epdif.cpp

00001 /**
00002  *  @filename   :   epdif.cpp
00003  *  @brief      :   Implements EPD interface functions
00004  *                  Users have to implement all the functions in epdif.cpp
00005  *  @author     :   Yehui from Waveshare
00006  *
00007  *  Copyright (C) Waveshare     August 10 2017
00008  *
00009  * Permission is hereby granted, free of charge, to any person obtaining a copy
00010  * of this software and associated documnetation files (the "Software"), to deal
00011  * in the Software without restriction, including without limitation the rights
00012  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
00013  * copies of the Software, and to permit persons to  whom the Software is
00014  * furished to do so, subject to the following conditions:
00015  *
00016  * The above copyright notice and this permission notice shall be included in
00017  * all copies or substantial portions of the Software.
00018  *
00019  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
00020  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
00021  * FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
00022  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
00023  * LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
00024  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
00025  * THE SOFTWARE.
00026  */
00027 
00028 #include "epdif.h"
00029 EpdIf::EpdIf(){
00030     }
00031 EpdIf::EpdIf(PinName mosi, 
00032              PinName miso, 
00033              PinName sclk, 
00034              PinName cs, 
00035              PinName dc, 
00036              PinName rst, 
00037              PinName busy) {
00038     m_spi = new SPI(mosi, miso, sclk);
00039     m_cs = new DigitalOut(cs);
00040     m_dc = new DigitalOut(dc);
00041     m_rst = new DigitalOut(rst);
00042     m_busy = new DigitalIn(busy);    
00043 }
00044 
00045 EpdIf::~EpdIf() {
00046 }
00047 
00048 void EpdIf::DigitalWrite(DigitalOut* pout, int value) {
00049     *pout = value;
00050 }
00051 
00052 int EpdIf::DigitalRead(DigitalIn* pin) {
00053     int ret = *pin;
00054     return ret;
00055 }
00056 
00057 void EpdIf::DelayMs(unsigned int delaytime) {
00058     wait_ms(delaytime);
00059 }
00060 
00061 void EpdIf::SpiTransfer(unsigned char data) {
00062     *m_cs = 0;
00063     m_spi->write(data);
00064     *m_cs = 1;
00065 }
00066 
00067 int EpdIf::IfInit(void){
00068     m_spi->format(8,0); 
00069     m_spi->frequency(2000000); 
00070     return 0;
00071 }
00072     
00073