240 lines
8.3 KiB
C
Executable file
240 lines
8.3 KiB
C
Executable file
/*****************************************************************************
|
|
* | 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();
|
|
}
|