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235 lines
7.3 KiB
C
235 lines
7.3 KiB
C
/*****************************************************************************
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* | File : EPD_4in37g.h
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* | Author : Waveshare team
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* | Function : 4.37inch e-Paper (G)
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* | Info :
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*----------------
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* | This version: V1.0
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* | Date : 2022-08-15
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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_4in37g.h"
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#ifdef EPD_4IN37G
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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_4IN37G_Reset(void)
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{
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EPD_Digital_Write(EPD_RST_PIN, 1);
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EPD_Delay_ms(20);
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EPD_Digital_Write(EPD_RST_PIN, 0);
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EPD_Delay_ms(2);
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EPD_Digital_Write(EPD_RST_PIN, 1);
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EPD_Delay_ms(20);
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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_4IN37G_SendCommand(UBYTE Reg)
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{
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EPD_Digital_Write(EPD_DC_PIN, 0);
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EPD_Digital_Write(EPD_CS_PIN, 0);
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EPD_SPI_WriteByte(Reg);
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EPD_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_4IN37G_SendData(UBYTE Data)
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{
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EPD_Digital_Write(EPD_DC_PIN, 1);
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EPD_Digital_Write(EPD_CS_PIN, 0);
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EPD_SPI_WriteByte(Data);
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EPD_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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static void EPD_4IN37G_ReadBusyH(void)
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{
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EPD_Printf("e-Paper busy H\r\n");
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while(!EPD_Digital_Read(EPD_BUSY_PIN)) { //LOW: busy, HIGH: idle
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EPD_Delay_ms(5);
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}
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EPD_Printf("e-Paper busy H 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_4IN37G_TurnOnDisplay(void)
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{
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EPD_4IN37G_SendCommand(0x12); // DISPLAY_REFRESH
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EPD_4IN37G_SendData(0x00);
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EPD_4IN37G_ReadBusyH();
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EPD_4IN37G_SendCommand(0x02); // POWER_OFF
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EPD_4IN37G_SendData(0X00);
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EPD_4IN37G_ReadBusyH();
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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_4IN37G_Init(void)
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{
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EPD_4IN37G_Reset();
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EPD_4IN37G_SendCommand(0xAA);
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EPD_4IN37G_SendData(0x49);
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EPD_4IN37G_SendData(0x55);
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EPD_4IN37G_SendData(0x20);
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EPD_4IN37G_SendData(0x08);
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EPD_4IN37G_SendData(0x09);
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EPD_4IN37G_SendData(0x18);
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EPD_4IN37G_SendCommand(0x01);
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EPD_4IN37G_SendData(0x3F);
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EPD_4IN37G_SendCommand(0x00);
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EPD_4IN37G_SendData(0x4F);
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EPD_4IN37G_SendData(0x69);
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EPD_4IN37G_SendCommand(0x05);
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EPD_4IN37G_SendData(0x40);
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EPD_4IN37G_SendData(0x1F);
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EPD_4IN37G_SendData(0x1F);
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EPD_4IN37G_SendData(0x2C);
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EPD_4IN37G_SendCommand(0x08);
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EPD_4IN37G_SendData(0x6F);
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EPD_4IN37G_SendData(0x1F);
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EPD_4IN37G_SendData(0x1F);
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EPD_4IN37G_SendData(0x22);
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//===================
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//20211212
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//First setting
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EPD_4IN37G_SendCommand(0x06);
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EPD_4IN37G_SendData(0x6F);
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EPD_4IN37G_SendData(0x1F);
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EPD_4IN37G_SendData(0x17);
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EPD_4IN37G_SendData(0x17);
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//===================
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EPD_4IN37G_SendCommand(0x03);
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EPD_4IN37G_SendData(0x00);
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EPD_4IN37G_SendData(0x54);
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EPD_4IN37G_SendData(0x00);
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EPD_4IN37G_SendData(0x44);
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EPD_4IN37G_SendCommand(0x50);
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EPD_4IN37G_SendData(0x3F);
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EPD_4IN37G_SendCommand(0x60);
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EPD_4IN37G_SendData(0x02);
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EPD_4IN37G_SendData(0x00);
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//Please notice that PLL must be set for version 2 IC
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EPD_4IN37G_SendCommand(0x30);
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EPD_4IN37G_SendData(0x08);
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EPD_4IN37G_SendCommand(0x61);
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EPD_4IN37G_SendData(0x02);
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EPD_4IN37G_SendData(0x00);
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EPD_4IN37G_SendData(0x01);
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EPD_4IN37G_SendData(0x70);
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EPD_4IN37G_SendCommand(0xE3);
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EPD_4IN37G_SendData(0x2F);
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EPD_4IN37G_SendCommand(0x84);
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EPD_4IN37G_SendData(0x01);
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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_4IN37G_Clear(UBYTE color)
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{
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UWORD Width, Height;
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Width = (EPD_4IN37G_WIDTH % 4 == 0)? (EPD_4IN37G_WIDTH / 4 ): (EPD_4IN37G_WIDTH / 4 + 1);
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Height = EPD_4IN37G_HEIGHT;
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EPD_4IN37G_SendCommand(0x04);
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EPD_4IN37G_ReadBusyH();
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EPD_4IN37G_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_4IN37G_SendData((color << 6) | (color << 4) | (color << 2) | color);
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}
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}
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EPD_4IN37G_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_4IN37G_Display(UBYTE *Image)
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{
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UWORD Width, Height;
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Width = (EPD_4IN37G_WIDTH % 4 == 0)? (EPD_4IN37G_WIDTH / 4 ): (EPD_4IN37G_WIDTH / 4 + 1);
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Height = EPD_4IN37G_HEIGHT;
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EPD_4IN37G_SendCommand(0x04);
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EPD_4IN37G_ReadBusyH();
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EPD_4IN37G_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_4IN37G_SendData(Image[i + j * Width]);
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}
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}
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EPD_4IN37G_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_4IN37G_Sleep(void)
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{
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EPD_4IN37G_SendCommand(0x02); // POWER_OFF
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EPD_4IN37G_SendData(0X00);
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EPD_4IN37G_SendCommand(0x07); // DEEP_SLEEP
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EPD_4IN37G_SendData(0XA5);
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}
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#endif
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