294 lines
9.1 KiB
C
294 lines
9.1 KiB
C
/*****************************************************************************
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* | File : EPD_4in2.c
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* | Author : Waveshare team
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* | Function : Electronic paper driver
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* | Info :
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*----------------
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* | This version: V2.0
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* | Date : 2018-11-08
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* | Info :
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* 1.Remove:ImageBuff[EPD_HEIGHT * EPD_WIDTH / 8]
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* 2.Change:EPD_Display(UBYTE *Image)
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* Need to pass parameters: pointer to cached data
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* 3.Change:
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* EPD_RST -> EPD_RST_PIN
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* EPD_DC -> EPD_DC_PIN
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* EPD_CS -> EPD_CS_PIN
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* EPD_BUSY -> EPD_BUSY_PIN
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#
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# Permission is hereby granted, free of charge, to any person obtaining a copy
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# of this software and associated documnetation files (the "Software"), to deal
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# in the Software without restriction, including without limitation the rights
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# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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# copies of the Software, and to permit persons to whom the Software is
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# furished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be included in
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# all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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# THE SOFTWARE.
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#
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******************************************************************************/
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#include "EPD_4in2.h"
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#include "Debug.h"
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const unsigned char lut_vcom0[] =
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{
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0x00, 0x17, 0x00, 0x00, 0x00, 0x02,
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0x00, 0x17, 0x17, 0x00, 0x00, 0x02,
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0x00, 0x0A, 0x01, 0x00, 0x00, 0x01,
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0x00, 0x0E, 0x0E, 0x00, 0x00, 0x02,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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};
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const unsigned char lut_ww[] ={
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0x40, 0x17, 0x00, 0x00, 0x00, 0x02,
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0x90, 0x17, 0x17, 0x00, 0x00, 0x02,
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0x40, 0x0A, 0x01, 0x00, 0x00, 0x01,
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0xA0, 0x0E, 0x0E, 0x00, 0x00, 0x02,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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};
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const unsigned char lut_bw[] ={
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0x40, 0x17, 0x00, 0x00, 0x00, 0x02,
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0x90, 0x17, 0x17, 0x00, 0x00, 0x02,
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0x40, 0x0A, 0x01, 0x00, 0x00, 0x01,
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0xA0, 0x0E, 0x0E, 0x00, 0x00, 0x02,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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};
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const unsigned char lut_wb[] ={
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0x80, 0x17, 0x00, 0x00, 0x00, 0x02,
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0x90, 0x17, 0x17, 0x00, 0x00, 0x02,
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0x80, 0x0A, 0x01, 0x00, 0x00, 0x01,
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0x50, 0x0E, 0x0E, 0x00, 0x00, 0x02,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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};
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const unsigned char lut_bb[] ={
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0x80, 0x17, 0x00, 0x00, 0x00, 0x02,
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0x90, 0x17, 0x17, 0x00, 0x00, 0x02,
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0x80, 0x0A, 0x01, 0x00, 0x00, 0x01,
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0x50, 0x0E, 0x0E, 0x00, 0x00, 0x02,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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};
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/******************************************************************************
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function : Software reset
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parameter:
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******************************************************************************/
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static void EPD_Reset(void)
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{
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DEV_Digital_Write(EPD_RST_PIN, 1);
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DEV_Delay_ms(200);
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DEV_Digital_Write(EPD_RST_PIN, 0);
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DEV_Delay_ms(200);
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DEV_Digital_Write(EPD_RST_PIN, 1);
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DEV_Delay_ms(200);
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}
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/******************************************************************************
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function : send command
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parameter:
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Reg : Command register
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******************************************************************************/
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static void EPD_SendCommand(UBYTE Reg)
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{
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DEV_Digital_Write(EPD_DC_PIN, 0);
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DEV_Digital_Write(EPD_CS_PIN, 0);
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DEV_SPI_WriteByte(Reg);
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DEV_Digital_Write(EPD_CS_PIN, 1);
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}
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/******************************************************************************
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function : send data
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parameter:
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Data : Write data
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******************************************************************************/
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static void EPD_SendData(UBYTE Data)
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{
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DEV_Digital_Write(EPD_DC_PIN, 1);
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DEV_Digital_Write(EPD_CS_PIN, 0);
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DEV_SPI_WriteByte(Data);
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DEV_Digital_Write(EPD_CS_PIN, 1);
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}
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/******************************************************************************
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function : Wait until the busy_pin goes LOW
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parameter:
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******************************************************************************/
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void EPD_WaitUntilIdle(void)
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{
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Debug("e-Paper busy\r\n");
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while(DEV_Digital_Read(EPD_BUSY_PIN) == 0) { //LOW: idle, HIGH: busy
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DEV_Delay_ms(100);
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}
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Debug("e-Paper busy release\r\n");
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}
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/******************************************************************************
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function : Turn On Display
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parameter:
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******************************************************************************/
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static void EPD_TurnOnDisplay(void)
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{
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EPD_SendCommand(DISPLAY_REFRESH);
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DEV_Delay_ms(100);
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EPD_WaitUntilIdle();
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}
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/******************************************************************************
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function : set the look-up tables
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parameter:
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******************************************************************************/
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static void EPD_SetLut(void)
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{
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UWORD count;
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EPD_SendCommand(LUT_FOR_VCOM); //g vcom
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for(count=0; count<44; count++) {
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EPD_SendData(lut_vcom0[count]);
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}
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EPD_SendCommand(LUT_WHITE_TO_WHITE);
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for(count=0; count<42; count++) {
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EPD_SendData(lut_ww[count]);
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}
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EPD_SendCommand(LUT_BLACK_TO_WHITE);
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for(count=0; count<42; count++) {
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EPD_SendData(lut_bw[count]);
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}
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EPD_SendCommand(LUT_WHITE_TO_BLACK);
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for(count=0; count<42; count++) {
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EPD_SendData(lut_wb[count]);
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}
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EPD_SendCommand(LUT_BLACK_TO_BLACK);
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for(count=0; count<42; count++) {
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EPD_SendData(lut_bb[count]);
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}
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}
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/******************************************************************************
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function : Initialize the e-Paper register
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parameter:
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******************************************************************************/
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UBYTE EPD_Init(void)
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{
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EPD_Reset();
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EPD_SendCommand(POWER_SETTING); //POWER SETTING
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EPD_SendData(0x03);
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EPD_SendData(0x00);
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EPD_SendData(0x2b);
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EPD_SendData(0x2b);
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EPD_SendCommand(BOOSTER_SOFT_START); //boost soft start
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EPD_SendData(0x17); //A
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EPD_SendData(0x17); //B
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EPD_SendData(0x17); //C
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EPD_SendCommand(POWER_ON);
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EPD_WaitUntilIdle();
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EPD_SendCommand(PANEL_SETTING); //panel setting
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EPD_SendData(0xbf); //KW-BF KWR-AF BWROTP 0f BWOTP 1f
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EPD_SendData(0x0d);
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EPD_SendCommand(PLL_CONTROL); //PLL setting
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EPD_SendData(0x3C); // 3A 100HZ 29 150Hz 39 200HZ 31 171HZ
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EPD_SendCommand(0x61); //resolution setting
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EPD_SendData(0x01);
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EPD_SendData(0x90); //128
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EPD_SendData(0x01); //
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EPD_SendData(0x2c);
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EPD_SendCommand(0x82); //vcom_DC setting
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EPD_SendData(0x28);
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EPD_SendCommand(0X50); //VCOM AND DATA INTERVAL SETTING
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EPD_SendData(0x97); //97white border 77black border VBDF 17|D7 VBDW 97 VBDB 57 VBDF F7 VBDW 77 VBDB 37 VBDR B7
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EPD_SetLut();
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return 0;
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}
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/******************************************************************************
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function : Clear screen
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parameter:
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******************************************************************************/
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void EPD_Clear(void)
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{
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UWORD Width, Height;
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Width = (EPD_WIDTH % 8 == 0)? (EPD_WIDTH / 8 ): (EPD_WIDTH / 8 + 1);
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Height = EPD_HEIGHT;
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EPD_SendCommand(DATA_START_TRANSMISSION_1);
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for (UWORD j = 0; j < Height; j++) {
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for (UWORD i = 0; i < Width; i++) {
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EPD_SendData(0xFF);
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}
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}
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EPD_SendCommand(DATA_START_TRANSMISSION_2);
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for (UWORD j = 0; j < Height; j++) {
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for (UWORD i = 0; i < Width; i++) {
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EPD_SendData(0xFF);
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}
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}
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}
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/******************************************************************************
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function : Sends the image buffer in RAM to e-Paper and displays
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parameter:
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******************************************************************************/
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void EPD_Display(UBYTE *Image)
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{
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UWORD Width, Height;
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Width = (EPD_WIDTH % 8 == 0)? (EPD_WIDTH / 8 ): (EPD_WIDTH / 8 + 1);
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Height = EPD_HEIGHT;
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EPD_SendCommand(DATA_START_TRANSMISSION_1);
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for (UWORD j = 0; j < Height; j++) {
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for (UWORD i = 0; i < Width; i++) {
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EPD_SendData(0XFF);
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}
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}
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EPD_SendCommand(DATA_START_TRANSMISSION_2);
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for (UWORD j = 0; j < Height; j++) {
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for (UWORD i = 0; i < Width; i++) {
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EPD_SendData(Image[i + j * Width]);
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}
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}
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EPD_TurnOnDisplay();
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EPD_WaitUntilIdle();
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}
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/******************************************************************************
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function : Enter sleep mode
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parameter:
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******************************************************************************/
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void EPD_Sleep(void)
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{
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EPD_SendCommand(POWER_OFF);
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EPD_WaitUntilIdle();
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EPD_SendCommand(DEEP_SLEEP);
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EPD_SendData(0XA5);
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}
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