Python library for Waveshare 2.13" e-paper display for use on Raspberry Pi
See www.waveshare.com/wiki/2.13inch_e-Paper_HAT for details of the screen hardware
- SPI interface on R-Pi should be enabled
- Python libraries spidev and PIL (think both come with R-Pi now)
The following table shows the connections assumed by the code:
| Display PIN | R-Pi GPIO |
|---|---|
| 3.3V | 3.3V |
| GND | GND |
| DIN | MOSI (GPIO10) |
| CLK | SCLK (GPIO11) |
| CS | CE0 (GPIO8) or CE1 (GPIO7) |
| DC | GPIO19 |
| RST | GPIO13 |
| Busy | GPIO6 |
GPIO numbering is BCM, NOT the physical pin number/position on R-Pi. Note these pin numbers can be changed when initialising the EDP() class (see below).
Create the e-paper display object
from waveshare_epd_lib import EPD
epd = EPD()
Draw shapes on screen
epd.rect((10,10,40,40),fill=0)
epd.ellipse((10,10,40,40),fill=0)
epd.line((80,80,140,140),fill=0,width=5)
epd.text((50,130),'Hello')
epd.text((10,120),'Hello',fontsize=20)
Update screen with new shapes
epd.update()
Clear screen completely. Note the screen flashes during this.
epd.clear_screen()
The pins used to control the screen can be changed when creating the EPD() class:
epd=EPD(reset_pin=13,dc_pin=19,busy_pin=6,spi_dev=1)
The spi_dev parameter can be 0 or 1 corresponding to GPIO pins CE0 and CE1