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 #include "epd1in54.h"
00030 
00031 extern DigitalOut reset_pin;
00032 extern DigitalOut dc_pin;
00033 extern DigitalOut cs_pin;
00034 extern DigitalIn busy_pin;
00035 extern SPI epaper;
00036 extern DigitalOut myled;
00037 
00038 EpdIf::EpdIf()
00039 {
00040 };
00041 
00042 EpdIf::~EpdIf()
00043 {
00044 };
00045 
00046 
00047 void EpdIf::DigitalWrite(int pin, int value)
00048 {
00049     using namespace std;
00050     switch(pin) {
00051         case 0:
00052             reset_pin.write(value);
00053             break;
00054         case 1:
00055             dc_pin.write(value);
00056             break;
00057         case 2:
00058             cs_pin.write(value);
00059             break;
00060     }
00061 }
00062 
00063 int EpdIf::DigitalRead(int pin)
00064 {
00065     return busy_pin.read();
00066 }
00067 
00068 void EpdIf::DelayMs(unsigned int delaytime)
00069 {
00070     wait_ms(delaytime);
00071 }
00072 
00073 void EpdIf::SpiTransfer(unsigned char data)
00074 {
00075     cs_pin.write(LOW);
00076     epaper.write(data);
00077     cs_pin.write(HIGH);
00078 }
00079 
00080 int EpdIf::IfInit(void)
00081 {
00082     epaper.frequency(2000000);
00083     //epaper.format(8,0);
00084     //SPI.beginTransaction(SPISettings(2000000, MSBFIRST, SPI_MODE0));
00085     return 0;
00086 }
00087 
00088