mirror of
https://github.com/jam422470459/EPD-nRF52-hema213.git
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290 lines
9.4 KiB
C
290 lines
9.4 KiB
C
/*****************************************************************************
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* | File : EPD_4in2.c
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* | Author : Waveshare team
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* | Function : 4.2inch e-paper
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* | Info :
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*----------------
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* | This version: V3.0
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* | Date : 2019-06-13
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* | Info :
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* -----------------------------------------------------------------------------
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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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static const unsigned char EPD_4IN2_lut_vcom0[] = {
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0x00, 0x08, 0x08, 0x00, 0x00, 0x02,
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0x00, 0x0F, 0x0F, 0x00, 0x00, 0x01,
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0x00, 0x08, 0x08, 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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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00,
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};
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static const unsigned char EPD_4IN2_lut_ww[] = {
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0x50, 0x08, 0x08, 0x00, 0x00, 0x02,
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0x90, 0x0F, 0x0F, 0x00, 0x00, 0x01,
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0xA0, 0x08, 0x08, 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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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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};
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static const unsigned char EPD_4IN2_lut_bw[] = {
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0x50, 0x08, 0x08, 0x00, 0x00, 0x02,
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0x90, 0x0F, 0x0F, 0x00, 0x00, 0x01,
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0xA0, 0x08, 0x08, 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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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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};
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static const unsigned char EPD_4IN2_lut_wb[] = {
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0xA0, 0x08, 0x08, 0x00, 0x00, 0x02,
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0x90, 0x0F, 0x0F, 0x00, 0x00, 0x01,
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0x50, 0x08, 0x08, 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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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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};
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static const unsigned char EPD_4IN2_lut_bb[] = {
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0x20, 0x08, 0x08, 0x00, 0x00, 0x02,
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0x90, 0x0F, 0x0F, 0x00, 0x00, 0x01,
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0x10, 0x08, 0x08, 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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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_4IN2_Reset(void)
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{
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DEV_Digital_Write(EPD_RST_PIN, 1);
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DEV_Delay_ms(10);
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DEV_Digital_Write(EPD_RST_PIN, 0);
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DEV_Delay_ms(10);
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DEV_Digital_Write(EPD_RST_PIN, 1);
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DEV_Delay_ms(10);
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DEV_Digital_Write(EPD_RST_PIN, 0);
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DEV_Delay_ms(10);
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DEV_Digital_Write(EPD_RST_PIN, 1);
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DEV_Delay_ms(10);
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DEV_Digital_Write(EPD_RST_PIN, 0);
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DEV_Delay_ms(10);
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DEV_Digital_Write(EPD_RST_PIN, 1);
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DEV_Delay_ms(10);
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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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void EPD_4IN2_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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void EPD_4IN2_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_4IN2_ReadBusy(void)
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{
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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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}
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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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void EPD_4IN2_TurnOnDisplay(void)
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{
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EPD_4IN2_SendCommand(0x12);
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DEV_Delay_ms(100);
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EPD_4IN2_ReadBusy();
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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_4IN2_SetLut(void)
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{
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unsigned int count;
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EPD_4IN2_SendCommand(0x20);
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for(count=0;count<36;count++)
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{EPD_4IN2_SendData(EPD_4IN2_lut_vcom0[count]);}
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EPD_4IN2_SendCommand(0x21);
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for(count=0;count<36;count++)
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{EPD_4IN2_SendData(EPD_4IN2_lut_ww[count]);}
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EPD_4IN2_SendCommand(0x22);
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for(count=0;count<36;count++)
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{EPD_4IN2_SendData(EPD_4IN2_lut_bw[count]);}
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EPD_4IN2_SendCommand(0x23);
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for(count=0;count<36;count++)
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{EPD_4IN2_SendData(EPD_4IN2_lut_wb[count]);}
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EPD_4IN2_SendCommand(0x24);
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for(count=0;count<36;count++)
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{EPD_4IN2_SendData(EPD_4IN2_lut_bb[count]);}
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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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void EPD_4IN2_Init(void)
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{
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EPD_4IN2_Reset();
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EPD_4IN2_SendCommand(0x01); // POWER SETTING
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EPD_4IN2_SendData (0x03); // VDS_EN, VDG_EN internal
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EPD_4IN2_SendData (0x00); // VCOM_HV, VGHL_LV=16V
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EPD_4IN2_SendData (0x2b); // VDH=11V
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EPD_4IN2_SendData (0x2b); // VDL=11V
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EPD_4IN2_SendCommand(0x06); // boost soft start
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EPD_4IN2_SendData (0x17); // A
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EPD_4IN2_SendData (0x17); // B
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EPD_4IN2_SendData (0x17); // C
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EPD_4IN2_SendCommand(0x04); // POWER ON
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EPD_4IN2_ReadBusy();
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EPD_4IN2_SendCommand(0x00); // panel setting
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EPD_4IN2_SendData(0x3f); // 300x400 B/W mode, LUT set by register
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EPD_4IN2_SendCommand(0x30); // PLL setting (clock frequency)
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EPD_4IN2_SendData (0x3c); // 3c=50HZ 3a=100HZ 29=150Hz 39=200HZ 31=171HZ
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EPD_4IN2_SendCommand(0x61); // resolution setting
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EPD_4IN2_SendData (EPD_4IN2_WIDTH / 256);
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EPD_4IN2_SendData (EPD_4IN2_WIDTH % 256);
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EPD_4IN2_SendData (EPD_4IN2_HEIGHT / 256);
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EPD_4IN2_SendData (EPD_4IN2_HEIGHT % 256);
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EPD_4IN2_SendCommand(0x82); // vcom_DC setting
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EPD_4IN2_SendData (0x12); // -0.1 + 18 * -0.05 = -1.0V
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EPD_4IN2_SendCommand(0x50); // VCOM AND DATA INTERVAL SETTING
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EPD_4IN2_SendData(0x97); // LUTB=0 LUTW=1 interval=10
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EPD_4IN2_SetLut();
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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_4IN2_Clear(void)
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{
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UWORD Width, Height;
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Width = (EPD_4IN2_WIDTH % 8 == 0)? (EPD_4IN2_WIDTH / 8 ): (EPD_4IN2_WIDTH / 8 + 1);
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Height = EPD_4IN2_HEIGHT;
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EPD_4IN2_SendCommand(0x10);
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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_4IN2_SendData(0xFF);
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}
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}
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EPD_4IN2_SendCommand(0x13);
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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_4IN2_SendData(0xFF);
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}
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}
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EPD_4IN2_TurnOnDisplay();
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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_4IN2_Display(UBYTE *Image)
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{
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UWORD Width, Height;
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Width = (EPD_4IN2_WIDTH % 8 == 0)? (EPD_4IN2_WIDTH / 8 ): (EPD_4IN2_WIDTH / 8 + 1);
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Height = EPD_4IN2_HEIGHT;
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EPD_4IN2_SendCommand(0x10);
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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_4IN2_SendData(0x00);
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}
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}
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EPD_4IN2_SendCommand(0x13);
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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_4IN2_SendData(Image[i + j * Width]);
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}
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}
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EPD_4IN2_TurnOnDisplay();
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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_4IN2_Sleep(void)
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{
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EPD_4IN2_SendCommand(0x50); // DEEP_SLEEP
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EPD_4IN2_SendData(0XF7);
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EPD_4IN2_SendCommand(0x02); // POWER_OFF
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EPD_4IN2_ReadBusy();
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EPD_4IN2_SendCommand(0x07); // DEEP_SLEEP
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EPD_4IN2_SendData(0XA5);
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}
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