/*****************************************************************************
* | File : EPD_1in54.c
* | Author : Waveshare team
* | Function : Electronic paper driver
* | Info :
*----------------
* | This version: V2.0
* | Date : 2018-10-30
* | Info :
* 1.Remove:ImageBuff[EPD_HEIGHT * EPD_WIDTH / 8]
* 2.Change:EPD_Display(UBYTE *Image)
* Need to pass parameters: pointer to cached data
* 3.Change:
* EPD_RST -> EPD_RST_PIN
* EPD_DC -> EPD_DC_PIN
* EPD_CS -> EPD_CS_PIN
* EPD_BUSY -> EPD_BUSY_PIN
#
# 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_1in54.h"
#include "Debug.h"
const unsigned char lut_full_update[] = {
0x02, 0x02, 0x01, 0x11, 0x12, 0x12, 0x22, 0x22,
0x66, 0x69, 0x69, 0x59, 0x58, 0x99, 0x99, 0x88,
0x00, 0x00, 0x00, 0x00, 0xF8, 0xB4, 0x13, 0x51,
0x35, 0x51, 0x51, 0x19, 0x01, 0x00
};
const unsigned char lut_partial_update[] = {
0x10, 0x18, 0x18, 0x08, 0x18, 0x18, 0x08, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x13, 0x14, 0x44, 0x12,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00
};
/******************************************************************************
function : Software reset
parameter:
******************************************************************************/
static void EPD_Reset(void)
{
DEV_Digital_Write(EPD_RST_PIN, 1);
DEV_Delay_ms(200);
DEV_Digital_Write(EPD_RST_PIN, 0);
DEV_Delay_ms(200);
DEV_Digital_Write(EPD_RST_PIN, 1);
DEV_Delay_ms(200);
}
/******************************************************************************
function : send command
parameter:
Reg : Command register
******************************************************************************/
static void EPD_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_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:
******************************************************************************/
void EPD_WaitUntilIdle(void)
{
Debug("e-Paper busy\r\n");
while(DEV_Digital_Read(EPD_BUSY_PIN) == 1) { //LOW: idle, HIGH: busy
DEV_Delay_ms(100);
}
Debug("e-Paper busy release\r\n");
}
/******************************************************************************
function : Setting the display window
parameter:
******************************************************************************/
static void EPD_SetWindows(UWORD Xstart, UWORD Ystart, UWORD Xend, UWORD Yend)
{
EPD_SendCommand(SET_RAM_X_ADDRESS_START_END_POSITION);
EPD_SendData((Xstart >> 3) & 0xFF);
EPD_SendData((Xend >> 3) & 0xFF);
EPD_SendCommand(SET_RAM_Y_ADDRESS_START_END_POSITION);
EPD_SendData(Ystart & 0xFF);
EPD_SendData((Ystart >> 8) & 0xFF);
EPD_SendData(Yend & 0xFF);
EPD_SendData((Yend >> 8) & 0xFF);
}
/******************************************************************************
function : Set Cursor
parameter:
******************************************************************************/
static void EPD_SetCursor(UWORD Xstart, UWORD Ystart)
{
EPD_SendCommand(SET_RAM_X_ADDRESS_COUNTER);
EPD_SendData((Xstart >> 3) & 0xFF);
EPD_SendCommand(SET_RAM_Y_ADDRESS_COUNTER);
EPD_SendData(Ystart & 0xFF);
EPD_SendData((Ystart >> 8) & 0xFF);
}
/******************************************************************************
function : Turn On Display
parameter:
******************************************************************************/
static void EPD_TurnOnDisplay(void)
{
EPD_SendCommand(DISPLAY_UPDATE_CONTROL_2);
EPD_SendData(0xC4);
EPD_SendCommand(MASTER_ACTIVATION);
EPD_SendCommand(TERMINATE_FRAME_READ_WRITE);
EPD_WaitUntilIdle();
}
/******************************************************************************
function : Initialize the e-Paper register
parameter:
******************************************************************************/
UBYTE EPD_Init(const unsigned char* lut)
{
EPD_Reset();
EPD_SendCommand(DRIVER_OUTPUT_CONTROL);
EPD_SendData((EPD_HEIGHT - 1) & 0xFF);
EPD_SendData(((EPD_HEIGHT - 1) >> 8) & 0xFF);
EPD_SendData(0x00); // GD = 0; SM = 0; TB = 0;
EPD_SendCommand(BOOSTER_SOFT_START_CONTROL);
EPD_SendData(0xD7);
EPD_SendData(0xD6);
EPD_SendData(0x9D);
EPD_SendCommand(WRITE_VCOM_REGISTER);
EPD_SendData(0xA8); // VCOM 7C
EPD_SendCommand(SET_DUMMY_LINE_PERIOD);
EPD_SendData(0x1A); // 4 dummy lines per gate
EPD_SendCommand(SET_GATE_TIME);
EPD_SendData(0x08); // 2us per line
EPD_SendCommand(DATA_ENTRY_MODE_SETTING);
EPD_SendData(0x03);
//set the look-up table register
EPD_SendCommand(WRITE_LUT_REGISTER);
for (UWORD i = 0; i < 30; i++) {
EPD_SendData(lut[i]);
}
return 0;
}
/******************************************************************************
function : Clear screen
parameter:
******************************************************************************/
void EPD_Clear(void)
{
UWORD Width, Height;
Width = (EPD_WIDTH % 8 == 0)? (EPD_WIDTH / 8 ): (EPD_WIDTH / 8 + 1);
Height = EPD_HEIGHT;
EPD_SetWindows(0, 0, EPD_WIDTH, EPD_HEIGHT);
for (UWORD j = 0; j < Height; j++) {
EPD_SetCursor(0, j);
EPD_SendCommand(WRITE_RAM);
for (UWORD i = 0; i < Width; i++) {
EPD_SendData(0XFF);
}
}
EPD_TurnOnDisplay();
}
/******************************************************************************
function : Sends the image buffer in RAM to e-Paper and displays
parameter:
******************************************************************************/
void EPD_Display(UBYTE *Image)
{
UWORD Width, Height;
Width = (EPD_WIDTH % 8 == 0)? (EPD_WIDTH / 8 ): (EPD_WIDTH / 8 + 1);
Height = EPD_HEIGHT;
UDOUBLE Addr = 0;
// UDOUBLE Offset = ImageName;
EPD_SetWindows(0, 0, EPD_WIDTH, EPD_HEIGHT);
for (UWORD j = 0; j < Height; j++) {
EPD_SetCursor(0, j);
EPD_SendCommand(WRITE_RAM);
for (UWORD i = 0; i < Width; i++) {
Addr = i + j * Width;
EPD_SendData(Image[Addr]);
}
}
EPD_TurnOnDisplay();
}
/******************************************************************************
function : Enter sleep mode
parameter:
******************************************************************************/
void EPD_Sleep(void)
{
EPD_SendCommand(DEEP_SLEEP_MODE);
EPD_SendData(0x01);
// EPD_WaitUntilIdle();
}