinued.
EPD_2in9_V2_test(): Example for 2.9inch e-paper V2（Black/White）; The purchase date is later than December 2020 is the V2 version, the current shipping version has the V2 logo on the back;
EPD_2in9bc_test(): Example for 2.9inch e-paper B（Balck/White/Red） and 2.9inch e-paper C（Black/White/Yellow）;
EPD_2in9b_V3_test(): Example for 2.9inch e-paper B V3 （Balck/White/Red）; Purchase date later than July 2020 is the V3 version, the current shipping version has the V3 logo on the back;
EPD_2in9d_test(): Example for 2.9inch e-paper D（Black/White）;

2.13inch（2.13inch e-Paper：250 × 122，others：212 × 104）

EPD_2in13_test(): Example for 2.13inch e-paper V1（Black/White）, this version was discontinued.
EPD_2in13_V2_test(): Example for 2.13inch e-paper V2（Black/White）. The purchase date is later than May 2019, the V2 version is currently discontinued, and the V2 logo is affixed on the back;
EPD_2in13_V3_test(): Example for 2.13inch e-paper V3（Black/White） This is the current version with sticker V3 on the backside (2020-07-29)；
EPD_2in13bc_test()：Example for 2.13inch e-paper B（Black/White/Red）and 2.13inch e-paper C（Blackj/White/Yellow）;
EPD_2in13b_V3_test()：Example for 2.13inch e-paper B V3（Black/White/Red）Purchase date later than April 2020 is the V3 version, the current shipping version has the V3 logo on the back;
EPD_2in13d_test()： Example for 2.13inch e-paper D（Black/White）;

2.66inch (152 × 296)

EPD_2in66_test(): Example for 2.66inch e-Paper (Black/White);
EPD_2in66b_test(): Example for 2.66inch e-Paper B (Black/White/Red);

3inch (400 × 168)

EPD_3in0g_test(): Example for 3inch e-Paper G(Black/White/Red/Yellow);

3.52inch (360 × 240)

EPD_3in52_test(): Example for 3.52inch e-Paper (Black/White);

3.7inch (280 × 480)

EPD_3in7_test(): Example for 3.7inch e-Paper(Black/White);

4.01inch (640 × 400)

EPD_4in01_test(): Example for the 4.01inch e-Paper HAT (F) (Black/White/Green/Blue/Red/Yellow/Orange);

4.2inch（400 × 300）

EPD_4in2_test()： Example for 4.2inch e-paper（Black/White）；
EPD_4in2bc_test()： Example for 4.2inch e-paper B（Black/White/Red）；
EPD_4in2b_V2_test()： Example for 4.2inch e-paper B V2（Black/White/Red）. The purchase date is later than November 2020, it is the V2 version, and the current shipping version has the V2 logo on the back;

5.65inch (600 × 558)

EPD_5in65f_test(): Example for for 5.65inch e-Paper F (Black/White/Green/Blue/Red/Yellow/Orange);

5.83inch（600 × 448）

EPD_5in83_test()： Example for 5.83inch e-paper（Black/White）, It is currently out of production.
EPD_5in83_V2_test()： Example for 5.83inch e-paper V2（Black/White）, The purchase date is later than December 2020 is the V2 version, the current shipping version, with the V2 logo on the back.
EPD_5in83bc_test()： Example for 5.83inch e-paper B（Black/White/Red）and 5.83inch e-paper C（Black/White/Yellow）;
EPD_5in83b_V2_test()： Example for 5.83inch e-paper B V2（Black/White/Red). The purchase date is later than August 2020 for the V2 version, the current shipping version, with the V2 logo on the back.

7.3inch (800 × 480)

epd_7in3g_test.py: Example for 7inch3 e-paper G (Black/White/Red/Yellow).

7.5inch（V1：640 × 384， V2：800 × 480）

EPD_7in5_test()： Example for 7.5inch e-paper（Black/White）. The purchase date is earlier than 2019-12-07 as the V1 version, which is currently discontinued.
EPD_7in5bc_test()： For example for 7.5inch e-paper B（Black/White/Red）and 7.5inch e-paper C（Black/White/Yellow）, The purchase date later than 2019-12-07 is the V2 version, and the current shipping version has the V2 logo on the back;
EPD_7in5_V2_test()： Example for 7.5inch e-paper V2（Black/White）. The purchase date of 7.5inch e-paper B is earlier than 2019-12-07, which is the V1 version, which is currently discontinued, and 7.5inch e-paper C is normally available.
EPD_7in5bc_V2_test()： Example for 7.5inch e-paper B V2（Black/White/Red）; The purchase date is later than 2019-12-07 is the V2 version, with the V2 logo on the back; the purchase date is later than March 2021 is the V3 version, the current 7.5inch e-paper B shipping version, with the V3 logo on the back, the same use this program;

7.5inch (880 × 528)

EPD_7in5_HD_test(): Example for 7.5inch e-Paper HD (Black/White);
EPD_7in5b_HD_test(): Example for 7.5inch e-Paper B HD (Black/White/Red);

*Note: The above time is for reference only, please refer to the screen logo for the specific version

Recompile, the compilation process may take a few seconds

Return to the c directory and run the following command
make clean
make
sudo ./epd

Python

Enter the python program directory and run the command ls -al

cd python/examples
ls -al

File:E-paper rpi change python01.png

Support Types

1.02inch（128×80）

epd_1in02_test.py：Example for 1.02inch e-Paper/1.02inch e-Paper Module

1.54inch（1.54inch e-paper c：152×152，others：200×200）

epd_1in54_test.py： Example for 1.54inch e-paper V1（Balck/White）: This version is stopped production which can be bought before 2019-11-22；
epd_1in54_V2_test.py： Example for 1.54inch e-paper V2（Balck/White): This is the current version which can be bought now (2020-07-29). The e-Paper has V2 sticker on the backside.
epd_1in54b_test.py： Example for 1.54inch e-paper B（Black/White/Red). It is currently out of production.
epd_1in54b_V2_test.py： Example for 1.54inch e-paper B V2 (Black/White/Red). The purchase date is later than April 2020 is the V2 version, the current shipping version has the V2 logo on the back;
epd_1in54c_test.py： Example for 1.54inch e-paper C（Black/White/Red).

1.64inch（168 × 168）

epd_1in64g_test.py: Example for 1.64inch e-paper G (Black/White/Red/Yellow)

2.7inch（264×176）

epd_2in7_test.py： Example for 2.7inch e-paper（Black/White）;
epd_2in7b_test.py： Example for 2.7inch e-paper B（Black/White/Red）;
epd_2in7b_V2_test.py： Example for 2.7inch e-paper B V2 (Black/White/Red). The purchase date is later than February 2021 is the V2 version, the current shipping version has the V2 logo on the back;

2.9inch（296×128）

epd_2in9_test.py: Example for 2.9inch e-paper（Black/White）; It is currently out of production.
epd_2in9_V2_test.py: Example for 2.9inch e-paper V2（Black/White）; The purchase date is later than December 2020 is the V2 version, the current shipping version, with the V2 logo on the back.
epd_2in9bc_test.py： Example for 2.9inch e-paper B（Balck/White/Red） and 2.9inch e-paper C（Black/White/Yellow）;
epd_2in9b_V3_test.py： Example for 2.9inch e-paper B V3（Balck/White/Red; The purchase date later than July 2020 is the V3 version, the current shipping version has the V3 logo on the back;
epd_2in9d_test.py： Example for 2.9inch e-paper D（Black/White）;

2.13inch（2.13inch e-Paper：250×122，others：212×104）

epd_2in13_test.py： Example for 2.13inch e-paper V1（Black/White）, this version is stopped production and it can be bought before 019-05-15;
epd_2in13_V2_test.py： Example for 2.13inch e-paper V2（Black/White） This is the current version with sticker V2 on the backside (2020-07-29)；
epd_2in13_V3_test.py: Example for 2.13inch e-paper V3（Black/White）, The purchase date later than February 2022 is the V3 version, the current shipping version, with the V3 logo on the back.
epd_2in13bc_test.py： Example for 2.13inch e-paper B（Black/White/Red）and 2.13inch e-paper C（Black/White/Yellow）;
epd_2in13b_V3_test.py： Example for 2.13inch e-paper B V3（Black/White/Red）
epd_2in13d_test.py： Example for 2.13inch e-paper D（Black/White）;

2.66inch (152 x 296)

epd_2in66_test.py: Example for 2.66inch e-Paper (Black/White);
epd_2in66b_test.py: Example for 2.66inch e-Paoer (Black/White/Red);

3inch (400 × 168)

EPD_3in0g_test.py: Example for 3inch e-Paper G(Black/White/Red/Yellow);

3.52inch (360 × 240)

EPD_3in52_test.py: Example for 3.52inch e-Paper (Black/White);

3.7inch (280 x 480)

epd_3in7_test.py: Example for 3.7inch e-Paper (Black/White);

4.01inch (640x400)

epd_4in01f_test.py: Example for 4.01inch e-Paper (Seven-color);

4.2inch（400×300）

epd_4in2_test.py： Example for 4.2inch e-paper（Black/White）；
epd_4in2bc_test.py： Example for 4.2inch e-paper B（Black/White/Red）；
epd_4in2b_V2_test.py： Example for 4.2inch e-paper B V2（Black/White/Red). The purchase date is later than November 2020, it is the V2 version, and the current shipping version has the V2 logo on the back;

5.65inch (600x558)

epd_5in65f_test.py: Example for 5.65inch e-Paper F (Seven-color);

5.83inch（600×448）

epd_5in83_test.py： Example for 5.83inch e-paper（Black/White). It is currently out of production.
epd_5in83_V2_test.py： Example for 5.83inch e-paper V2（Black/White); The purchase date is later than December 2020 is the V2 version, the current shipping version has the V2 logo on the back;
epd_5in83bc_test.py： Example for 5.83inch e-paper B（Black/White/Red）and 5.83inch e-paper C（Black/White/Yellow）;
epd_5in83b_V2_test.py： Example for 5.83inch e-paper B V2（Black/White/Red). The purchase date is later than August 2020 is the V2 version, the current shipping version has the V2 logo on the back;

7.3inch (400 × 168)

epd_7in3g_test.py: Example for 7inch3 e-paper G (Black/White/Red/Yellow).

7.5inch（V1：640×384， V2：800×480）

epd_7in5_test.py： Example for 7.5inch e-paper（Black/White）, this version is stopped production and it can be bought before 2019-12-07；
epd_7in5_V2_test.py： Example for 7.5inch e-paper V2（Black/White）, This is the current version with V2 sticker on the backside (2020-07-29)
epd_7in5bc_test.py： Example for 7.5inch e-paper B（Black/White/Red）and 7.5inch e-paper C（Black/White/Yellow）, 7.5inch e-paper B V1 version is stopped production and it can be bought before 2019-12-07;
epd_7in5b_V2_test.py： Example for 7.5inch e-paper B V2（Black/White/Red）. The purchase date later than 2019-12-07 is the V2 version, with the V2 logo on the back; the purchase date later than March 2021 is the V3 version, the current 7.5inch e-paper B shipping version, with the V3 logo on the back, the same use this program.

7.5inch (HD 880 x 528)

epd_7in5_HD_test.py: Example for 7.5inch e-Paper HD (Black/White);
epd_7in5b_HD_test.py: Example for 7.5inch e-Paper B HD (Black/White/Red);

*Note: The above time is for reference only, please refer to the screen logo for the specific version

Just run the program corresponding to the screen, the program supports python2/3, take 1.54 V2 as an example

# python2
sudo python2.7 epd_1in54_V2_test.py
# python3
sudo python3 epd_1in54_V2_test.py

Description of codes (API)

The libraries for Raspberry Pi and Jetson Nano are the same. Examples contain three parts, hardware interface, EPD driver, and the GUI functions.

C

Hardware interface

Two libraries are used by C example, WiringPi, and BCM2835. The codes use wiringPi by default, if you want to use BCM2835, you can modify the RaspberryPi&JetsonNano\c\Makefile file, modify lines 13 and 14. Change it as below:

Data type

#define UBYTE   uint8_t
#define UWORD   uint16_t
#define UDOUBLE uint32_t

Init and Exit

void DEV_Module_Init(void);
void DEV_Module_Exit(void);

Note: The Init() and Exit() function are used to configure GPIOs . EPD enter sleep mode after Exit() function is used, and the consumption of e-Paper should be 0 in sleep mode if the PCB is Rev2.1 version.

GPIO Read/Write

void DEV_Digital_Write(UWORD Pin, UBYTE Value);
UBYTE DEV_Digital_Read(UWORD Pin);

SPI transmit data

void DEV_SPI_WriteByte(UBYTE Value);

EPD

e-paper driver code file, in the directory: RaspberryPi_JetsonNano\c\lib\e-Paper
As shown below:

Open .h to see the following functions

After the initialization, called when the screen starts working and after exiting sleep mode

//1.54inch e-Paper, 1.54inch e-Paper V2, 2.13inch e-Paper, 2.13inch e-Paper V2, 2.13inch e-Paper (D), 2.9inch e-Paper, 2.9inch e-Paper (D )
void EPD_xxx_Init(UBYTE Mode); // Mode = 0 global refresh initialization, Mode = 1 local refresh initialization
//other models
void EPD_xxx_Init(void);

Where xxx represents the model. If it is 2.13D, the full screen initialization is EPD_2IN13D_Init(0), the partial refresh initialization EPD_2IN13D_Init(1); if it is 1.54 V2, then EPD_1IN54_V2_Init(); if it is 7.5B, it is EPD_7IN5BC_Init(), because 7.5B and 7.5C are common The driver code, but the color displayed is different

Clear the screen, brush the ink screen to white

void EPD_xxx_Clear(void);

Where xxx represents the ink screen model. If it is 2.13D, then it is EPD_2IN9D_Clear(); if it is 7.5B, it is EPD_7IN5_Clear(), because 7.5B and 7.5C share the driver code, but the color displayed is different

Transfer a frame of picture data and open the display

//Black and white two-color ink screen
void EPD_xxx_Display(UBYTE *Image);
//Black and white red or black and white yellow ink screen
void EPD_xxx_Display(const UBYTE *blackimage, const UBYTE *ryimage);

Note that the following are special cases:

//For 2.13inch e-paper (D), 2.9inch e-paper (D) two flexible screens, partial refresh
void EPD_2IN13D_DisplayPart(UBYTE *Image);
void EPD_2IN9D_DisplayPart(UBYTE *Image);

//For 1.54inch e-paper V2 and 2.13inch e-paper V2, due to the upgrade of the control chip, for partial refresh, it is necessary to call EPD_xxx_DisplayPartBaseImage to display the static background image, that is, to perform partial refresh based on this image, and then call the dynamic EPD_xxx_DisplayPart ()

void EPD_1IN54_V2_DisplayPartBaseImage(UBYTE *Image);
void EPD_1IN54_V2_DisplayPart(UBYTE *Image);
void EPD_2IN13_V2_DisplayPart(UBYTE *Image);
void EPD_2IN13_V2_DisplayPartBaseImage(UBYTE *Image);

Enter sleep mode

void EPD_xxx_Sleep(void);

Note that after entering sleep mode, there are only two ways to work again: the first is a hardware reset, and the second is to call the initialization function again.
Where xxx represents the ink screen model. If it is 2.13D, then it is EPD_2IN13D_Sleep(); if it is 7.5B, it is EPD_7IN5BC_Sleep(), because 7.5B and 7.5C share the driver code, but the color displayed is different

GUI Functions

GUI files can be found in RaspberryPi&JetsonNano\c\lib\GUI\GUI_Paint.c(.h) directory

The fonts can be found in RaspberryPi&JetsonNano\c\lib\Fonts directory

Create an image buffer

void Paint_NewImage(UBYTE *image, UWORD Width, UWORD Height, UWORD Rotate, UWORD Color)

Image: the Image buffer
Width: width of the image
Height: Height of the image
Rotate: Rotate angle
Color: Color of the image

Select image buffer

void Paint_SelectImage(UBYTE *image)

The image buffer, it is a pointer of image buffer's first address

Rotate image

This function should be used after Paint_SelectImage()

void Paint_SetRotate(UWORD Rotate)

Rotate: The angle rotated. It should be ROTATE_0, ROTATE_90, ROTATE_180, ROTATE_270
Note: For different orientation, the position of the first pixel is different, here we take 1.54inch as example

Mirroring

void Paint_SetMirroring(UBYTE mirror)

mirror: The type of mirroring. (MIRROR_NONE, MIRROR_HORIZONTAL、MIRROR_VERTICAL、MIRROR_ORIGIN)

Set Pixel

This function is used to set the position and types of the pixel

void Paint_SetPixel(UWORD Xpoint, UWORD Ypoint, UWORD Color)

Xpoint: The x-axis coordination of pixel
Ypoint: The y-axis coordination of pixel
Color: The color of the pixel

Clear

This function is used to clear the e-Paper

void Paint_Clear(UWORD Color)

Color: The color of the display

Clear window

This function is used to clear a partial area

void Paint_ClearWindows(UWORD Xstart, UWORD Ystart, UWORD Xend, UWORD Yend, UWORD Color)

Xstart: The x-axis coordination of the start point
Ystart: The y-axis coordination of the start point
Xend: The x-axis coordination of the end point
Yend: The y-axis coordination of the end point
Color: The color of the windows

Draw point

This function is used to draw points.

void Paint_DrawPoint(UWORD Xpoint, UWORD Ypoint, UWORD Color, DOT_PIXEL Dot_Pixel, DOT_STYLE Dot_Style)

Xpoint: The x-axis coordination of point
Ypoint: The y-axis coordination of point
Dot_Pixel: The size of the point

 	 	 typedef enum {
 	 	 	 DOT_PIXEL_1X1  = 1,	// 1 x 1
 	 	 	 DOT_PIXEL_2X2  , 		// 2 X 2
 	 	 	 DOT_PIXEL_3X3  , 	 	// 3 X 3
 	 	 	 DOT_PIXEL_4X4  , 	 	// 4 X 4
 	 	 	 DOT_PIXEL_5X5  , 		// 5 X 5
 	 	 	 DOT_PIXEL_6X6  , 		// 6 X 6
 	 	 	 DOT_PIXEL_7X7  , 		// 7 X 7
 	 	 	 DOT_PIXEL_8X8  , 		// 8 X 8
 	 	} DOT_PIXEL;

Dot_Style: The style of the point

 	 	typedef enum {
 	 	   DOT_FILL_AROUND  = 1,		
 	 	   DOT_FILL_RIGHTUP,
 	 	} DOT_STYLE;

Drawn Line

void Paint_DrawLine(UWORD Xstart, UWORD Ystart, UWORD Xend, UWORD Yend, UWORD Color, LINE_STYLE Line_Style , LINE_STYLE Line_Style)

This function is used to draw a line

Xstart: The start x-axis coordination of the line
Ystart: The start y-axis coordination of the line
Xend: The end x-axis coordination of the line
Yend: The end y-axis coordination of the line
Line_width: The width of the line

 	 	typedef enum {
 	 	 	 DOT_PIXEL_1X1  = 1,	// 1 x 1
 	 	 	 DOT_PIXEL_2X2  , 		// 2 X 2
 	 	 	 DOT_PIXEL_3X3  ,		// 3 X 3
 	 	 	 DOT_PIXEL_4X4  ,		// 4 X 4
 	 	 	 DOT_PIXEL_5X5  , 		// 5 X 5
 	 	 	 DOT_PIXEL_6X6  , 		// 6 X 6
 	 	 	 DOT_PIXEL_7X7  , 		// 7 X 7
 	 	 	 DOT_PIXEL_8X8  , 		// 8 X 8
 	 	} DOT_PIXEL;

Line_style: The style of the line

 	 	typedef enum {
 	 	 	 LINE_STYLE_SOLID = 0,
 	 	 	 LINE_STYLE_DOTTED,
 	 	} LINE_STYLE;

Draw rectangle

Draw a rectangle from (Xstart, Ystart) to (Xend, Yend).

void Paint_DrawRectangle(UWORD Xstart, UWORD Ystart, UWORD Xend, UWORD Yend, UWORD Color, DOT_PIXEL Line_width, DRAW_FILL Draw_Fill)

Xstart: Start coordinate of X-axes of the rectangle
Ystart: Start coordinate of Y-axes of the rectangle
Xend: End coordinate of X-end of the rectangle
Yend: End coordinate of Y-end of the rectangle
Color: color of the rectangle
Line_width: The width of edges, 8 sides are available;

 	 	typedef enum {
 	 	 	 DOT_PIXEL_1X1  = 1,	// 1 x 1
 	 	 	 DOT_PIXEL_2X2  , 		// 2 X 2
 	 	 	 DOT_PIXEL_3X3  ,		// 3 X 3
 	 	 	 DOT_PIXEL_4X4  ,		// 4 X 4
 	 	 	 DOT_PIXEL_5X5  , 		// 5 X 5
 	 	 	 DOT_PIXEL_6X6  , 		// 6 X 6
 	 	 	 DOT_PIXEL_7X7  , 		// 7 X 7
 	 	 	 DOT_PIXEL_8X8  , 		// 8 X 8
 	 	} DOT_PIXEL;

Draw_Fill: set the rectangle full or empty.

typedef enum {
 	DRAW_FILL_EMPTY = 0,
 	DRAW_FILL_FULL,
} DRAW_FILL;

Draw a circle: In the image cache, with (X_Center Y_Center) as the center, draw a circle with a radius of Radius, you can choose the color, the width of the line, whether to fill the inside of the circle

void Paint_DrawCircle(UWORD X_Center, UWORD Y_Center, UWORD Radius, UWORD Color, DOT_PIXEL Line_width, DRAW_FILL Draw_Fill)
parameter:
          X_Center: X coordinate of the center of the circle
          Y_Center: Y coordinate of the center of the circle
          Radius: the radius of the circle
          Color: fill color
          Line_width: the width of the arc, providing 8 default widths
                       typedef enum {
                                      DOT_PIXEL_1X1 = 1, // 1 x 1
                                      DOT_PIXEL_2X2 , // 2 X 2
                                      DOT_PIXEL_3X3 , // 3 X 3
                                      DOT_PIXEL_4X4 , // 4 X 4
                                      DOT_PIXEL_5X5 , // 5 X 5
                                      DOT_PIXEL_6X6 , // 6 X 6
                                      DOT_PIXEL_7X7 , // 7 X 7
                                      DOT_PIXEL_8X8 , // 8 X 8
 } DOT_PIXEL;
 Draw_Fill: Fill, whether to fill the inside of the circle
            typedef enum {
                          DRAW_FILL_EMPTY = 0,
                          DRAW_FILL_FULL,
 } DRAW_FILL;

Draw character (ASCII)

Set(Xstart Ystart) as letf-top point, draw a ASCII character.

void Paint_DrawChar(UWORD Xstart, UWORD Ystart, const char Ascii_Char, sFONT* Font, UWORD Color_Foreground, UWORD Color_Background)

Parameter:

Xstart: X coordinate of the left-top pixel of character;
Ystart: Y coordinate of the left-top pixel of character;
Ascii_Char：Ascii character;
Font: 5 fonts are available;
font12：7*12

font16：11*16

font20：14*20

font24：17*24
Color_Foreground: color of character;
Color_Background: color of background;

Draw String

Set point (Xstart Ystart) as the left-top pixel, draw a string.

void Paint_DrawString_EN(UWORD Xstart, UWORD Ystart, const char * pString, sFONT* Font, UWORD Color_Foreground, UWORD Color_Background)

Parameters:

Xstart: X coordinate of left-top pixel of characters;
Ystart: Y coordinate of left-top pixel of characters;
pString：Pointer of string
Font: 5 fonts are available:
font8：5*8

font12：7*12

font16：11*16

font20：14*20

font24：17*24
Color_Foreground: color of string
Color_Background: color of the background

Draw Chinese characters

this function is used to draw Chinese fonts based ON GB2312 fonts.

void Paint_DrawString_CN(UWORD Xstart, UWORD Ystart, const char * pString, cFONT* font, UWORD Color_Foreground, UWORD Color_Background)

Parameters:

Xstart: Coordinate of left-top pixel of characters;
Ystart: Coordinate of left-top pixel of characters;
pString：Pointer of string;
Font: GB2312 fonts：
font12CN：11*21(ascii)，16*21 (Chinese)

font24CN：24*41(ascii)，32*41 (Chinese)
Color_Foreground: color of string
Color_Background: color of the background

Draw number

Draw a string of numbers, (Xstart, Ystart) is the left-top pixel.

void Paint_DrawNum(UWORD Xpoint, UWORD Ypoint, int32_t Nummber, sFONT* Font, UWORD Color_Foreground, UWORD Color_Background)

Parameter:

Xstart: X coordinate of left-top pixel;
Ystart: Y coordicate of left-to pixel;
Nummber: the numbers displayed. the numbers are saved in int format, the maximum is 2147483647;
Font: 5 fonts are available：
font8：5*8

font12：7*12

font16：11*16

font20：14*20

font24：17*24
Color_Foreground: color of font;
Color_Background: color of background;

Draw image

Send image data of BMP file to buffer

void Paint_DrawBitMap(const unsigned char* image_buffer)

Parameters:

image_buffer: adrress of image data in buffer

Read local bmp picture and write it to buffer

Linux platform like Jetson Nano and Raspberry Pi support to directly operate bmp pictures Raspberry Pi & Jetson Nano：RaspberryPi&JetsonNano\c\lib\GUI\GUI_BMPfile.c(.h)

UBYTE GUI_ReadBmp(const char *path, UWORD Xstart, UWORD Ystart)

Parameters:

path：The path of BMP pictures
Xstart: X coordination of left-top of picture, default 0;
Ystart: Y coordination of left-top of picture, default 0;

Testing Code

The first three chapters introduce the classic linux three-layer code structure, here is a little explanation of the user test code
For Raspberry Pi and Jetson Nano, in the directory: RaspberryPi_JetsonNano\c\examples, for all test codes, multiple shields can be made in main.c in this directory;
If you need to run the 7.5inch e-paper test program, you need to remove the 42 line shield

// EPD_7in5_test();

change to

EPD_7in5_test();

Re-execute in linux command mode as follows:

make clean
make
sudo ./epd

Python

For Jetson Nano\Raspberry Pi, based on python2.7 and python3
python is easy to use than c codes
Raspberry Pi and Jetson Nano：RaspberryPi&JetsonNano\python\lib\

Bottom Interface

The epdconfig.py file in the underlying interface

Initialize module and exit handle：

def module_init()
def module_exit()

Note:
1. The functions are used to set GPIP before and after driving e-Paper
2. If the board you have is printed with Rev2.1, the module enter low-ultra mode after Module_Exit(). (as we test, the current is about 0 in this mode);

GPIO Read/Write：

def  digital_write(pin, value)
def  digital_read(pin)

SPI Write data:

def spi_writebyte(data)

Driver Interface

epdxxx.py (xxx means size, if it is 2.13inch e-paper, it is epd2in13.py, and so on)

Initailize e-paper: this function should be used at the begining. It can also be used to wake up e-Paper from Sleep mode.

#For 2.13inch e-Paper、2.9inch e-Paper
def init(self, update) #  Choose lut_full_update or lut_partial_update
#Other type
def init(self)

Clear e-paper: This function is used to clear e-Paper to white;

def Clear(self)
def Clear(self, color) # Some types of e-Paper should use this function to clear screen

Convert image to arrays

def getbuffer(self, image)

Transmit one frame of image data and display

#For two-color e-paper
def display(self, image)

#Because that controllers of 2.13inch e-paper are updated, when partial refresh, they should first use displayPartBaseImage() to display static background, then use displayPart() to dynamaticlly display.
def displayPartBaseImage(self, image)
def displayPart(self, image)

Enter sleep mode

def sleep(self)

Testing Function

epd_xxx_test.py (xxx means size, if it is 2.13inch e-paper, it is epd_2in13_test.py, and so on)
python is in the following directory:
Raspberry Pi and Jetson Nano: RaspberryPi_JetsonNano\python\examples\

If your python version is python2, and you need to run the 7.5inch e-paper test program, re-execute it in the linux command mode as follows:

sudo python epd_7in5_test.py

If your python version is python3, and you need to run the 7.5inch e-paper test program, re-execute it in the linux command mode as follows:

sudo python3 epd_7in5_test.py

Orientation

To rotate the display, you can use transpose function like blackimage = blackimage.transpose(Image.ROTATE_270):

blackimage = blackimage.transpose(Image.ROTATE_270) 
redimage = redimage.transpose(Image.ROTATE_270)
#Support ROTATE_90, ROTATE_180, ROTATE_270

GUI

Python has a powerful PIL library, which can be used directly to drawing figures. Here we use it for drawing

Install the library firstly

sudo apt-get install python3-pil

Import the library

from PIL import Image,ImageDraw,ImageFont

Image: library; ImageDraw: drawing function; ImageFont: fonts

Set image buffer for drawing.

image = Image.new('1', (epd.width, epd.height), 255)  # 255: clear the frame

The first parameter is the depth of color, 1 means 2 grayscale. The second parameter is a tuple of image size. The third parameter is color of the image, 0 is black and 255 is white.

Create an image object.

draw = ImageDraw.Draw(image)

Draw rectangle

draw.rectangle((0, 10, 200, 34), fill = 0)

The first parameter is a tuple of coordination. 0, 10 is the top-left point of rectangle, 200, 34) is the right-bottom point. fille = 0 set the filled color to black.

Draw line

draw.line((16, 60, 56, 60), fill = 0)

The first parameter is a type of coordination, 16, 60 is the beginning point, 200, 34 is the endpoint. fill=0 set the line to black

Draw circle

draw.arc((90, 60, 150, 120), 0, 360, fill = 0)

This function is used to draw a encircle of a square. The first parameter is a tuple of coordination of the square. the degree of the circle is 0 to 360 °, fille=0 set the circle to black.
If the figure is not square according to the coordination, you will get an ellipse.。

Besides the arc function, you can also use the chord function for drawing a solid circle.

draw.chord((90, 130, 150, 190), 0, 360, fill = 0)

The first parameter is the coordination of the enclosing rectangle. The second and third parameters are the beginning and end degrees of the circle. The fourth parameter is the fill color of the circle.

Character

You can directkt import ImageFont model for drawing characters:

font = ImageFont.truetype(os.path.join(picdir, 'Font.ttc'), 24)

You can use the fonts of Windows or other fonts which is in ttc format.

To draw English character, you can directly use the fonts; for Chinese character, you need to add a symbol u:

draw.text((8, 12), 'hello world', font = font, fill = 255)
draw.text((8, 36), u'微雪电子', font = font, fill = 0)

The first parameter is a tuple of 2 elements, with (8, 12) as the left vertex, fill is the font color, and the first sentence fill=255, so it seems that it will not be displayed. The second sentence shows 微雪电子.

Read local picture

image = Image.open(os.path.join(picdir, 'lin54.bmp'))

The parameter is the path of picture.

Other functions.

For more information about the PIL library, you can search online

User Guides of STM32

Hardware connection

The demo codes we provided are based on STM32F103ZET6, the connection table is also based on STM32F103ZET6, if you want to use another chip, you need to port the codes and change the connection according to the actual situation.

Connect to STM32F103ZET
e-Paper	STM32
VCC	3.3V
GND	GND
DIN	PA7
CLK	PA5
CS	PA4
DC	PA2
RST	PA1
BUSY	PA3

If the STM32 board you have is STM32F103RB, you can refer to the guides of E-Paper Shield.

Software settings

The codes are based on HAL library. Download the codes and the project files are saved under the STM32\STM32-F103ZET6\MDK-ARM directory.

Modify main.c， define the line according to the e-paper type and re-compile project and download.

Supporting types

1.02inch（128 × 80）：

EPD_1in02d_test()：Example for 1.02inch e-Paper/1.02inch e-Paper Module

1.54inch（1.54inch e-paper c：152 × 152，others：200 × 200）：

EPD_1in54_test()： Example for 1.54inch e-paper V1（Balck/White）: This version is stopped production which can be bought before 2019-11-22；
EPD_1in54_V2_test(): Example for 1.54inch e-paper V2（Balck/White): This is the current version that can be bought now (2020-07-29). The e-Paper has V2 sticker on the backside.
EPD_1in54b_test()： Example for 1.54inch e-paper B（Black/White/Red). It is currently out of production.
EPD_1in54b_V2_test(): Example for 1.54inch e-Paper B V2 (Black/White/Red). The purchase date later than November 2019 is the V2 version, the current shipping version has the V2 logo on the back;
EPD_1in54c_test()： Example for 1.54inch e-paper C（Black/White/Red）;

1.64inch（168 × 168）

EPD_1in64g_test(): Example for 1.64inch e-paper G (Black/White/Red/Yellow)

2.7inch（264 × 176）

EPD_2in7_test(): Example for 2.7inch e-paper（Black/White）;
EPD_2in7b_test(): Example for 2.7inch e-paper B（Black/White/Red）;
EPD_2in7b_V2_test(): Example for 2.7inch e-paper B V2（Black/White/Red）;

2.9inch (296 × 128)

EPD_2in9_test(): Example for 2.9inch e-paper (Black/White), this version is stopped production.
EPD_2in9_V2_test(): Example for 2.9inch e-paper V2（Black/White）; The purchase date is later than December 2020 is the V2 version, the current shipping version has the V2 logo on the back;
EPD_2in9bc_test(): Example for 2.9inch e-paper B（Balck/White/Red） and 2.9inch e-paper C（Black/White/Yellow）;
EPD_2in9b_V3_test(): Example for 2.9inch e-paper B V3 （Balck/White/Red）; Purchase date later than July 2020 is the V3 version, the current shipping version has the V3 logo on the back;
EPD_2in9d_test(): Example for 2.9inch e-paper D（Black/White）;

2.13inch（2.13inch e-Paper：250 × 122，others：212 × 104）：

EPD_2in13_test(): Example for 2.13inch e-paper V1（Black/White）, this version is stopped production and it can be bought before 019-05-15;
EPD_2in13_V2_test(): Example for 2.13inch e-paper V2（Black/White） This is the current version with sticker V2 on the backside (2020-07-29)；
EPD_2in13_V3_test(): Example for 2.13inch e-paper V3（Black/White） This is the current version with sticker V3 on the backside (2020-07-29)；
EPD_2in13bc_test()：Example for 2.13inch e-paper B（Black/White/Red）and 2.13inch e-paper C（Blackj/White/Yellow）;
EPD_2in13b_V3_test()：Example for 2.13inch e-paper B V3（Black/White/Red）Purchase date later than April 2020 is the V3 version, the current shipping version has the V3 logo on the back;
EPD_2in13d_test()： Example for 2.13inch e-paper D（Black/White）;

2.66inch (152 × 296)

EPD_2in66_test(): Example for 2.66inch e-Paper (Black/White);
EPD_2in66b_test(): Example for 2.66inch e-Paper B (Black/White/Red);

3inch (400 × 168)

EPD_3in0g_test(): Example for 3inch e-Paper G(Black/White/Red/Yellow);

3.52inch (360 × 240)

EPD_3in52_test(): Example for 3.52inch e-Paper (Black/White);

3.7inch (280 × 480)

EPD_3in7_test(): Example for 3.7inch e-Paper(Black/White);

4.01inch (640 × 400)

EPD_4in01_test(): Example for the 4.01inch e-Paper HAT (F) (Black/White/Green/Blue/Red/Yellow/Orange);

4.2inch（400 × 300）

EPD_4in2_test()： Example for 4.2inch e-paper（Black/White）；
EPD_4in2bc_test()： Example for 4.2inch e-paper B（Black/White/Red）；
EPD_4in2b_V2_test()： Example for 4.2inch e-paper B V2（Black/White/Red）. The purchase date is later than November 2020, it is the V2 version, and the current shipping version has the V2 logo on the back;

5.65inch (600 × 448)

EPD_5in65f_test(): Example for for 5.65inch e-Paper F (Black/White/Green/Blue/Red/Yellow/Orange);

5.83inch（600 × 448）：

EPD_5in83_test()： Example for 5.83inch e-paper（Black/White）, It is currently out of production.
EPD_5in83_V2_test()： Example for 5.83inch e-paper V2（Black/White）, The purchase date is later than December 2020 is the V2 version, the current shipping version, with the V2 logo on the back.
EPD_5in83bc_test()： Example for 5.83inch e-paper B（Black/White/Red）and 5.83inch e-paper C（Black/White/Yellow）;
EPD_5in83b_V2_test()： Example for 5.83inch e-paper B V2（Black/White/Red). The purchase date is later than August 2020 for the V2 version, the current shipping version, with the V2 logo on the back

7.5inch（V1：640 × 384， V2：800 × 480）：

EPD_7in5_test()： Example for 7.5inch e-paper（Black/White）. The purchase date is earlier than 2019-12-07 as the V1 version, which is currently discontinued.
EPD_7in5bc_test()： For example for 7.5inch e-paper B（Black/White/Red）and 7.5inch e-paper C（Black/White/Yellow）, The purchase date later than 2019-12-07 is the V2 version, and the current shipping version has the V2 logo on the back;
EPD_7in5_V2_test()： Example for 7.5inch e-paper V2（Black/White）. The purchase date of 7.5inch e-paper B is earlier than 2019-12-07, which is the V1 version, which is currently discontinued, and 7.5inch e-paper C is normally available.
EPD_7in5bc_V2_test()： Example for 7.5inch e-paper B V2（Black/White/Red）; The purchase date is later than 2019-12-07 is the V2 version, with the V2 logo on the back; the purchase date is later than March 2021 is the V3 version, the current 7.5inch e-paper B shipping version, with the V3 logo on the back, the same use this program;

7.3inch (400 × 168)

epd_7in3g_test.py: Example for 7inch3 e-paper G (Black/White/Red/Yellow).

7.5inch (880 × 528)

EPD_7in5_HD_test(): Example for 7.5inch e-Paper HD (Black/White);
EPD_7in5b_HD_test(): Example for 7.5inch e-Paper B HD (Black/White/Red);
Note: The above time is for reference only, please refer to the screen logo for the specific version
For example, 1.54inch e-Paper Module. Open the epd1in54 folder and run the epd1in54.ino file.
Open the program, select the development board model Arduino UNO

Codes description

Bottom hardware interface

We package the bottom for different hardware platforms.
You can check the DEV_Config.c(.h) file which is located in \STM32\STM32-F103ZET6\User\Config

Data type:

#define UBYTE   uint8_t
#define UWORD   uint16_t
#define UDOUBLE uint32_t

Module initialized and exit:

void DEV_Module_Init(void);
void DEV_Module_Exit(void);

Note: 1.The functions are used to set GPIP before and after driving e-Paper.
2..If the board you have is printed with Rev2.1, the module enters low-ultra mode after DEV_Module_Exit(). (as we test, the current is about 0 in this mode);

GPIO Read/Write：

void DEV_Digital_Write(UWORD Pin, UBYTE Value);
UBYTE DEV_Digital_Read(UWORD Pin);

SPI Write data

void DEV_SPI_WriteByte(UBYTE Value);

Middle EPD driver

The epd driver are saved in: STM32\STM32-F103ZET6\User\e-Paper

Open .h file, functions are declared here

Initialization: It should be used to initialize e-Paper or wakeup e-Paper from sleep mode.

//1.54inch e-Paper、1.54inch e-Paper V2、2.13inch e-Paper、2.13inch e-Paper  V2、2.13inch e-Paper (D)、2.9inch e-Paper、2.9inch e-Paper (D)
void EPD_xxx_Init(UBYTE Mode); //ode = 0 Initialize full refresh; Mode = 1 Initialize partial refresh 
//Other type
void EPD_xxx_Init(void);

xxx is the type of e-paper

Clear display: This function is used to clear the e-paper to white

void EPD_xxx_Clear(void);

xxx is the type of e-Paper.

Transmit a frame of image and display

//Black/White e-Paper
void EPD_xxx_Display(UBYTE *Image);

Because controllers of 1.54inch e-paper V2 and 2.13inch e-paper V2 were updated, you need to use EPD_xxx_DisplayPartBaseImage to display static image and ten use EPD_xxx_displayPart() to dymatic display when partial refreshing.
void EPD_2IN13_V2_DisplayPart(UBYTE *Image);
void EPD_2IN13_V2_DisplayPartBaseImage(UBYTE *Image);

Enter sleep mode

void EPD_xxx_Sleep(void);

Note, You should hardware reset or use initialize function to wake up e-Paper from sleep mode.
xxx is the type of e-Paper

Application function

Basic drawing functions are provided here. You can find they in:\STM32\STM32-F103ZET6\User\GUI\GUI_Paint.c(.h)

The fonts are saved in the directory:\STM32\STM32-F103ZET6\User\Fonts

Create a new image buffer: This function is used to create a new image with width, height, Rotate degree and its color.

void Paint_NewImage(UBYTE *image, UWORD Width, UWORD Height, UWORD Rotate, UWORD Color)
Parameter:
 	image: The buffer of the image, this is a pointer of buffer address;
 	Width: width of the image;
 	Height: Height of the image;
 	Rotate: Rotate degree;
 	Color: Initial color of the image;

Select image buffer: this function is used to select the image buffer. You can create multiple image buffers with the last function, then select the buffer for every image.

void Paint_SelectImage(UBYTE *image)
Parameter:
 	image: The name of image buffer, it is a pointer of buffer address;

Set display orientation: This function is used to set the rotate degree, it is generally be used after Paint_SelectImage(). You can set the rotate degree to 0、90、180、270 degree.

void Paint_SetRotate(UWORD Rotate)
Parameter:
 	Rotate: Rotate degree, you can choose ROTATE_0、ROTATE_90、ROTATE_180、ROTATE_270 which stands for 0、90、180、270 degree repetitively.

Image mirroring: This function is used to mirror image.

void Paint_SetMirroring(UBYTE mirror)
Parameter:
 	mirror: You can set it to MIRROR_NONE、MIRROR_HORIZONTAL、MIRROR_VERTICAL、MIRROR_ORIGIN

Set pixel: this function is used to set the position and color of pixels in the buffer. This is the basic function of GUI.

void Paint_SetPixel(UWORD Xpoint, UWORD Ypoint, UWORD Color)
Parameter:
 	Xpoint: X-axes in the buffer;
 	Ypoint: Y-axes in buffer;
 	Color: color

Clear: This function is used to clear the screen to certain color.

void Paint_Clear(UWORD Color)
Parameter:
 	Color:

Clear windows: this function is used to clear a window. It is generally used for time display.

void Paint_ClearWindows(UWORD Xstart, UWORD Ystart, UWORD Xend, UWORD Yend, UWORD Color)
Parameter:
 	Xstart: Start coordinate of X-axes of the window;
 	Ystart: Start coordinate of Y-axes of the window;
 	Xend: End coordinate of X-axes of the window;
 	Yend: End coordinate of Y-axes of the window;
 	Color:

Draw point: Draw a point on the position （Xpoint, Ypoint）in buffer

void Paint_DrawPoint(UWORD Xpoint, UWORD Ypoint, UWORD Color, DOT_PIXEL Dot_Pixel, DOT_STYLE Dot_Style)
Parameter:
 	Xpoint: X coordinate of point;
 	Ypoint: Y coordinate of point;
 	Color: color of point;
 	Dot_Pixel: the size of point, there are 8 sizes available;
 	 	 typedef enum {
 	 	 	 DOT_PIXEL_1X1  = 1,	// 1 x 1
 	 	 	 DOT_PIXEL_2X2  , 		// 2 X 2
 	 	 	 DOT_PIXEL_3X3  , 	 	// 3 X 3
 	 	 	 DOT_PIXEL_4X4  , 	 	// 4 X 4
 	 	 	 DOT_PIXEL_5X5  , 		// 5 X 5
 	 	 	 DOT_PIXEL_6X6  , 		// 6 X 6
 	 	 	 DOT_PIXEL_7X7  , 		// 7 X 7
 	 	 	 DOT_PIXEL_8X8  , 		// 8 X 8
 	 	} DOT_PIXEL;
 	Dot_Style: style of point. 
 	 	typedef enum {
 	 	   DOT_FILL_AROUND  = 1,		
 	 	   DOT_FILL_RIGHTUP,
 	 	} DOT_STYLE;

Draw line: draw a line for (Xstart, Ystart) to (Xend, Yend)

void Paint_DrawLine(UWORD Xstart, UWORD Ystart, UWORD Xend, UWORD Yend, UWORD Color, LINE_STYLE Line_Style , LINE_STYLE Line_Style)
Parameter:
 	Xstart: Start coordinate of X-axes of line;
 	Ystart: Start coordinate of Y-axes of line;
 	Xend: End coordinate of X-axes of line;
 	Yend: End coordinate of Y-axes of line
 	Color:
 	Line_width: the width of line, 8 sizes are avalilable;
 	 	typedef enum {
 	 	 	 DOT_PIXEL_1X1  = 1,	// 1 x 1
 	 	 	 DOT_PIXEL_2X2  , 		// 2 X 2
 	 	 	 DOT_PIXEL_3X3  ,		// 3 X 3
 	 	 	 DOT_PIXEL_4X4  ,		// 4 X 4
 	 	 	 DOT_PIXEL_5X5  , 		// 5 X 5
 	 	 	 DOT_PIXEL_6X6  , 		// 6 X 6
 	 	 	 DOT_PIXEL_7X7  , 		// 7 X 7
 	 	 	 DOT_PIXEL_8X8  , 		// 8 X 8
 	 	} DOT_PIXEL;
 	 Line_Style: Style of the line;
 	 	typedef enum {
 	 	 	 LINE_STYLE_SOLID = 0,
 	 	 	 LINE_STYLE_DOTTED,
 	 	} LINE_STYLE;

Draw rectangle: Draw a rectangle from (Xstart, Ystart) to (Xend, Yend).

void Paint_DrawRectangle(UWORD Xstart, UWORD Ystart, UWORD Xend, UWORD Yend, UWORD Color, DOT_PIXEL Line_width, DRAW_FILL Draw_Fill)
Parameter:
 	Xstart: Start coordinate of X-axes of rectangle
 	Ystart: Start coordinate of Y-axes of rectangle
 	Xend: End coordinate of X-end of rectangle
 	Yend: End coordinate of Y-end of rectangle
 	Color: color of rectangle
 	Line_width: The width of edges, 8 sides are available;
 	 	typedef enum {
 	 	 	 DOT_PIXEL_1X1  = 1,	// 1 x 1
 	 	 	 DOT_PIXEL_2X2  , 		// 2 X 2
 	 	 	 DOT_PIXEL_3X3  ,		// 3 X 3
 	 	 	 DOT_PIXEL_4X4  ,		// 4 X 4
 	 	 	 DOT_PIXEL_5X5  , 		// 5 X 5
 	 	 	 DOT_PIXEL_6X6  , 		// 6 X 6
 	 	 	 DOT_PIXEL_7X7  , 		// 7 X 7
 	 	 	 DOT_PIXEL_8X8  , 		// 8 X 8
 	 	} DOT_PIXEL;
 	Draw_Fill: set the rectangle full or empty.
 	 	typedef enum {
 	 	 	 DRAW_FILL_EMPTY = 0,
 	 	 	 DRAW_FILL_FULL,
 	 	} DRAW_FILL;

Draw circle:Draw a circle, use (X_Center Y_Center) as center;

void Paint_DrawCircle(UWORD X_Center, UWORD Y_Center, UWORD Radius, UWORD Color, DOT_PIXEL Line_width, DRAW_FILL Draw_Fill)
Parameter:
 	X_Center: X coordinate of center
 	Y_Center: Y coordinate of center
 	Radius：Radius of circle
 	Color: color of circle
 	Line_width: width of circle, 8 sizes are avalilable
 	 	typedef enum {
 	 	 	 DOT_PIXEL_1X1  = 1,	// 1 x 1
 	 	 	 DOT_PIXEL_2X2  , 		// 2 X 2
 	 	 	 DOT_PIXEL_3X3  ,		// 3 X 3
 	 	 	 DOT_PIXEL_4X4  ,		// 4 X 4
 	 	 	 DOT_PIXEL_5X5  , 		// 5 X 5
 	 	 	 DOT_PIXEL_6X6  , 		// 6 X 6
 	 	 	 DOT_PIXEL_7X7  , 		// 7 X 7
 	 	 	 DOT_PIXEL_8X8  , 		// 8 X 8
 	 	} DOT_PIXEL;
 	Draw_Fill: style of circle
 	 	typedef enum {
 	 	 	 DRAW_FILL_EMPTY = 0,
 	 	 	 DRAW_FILL_FULL,
 	 	} DRAW_FILL;

Draw character (ASCII): Set(Xstart Ystart) as letf-top point, draw a ASCII character.

void Paint_DrawChar(UWORD Xstart, UWORD Ystart, const char Ascii_Char, sFONT* Font, UWORD Color_Foreground, UWORD Color_Background)
Parameter:
 	Xstart: X coordinate of left-top pixel of character;
 	Ystart: Y coordinate of left-top pixel of character;
 	Ascii_Char：Ascii character;
 	Font: 5 fonts are available;
 	 	font8：5*8
 	 	font12：7*12
 	 	font16：11*16
 	 	font20：14*20
 	 	font24：17*24
 	Color_Foreground: color of character;
 	Color_Background: color of background;

Draw String: Set point (Xstart Ystart) as the left-top pixel, draw a string.

void Paint_DrawString_EN(UWORD Xstart, UWORD Ystart, const char * pString, sFONT* Font, UWORD Color_Foreground, UWORD Color_Background)
Parameter:
 	Xstart: X coordinate of left-top pixel of characters;
 	Ystart: Y coordinate of left-top pixel of characters;
 	pString：Pointer of string
 	Font: 5 fonts are available:
 	 	font8：5*8
 	 	font12：7*12
 	 	font16：11*16
 	 	font20：14*20
 	 	font24：17*24
 	Color_Foreground: color of string
 	Color_Background: color of background

Draw Chinese characters: this function is used to draw Chinese fonts based ON GB2312 fonts.

void Paint_DrawString_CN(UWORD Xstart, UWORD Ystart, const char * pString, cFONT* font, UWORD Color_Foreground, UWORD Color_Background)
Parameter:
 	Xstart: Coordinate of left-top pixel of characters;
 	Ystart: Coordinate of left-top pixel of characters;
 	pString：Pointer of string
 	Font: GB2312 fonts
 	 	font12CN：11*21(ascii)，16*21 (Chinese)
 	 	font24CN：24*41(ascii)，32*41 (Chinese)
 	Color_Foreground: color of string
 	Color_Background: color of background

Draw number: Draw a string of numbers, (Xstart, Ystart) is the left-top pixel.

void Paint_DrawNum(UWORD Xpoint, UWORD Ypoint, int32_t Nummber, sFONT* Font, UWORD Color_Foreground, UWORD Color_Background)
Parameter:
 	Xstart: X coordinate of left-top pixel;
 	Ystart: Y coordicate of left-to pixel;
 	Nummber：the numbers displayed. the numbers are saved in int format, the maximum is 2147483647;
 	Font: 5 fonts are available：
 	 	font8：5*8
 	 	font12：7*12
 	 	font16：11*16
 	 	font20：14*20
 	 	font24：17*24
 	Color_Foreground: color of font;
 	Color_Background: color of background;

Display time:Display time, (Xstart, Ystart) is the left-top pixel. This function is used for e-Paper which supports partial refresh

void Paint_DrawTime(UWORD Xstart, UWORD Ystart, PAINT_TIME *pTime, sFONT* Font, UWORD Color_Background, UWORD Color_Foreground)
Parameter:
 	Xstart: X coordinate of left-top pixel of character;
 	Ystart: Y coordinate of left-top pixel of character;
 	pTime：Pointer of time displayed;
 	Font: 5 fonts are available;
 	 	font8：5*8
 	 	font12：7*12
 	 	font16：11*16
 	 	font20：14*20
 	 	font24：17*24
 	Color_Foreground: color of fonts
 	Color_Background: color of background

Draw image:send image data of bmp file to buffer

void Paint_DrawBitMap(const unsigned char* image_buffer)
Parameter:
 	image_buffer: adrress of image data in buffer

Documentation

Demo code

Github

Datasheets

Datasheets

Related Resources

This is a post in Arduino Form about our SPI e-Paper thanks to ZinggJM, maybe you want to refer to.

Waveshare e-Paper display with SPI

FAQ

Question:Working requirements of e-Paper?

Answer:

Two-color B/W e-paper
- 【Working】Temperature: 0~50°C; Humidity: 35%~65%RH
- 【Storage】Temperature: ≤30°C; Humidity: ≤55%RH; Max storage time: 6 months
- 【Transport】Temperature: -25~70°C; Max transport time: 10 days
- 【Unpack】Temperature: 20°C±5°C; Humidity: 50%RH±5%RH; Max storage time: Should be assembled in 72h
Three-Color e-Paper
- 【Working】Temperature: 0~40°C; Humidity: 35%~65%RH
- 【Storage】Temperature: ≤30°C; Humidity: ≤55%RH; Max storage time: 3 months
- 【Transport】Temperature: -25~60°C; Max transport time: 10 days
- 【Unpack】Temperature: 20°C±5°C; Humidity: 50%RH±5%RH; Max storage time: Should be assembled in 72h

When store three-color e-Paper, please refresh it to white, and keep the screen upward. Note that you need to update it at least every three months.

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