e-paper-display/bcm2835-1.71/e-Paper/Arduino/epd4in01f/epd4in01f.cpp

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/*****************************************************************************
* | File : EPD_4in01f.c
* | Author : Waveshare team
* | Function : 4.01inch e-paper
* | Info :
*----------------
* | This version: V1.0
* | Date : 2020-12-25
* | Info :
* -----------------------------------------------------------------------------
#
# 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 "epd4in01f.h"
#include "imagedata.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;
};
/******************************************************************************
function : Initialize the e-Paper register
parameter:
******************************************************************************/
int Epd::Init(void) {
if (IfInit() != 0) {
return -1;
}
Reset();
EPD_4IN01F_BusyHigh();
SendCommand(0x00);
SendData(0x2f);
SendData(0x00);
SendCommand(0x01);
SendData(0x37);
SendData(0x00);
SendData(0x05);
SendData(0x05);
SendCommand(0x03);
SendData(0x00);
SendCommand(0x06);
SendData(0xC7);
SendData(0xC7);
SendData(0x1D);
SendCommand(0x41);
SendData(0x00);
SendCommand(0x50);
SendData(0x37);
SendCommand(0x60);
SendData(0x22);
SendCommand(0x61);
SendData(0x02);
SendData(0x80);
SendData(0x01);
SendData(0x90);
SendCommand(0xE3);
SendData(0xAA);
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);
}
void Epd::EPD_4IN01F_BusyHigh(void)// If BUSYN=0 then waiting
{
while(!(DigitalRead(BUSY_PIN)));
}
void Epd::EPD_4IN01F_BusyLow(void)// If BUSYN=1 then waiting
{
while(DigitalRead(BUSY_PIN));
}
/**
* @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(1);
DigitalWrite(reset_pin, HIGH);
DelayMs(200);
}
/******************************************************************************
function : Sends the image buffer in RAM to e-Paper and displays
parameter:
******************************************************************************/
void Epd::EPD_4IN01F_Display(const UBYTE *image) {
unsigned long i,j;
SendCommand(0x61);//Set Resolution setting
SendData(0x02);
SendData(0x80);
SendData(0x01);
SendData(0x90);
SendCommand(0x10);
for(i=0; i<height; i++) {
for(j=0; j<width/2; j++) {
SendData(image[j+((width/2)*i)]);
}
}
SendCommand(0x04);//0x04
EPD_4IN01F_BusyHigh();
SendCommand(0x12);//0x12
EPD_4IN01F_BusyHigh();
SendCommand(0x02); //0x02
EPD_4IN01F_BusyLow();
DelayMs(200);
}
/******************************************************************************
function : Sends the part image buffer in RAM to e-Paper and displays
parameter:
******************************************************************************/
void Epd::EPD_4IN01F_Display_part(const UBYTE *image, UWORD xstart, UWORD ystart,
UWORD image_width, UWORD image_heigh)
{
unsigned long i,j;
SendCommand(0x61);//Set Resolution setting
SendData(0x02);
SendData(0x80);
SendData(0x01);
SendData(0x90);
SendCommand(0x10);
for(i=0; i<height; i++) {
for(j=0; j< width/2; j++) {
if(i<image_heigh+ystart && i>=ystart && j<(image_width+xstart)/2 && j>=xstart/2) {
SendData(pgm_read_byte(&image[(j-xstart/2) + (image_width/2*(i-ystart))]));
}
else {
SendData(0x11);
}
}
}
SendCommand(0x04);//0x04
EPD_4IN01F_BusyHigh();
SendCommand(0x12);//0x12
EPD_4IN01F_BusyHigh();
SendCommand(0x02); //0x02
EPD_4IN01F_BusyLow();
DelayMs(200);
}
/******************************************************************************
function :
Clear screen
******************************************************************************/
void Epd::Clear(UBYTE color) {
SendCommand(0x61);//Set Resolution setting
SendData(0x02);
SendData(0x80);
SendData(0x01);
SendData(0x90);
SendCommand(0x10);
for(int i=0; i<width/2; i++) {
for(int j=0; j<height; j++) {
SendData((color<<4)|color);
}
}
SendCommand(0x04);//0x04
EPD_4IN01F_BusyHigh();
SendCommand(0x12);//0x12
EPD_4IN01F_BusyHigh();
SendCommand(0x02); //0x02
EPD_4IN01F_BusyLow();
DelayMs(500);
}
/**
* @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
* You can use EPD_Reset() to awaken
*/
void Epd::Sleep(void) {
DelayMs(100);
SendCommand(0x07);
SendData(0xA5);
DelayMs(100);
DigitalWrite(RST_PIN, 0); // Reset
}
/* END OF FILE */