319 lines
9.8 KiB
C
319 lines
9.8 KiB
C
/*****************************************************************************
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* | File : EPD_2in7b.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 : 2018-11-06
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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_2in7b.h"
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#include "Debug.h"
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const unsigned char lut_vcom_dc[] = {
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0x00, 0x00,
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0x00, 0x1A, 0x1A, 0x00, 0x00, 0x01,
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0x00, 0x0A, 0x0A, 0x00, 0x00, 0x08,
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0x00, 0x0E, 0x01, 0x0E, 0x01, 0x10,
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0x00, 0x0A, 0x0A, 0x00, 0x00, 0x08,
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0x00, 0x04, 0x10, 0x00, 0x00, 0x05,
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0x00, 0x03, 0x0E, 0x00, 0x00, 0x0A,
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0x00, 0x23, 0x00, 0x00, 0x00, 0x01
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};
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//R21H
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const unsigned char lut_ww[] = {
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0x90, 0x1A, 0x1A, 0x00, 0x00, 0x01,
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0x40, 0x0A, 0x0A, 0x00, 0x00, 0x08,
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0x84, 0x0E, 0x01, 0x0E, 0x01, 0x10,
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0x80, 0x0A, 0x0A, 0x00, 0x00, 0x08,
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0x00, 0x04, 0x10, 0x00, 0x00, 0x05,
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0x00, 0x03, 0x0E, 0x00, 0x00, 0x0A,
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0x00, 0x23, 0x00, 0x00, 0x00, 0x01
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};
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//R22H r
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const unsigned char lut_bw[] = {
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0xA0, 0x1A, 0x1A, 0x00, 0x00, 0x01,
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0x00, 0x0A, 0x0A, 0x00, 0x00, 0x08,
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0x84, 0x0E, 0x01, 0x0E, 0x01, 0x10,
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0x90, 0x0A, 0x0A, 0x00, 0x00, 0x08,
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0xB0, 0x04, 0x10, 0x00, 0x00, 0x05,
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0xB0, 0x03, 0x0E, 0x00, 0x00, 0x0A,
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0xC0, 0x23, 0x00, 0x00, 0x00, 0x01
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};
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//R23H w
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const unsigned char lut_bb[] = {
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0x90, 0x1A, 0x1A, 0x00, 0x00, 0x01,
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0x40, 0x0A, 0x0A, 0x00, 0x00, 0x08,
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0x84, 0x0E, 0x01, 0x0E, 0x01, 0x10,
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0x80, 0x0A, 0x0A, 0x00, 0x00, 0x08,
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0x00, 0x04, 0x10, 0x00, 0x00, 0x05,
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0x00, 0x03, 0x0E, 0x00, 0x00, 0x0A,
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0x00, 0x23, 0x00, 0x00, 0x00, 0x01
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};
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//R24H b
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const unsigned char lut_wb[] = {
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0x90, 0x1A, 0x1A, 0x00, 0x00, 0x01,
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0x20, 0x0A, 0x0A, 0x00, 0x00, 0x08,
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0x84, 0x0E, 0x01, 0x0E, 0x01, 0x10,
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0x10, 0x0A, 0x0A, 0x00, 0x00, 0x08,
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0x00, 0x04, 0x10, 0x00, 0x00, 0x05,
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0x00, 0x03, 0x0E, 0x00, 0x00, 0x0A,
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0x00, 0x23, 0x00, 0x00, 0x00, 0x01
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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) { //0: busy, 1: idle
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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 : 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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unsigned int count;
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EPD_SendCommand(LUT_FOR_VCOM); //vcom
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for(count = 0; count < 44; count++) {
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EPD_SendData(lut_vcom_dc[count]);
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}
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EPD_SendCommand(LUT_WHITE_TO_WHITE); //ww --
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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); //bw r
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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); //wb w
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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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EPD_SendCommand(LUT_BLACK_TO_BLACK); //bb b
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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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}
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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_ON);
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EPD_WaitUntilIdle();
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EPD_SendCommand(PANEL_SETTING);
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EPD_SendData(0xaf); //KW-BF KWR-AF BWROTP 0f
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EPD_SendCommand(PLL_CONTROL);
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EPD_SendData(0x3a); //3A 100HZ 29 150Hz 39 200HZ 31 171HZ
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EPD_SendCommand(POWER_SETTING);
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EPD_SendData(0x03); // VDS_EN, VDG_EN
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EPD_SendData(0x00); // VCOM_HV, VGHL_LV[1], VGHL_LV[0]
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EPD_SendData(0x2b); // VDH
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EPD_SendData(0x2b); // VDL
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EPD_SendData(0x09); // VDHR
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EPD_SendCommand(BOOSTER_SOFT_START);
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EPD_SendData(0x07);
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EPD_SendData(0x07);
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EPD_SendData(0x17);
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// Power optimization
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EPD_SendCommand(0xF8);
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EPD_SendData(0x60);
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EPD_SendData(0xA5);
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// Power optimization
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EPD_SendCommand(0xF8);
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EPD_SendData(0x89);
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EPD_SendData(0xA5);
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// Power optimization
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EPD_SendCommand(0xF8);
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EPD_SendData(0x90);
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EPD_SendData(0x00);
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// Power optimization
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EPD_SendCommand(0xF8);
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EPD_SendData(0x93);
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EPD_SendData(0x2A);
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// Power optimization
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EPD_SendCommand(0xF8);
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EPD_SendData(0x73);
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EPD_SendData(0x41);
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EPD_SendCommand(VCM_DC_SETTING_REGISTER);
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EPD_SendData(0x12);
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EPD_SendCommand(VCOM_AND_DATA_INTERVAL_SETTING);
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EPD_SendData(0x87); // define by OTP
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EPD_SetLut();
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EPD_SendCommand(PARTIAL_DISPLAY_REFRESH);
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EPD_SendData(0x00);
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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(0X00);
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}
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}
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EPD_SendData(DATA_STOP);
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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(0X00);
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}
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}
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EPD_SendData(DATA_STOP);
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EPD_SendCommand(DISPLAY_REFRESH);
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EPD_WaitUntilIdle();
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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 *Imageblack, UBYTE *Imagered)
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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(~Imageblack[i + j * Width]);
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}
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}
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EPD_SendData(DATA_STOP);
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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(~Imagered[i + j * Width]);
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}
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}
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EPD_SendData(DATA_STOP);
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EPD_SendCommand(DISPLAY_REFRESH);
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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(0X50);
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EPD_SendData(0xf7);
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EPD_SendCommand(0X02); //power off
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EPD_SendCommand(0X07); //deep sleep
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EPD_SendData(0xA5);
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}
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