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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_2in66b.c Normal file
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/*****************************************************************************
* | File : EPD_2in66b.c
* | Author : Waveshare team
* | Function : 2.66inch e-paper b
* | Info :
*----------------
* | This version: V1.0
* | Date : 2020-11-13
* | 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_2in66b.h"
#include "Debug.h"
/******************************************************************************
function : Software reset
parameter:
******************************************************************************/
static void EPD_2IN66B_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_2IN66B_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_2IN66B_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_2IN66B_ReadBusy(void)
{
Debug("e-Paper busy\r\n");
DEV_Delay_ms(50);
while(DEV_Digital_Read(EPD_BUSY_PIN) == 1) { //LOW: idle, HIGH: busy
DEV_Delay_ms(10);
}
DEV_Delay_ms(50);
Debug("e-Paper busy release\r\n");
}
/******************************************************************************
function : Turn On Display
parameter:
******************************************************************************/
static void EPD_2IN66B_TurnOnDisplay(void)
{
EPD_2IN66B_SendCommand(0x20);
EPD_2IN66B_ReadBusy();
}
/******************************************************************************
function : Setting the display window
parameter:
******************************************************************************/
static void EPD_2IN66B_SetWindows(UWORD Xstart, UWORD Ystart, UWORD Xend, UWORD Yend)
{
EPD_2IN66B_SendCommand(0x44); // SET_RAM_X_ADDRESS_START_END_POSITION
EPD_2IN66B_SendData((Xstart>>3) & 0x1F);
EPD_2IN66B_SendData((Xend>>3) & 0x1F);
EPD_2IN66B_SendCommand(0x45); // SET_RAM_Y_ADDRESS_START_END_POSITION
EPD_2IN66B_SendData(Ystart & 0xFF);
EPD_2IN66B_SendData((Ystart >> 8) & 0x01);
EPD_2IN66B_SendData(Yend & 0xFF);
EPD_2IN66B_SendData((Yend >> 8) & 0x01);
}
/******************************************************************************
function : Set Cursor
parameter:
******************************************************************************/
static void EPD_2IN66B_SetCursor(UWORD Xstart, UWORD Ystart)
{
EPD_2IN66B_SendCommand(0x4E); // SET_RAM_X_ADDRESS_COUNTER
EPD_2IN66B_SendData(Xstart & 0x1F);
EPD_2IN66B_SendCommand(0x4F); // SET_RAM_Y_ADDRESS_COUNTER
EPD_2IN66B_SendData(Ystart & 0xFF);
EPD_2IN66B_SendData((Ystart >> 8) & 0x01);
}
/******************************************************************************
function : Initialize the e-Paper register
parameter:
******************************************************************************/
void EPD_2IN66B_Init(void)
{
EPD_2IN66B_Reset();
EPD_2IN66B_ReadBusy();
EPD_2IN66B_SendCommand(0x12);//soft reset
EPD_2IN66B_ReadBusy();
EPD_2IN66B_SendCommand(0x11); //data entry mode
EPD_2IN66B_SendData(0x03);
EPD_2IN66B_SetWindows(0, 0, EPD_2IN66B_WIDTH-1, EPD_2IN66B_HEIGHT-1);
EPD_2IN66B_SendCommand(0x21); // Display update control
EPD_2IN66B_SendData(0x00);
EPD_2IN66B_SendData(0x80);
EPD_2IN66B_SetCursor(0, 0);
EPD_2IN66B_ReadBusy();
}
/******************************************************************************
function : Sends the image buffer in RAM to e-Paper and displays
parameter:
******************************************************************************/
void EPD_2IN66B_Display(UBYTE *ImageBlack, UBYTE*ImageRed)
{
UWORD Width, Height;
Width = (EPD_2IN66B_WIDTH % 8 == 0)? (EPD_2IN66B_WIDTH / 8 ): (EPD_2IN66B_WIDTH / 8 + 1);
Height = EPD_2IN66B_HEIGHT;
EPD_2IN66B_SendCommand(0x24);
for (UWORD j = 0; j < Height; j++) {
for (UWORD i = 0; i < Width; i++) {
EPD_2IN66B_SendData(ImageBlack[i + j * Width]);
}
}
EPD_2IN66B_SendCommand(0x26);
for (UWORD j = 0; j < Height; j++) {
for (UWORD i = 0; i < Width; i++) {
EPD_2IN66B_SendData(~ImageRed[i + j * Width]);
}
}
EPD_2IN66B_TurnOnDisplay();
}
/******************************************************************************
function : Clear screen
parameter:
******************************************************************************/
void EPD_2IN66B_Clear(void)
{
UWORD Width, Height;
Width = (EPD_2IN66B_WIDTH % 8 == 0)? (EPD_2IN66B_WIDTH / 8 ): (EPD_2IN66B_WIDTH / 8 + 1);
Height = EPD_2IN66B_HEIGHT;
EPD_2IN66B_SendCommand(0x24);
for (UWORD j = 0; j < Height; j++) {
for (UWORD i = 0; i < Width; i++) {
EPD_2IN66B_SendData(0xff);
}
}
EPD_2IN66B_SendCommand(0x26);
for (UWORD j = 0; j < Height; j++) {
for (UWORD i = 0; i < Width; i++) {
EPD_2IN66B_SendData(0x00);
}
}
EPD_2IN66B_TurnOnDisplay();
}
/******************************************************************************
function : Enter sleep mode
parameter:
******************************************************************************/
void EPD_2IN66B_Sleep(void)
{
EPD_2IN66B_SendCommand(0x10);
EPD_2IN66B_SendData(0x01);
}