mirror of https://github.com/arendst/Tasmota.git
572 lines
15 KiB
C++
572 lines
15 KiB
C++
/**
|
|
* @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);
|
|
}
|
|
|
|
void Epd42::Begin(int16_t cs,int16_t mosi,int16_t sclk) {
|
|
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();
|
|
SendCommand(EPD_42_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(0xff); // VDHR
|
|
SendCommand(EPD_42_BOOSTER_SOFT_START);
|
|
SendData(0x17);
|
|
SendData(0x17);
|
|
SendData(0x17); //07 0f 17 1f 27 2F 37 2f
|
|
SendCommand(EPD_42_POWER_ON);
|
|
WaitUntilIdle();
|
|
SendCommand(EPD_42_PANEL_SETTING);
|
|
// SendData(0xbf); // KW-BF KWR-AF BWROTP 0f
|
|
// SendData(0x0b);
|
|
// 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
|
|
|
|
SendCommand(EPD_42_PLL_CONTROL);
|
|
SendData(0x3C); // 3A 100Hz 29 150Hz 39 200Hz 31 171Hz 3C 50Hz (default) 0B 10Hz
|
|
//SendData(0x0B); //0B is 10Hz
|
|
/* 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) {
|
|
SendCommand(EPD_42_PARTIAL_IN);
|
|
SendCommand(EPD_42_PARTIAL_WINDOW);
|
|
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);
|
|
SendCommand((dtm == 1) ? EPD_42_DATA_START_TRANSMISSION_1 : EPD_42_DATA_START_TRANSMISSION_2);
|
|
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);
|
|
SendCommand(EPD_42_PARTIAL_OUT);
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* @brief: set the look-up table
|
|
*/
|
|
void Epd42::SetLut(void) {
|
|
unsigned int count;
|
|
SendCommand(EPD_42_LUT_FOR_VCOM); //vcom
|
|
for(count = 0; count < 44; count++) {
|
|
SendData(pgm_read_byte(&lut_vcom0[count]));
|
|
}
|
|
|
|
SendCommand(EPD_42_LUT_WHITE_TO_WHITE); //ww --
|
|
for(count = 0; count < 42; count++) {
|
|
SendData(pgm_read_byte(&lut_ww[count]));
|
|
}
|
|
|
|
SendCommand(EPD_42_LUT_BLACK_TO_WHITE); //bw r
|
|
for(count = 0; count < 42; count++) {
|
|
SendData(pgm_read_byte(&lut_bw[count]));
|
|
}
|
|
|
|
SendCommand(EPD_42_LUT_WHITE_TO_BLACK); //wb w
|
|
for(count = 0; count < 42; count++) {
|
|
SendData(pgm_read_byte(&lut_wb[count]));
|
|
}
|
|
|
|
SendCommand(EPD_42_LUT_BLACK_TO_BLACK); //bb b
|
|
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;
|
|
SendCommand(EPD_42_LUT_FOR_VCOM); //vcom
|
|
for(count = 0; count < 44; count++) {
|
|
SendData(pgm_read_byte(&lut_vcom0_quick[count]));
|
|
}
|
|
|
|
SendCommand(EPD_42_LUT_WHITE_TO_WHITE); //ww --
|
|
for(count = 0; count < 42; count++) {
|
|
SendData(pgm_read_byte(&lut_ww_quick[count]));
|
|
}
|
|
|
|
SendCommand(EPD_42_LUT_BLACK_TO_WHITE); //bw r
|
|
for(count = 0; count < 42; count++) {
|
|
SendData(pgm_read_byte(&lut_bw_quick[count]));
|
|
}
|
|
|
|
SendCommand(EPD_42_LUT_WHITE_TO_BLACK); //wb w
|
|
for(count = 0; count < 42; count++) {
|
|
SendData(pgm_read_byte(&lut_wb_quick[count]));
|
|
}
|
|
|
|
SendCommand(EPD_42_LUT_BLACK_TO_BLACK); //bb b
|
|
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) {
|
|
SendCommand(EPD_42_RESOLUTION_SETTING);
|
|
SendData(width >> 8);
|
|
SendData(width & 0xff);
|
|
SendData(height >> 8);
|
|
SendData(height & 0xff);
|
|
|
|
SendCommand(EPD_42_VCM_DC_SETTING);
|
|
SendData(0x12);
|
|
|
|
SendCommand(EPD_42_VCOM_AND_DATA_INTERVAL_SETTING);
|
|
SendCommand(0x97); //VBDF 17|D7 VBDW 97 VBDB 57 VBDF F7 VBDW 77 VBDB 37 VBDR B7
|
|
|
|
if (frame_buffer != NULL) {
|
|
SendCommand(EPD_42_DATA_START_TRANSMISSION_1);
|
|
for(int i = 0; i < width / 8 * height; i++) {
|
|
SendData(0xFF); // bit set: white, bit reset: black
|
|
}
|
|
delay(2);
|
|
SendCommand(EPD_42_DATA_START_TRANSMISSION_2);
|
|
for(int i = 0; i < width / 8 * height; i++) {
|
|
SendData(pgm_read_byte(&frame_buffer[i]));
|
|
}
|
|
delay(2);
|
|
}
|
|
|
|
SetLut();
|
|
|
|
SendCommand(EPD_42_DISPLAY_REFRESH);
|
|
delay(100);
|
|
WaitUntilIdle();
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
* @brief: clear the frame data from the SRAM, this won't refresh the display
|
|
*/
|
|
void Epd42::ClearFrame(void) {
|
|
SendCommand(EPD_42_RESOLUTION_SETTING);
|
|
SendData(width >> 8);
|
|
SendData(width & 0xff);
|
|
SendData(height >> 8);
|
|
SendData(height & 0xff);
|
|
|
|
SendCommand(EPD_42_DATA_START_TRANSMISSION_1);
|
|
delay(2);
|
|
for(int i = 0; i < width / 8 * height; i++) {
|
|
SendData(0xFF);
|
|
}
|
|
delay(2);
|
|
SendCommand(EPD_42_DATA_START_TRANSMISSION_2);
|
|
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();
|
|
SendCommand(EPD_42_DISPLAY_REFRESH);
|
|
delay(100);
|
|
WaitUntilIdle();
|
|
}
|
|
|
|
void Epd42::DisplayFrameQuick(void) {
|
|
SetLutQuick();
|
|
SendCommand(EPD_42_DISPLAY_REFRESH);
|
|
// 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() {
|
|
SendCommand(EPD_42_VCOM_AND_DATA_INTERVAL_SETTING);
|
|
SendData(0x17); //border floating
|
|
SendCommand(EPD_42_VCM_DC_SETTING); //VCOM to 0V
|
|
SendCommand(EPD_42_PANEL_SETTING);
|
|
delay(100);
|
|
|
|
SendCommand(EPD_42_POWER_SETTING); //VG&VS to 0V fast
|
|
SendData(0x00);
|
|
SendData(0x00);
|
|
SendData(0x00);
|
|
SendData(0x00);
|
|
SendData(0x00);
|
|
delay(100);
|
|
|
|
SendCommand(EPD_42_POWER_OFF); //power off
|
|
WaitUntilIdle();
|
|
SendCommand(EPD_42_DEEP_SLEEP); //deep sleep
|
|
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
|
|
#define PWRITE ydigitalWrite
|
|
#endif
|
|
|
|
#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
|
|
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
|
|
// 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 */
|