rpi-gpio-epaper
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dbushell
Control e-paper modules on the Raspberry Pi GPIO with Node.js
rpi-gpio-epaper
Control e-paper modules on the Raspberry Pi GPIO with Node.js
This code has been tested with the Waveshare 1.54inch but should be adaptable for other sizes.
Coming soon...
Usage
Coming soon...
Dependencies
This library uses rpi-gpio.js and node-spi. The former depends on epoll which currently only builds on Linux systems. I develop with Node and Vim on the Raspberry Pi itself.
Sources
This code is based on the Waveshare python demo which provides a handy installation guide:
Raspberry Pi GPIO Pin map
| BCM | wPi | Name | Mode | V | Physical | V | Mode | Name | wPi | BCM |
|---|---|---|---|---|---|---|---|---|---|---|
| 3.3v | 01 -- 02 |
5v | ||||||||
| 2 | 8 | SDA.1 | IN | 1 | 03 -- 04 |
5v | ||||
| 3 | 9 | SCL.1 | IN | 1 | 05 -- 06 |
0v | ||||
| 4 | 7 | GPIO. 7 | IN | 1 | 07 -- 08 |
1 | ALT5 | TxD | 15 | 14 |
| 0v | 09 -- 10 |
1 | ALT5 | RxD | 16 | 15 | ||||
| 17 | 0 | GPIO. 0 | IN | 0 | 11 -- 12 |
0 | IN | GPIO. 1 | 1 | 18 |
| 27 | 2 | GPIO. 2 | IN | 0 | 13 -- 14 |
0v | ||||
| 22 | 3 | GPIO. 3 | IN | 0 | 15 -- 16 |
0 | IN | GPIO. 4 | 4 | 23 |
| 3.3v | 17 -- 18 |
0 | IN | GPIO. 5 | 5 | 24 | ||||
| 10 | 12 | MOSI | ALT0 | 0 | 19 -- 20 |
0v | ||||
| 9 | 13 | MISO | ALT0 | 0 | 21 -- 22 |
0 | IN | GPIO. 6 | 6 | 25 |
| 11 | 14 | SCLK | ALT0 | 0 | 23 -- 24 |
1 | OUT | CE0 | 10 | 8 |
| 0v | 25 -- 26 |
1 | OUT | CE1 | 11 | 7 | ||||
| 0 | 30 | SDA.0 | IN | 1 | 27 -- 28 |
1 | IN | SCL.0 | 31 | 1 |
| 5 | 21 | GPIO.21 | IN | 1 | 29 -- 30 |
0v | ||||
| 6 | 22 | GPIO.22 | IN | 1 | 31 -- 32 |
0 | IN | GPIO.26 | 26 | 12 |
| 13 | 23 | GPIO.23 | IN | 0 | 33 -- 34 |
0v | ||||
| 19 | 24 | GPIO.24 | OUT | 1 | 35 -- 36 |
1 | OUT | GPIO.27 | 27 | 16 |
| 26 | 25 | GPIO.25 | IN | 0 | 37 -- 38 |
0 | IN | GPIO.28 | 28 | 20 |
| 0v | 39 -- 40 |
0 | IN | GPIO.29 | 29 | 21 |
Copyright (c) 2017 Waveshare
Hardware connection
| EPD | Raspberry Pi |
|---|---|
| VCC | 3.3 |
| GND | GND |
| DIN | MOSI |
| CLK | SCLK |
| CS | 24 (Physical, BCM: CE0, 8) |
| D/C | 22 (Physical, BCM: 25) |
| RES | 11 (Physical, BCM: 17) |
| BUSY | 18 (Physical, BCM: 24) |
Copyright (c) 2017 David Bushell | MIT License
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