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2020-12-10

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hnwangkg-ezio 2020-12-11 14:36:30 +08:00
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RaspberryPi_JetsonNano/c/lib/e-Paper/EPD_2in7b_V2.c Normal file
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/*****************************************************************************
* | File : EPD_2in7b_V2.c
* | Author : Waveshare team
* | Function : 2.7inch e-paper b V2
* | Info :
*----------------
* | This version: V1.0
* | Date : 2020-10-20
* | Info :
* -----------------------------------------------------------------------------
#
# 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 "EPD_2in7b_V2.h"
#include "Debug.h"
/******************************************************************************
function : Software reset
parameter:
******************************************************************************/
static void EPD_2IN7B_V2_Reset(void)
{
DEV_Digital_Write(EPD_RST_PIN, 1);
DEV_Delay_ms(200);
DEV_Digital_Write(EPD_RST_PIN, 0);
DEV_Delay_ms(2);
DEV_Digital_Write(EPD_RST_PIN, 1);
DEV_Delay_ms(200);
}
/******************************************************************************
function : send command
parameter:
Reg : Command register
******************************************************************************/
static void EPD_2IN7B_V2_SendCommand(UBYTE Reg)
{
DEV_Digital_Write(EPD_DC_PIN, 0);
DEV_Digital_Write(EPD_CS_PIN, 0);
DEV_SPI_WriteByte(Reg);
DEV_Digital_Write(EPD_CS_PIN, 1);
}
/******************************************************************************
function : send data
parameter:
Data : Write data
******************************************************************************/
static void EPD_2IN7B_V2_SendData(UBYTE Data)
{
DEV_Digital_Write(EPD_DC_PIN, 1);
DEV_Digital_Write(EPD_CS_PIN, 0);
DEV_SPI_WriteByte(Data);
DEV_Digital_Write(EPD_CS_PIN, 1);
}
/******************************************************************************
function : Wait until the busy_pin goes LOW
parameter:
******************************************************************************/
static void EPD_2IN7B_V2_ReadBusy(void)
{
Debug("e-Paper busy\r\n");
while(DEV_Digital_Read(EPD_BUSY_PIN) == 0) { //0: busy, 1: idle
DEV_Delay_ms(100);
}
Debug("e-Paper busy release\r\n");
}
/******************************************************************************
function : Initialize the e-Paper register
parameter:
******************************************************************************/
void EPD_2IN7B_V2_Init(void)
{
EPD_2IN7B_V2_Reset();
EPD_2IN7B_V2_ReadBusy();
EPD_2IN7B_V2_SendCommand(0x4D);
EPD_2IN7B_V2_SendData(0xAA);
EPD_2IN7B_V2_SendCommand(0x87);
EPD_2IN7B_V2_SendData(0x28);
EPD_2IN7B_V2_SendCommand(0x84);
EPD_2IN7B_V2_SendData(0x00);
EPD_2IN7B_V2_SendCommand(0x83);
EPD_2IN7B_V2_SendData(0x05);
EPD_2IN7B_V2_SendCommand(0xA8);
EPD_2IN7B_V2_SendData(0xDF);
EPD_2IN7B_V2_SendCommand(0xA9);
EPD_2IN7B_V2_SendData(0x05);
EPD_2IN7B_V2_SendCommand(0xB1);
EPD_2IN7B_V2_SendData(0xE8);
EPD_2IN7B_V2_SendCommand(0xAB);
EPD_2IN7B_V2_SendData(0xA1);
EPD_2IN7B_V2_SendCommand(0xB9);
EPD_2IN7B_V2_SendData(0x10);
EPD_2IN7B_V2_SendCommand(0x88);
EPD_2IN7B_V2_SendData(0x80);
EPD_2IN7B_V2_SendCommand(0x90);
EPD_2IN7B_V2_SendData(0x02);
EPD_2IN7B_V2_SendCommand(0x86);
EPD_2IN7B_V2_SendData(0x15);
EPD_2IN7B_V2_SendCommand(0x91);
EPD_2IN7B_V2_SendData(0x8D);
EPD_2IN7B_V2_SendCommand(0x50);
EPD_2IN7B_V2_SendData(0x57);
EPD_2IN7B_V2_SendCommand(0xAA);
EPD_2IN7B_V2_SendData(0x0F);
EPD_2IN7B_V2_SendCommand(0x00);
EPD_2IN7B_V2_SendData(0x8f);
}
/******************************************************************************
function : Clear screen
parameter:
******************************************************************************/
void EPD_2IN7B_V2_Clear(void)
{
UWORD Width, Height;
Width = (EPD_2IN7B_V2_WIDTH % 8 == 0)? (EPD_2IN7B_V2_WIDTH / 8 ): (EPD_2IN7B_V2_WIDTH / 8 + 1);
Height = EPD_2IN7B_V2_HEIGHT;
EPD_2IN7B_V2_SendCommand(0x10);
for (UWORD j = 0; j < Height; j++) {
for (UWORD i = 0; i < Width; i++) {
EPD_2IN7B_V2_SendData(0Xff);
}
}
EPD_2IN7B_V2_SendCommand(0x13);
for (UWORD j = 0; j < Height; j++) {
for (UWORD i = 0; i < Width; i++) {
EPD_2IN7B_V2_SendData(0X00);
}
}
EPD_2IN7B_V2_SendCommand(0x04); // Power ON
EPD_2IN7B_V2_ReadBusy();
DEV_Delay_ms(10);
EPD_2IN7B_V2_SendCommand(0x12); // Display Refresh
EPD_2IN7B_V2_ReadBusy();
DEV_Delay_ms(10);
EPD_2IN7B_V2_SendCommand(0x02); // Power OFF
EPD_2IN7B_V2_ReadBusy();
DEV_Delay_ms(20);
}
/******************************************************************************
function : Sends the image buffer in RAM to e-Paper and displays
parameter:
******************************************************************************/
void EPD_2IN7B_V2_Display(UBYTE *Imageblack, UBYTE *Imagered)
{
UWORD Width, Height;
Width = (EPD_2IN7B_V2_WIDTH % 8 == 0)? (EPD_2IN7B_V2_WIDTH / 8 ): (EPD_2IN7B_V2_WIDTH / 8 + 1);
Height = EPD_2IN7B_V2_HEIGHT;
EPD_2IN7B_V2_SendCommand(0x10);
for (UWORD j = 0; j < Height; j++) {
for (UWORD i = 0; i < Width; i++) {
EPD_2IN7B_V2_SendData(Imageblack[i + j * Width]);
}
}
EPD_2IN7B_V2_SendCommand(0x13);
for (UWORD j = 0; j < Height; j++) {
for (UWORD i = 0; i < Width; i++) {
EPD_2IN7B_V2_SendData(~Imagered[i + j * Width]);
}
}
EPD_2IN7B_V2_SendCommand(0x04); // Power ON
EPD_2IN7B_V2_ReadBusy();
DEV_Delay_ms(10);
EPD_2IN7B_V2_SendCommand(0x12); // Display Refresh
EPD_2IN7B_V2_ReadBusy();
DEV_Delay_ms(10);
EPD_2IN7B_V2_SendCommand(0x02); // Power OFF
EPD_2IN7B_V2_ReadBusy();
DEV_Delay_ms(20);
}
/******************************************************************************
function : Enter sleep mode
parameter:
******************************************************************************/
void EPD_2IN7B_V2_Sleep(void)
{
EPD_2IN7B_V2_SendCommand(0x07); // Deep sleep
EPD_2IN7B_V2_SendData(0xA5);
}