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User Manual for WAVESHARE models including: e-Paper Driver HAT E-Ink Display, Driver HAT E-Ink Display, HAT E-Ink Display, E-Ink Display, Display
Jun 6, 2024 · The switch has two ends: A/B. When connecting different models of e-Paper HATs, the Display Config switch must be set in the following table ...
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DocumentDocumente-Pap er Driver HAT User Manual e-Paper Driver HAT User Manual www.waveshare.com/wiki Version V1.0.0 e-Paper Driver HAT User Manual Revision History Content New creation Date 2024/6/6 Page All e-Paper Driver HAT User Manual Contents 1. OVERVIEW ............................................................................................................................................................... 1 1.1 Features .........................................................................................................................................................1 1.2 Product Parameters ................................................................................................................................... 2 1.3 Interface Specification ..............................................................................................................................2 1.4 Supported E-Paper Models ...................................................................................................................... 3 2. USAGE .......................................................................................................................................................................5 2.1 Switch Setting Introduction .....................................................................................................................5 2.1.1 Display Config Settings ..................................................................................................................5 2.1.2 Interface Config Settings ................................................................................................................ 6 2.1.3 Setting Example ...............................................................................................................................6 2.2 Work With Raspberry Pi ........................................................................................................................... 7 2.2.1 Install Necessary Libraries ........................................................................................................... 7 2.2.2 Hardware Connection .................................................................................................................... 8 2.2.3 Expected Result ..................................................................................................................................8 2.3 Work With Arduino .................................................................................................................................... 9 2.3.1 Hardware Connection .......................................................................................................................9 2.3.2 Expected Result ..................................................................................................................................9 2.4 Work With STM32 .....................................................................................................................................10 2.4.1 Hardware Connection .....................................................................................................................10 2.4.2 Expected Result ................................................................................................................................11 1. OVERVIEW e-Paper Driver HAT User Manual This product is an e-Paper driver HAT, which can drive multiple e-Paper HATs with SPI interfaces designed by Waveshare. 1.1 FEATURES Standard Raspberry Pi 40PIN GPIO extension header, supports Raspberry Pi series boards, Jetson Nano. SPI interface, for connecting with other controller boards like Raspberry/Arduino/Nucleo, etc. Comes with online development resources and manual (examples for Raspberry Pi/Jetson Nano/Arduino/STM32). 1 1.2 PRODUCT PARAMETERS Parameter Operating Voltage Communication Interface Outline Dimension Mounting Hole Size e-Paper Driver HAT User Manual Specification Unit 3.3 V 3-wire SPI, 4-wire SPI 65 × 30.2 mm 3.0 mm 1.3 INTERFACE SPECIFICATION NO. Name Description 1 VCC 3.3V 2 GND Ground 3 DIN SPI MOSI pin 4 CLK SPI SCK pin 5 CS SPI chip selection pin, low active 6 DC Data/Command control pin (high for data, low for command) 7 RST External reset pin, low active 8 BUSY Busy status output pin, low active 2 1.4 SUPPORTED E-PAPER MODELS e-Paper Driver HAT User Manual Model 1.54inch e-Paper 1.54inch e-Paper (B) 2.13inch e-Paper 2.13inch e-Paper (B) 2.7inch e-Paper 2.7inch e-Paper (B) 2.9inch e-Paper 2.9inch e-Paper (B) 4.2inch e-Paper 4.2inch e-Paper (B) 7.5inch e-Paper 7.5inch e-Paper (B) Colors black, white red, black, white black, white red, black, white black, white red, black, white black, white red, black, white black, white red, black, white black, white red, black, white Grey Scale Resolution 2 200x200 2 200x200 2 250x122 2 212x104 2 264x176 2 264x176 2 296x128 2 296x128 2 400x300 2 400x300 2 640×384 2 640×384 Display Size (mm) Outline Dimension (mm) Refresh Time (s) Partial Refresh Control Interface 27.60×27.60 37.3 ×31.8 2 SPI 27.60×27.60 37.3 ×31.8 8 × SPI 48.55×23.71 59.2 ×29.2 2 SPI 48.55×23.71 59.2 ×29.2 15 × SPI 57.29×38.19 70.4 ×45.8 6 × SPI 57.29×38.19 70.4 ×45.8 15 × SPI 66.89×29.05 79.0 ×36.7 2 SPI 66.89×29.05 79.0 ×36.7 15 × SPI 84.80×63.60 90.1 ×77.0 4 × SPI 84.80×63.60 90.1 ×77.0 15 163.20×97.92 170.2 ×111.2 6 163.20×97.92 170.2 ×111.2 31 × SPI × SPI × SPI Note: Refresh Time refers to the global refresh time, that is, the time used to refresh each frame of the image; If the e-paper HAT supports partial refresh, it takes about 0.3 seconds. 3 Please refer to the figure below for different models: e-Paper Driver HAT User Manual 4 2. USAGE e-Paper Driver HAT User Manual 2.1 SWITCH SETTING INTRODUCTION As shown in the following figure, there are two toggle switches on the front of the e-Paper Driver HAT: Display Config and Interface Config. The following describes how to set the two switches. 2.1.1 DISPLAY CONFIG SETTINGS The Display Config switch on the e-Paper Driver HAT is set to support driving multiple e-Paper HATs of Waveshare. The switch has two ends: A/B. When connecting different models of e-Paper HATs, the Display Config switch must be set in the following table: 5 e-Paper Driver HAT User Manual B (If connected to the following models, the switch must be flipped to the B end) 1.54inch e-Paper (B) 2.13inch e-Paper (B) 2.7inch e-Paper 2.7inch e-Paper (B) 2.9inch e-Paper (B) 4.2inch e-Paper 4.2inch e-Paper (B) 7.5inch e-Paper 7.5inch e-Paper (B) A (If connected to the following models, the switch must be flipped to the A end) 1.54inch e-Paper 2.13inch e-Paper 2.9inch e-Paper 2.1.2 INTERFACE CONFIG SETTINGS The Interface Config switch can switch the e-Paper HAT to use 3-line SPI or 4-line SPI. When the switch is flipped to 1, the module works in 3-line SPI; When the switch is flipped to 0, the module works in 4-line SPI; The example program uses 4-line SPI by default. 2.1.3 SETTING EXAMPLE As shown in the following figure, when the driver board is used for "7.5inch e-Paper", the Display Config must be set to B; the Interface Config is set to 0, and the module works in 4-line SPI mode. 6 e-Paper Driver HAT User Manual 2.2 WORK WITH RASPBERRY PI 2.2.1 INSTALL NECESSARY LIBRARIES When the e-Paper HAT works with the Raspberry Pi, you need to install the necessary libraries (WiringPi, bcm2835, python libraries), otherwise the following demo may not work properly. 7 e-Paper Driver HAT User Manual 2.2.2 HARDWARE CONNECTION Hardware connection to development board Raspberry Pi (Raspberry Pi 3B): e-Paper 3.3V GND DIN CLK CS DC RST BUSY Raspberry Pi 3B 3.3V GND MOSI SCLK CE0 25 (BCM) 17 (BCM) 24 (BCM) 2.2.3 EXPECTED RESULT 1) After installing the corresponding library, copy it to the Raspberry Pi and go to the corresponding directory: bcm2835: Execute the command: make, which will compile the code and generate an execution file named epd. Execute the command: sudo./epd, and the demo will run. Wiringpi: Execute the command: make, which will compile the code and generate an execution file named epd. Execute the command: sudo./epd, and the demo will run. Python: Execute the command: sudo python main.py. 2) The screen will display the image. Note: The module refreshes slowly and blinks several times during the refreshing process. Please wait patiently. 8 2.3 WORK WITH ARDUINO 2.3.1 HARDWARE CONNECTION Hardware connection to development board UNO PLUS: e-Paper Driver HAT User Manual e-Paper 3.3V GND DIN CLK CS DC RST BUSY Arduino 3.3V GND D11 D13 D10 D9 D8 D7 2.3.2 EXPECTED RESULT 1) Copy the files from the arduino/libraries directory in the sample package to documents/arduino/libraries, this location can be specified by clicking "ArduinoIDE" "File" "Preferences" "Sketchbook location". 2) Click "Upload" to upload the project. 3) The screen will display the image. Note: The module refreshes slowly and blinks several times during the refreshing process. Please wait patiently. The RAM of the Arduino UNO is only 2K, and the module requires at least 30720 bytes of memory to fully update 1 frame of an image, and it cannot be partially refreshed (that is, it cannot refresh a partial image multiple times to fully update a frame of an image). Therefore, only the still image display program for Arduino is provided. 9 2.4 WORK WITH STM32 e-Paper Driver HAT User Manual The NUCLEO-F103RB is used as the demo development board for three e-Paper HATs, 1.54 inch/2.13 inch/2.9 inch e-Paper HATs, other types of e-Paper HAT with STM32F103ZE. The demo is based on the HAL library, so the sample program can be ported to other STM chips using the STM32CubeMX. The demo is compiled in the Keilv5 environment. 2.4.1 HARDWARE CONNECTION If the development board used in the demo is STM32F103ZE, the hardware connection is as follows: e-Paper 3.3V GND DIN CLK CS BUSY DC RST STM32F103ZE 3.3V GND PA7 (MOSI) PA5 (SCK) PA4 PA3 PA2 PA1 10 e-Paper Driver HAT User Manual If the development board used in the demo is NUCLEO-F103RB, the hardware connection is as follows: e-Paper 3.3V GND DIN CLK CS BUSY DC RST NUCLEO-F103RB 3.3V GND PA7 PA5 PB6 PA8 PC7 PA9 2.4.2 EXPECTED RESULT 1) Open the Keil project (epd-demo.uvprojx) in the MDK-ARM directory. 2) Click "Build" to compile the project. 3) Click "Download" to write the project to the chip. 4) After the development board is reset, the screen displays the image. Note: The module refreshes slowly and blinks several times during the refreshing process. Please wait patiently. 11