e-paper-display/bcm2835-1.71/e-Paper/Arduino/epd1in54b/epd1in54b.cpp

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2024-01-31 22:04:09 +00:00
/**
* @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.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();
SendCommand(POWER_SETTING);
SendData(0x07);
SendData(0x00);
SendData(0x08);
SendData(0x00);
SendCommand(BOOSTER_SOFT_START);
SendData(0x07);
SendData(0x07);
SendData(0x07);
SendCommand(POWER_ON);
WaitUntilIdle();
SendCommand(PANEL_SETTING);
SendData(0xcf);
SendCommand(VCOM_AND_DATA_INTERVAL_SETTING);
SendData(0x17);
SendCommand(PLL_CONTROL);
SendData(0x39);
SendCommand(TCON_RESOLUTION);
SendData(0xC8);
SendData(0x00);
SendData(0xC8);
SendCommand(VCM_DC_SETTING_REGISTER);
SendData(0x0E);
SetLutBw();
SetLutRed();
/* 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(DigitalRead(busy_pin) == 0) { //0: busy, 1: idle
DelayMs(100);
}
}
/**
* @brief: module reset.
* often used to awaken the module in deep sleep,
* see Epd::Sleep();
*/
void Epd::Reset(void) {
DigitalWrite(reset_pin, LOW); //module reset
DelayMs(200);
DigitalWrite(reset_pin, HIGH);
DelayMs(200);
}
/**
* @brief: set the look-up tables
*/
void Epd::SetLutBw(void) {
unsigned int count;
SendCommand(0x20); //g vcom
for(count = 0; count < 15; count++) {
SendData(lut_vcom0[count]);
}
SendCommand(0x21); //g ww --
for(count = 0; count < 15; count++) {
SendData(lut_w[count]);
}
SendCommand(0x22); //g bw r
for(count = 0; count < 15; count++) {
SendData(lut_b[count]);
}
SendCommand(0x23); //g wb w
for(count = 0; count < 15; count++) {
SendData(lut_g1[count]);
}
SendCommand(0x24); //g bb b
for(count = 0; count < 15; count++) {
SendData(lut_g2[count]);
}
}
void Epd::SetLutRed(void) {
unsigned int count;
SendCommand(0x25);
for(count = 0; count < 15; count++) {
SendData(lut_vcom1[count]);
}
SendCommand(0x26);
for(count = 0; count < 15; count++) {
SendData(lut_red0[count]);
}
SendCommand(0x27);
for(count = 0; count < 15; count++) {
SendData(lut_red1[count]);
}
}
void Epd::DisplayFrame(const unsigned char* frame_buffer_black, const unsigned char* frame_buffer_red) {
unsigned char temp;
if (frame_buffer_black != NULL) {
SendCommand(DATA_START_TRANSMISSION_1);
DelayMs(2);
for (int i = 0; i < this->width * this->height / 8; i++) {
temp = 0x00;
for (int bit = 0; bit < 4; bit++) {
if ((pgm_read_byte(&frame_buffer_black[i]) & (0x80 >> bit)) != 0) {
temp |= 0xC0 >> (bit * 2);
}
}
SendData(temp);
temp = 0x00;
for (int bit = 4; bit < 8; bit++) {
if ((pgm_read_byte(&frame_buffer_black[i]) & (0x80 >> bit)) != 0) {
temp |= 0xC0 >> ((bit - 4) * 2);
}
}
SendData(temp);
}
DelayMs(2);
}
if (frame_buffer_red != NULL) {
SendCommand(DATA_START_TRANSMISSION_2);
DelayMs(2);
for (int i = 0; i < this->width * this->height / 8; i++) {
SendData(pgm_read_byte(&frame_buffer_red[i]));
}
DelayMs(2);
}
SendCommand(DISPLAY_REFRESH);
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(VCOM_AND_DATA_INTERVAL_SETTING);
SendData(0x17);
SendCommand(VCM_DC_SETTING_REGISTER); //to solve Vcom drop
SendData(0x00);
SendCommand(POWER_SETTING); //power setting
SendData(0x02); //gate switch to external
SendData(0x00);
SendData(0x00);
SendData(0x00);
WaitUntilIdle();
SendCommand(POWER_OFF); //power off
}
const unsigned char lut_vcom0[] =
{
0x0E, 0x14, 0x01, 0x0A, 0x06, 0x04, 0x0A, 0x0A,
0x0F, 0x03, 0x03, 0x0C, 0x06, 0x0A, 0x00
};
const unsigned char lut_w[] =
{
0x0E, 0x14, 0x01, 0x0A, 0x46, 0x04, 0x8A, 0x4A,
0x0F, 0x83, 0x43, 0x0C, 0x86, 0x0A, 0x04
};
const unsigned char lut_b[] =
{
0x0E, 0x14, 0x01, 0x8A, 0x06, 0x04, 0x8A, 0x4A,
0x0F, 0x83, 0x43, 0x0C, 0x06, 0x4A, 0x04
};
const unsigned char lut_g1[] =
{
0x8E, 0x94, 0x01, 0x8A, 0x06, 0x04, 0x8A, 0x4A,
0x0F, 0x83, 0x43, 0x0C, 0x06, 0x0A, 0x04
};
const unsigned char lut_g2[] =
{
0x8E, 0x94, 0x01, 0x8A, 0x06, 0x04, 0x8A, 0x4A,
0x0F, 0x83, 0x43, 0x0C, 0x06, 0x0A, 0x04
};
const unsigned char lut_vcom1[] =
{
0x03, 0x1D, 0x01, 0x01, 0x08, 0x23, 0x37, 0x37,
0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
};
const unsigned char lut_red0[] =
{
0x83, 0x5D, 0x01, 0x81, 0x48, 0x23, 0x77, 0x77,
0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
};
const unsigned char lut_red1[] =
{
0x03, 0x1D, 0x01, 0x01, 0x08, 0x23, 0x37, 0x37,
0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
};
/* END OF FILE */