417 lines
12 KiB
C++
417 lines
12 KiB
C++
/**
|
|
* @filename : epd2in7b.cpp
|
|
* @brief : Implements for Dual-color 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 "epd2in7b.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_ON);
|
|
WaitUntilIdle();
|
|
|
|
SendCommand(PANEL_SETTING);
|
|
SendData(0xaf); //KW-BF KWR-AF BWROTP 0f
|
|
|
|
SendCommand(PLL_CONTROL);
|
|
SendData(0x3a); //3A 100HZ 29 150Hz 39 200HZ 31 171HZ
|
|
|
|
SendCommand(POWER_SETTING);
|
|
SendData(0x03); // VDS_EN, VDG_EN
|
|
SendData(0x00); // VCOM_HV, VGHL_LV[1], VGHL_LV[0]
|
|
SendData(0x2b); // VDH
|
|
SendData(0x2b); // VDL
|
|
SendData(0x09); // VDHR
|
|
|
|
SendCommand(BOOSTER_SOFT_START);
|
|
SendData(0x07);
|
|
SendData(0x07);
|
|
SendData(0x17);
|
|
|
|
// Power optimization
|
|
SendCommand(0xF8);
|
|
SendData(0x60);
|
|
SendData(0xA5);
|
|
|
|
// Power optimization
|
|
SendCommand(0xF8);
|
|
SendData(0x89);
|
|
SendData(0xA5);
|
|
|
|
// Power optimization
|
|
SendCommand(0xF8);
|
|
SendData(0x90);
|
|
SendData(0x00);
|
|
|
|
// Power optimization
|
|
SendCommand(0xF8);
|
|
SendData(0x93);
|
|
SendData(0x2A);
|
|
|
|
// Power optimization
|
|
SendCommand(0xF8);
|
|
SendData(0x73);
|
|
SendData(0x41);
|
|
|
|
SendCommand(VCM_DC_SETTING_REGISTER);
|
|
SendData(0x12);
|
|
SendCommand(VCOM_AND_DATA_INTERVAL_SETTING);
|
|
SendData(0x87); // define by OTP
|
|
|
|
SetLut();
|
|
|
|
SendCommand(PARTIAL_DISPLAY_REFRESH);
|
|
SendData(0x00);
|
|
/* 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, HIGH);
|
|
DelayMs(200);
|
|
DigitalWrite(reset_pin, LOW);
|
|
DelayMs(10);
|
|
DigitalWrite(reset_pin, HIGH);
|
|
DelayMs(200);
|
|
}
|
|
|
|
/**
|
|
* @brief: set the look-up tables
|
|
*/
|
|
void Epd::SetLut(void) {
|
|
unsigned int count;
|
|
SendCommand(LUT_FOR_VCOM); //vcom
|
|
for(count = 0; count < 44; count++) {
|
|
SendData(lut_vcom_dc[count]);
|
|
}
|
|
|
|
SendCommand(LUT_WHITE_TO_WHITE); //ww --
|
|
for(count = 0; count < 42; count++) {
|
|
SendData(lut_ww[count]);
|
|
}
|
|
|
|
SendCommand(LUT_BLACK_TO_WHITE); //bw r
|
|
for(count = 0; count < 42; count++) {
|
|
SendData(lut_bw[count]);
|
|
}
|
|
|
|
SendCommand(LUT_WHITE_TO_BLACK); //wb w
|
|
for(count = 0; count < 42; count++) {
|
|
SendData(lut_bb[count]);
|
|
}
|
|
|
|
SendCommand(LUT_BLACK_TO_BLACK); //bb b
|
|
for(count = 0; count < 42; count++) {
|
|
SendData(lut_wb[count]);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief: transmit partial data to the SRAM
|
|
*/
|
|
void Epd::TransmitPartial(const unsigned char* buffer_black, const unsigned char* buffer_red, int x, int y, int w, int l) {
|
|
if (buffer_black != NULL) {
|
|
SendCommand(PARTIAL_DATA_START_TRANSMISSION_1);
|
|
SendData(x >> 8);
|
|
SendData(x & 0xf8); // x should be the multiple of 8, the last 3 bit will always be ignored
|
|
SendData(y >> 8);
|
|
SendData(y & 0xff);
|
|
SendData(w >> 8);
|
|
SendData(w & 0xf8); // w (width) should be the multiple of 8, the last 3 bit will always be ignored
|
|
SendData(l >> 8);
|
|
SendData(l & 0xff);
|
|
DelayMs(2);
|
|
for(int i = 0; i < w / 8 * l; i++) {
|
|
SendData(buffer_black[i]);
|
|
}
|
|
DelayMs(2);
|
|
}
|
|
if (buffer_red != NULL) {
|
|
SendCommand(PARTIAL_DATA_START_TRANSMISSION_2);
|
|
SendData(x >> 8);
|
|
SendData(x & 0xf8); // x should be the multiple of 8, the last 3 bit will always be ignored
|
|
SendData(y >> 8);
|
|
SendData(y & 0xff);
|
|
SendData(w >> 8);
|
|
SendData(w & 0xf8); // w (width) should be the multiple of 8, the last 3 bit will always be ignored
|
|
SendData(l >> 8);
|
|
SendData(l & 0xff);
|
|
DelayMs(2);
|
|
for(int i = 0; i < w / 8 * l; i++) {
|
|
SendData(buffer_red[i]);
|
|
}
|
|
DelayMs(2);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief: transmit partial data to the black part of SRAM
|
|
*/
|
|
void Epd::TransmitPartialBlack(const unsigned char* buffer_black, int x, int y, int w, int l) {
|
|
if (buffer_black != NULL) {
|
|
SendCommand(PARTIAL_DATA_START_TRANSMISSION_1);
|
|
SendData(x >> 8);
|
|
SendData(x & 0xf8); // x should be the multiple of 8, the last 3 bit will always be ignored
|
|
SendData(y >> 8);
|
|
SendData(y & 0xff);
|
|
SendData(w >> 8);
|
|
SendData(w & 0xf8); // w (width) should be the multiple of 8, the last 3 bit will always be ignored
|
|
SendData(l >> 8);
|
|
SendData(l & 0xff);
|
|
DelayMs(2);
|
|
for(int i = 0; i < w / 8 * l; i++) {
|
|
SendData(buffer_black[i]);
|
|
}
|
|
DelayMs(2);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief: transmit partial data to the red part of SRAM
|
|
*/
|
|
void Epd::TransmitPartialRed(const unsigned char* buffer_red, int x, int y, int w, int l) {
|
|
if (buffer_red != NULL) {
|
|
SendCommand(PARTIAL_DATA_START_TRANSMISSION_2);
|
|
SendData(x >> 8);
|
|
SendData(x & 0xf8); // x should be the multiple of 8, the last 3 bit will always be ignored
|
|
SendData(y >> 8);
|
|
SendData(y & 0xff);
|
|
SendData(w >> 8);
|
|
SendData(w & 0xf8); // w (width) should be the multiple of 8, the last 3 bit will always be ignored
|
|
SendData(l >> 8);
|
|
SendData(l & 0xff);
|
|
DelayMs(2);
|
|
for(int i = 0; i < w / 8 * l; i++) {
|
|
SendData(buffer_red[i]);
|
|
}
|
|
DelayMs(2);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief: refreshes a specific part of the display
|
|
*/
|
|
void Epd::RefreshPartial(int x, int y, int w, int l) {
|
|
SendCommand(PARTIAL_DISPLAY_REFRESH);
|
|
SendData(x >> 8);
|
|
SendData(x & 0xf8); // x should be the multiple of 8, the last 3 bit will always be ignored
|
|
SendData(y >> 8);
|
|
SendData(y & 0xff);
|
|
SendData(w >> 8);
|
|
SendData(w & 0xf8); // w (width) should be the multiple of 8, the last 3 bit will always be ignored
|
|
SendData(l >> 8);
|
|
SendData(l & 0xff);
|
|
|
|
WaitUntilIdle();
|
|
}
|
|
|
|
/**
|
|
* @brief: refresh and displays the frame
|
|
*/
|
|
void Epd::DisplayFrame(const unsigned char* frame_buffer_black, const unsigned char* frame_buffer_red) {
|
|
SendCommand(TCON_RESOLUTION);
|
|
SendData(width >> 8);
|
|
SendData(width & 0xff); //176
|
|
SendData(height >> 8);
|
|
SendData(height & 0xff); //264
|
|
|
|
if (frame_buffer_black != NULL) {
|
|
SendCommand(DATA_START_TRANSMISSION_1);
|
|
DelayMs(2);
|
|
for(int i = 0; i < width * height / 8; i++) {
|
|
SendData(pgm_read_byte(&frame_buffer_black[i]));
|
|
}
|
|
DelayMs(2);
|
|
}
|
|
if (frame_buffer_red != NULL) {
|
|
SendCommand(DATA_START_TRANSMISSION_2);
|
|
DelayMs(2);
|
|
for(int i = 0; i < width * height / 8; i++) {
|
|
SendData(pgm_read_byte(&frame_buffer_red[i]));
|
|
}
|
|
DelayMs(2);
|
|
}
|
|
SendCommand(DISPLAY_REFRESH);
|
|
|
|
WaitUntilIdle();
|
|
}
|
|
|
|
/**
|
|
* @brief: clear the frame data from the SRAM, this won't refresh the display
|
|
*/
|
|
void Epd::ClearFrame(void) {
|
|
SendCommand(TCON_RESOLUTION);
|
|
SendData(width >> 8);
|
|
SendData(width & 0xff); //176
|
|
SendData(height >> 8);
|
|
SendData(height & 0xff); //264
|
|
|
|
SendCommand(DATA_START_TRANSMISSION_1);
|
|
DelayMs(2);
|
|
for(int i = 0; i < width * height / 8; i++) {
|
|
SendData(0x00);
|
|
}
|
|
DelayMs(2);
|
|
SendCommand(DATA_START_TRANSMISSION_2);
|
|
DelayMs(2);
|
|
for(int i = 0; i < width * height / 8; i++) {
|
|
SendData(0x00);
|
|
}
|
|
DelayMs(2);
|
|
}
|
|
|
|
/**
|
|
* @brief: This displays the frame data from SRAM
|
|
*/
|
|
void Epd::DisplayFrame(void) {
|
|
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::Reset() to awaken and use Epd::Init() to initialize.
|
|
*/
|
|
void Epd::Sleep() {
|
|
SendCommand(DEEP_SLEEP);
|
|
SendData(0xa5);
|
|
}
|
|
|
|
const unsigned char lut_vcom_dc[] =
|
|
{
|
|
0x00, 0x00,
|
|
0x00, 0x1A, 0x1A, 0x00, 0x00, 0x01,
|
|
0x00, 0x0A, 0x0A, 0x00, 0x00, 0x08,
|
|
0x00, 0x0E, 0x01, 0x0E, 0x01, 0x10,
|
|
0x00, 0x0A, 0x0A, 0x00, 0x00, 0x08,
|
|
0x00, 0x04, 0x10, 0x00, 0x00, 0x05,
|
|
0x00, 0x03, 0x0E, 0x00, 0x00, 0x0A,
|
|
0x00, 0x23, 0x00, 0x00, 0x00, 0x01
|
|
};
|
|
|
|
//R21H
|
|
const unsigned char lut_ww[] =
|
|
{
|
|
0x90, 0x1A, 0x1A, 0x00, 0x00, 0x01,
|
|
0x40, 0x0A, 0x0A, 0x00, 0x00, 0x08,
|
|
0x84, 0x0E, 0x01, 0x0E, 0x01, 0x10,
|
|
0x80, 0x0A, 0x0A, 0x00, 0x00, 0x08,
|
|
0x00, 0x04, 0x10, 0x00, 0x00, 0x05,
|
|
0x00, 0x03, 0x0E, 0x00, 0x00, 0x0A,
|
|
0x00, 0x23, 0x00, 0x00, 0x00, 0x01
|
|
};
|
|
|
|
//R22H r
|
|
const unsigned char lut_bw[] =
|
|
{
|
|
0xA0, 0x1A, 0x1A, 0x00, 0x00, 0x01,
|
|
0x00, 0x0A, 0x0A, 0x00, 0x00, 0x08,
|
|
0x84, 0x0E, 0x01, 0x0E, 0x01, 0x10,
|
|
0x90, 0x0A, 0x0A, 0x00, 0x00, 0x08,
|
|
0xB0, 0x04, 0x10, 0x00, 0x00, 0x05,
|
|
0xB0, 0x03, 0x0E, 0x00, 0x00, 0x0A,
|
|
0xC0, 0x23, 0x00, 0x00, 0x00, 0x01
|
|
};
|
|
|
|
//R23H w
|
|
const unsigned char lut_bb[] =
|
|
{
|
|
0x90, 0x1A, 0x1A, 0x00, 0x00, 0x01,
|
|
0x40, 0x0A, 0x0A, 0x00, 0x00, 0x08,
|
|
0x84, 0x0E, 0x01, 0x0E, 0x01, 0x10,
|
|
0x80, 0x0A, 0x0A, 0x00, 0x00, 0x08,
|
|
0x00, 0x04, 0x10, 0x00, 0x00, 0x05,
|
|
0x00, 0x03, 0x0E, 0x00, 0x00, 0x0A,
|
|
0x00, 0x23, 0x00, 0x00, 0x00, 0x01
|
|
};
|
|
|
|
//R24H b
|
|
const unsigned char lut_wb[] =
|
|
{
|
|
0x90, 0x1A, 0x1A, 0x00, 0x00, 0x01,
|
|
0x20, 0x0A, 0x0A, 0x00, 0x00, 0x08,
|
|
0x84, 0x0E, 0x01, 0x0E, 0x01, 0x10,
|
|
0x10, 0x0A, 0x0A, 0x00, 0x00, 0x08,
|
|
0x00, 0x04, 0x10, 0x00, 0x00, 0x05,
|
|
0x00, 0x03, 0x0E, 0x00, 0x00, 0x0A,
|
|
0x00, 0x23, 0x00, 0x00, 0x00, 0x01
|
|
};
|
|
|
|
|
|
|
|
/* END OF FILE */
|