e-paper-display/bcm2835-1.71/e-Paper/Arduino/epd1in54b_V2/epd1in54b_V2.cpp

194 lines
5.1 KiB
C++

/**
* @filename : epd1in54b.cpp
* @brief : Implements for e-paper library
* @author : Yehui from Waveshare
*
* Copyright (C) Waveshare August 10 2017
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documnetation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include <stdlib.h>
#include "epd1in54b_V2.h"
Epd::~Epd() {
};
Epd::Epd() {
reset_pin = RST_PIN;
dc_pin = DC_PIN;
cs_pin = CS_PIN;
busy_pin = BUSY_PIN;
width = EPD_WIDTH;
height = EPD_HEIGHT;
};
int Epd::Init(void) {
/* this calls the peripheral hardware interface, see epdif */
if (IfInit() != 0) {
return -1;
}
/* EPD hardware init start */
Reset();
WaitUntilIdle();
SendCommand(0x12); //SWRESET
WaitUntilIdle();
SendCommand(0x01); //Driver output control
SendData(0xC7);
SendData(0x00);
SendData(0x01);
SendCommand(0x11); //data entry mode
SendData(0x01);
SendCommand(0x44); //set Ram-X address start/end position
SendData(0x00);
SendData(0x18); //0x18-->(24+1)*8=200
SendCommand(0x45); //set Ram-Y address start/end position
SendData(0xC7); //0xC7-->(199+1)=200
SendData(0x00);
SendData(0x00);
SendData(0x00);
SendCommand(0x3C); //BorderWavefrom
SendData(0x05);
SendCommand(0x18); //Read built-in temperature sensor
SendData(0x80);
SendCommand(0x4E); // set RAM x address count to 0;
SendData(0x00);
SendCommand(0x4F); // set RAM y address count to 0X199;
SendData(0xC7);
SendData(0x00);
WaitUntilIdle();
/* EPD hardware init end */
return 0;
}
/**
* @brief: basic function for sending commands
*/
void Epd::SendCommand(unsigned char command) {
DigitalWrite(dc_pin, LOW);
SpiTransfer(command);
}
/**
* @brief: basic function for sending data
*/
void Epd::SendData(unsigned char data) {
DigitalWrite(dc_pin, HIGH);
SpiTransfer(data);
}
/**
* @brief: Wait until the busy_pin goes HIGH
*/
void Epd::WaitUntilIdle(void) {
while(1) {
if(DigitalRead(busy_pin) == 0)
break;
DelayMs(100);
}
}
/**
* @brief: module reset.
* often used to awaken the module in deep sleep,
* see Epd::Sleep();
*/
void Epd::Reset(void) {
DigitalWrite(reset_pin, HIGH);
DelayMs(200);
DigitalWrite(reset_pin, LOW); //module reset
DelayMs(10);
DigitalWrite(reset_pin, HIGH);
DelayMs(200);
}
/**
* @brief: set the look-up tables
*/
void Epd::DisplayFrame(const unsigned char* frame_buffer_black, const unsigned char* frame_buffer_red) {
unsigned char temp;
unsigned int i;
SendCommand(0x24);
for(i=0;i<this->width * this->height / 8;i++)
{
SendData(pgm_read_byte(&frame_buffer_black[i]));
}
SendCommand(0x26);
for(i=0;i<this->width * this->height / 8;i++)
{
SendData(~pgm_read_byte(&frame_buffer_red[i]));
}
SendCommand(0x22);
SendData(0xF7);
SendCommand(0x20);
WaitUntilIdle();
}
void Epd::DisplayClear() {
unsigned char temp;
unsigned int i;
SendCommand(0x24);
for(i=0;i<this->width * this->height / 8;i++)
{
SendData(0xff);
}
SendCommand(0x26);
for(i=0;i<this->width * this->height / 8;i++)
{
SendData(0x00);
}
SendCommand(0x22);
SendData(0xF7);
SendCommand(0x20);
WaitUntilIdle();
}
/**
* @brief: After this command is transmitted, the chip would enter the
* deep-sleep mode to save power.
* The deep sleep mode would return to standby by hardware reset.
* The only one parameter is a check code, the command would be
* executed if check code = 0xA5.
* You can use Epd::Init() to awaken
*/
void Epd::Sleep() {
SendCommand(0x10); //power setting
SendData(0x01); //gate switch to external
DelayMs(100);
}
/* END OF FILE */