Tasmota/lib/lib_display/Epaper_42-gemu-1.0/epd4in2.cpp

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/**
* @filename : epd4in2.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 <epd4in2.h>
//#define SSPI_USEANYPIN
extern uint8_t *buffer;
uint8_t epd42_mode;
Epd42::Epd42(int16_t width, int16_t height) :
Paint(width,height) {
}
void Epd42::DisplayOnff(int8_t on) {
}
#define DISPLAY_INIT_MODE 0
#define DISPLAY_INIT_PARTIAL 1
#define DISPLAY_INIT_FULL 2
void Epd42::Updateframe() {
//SetFrameMemory(buffer, 0, 0, EPD_WIDTH,EPD_HEIGHT);
SetPartialWindow(buffer, 0, 0, width,height,2);
if (epd42_mode==DISPLAY_INIT_PARTIAL) {
DisplayFrameQuick();
} else {
DisplayFrame();
}
//Serial.printf("update\n");
}
void Epd42::DisplayInit(int8_t p,int8_t size,int8_t rot,int8_t font) {
// ignore update mode
if (p==DISPLAY_INIT_PARTIAL) {
epd42_mode=p;
//Init(lut_partial_update);
//ClearFrameMemory(0xFF); // bit set = white, bit reset = black
DisplayFrameQuick();
delay(500);
return;
//Serial.printf("partial\n");
} else if (p==DISPLAY_INIT_FULL) {
epd42_mode=p;
//Init(lut_full_update);
//ClearFrameMemory(0xFF); // bit set = white, bit reset = black
DisplayFrame();
delay(4500);
return;
//Serial.printf("full\n");
} else {
epd42_mode=DISPLAY_INIT_FULL;
Updateframe();
}
setRotation(rot);
invertDisplay(false);
setTextWrap(false); // Allow text to run off edges
cp437(true);
setTextFont(font);
setTextSize(size);
setTextColor(WHITE,BLACK);
setCursor(0,0);
fillScreen(BLACK);
}
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void Epd42::Begin(int16_t cs,int16_t mosi,int16_t sclk) {
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cs_pin=cs;
mosi_pin=mosi;
sclk_pin=sclk;
}
void Epd42::Init(int8_t p) {
epd42_mode=p;
DisplayFrame();
delay(4000);
}
int Epd42::Init(void) {
pinMode(cs_pin, OUTPUT);
pinMode(mosi_pin, OUTPUT);
pinMode(sclk_pin, OUTPUT);
digitalWrite(cs_pin,HIGH);
digitalWrite(mosi_pin,LOW);
digitalWrite(sclk_pin,LOW);
width = EPD_WIDTH42;
height = EPD_HEIGHT42;
Reset();
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SendCommand(EPD_42_POWER_SETTING);
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SendData(0x03); // VDS_EN, VDG_EN
SendData(0x00); // VCOM_HV, VGHL_LV[1], VGHL_LV[0]
SendData(0x2b); // VDH
SendData(0x2b); // VDL
SendData(0xff); // VDHR
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SendCommand(EPD_42_BOOSTER_SOFT_START);
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SendData(0x17);
SendData(0x17);
SendData(0x17); //07 0f 17 1f 27 2F 37 2f
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SendCommand(EPD_42_POWER_ON);
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WaitUntilIdle();
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SendCommand(EPD_42_PANEL_SETTING);
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// SendData(0xbf); // KW-BF KWR-AF BWROTP 0f
// SendData(0x0b);
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// SendData(0x0F); //300x400 Red mode, LUT from OTP
// SendData(0x1F); //300x400 B/W mode, LUT from OTP
SendData(0x3F); //300x400 B/W mode, LUT set by register
// SendData(0x2F); //300x400 Red mode, LUT set by register
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SendCommand(EPD_42_PLL_CONTROL);
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SendData(0x3C); // 3A 100Hz 29 150Hz 39 200Hz 31 171Hz 3C 50Hz (default) 0B 10Hz
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//SendData(0x0B); //0B is 10Hz
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/* EPD hardware init end */
return 0;
}
/**
* @brief: basic function for sending commands
*/
void Epd42::SendCommand(unsigned char command) {
//DigitalWrite(dc_pin, LOW);
//SpiTransfer(command);
fastSPIwrite(command,0);
}
/**
* @brief: basic function for sending data
*/
void Epd42::SendData(unsigned char data) {
//DigitalWrite(dc_pin, HIGH);
//SpiTransfer(data);
fastSPIwrite(data,1);
}
/**
* @brief: Wait until the busy_pin goes HIGH
*/
void Epd42::WaitUntilIdle(void) {
// while(DigitalRead(busy_pin) == 0) { //0: busy, 1: idle
// DelayMs(1);
// }
}
/**
* @brief: module reset.
* often used to awaken the module in deep sleep,
* see Epd::Sleep();
*/
void Epd42::Reset(void) {
//DigitalWrite(reset_pin, LOW);
//DelayMs(200);
//DigitalWrite(reset_pin, HIGH);
//DelayMs(200);
}
/**
* @brief: transmit partial data to the SRAM. The final parameter chooses between dtm=1 and dtm=2
*/
void Epd42::SetPartialWindow(const unsigned char* buffer_black, int x, int y, int w, int l, int dtm) {
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SendCommand(EPD_42_PARTIAL_IN);
SendCommand(EPD_42_PARTIAL_WINDOW);
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SendData(x >> 8);
SendData(x & 0xf8); // x should be the multiple of 8, the last 3 bit will always be ignored
SendData(((x & 0xf8) + w - 1) >> 8);
SendData(((x & 0xf8) + w - 1) | 0x07);
SendData(y >> 8);
SendData(y & 0xff);
SendData((y + l - 1) >> 8);
SendData((y + l - 1) & 0xff);
SendData(0x01); // Gates scan both inside and outside of the partial window. (default)
// DelayMs(2);
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SendCommand((dtm == 1) ? EPD_42_DATA_START_TRANSMISSION_1 : EPD_42_DATA_START_TRANSMISSION_2);
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if (buffer_black != NULL) {
for(int i = 0; i < w / 8 * l; i++) {
SendData(buffer_black[i]^0xff);
}
} else {
for(int i = 0; i < w / 8 * l; i++) {
SendData(0x00);
}
}
// DelayMs(2);
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SendCommand(EPD_42_PARTIAL_OUT);
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}
/**
* @brief: set the look-up table
*/
void Epd42::SetLut(void) {
unsigned int count;
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SendCommand(EPD_42_LUT_FOR_VCOM); //vcom
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for(count = 0; count < 44; count++) {
SendData(pgm_read_byte(&lut_vcom0[count]));
}
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SendCommand(EPD_42_LUT_WHITE_TO_WHITE); //ww --
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for(count = 0; count < 42; count++) {
SendData(pgm_read_byte(&lut_ww[count]));
}
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SendCommand(EPD_42_LUT_BLACK_TO_WHITE); //bw r
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for(count = 0; count < 42; count++) {
SendData(pgm_read_byte(&lut_bw[count]));
}
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SendCommand(EPD_42_LUT_WHITE_TO_BLACK); //wb w
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for(count = 0; count < 42; count++) {
SendData(pgm_read_byte(&lut_wb[count]));
}
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SendCommand(EPD_42_LUT_BLACK_TO_BLACK); //bb b
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for(count = 0; count < 42; count++) {
SendData(pgm_read_byte(&lut_bb[count]));
}
}
/**
* @brief: set the look-up table for quick display (partial refresh)
*/
void Epd42::SetLutQuick(void) {
unsigned int count;
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SendCommand(EPD_42_LUT_FOR_VCOM); //vcom
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for(count = 0; count < 44; count++) {
SendData(pgm_read_byte(&lut_vcom0_quick[count]));
}
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SendCommand(EPD_42_LUT_WHITE_TO_WHITE); //ww --
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for(count = 0; count < 42; count++) {
SendData(pgm_read_byte(&lut_ww_quick[count]));
}
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SendCommand(EPD_42_LUT_BLACK_TO_WHITE); //bw r
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for(count = 0; count < 42; count++) {
SendData(pgm_read_byte(&lut_bw_quick[count]));
}
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SendCommand(EPD_42_LUT_WHITE_TO_BLACK); //wb w
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for(count = 0; count < 42; count++) {
SendData(pgm_read_byte(&lut_wb_quick[count]));
}
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SendCommand(EPD_42_LUT_BLACK_TO_BLACK); //bb b
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for(count = 0; count < 42; count++) {
SendData(pgm_read_byte(&lut_bb_quick[count]));
}
}
/**
* @brief: refresh and displays the frame
*/
void Epd42::DisplayFrame(const unsigned char* frame_buffer) {
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SendCommand(EPD_42_RESOLUTION_SETTING);
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SendData(width >> 8);
SendData(width & 0xff);
SendData(height >> 8);
SendData(height & 0xff);
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SendCommand(EPD_42_VCM_DC_SETTING);
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SendData(0x12);
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SendCommand(EPD_42_VCOM_AND_DATA_INTERVAL_SETTING);
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SendCommand(0x97); //VBDF 17|D7 VBDW 97 VBDB 57 VBDF F7 VBDW 77 VBDB 37 VBDR B7
if (frame_buffer != NULL) {
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SendCommand(EPD_42_DATA_START_TRANSMISSION_1);
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for(int i = 0; i < width / 8 * height; i++) {
SendData(0xFF); // bit set: white, bit reset: black
}
delay(2);
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SendCommand(EPD_42_DATA_START_TRANSMISSION_2);
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for(int i = 0; i < width / 8 * height; i++) {
SendData(pgm_read_byte(&frame_buffer[i]));
}
delay(2);
}
SetLut();
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SendCommand(EPD_42_DISPLAY_REFRESH);
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delay(100);
WaitUntilIdle();
}
/**
* @brief: clear the frame data from the SRAM, this won't refresh the display
*/
void Epd42::ClearFrame(void) {
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SendCommand(EPD_42_RESOLUTION_SETTING);
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SendData(width >> 8);
SendData(width & 0xff);
SendData(height >> 8);
SendData(height & 0xff);
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SendCommand(EPD_42_DATA_START_TRANSMISSION_1);
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delay(2);
for(int i = 0; i < width / 8 * height; i++) {
SendData(0xFF);
}
delay(2);
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SendCommand(EPD_42_DATA_START_TRANSMISSION_2);
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delay(2);
for(int i = 0; i < width / 8 * height; i++) {
SendData(0xFF);
}
delay(2);
}
/**
* @brief: This displays the frame data from SRAM
*/
void Epd42::DisplayFrame(void) {
SetLut();
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SendCommand(EPD_42_DISPLAY_REFRESH);
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delay(100);
WaitUntilIdle();
}
void Epd42::DisplayFrameQuick(void) {
SetLutQuick();
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SendCommand(EPD_42_DISPLAY_REFRESH);
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// DelayMs(100);
// 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 Epd42::Sleep() {
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SendCommand(EPD_42_VCOM_AND_DATA_INTERVAL_SETTING);
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SendData(0x17); //border floating
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SendCommand(EPD_42_VCM_DC_SETTING); //VCOM to 0V
SendCommand(EPD_42_PANEL_SETTING);
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delay(100);
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SendCommand(EPD_42_POWER_SETTING); //VG&VS to 0V fast
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SendData(0x00);
SendData(0x00);
SendData(0x00);
SendData(0x00);
SendData(0x00);
delay(100);
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SendCommand(EPD_42_POWER_OFF); //power off
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WaitUntilIdle();
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SendCommand(EPD_42_DEEP_SLEEP); //deep sleep
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SendData(0xA5);
}
const unsigned char lut_vcom0[] PROGMEM =
{
0x40, 0x17, 0x00, 0x00, 0x00, 0x02,
0x00, 0x17, 0x17, 0x00, 0x00, 0x02,
0x00, 0x0A, 0x01, 0x00, 0x00, 0x01,
0x00, 0x0E, 0x0E, 0x00, 0x00, 0x02,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
};
const unsigned char lut_vcom0_quick[] PROGMEM =
{
0x00, 0x0E, 0x00, 0x00, 0x00, 0x01,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
};
const unsigned char lut_ww[] PROGMEM =
{
0x40, 0x17, 0x00, 0x00, 0x00, 0x02,
0x90, 0x17, 0x17, 0x00, 0x00, 0x02,
0x40, 0x0A, 0x01, 0x00, 0x00, 0x01,
0xA0, 0x0E, 0x0E, 0x00, 0x00, 0x02,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
};
const unsigned char lut_ww_quick[] PROGMEM =
{
0xA0, 0x0E, 0x00, 0x00, 0x00, 0x01,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
};
const unsigned char lut_bw[] PROGMEM =
{
0x40, 0x17, 0x00, 0x00, 0x00, 0x02,
0x90, 0x17, 0x17, 0x00, 0x00, 0x02,
0x40, 0x0A, 0x01, 0x00, 0x00, 0x01,
0xA0, 0x0E, 0x0E, 0x00, 0x00, 0x02,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
};
const unsigned char lut_bw_quick[] PROGMEM =
{
0xA0, 0x0E, 0x00, 0x00, 0x00, 0x01,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
};
const unsigned char lut_bb[] PROGMEM =
{
0x80, 0x17, 0x00, 0x00, 0x00, 0x02,
0x90, 0x17, 0x17, 0x00, 0x00, 0x02,
0x80, 0x0A, 0x01, 0x00, 0x00, 0x01,
0x50, 0x0E, 0x0E, 0x00, 0x00, 0x02,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
};
const unsigned char lut_bb_quick[] PROGMEM =
{
0x50, 0x0E, 0x00, 0x00, 0x00, 0x01,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
};
const unsigned char lut_wb[] PROGMEM =
{
0x80, 0x17, 0x00, 0x00, 0x00, 0x02,
0x90, 0x17, 0x17, 0x00, 0x00, 0x02,
0x80, 0x0A, 0x01, 0x00, 0x00, 0x01,
0x50, 0x0E, 0x0E, 0x00, 0x00, 0x02,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
};
const unsigned char lut_wb_quick[] PROGMEM =
{
0x50, 0x0E, 0x00, 0x00, 0x00, 0x01,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
};
#define PIN_OUT_SET 0x60000304
#define PIN_OUT_CLEAR 0x60000308
#ifdef ESP32
#define SSPI_USEANYPIN 1
#define PWRITE digitalWrite
#else
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#define PWRITE ydigitalWrite
#endif
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#ifndef SSPI_USEANYPIN
// uses about 2.75 usecs, 365 kb /sec
// however does not work with GPIO 16 !!!!
void ICACHE_RAM_ATTR Epd42::fastSPIwrite(uint8_t d,uint8_t dc) {
WRITE_PERI_REG( PIN_OUT_CLEAR, 1<<cs_pin);
WRITE_PERI_REG( PIN_OUT_CLEAR, 1<<sclk_pin);
if(dc) WRITE_PERI_REG( PIN_OUT_SET, 1<<mosi_pin);
else WRITE_PERI_REG( PIN_OUT_CLEAR, 1<<mosi_pin);
WRITE_PERI_REG( PIN_OUT_SET, 1<<sclk_pin);
for(uint8_t bit = 0x80; bit; bit >>= 1) {
WRITE_PERI_REG( PIN_OUT_CLEAR, 1<<sclk_pin);
if(d&bit) WRITE_PERI_REG( PIN_OUT_SET, 1<<mosi_pin);
else WRITE_PERI_REG( PIN_OUT_CLEAR, 1<<mosi_pin);
WRITE_PERI_REG( PIN_OUT_SET, 1<<sclk_pin);
}
WRITE_PERI_REG( PIN_OUT_SET, 1<<cs_pin);
}
#else
#ifndef ESP32
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extern void ICACHE_RAM_ATTR ydigitalWrite(uint8_t pin, uint8_t val) {
//stopWaveform(pin);
if(pin < 16){
if(val) GPOS = (1 << pin);
else GPOC = (1 << pin);
} else if(pin == 16){
if(val) GP16O |= 1;
else GP16O &= ~1;
}
}
#endif
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// about 13 us => 76 kb / sec
// can use any pin
void Epd42::fastSPIwrite(uint8_t d,uint8_t dc) {
PWRITE(cs_pin, LOW);
// transfer dc
PWRITE(sclk_pin, LOW);
if(dc) PWRITE(mosi_pin, HIGH);
else PWRITE(mosi_pin, LOW);
PWRITE(sclk_pin, HIGH);
for(uint8_t bit = 0x80; bit; bit >>= 1) {
PWRITE(sclk_pin, LOW);
if(d & bit) PWRITE(mosi_pin, HIGH);
else PWRITE(mosi_pin, LOW);
PWRITE(sclk_pin, HIGH);
}
PWRITE(cs_pin, HIGH);
}
#endif
/* END OF FILE */