Library for Waveshare epd1in54b (1.54 inch ePaper black/red)
e-Paper Module
Description
Waveshare 1.54 e-paper module imported from offiicial code https://www.waveshare.com/wiki/1.54inch_e-Paper_Module_(B) Codes are referenced from official Arduino code and Raspberry pi code.
SPI is used for communication between ePaper module and mbed.
Following shapes can be used:
- primitive shape (square, circle, line)
- font (variable sizes)
Pull request are appreciated (Note that the original code is copyrighted by (C) Waveshare )
Example Output
Display output with example code will be like following image:
Example Code
include the mbed library with this snippet
#include "mbed.h" #include "epd1in54b.h" // Control PinName rst; PinName dc; PinName busy; // SPI communication PinName mosi; PinName miso; PinName sclk; PinName cs; DigitalOut myled(LED1); unsigned char frame_black[EPD_HEIGHT*EPD_WIDTH/8]; unsigned char frame_red[EPD_HEIGHT*EPD_WIDTH/8]; int main() { mosi = p5; miso = p6; sclk = p7; cs = p8; rst = p9; dc = p10; busy = p11; memset(frame_black, 0xFF, sizeof(unsigned char)*EPD_HEIGHT*EPD_WIDTH/8); memset(frame_red, 0xFF, sizeof(unsigned char)*EPD_HEIGHT*EPD_WIDTH/8); Epd epd = Epd(mosi, miso, sclk, cs, dc, rst, busy); if (epd.Init() != 0){ return -1; } /* Draw something to the frame buffer */ // For simplicity, the arguments are explicit numerical coordinates epd.DrawRectangle(frame_black, 10, 60, 50, 110, COLORED); epd.DrawLine(frame_black, 10, 60, 50, 110, COLORED); epd.DrawLine(frame_black, 50, 60, 10, 110, COLORED); epd.DrawCircle(frame_black, 120, 80, 30, COLORED); epd.DrawFilledRectangle(frame_red, 10, 130, 50, 180, COLORED); epd.DrawFilledRectangle(frame_red, 0, 6, 200, 26, COLORED); epd.DrawFilledCircle(frame_red, 120, 150, 30, COLORED); /*Write strings to the buffer */ epd.DrawStringAt(frame_black, 30, 30, "e-Paper Demo", &Font16, COLORED); epd.DrawStringAt(frame_red, 28, 10, "Hello world!", &Font16, UNCOLORED); // display images epd.DisplayFrame(frame_black, frame_red); //epd.DisplayFrame(IMAGE_BLACK, IMAGE_RED); epd.Sleep(); while(1) { myled = 1; wait(0.5); myled = 0; wait(0.5); } }
epdif.cpp@0:cba3c1061231, 2018-02-11 (annotated)
- Committer:
- imachooon
- Date:
- Sun Feb 11 01:34:23 2018 +0000
- Revision:
- 0:cba3c1061231
commimt as library
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
imachooon | 0:cba3c1061231 | 1 | /** |
imachooon | 0:cba3c1061231 | 2 | * @filename : epdif.cpp |
imachooon | 0:cba3c1061231 | 3 | * @brief : Implements EPD interface functions |
imachooon | 0:cba3c1061231 | 4 | * Users have to implement all the functions in epdif.cpp |
imachooon | 0:cba3c1061231 | 5 | * @author : Yehui from Waveshare |
imachooon | 0:cba3c1061231 | 6 | * |
imachooon | 0:cba3c1061231 | 7 | * Copyright (C) Waveshare August 10 2017 |
imachooon | 0:cba3c1061231 | 8 | * |
imachooon | 0:cba3c1061231 | 9 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
imachooon | 0:cba3c1061231 | 10 | * of this software and associated documnetation files (the "Software"), to deal |
imachooon | 0:cba3c1061231 | 11 | * in the Software without restriction, including without limitation the rights |
imachooon | 0:cba3c1061231 | 12 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
imachooon | 0:cba3c1061231 | 13 | * copies of the Software, and to permit persons to whom the Software is |
imachooon | 0:cba3c1061231 | 14 | * furished to do so, subject to the following conditions: |
imachooon | 0:cba3c1061231 | 15 | * |
imachooon | 0:cba3c1061231 | 16 | * The above copyright notice and this permission notice shall be included in |
imachooon | 0:cba3c1061231 | 17 | * all copies or substantial portions of the Software. |
imachooon | 0:cba3c1061231 | 18 | * |
imachooon | 0:cba3c1061231 | 19 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
imachooon | 0:cba3c1061231 | 20 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
imachooon | 0:cba3c1061231 | 21 | * FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
imachooon | 0:cba3c1061231 | 22 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
imachooon | 0:cba3c1061231 | 23 | * LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
imachooon | 0:cba3c1061231 | 24 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
imachooon | 0:cba3c1061231 | 25 | * THE SOFTWARE. |
imachooon | 0:cba3c1061231 | 26 | */ |
imachooon | 0:cba3c1061231 | 27 | |
imachooon | 0:cba3c1061231 | 28 | #include "epdif.h" |
imachooon | 0:cba3c1061231 | 29 | EpdIf::EpdIf(){ |
imachooon | 0:cba3c1061231 | 30 | } |
imachooon | 0:cba3c1061231 | 31 | EpdIf::EpdIf(PinName mosi, |
imachooon | 0:cba3c1061231 | 32 | PinName miso, |
imachooon | 0:cba3c1061231 | 33 | PinName sclk, |
imachooon | 0:cba3c1061231 | 34 | PinName cs, |
imachooon | 0:cba3c1061231 | 35 | PinName dc, |
imachooon | 0:cba3c1061231 | 36 | PinName rst, |
imachooon | 0:cba3c1061231 | 37 | PinName busy) { |
imachooon | 0:cba3c1061231 | 38 | m_spi = new SPI(mosi, miso, sclk); |
imachooon | 0:cba3c1061231 | 39 | m_cs = new DigitalOut(cs); |
imachooon | 0:cba3c1061231 | 40 | m_dc = new DigitalOut(dc); |
imachooon | 0:cba3c1061231 | 41 | m_rst = new DigitalOut(rst); |
imachooon | 0:cba3c1061231 | 42 | m_busy = new DigitalIn(busy); |
imachooon | 0:cba3c1061231 | 43 | } |
imachooon | 0:cba3c1061231 | 44 | |
imachooon | 0:cba3c1061231 | 45 | EpdIf::~EpdIf() { |
imachooon | 0:cba3c1061231 | 46 | } |
imachooon | 0:cba3c1061231 | 47 | |
imachooon | 0:cba3c1061231 | 48 | void EpdIf::DigitalWrite(DigitalOut* pout, int value) { |
imachooon | 0:cba3c1061231 | 49 | *pout = value; |
imachooon | 0:cba3c1061231 | 50 | } |
imachooon | 0:cba3c1061231 | 51 | |
imachooon | 0:cba3c1061231 | 52 | int EpdIf::DigitalRead(DigitalIn* pin) { |
imachooon | 0:cba3c1061231 | 53 | int ret = *pin; |
imachooon | 0:cba3c1061231 | 54 | return ret; |
imachooon | 0:cba3c1061231 | 55 | } |
imachooon | 0:cba3c1061231 | 56 | |
imachooon | 0:cba3c1061231 | 57 | void EpdIf::DelayMs(unsigned int delaytime) { |
imachooon | 0:cba3c1061231 | 58 | wait_ms(delaytime); |
imachooon | 0:cba3c1061231 | 59 | } |
imachooon | 0:cba3c1061231 | 60 | |
imachooon | 0:cba3c1061231 | 61 | void EpdIf::SpiTransfer(unsigned char data) { |
imachooon | 0:cba3c1061231 | 62 | *m_cs = 0; |
imachooon | 0:cba3c1061231 | 63 | m_spi->write(data); |
imachooon | 0:cba3c1061231 | 64 | *m_cs = 1; |
imachooon | 0:cba3c1061231 | 65 | } |
imachooon | 0:cba3c1061231 | 66 | |
imachooon | 0:cba3c1061231 | 67 | int EpdIf::IfInit(void){ |
imachooon | 0:cba3c1061231 | 68 | m_spi->format(8,0); |
imachooon | 0:cba3c1061231 | 69 | m_spi->frequency(2000000); |
imachooon | 0:cba3c1061231 | 70 | return 0; |
imachooon | 0:cba3c1061231 | 71 | } |
imachooon | 0:cba3c1061231 | 72 | |
imachooon | 0:cba3c1061231 | 73 |