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waveshareteam-e-Paper/Raspberry Pi/c/lib/e-Paper/EPD_4in2.c
hnwangkg-ezio 1f82e4a488 2019.06.24
2019-06-24 17:11:43 +08:00

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/*****************************************************************************
* | File : EPD_4in2.c
* | Author : Waveshare team
* | Function : 4.2inch e-paper
* | Info :
*----------------
* | This version: V3.0
* | Date : 2019-06-13
* | Info :
* -----------------------------------------------------------------------------
* V3.0(2019-06-13):
* 1.Change:
* lut_vcomDC[] => EPD_4IN2_lut_vcomDC[]
* lut_ww[] => EPD_4IN2_lut_ww[]
* lut_bw[] => EPD_4IN2_lut_bw[]
* lut_wb[] => EPD_4IN2_lut_wb[]
* lut_bb[] => EPD_4IN2_lut_bb[]
* EPD_Reset() => EPD_4IN2_Reset()
* EPD_SendCommand() => EPD_4IN2_SendCommand()
* EPD_SendData() => EPD_4IN2_SendData()
* EPD_WaitUntilIdle() => EPD_4IN2_ReadBusy()
* EPD_SetFullReg() => EPD_4IN2_SetFullReg()
* EPD_SetPartReg() => EPD_4IN2_SetPartReg()
* EPD_TurnOnDisplay() => EPD_4IN2_TurnOnDisplay()
* EPD_Init() => EPD_4IN2_Init()
* EPD_Clear() => EPD_4IN2_Clear()
* EPD_Display() => EPD_4IN2_Display()
* EPD_Sleep() => EPD_4IN2_Sleep()
* 2.remove commands define:
* #define PANEL_SETTING 0x00
* #define POWER_SETTING 0x01
* #define POWER_OFF 0x02
* #define POWER_OFF_SEQUENCE_SETTING 0x03
* #define POWER_ON 0x04
* #define POWER_ON_MEASURE 0x05
* #define BOOSTER_SOFT_START 0x06
* #define DEEP_SLEEP 0x07
* #define DATA_START_TRANSMISSION_1 0x10
* #define DATA_STOP 0x11
* #define DISPLAY_REFRESH 0x12
* #define DATA_START_TRANSMISSION_2 0x13
* #define VCOM_LUT 0x20
* #define W2W_LUT 0x21
* #define B2W_LUT 0x22
* #define W2B_LUT 0x23
* #define B2B_LUT 0x24
* #define PLL_CONTROL 0x30
* #define TEMPERATURE_SENSOR_CALIBRATION 0x40
* #define TEMPERATURE_SENSOR_SELECTION 0x41
* #define TEMPERATURE_SENSOR_WRITE 0x42
* #define TEMPERATURE_SENSOR_READ 0x43
* #define VCOM_AND_DATA_INTERVAL_SETTING 0x50
* #define LOW_POWER_DETECTION 0x51
* #define TCON_SETTING 0x60
* #define RESOLUTION_SETTING 0x61
* #define GET_STATUS 0x71
* #define AUTO_MEASURE_VCOM 0x80
* #define READ_VCOM_VALUE 0x81
* #define VCM_DC_SETTING 0x82
* #define PARTIAL_WINDOW 0x90
* #define PARTIAL_IN 0x91
* #define PARTIAL_OUT 0x92
* #define PROGRAM_MODE 0xA0
* #define ACTIVE_PROGRAM 0xA1
* #define READ_OTP_DATA 0xA2
* #define POWER_SAVING 0xE3
* V2.0(2018-10-30):
* 1.Remove:ImageBuff[EPD_HEIGHT * EPD_WIDTH / 8]
* 2.Change:EPD_Display(UBYTE *Image)
* Need to pass parameters: pointer to cached data
#
# 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_4in2.h"
#include "Debug.h"
static const unsigned char EPD_4IN2_lut_vcom0[] = {
0x00, 0x17, 0x00, 0x00, 0x00, 0x02,
0x00, 0x17, 0x17, 0x00, 0x00, 0x02,
0x00, 0x0A, 0x01, 0x00, 0x00, 0x01,
0x00, 0x0E, 0x0E, 0x00, 0x00, 0x02,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
};
static const unsigned char EPD_4IN2_lut_ww[] = {
0x40, 0x17, 0x00, 0x00, 0x00, 0x02,
0x90, 0x17, 0x17, 0x00, 0x00, 0x02,
0x40, 0x0A, 0x01, 0x00, 0x00, 0x01,
0xA0, 0x0E, 0x0E, 0x00, 0x00, 0x02,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
};
static const unsigned char EPD_4IN2_lut_bw[] = {
0x40, 0x17, 0x00, 0x00, 0x00, 0x02,
0x90, 0x17, 0x17, 0x00, 0x00, 0x02,
0x40, 0x0A, 0x01, 0x00, 0x00, 0x01,
0xA0, 0x0E, 0x0E, 0x00, 0x00, 0x02,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
};
static const unsigned char EPD_4IN2_lut_wb[] = {
0x80, 0x17, 0x00, 0x00, 0x00, 0x02,
0x90, 0x17, 0x17, 0x00, 0x00, 0x02,
0x80, 0x0A, 0x01, 0x00, 0x00, 0x01,
0x50, 0x0E, 0x0E, 0x00, 0x00, 0x02,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
};
static const unsigned char EPD_4IN2_lut_bb[] = {
0x80, 0x17, 0x00, 0x00, 0x00, 0x02,
0x90, 0x17, 0x17, 0x00, 0x00, 0x02,
0x80, 0x0A, 0x01, 0x00, 0x00, 0x01,
0x50, 0x0E, 0x0E, 0x00, 0x00, 0x02,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
};
/******************************************************************************
function : Software reset
parameter:
******************************************************************************/
static void EPD_4IN2_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_4IN2_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_4IN2_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_4IN2_ReadBusy(void)
{
Debug("e-Paper busy\r\n");
while(DEV_Digital_Read(EPD_BUSY_PIN) == 0) { //LOW: idle, HIGH: busy
DEV_Delay_ms(100);
}
Debug("e-Paper busy release\r\n");
}
/******************************************************************************
function : Turn On Display
parameter:
******************************************************************************/
static void EPD_4IN2_TurnOnDisplay(void)
{
EPD_4IN2_SendCommand(0x12);
DEV_Delay_ms(100);
EPD_4IN2_ReadBusy();
}
/******************************************************************************
function : set the look-up tables
parameter:
******************************************************************************/
static void EPD_4IN2_SetLut(void)
{
UWORD count;
EPD_4IN2_SendCommand(0x20); //g vcom
for(count=0; count<44; count++) {
EPD_4IN2_SendData(EPD_4IN2_lut_vcom0[count]);
}
EPD_4IN2_SendCommand(0x21);
for(count=0; count<42; count++) {
EPD_4IN2_SendData(EPD_4IN2_lut_ww[count]);
}
EPD_4IN2_SendCommand(0x22);
for(count=0; count<42; count++) {
EPD_4IN2_SendData(EPD_4IN2_lut_bw[count]);
}
EPD_4IN2_SendCommand(0x23);
for(count=0; count<42; count++) {
EPD_4IN2_SendData(EPD_4IN2_lut_wb[count]);
}
EPD_4IN2_SendCommand(0x24);
for(count=0; count<42; count++) {
EPD_4IN2_SendData(EPD_4IN2_lut_bb[count]);
}
}
/******************************************************************************
function : Initialize the e-Paper register
parameter:
******************************************************************************/
void EPD_4IN2_Init(void)
{
EPD_4IN2_Reset();
EPD_4IN2_SendCommand(0x01); // POWER SETTING
EPD_4IN2_SendData(0x03);
EPD_4IN2_SendData(0x00);
EPD_4IN2_SendData(0x2b);
EPD_4IN2_SendData(0x2b);
EPD_4IN2_SendCommand(0x06); // boost soft start
EPD_4IN2_SendData(0x17); //A
EPD_4IN2_SendData(0x17); //B
EPD_4IN2_SendData(0x17); //C
EPD_4IN2_SendCommand(0x04); // POWER_ON
EPD_4IN2_ReadBusy();
EPD_4IN2_SendCommand(0x00); // panel setting
EPD_4IN2_SendData(0xbf); // KW-BF KWR-AF BWROTP 0f BWOTP 1f
EPD_4IN2_SendData(0x0d);
EPD_4IN2_SendCommand(0x30); // PLL setting
EPD_4IN2_SendData(0x3C); // 3A 100HZ 29 150Hz 39 200HZ 31 171HZ
EPD_4IN2_SendCommand(0x61); // resolution setting
EPD_4IN2_SendData(0x01);
EPD_4IN2_SendData(0x90); //128
EPD_4IN2_SendData(0x01); //
EPD_4IN2_SendData(0x2c);
EPD_4IN2_SendCommand(0x82); // vcom_DC setting
EPD_4IN2_SendData(0x28);
EPD_4IN2_SendCommand(0X50); // VCOM AND DATA INTERVAL SETTING
EPD_4IN2_SendData(0x97); // 97white border 77black border VBDF 17|D7 VBDW 97 VBDB 57 VBDF F7 VBDW 77 VBDB 37 VBDR B7
EPD_4IN2_SetLut();
}
/******************************************************************************
function : Clear screen
parameter:
******************************************************************************/
void EPD_4IN2_Clear(void)
{
UWORD Width, Height;
Width = (EPD_4IN2_WIDTH % 8 == 0)? (EPD_4IN2_WIDTH / 8 ): (EPD_4IN2_WIDTH / 8 + 1);
Height = EPD_4IN2_HEIGHT;
EPD_4IN2_SendCommand(0x10);
for (UWORD j = 0; j < Height; j++) {
for (UWORD i = 0; i < Width; i++) {
EPD_4IN2_SendData(0xFF);
}
}
EPD_4IN2_SendCommand(0x13);
for (UWORD j = 0; j < Height; j++) {
for (UWORD i = 0; i < Width; i++) {
EPD_4IN2_SendData(0xFF);
}
}
EPD_4IN2_TurnOnDisplay();
}
/******************************************************************************
function : Sends the image buffer in RAM to e-Paper and displays
parameter:
******************************************************************************/
void EPD_4IN2_Display(UBYTE *Image)
{
UWORD Width, Height;
Width = (EPD_4IN2_WIDTH % 8 == 0)? (EPD_4IN2_WIDTH / 8 ): (EPD_4IN2_WIDTH / 8 + 1);
Height = EPD_4IN2_HEIGHT;
EPD_4IN2_SendCommand(0x13);
for (UWORD j = 0; j < Height; j++) {
for (UWORD i = 0; i < Width; i++) {
EPD_4IN2_SendData(Image[i + j * Width]);
}
}
EPD_4IN2_TurnOnDisplay();
}
/******************************************************************************
function : Enter sleep mode
parameter:
******************************************************************************/
void EPD_4IN2_Sleep(void)
{
EPD_4IN2_SendCommand(0x02); // POWER_OFF
EPD_4IN2_ReadBusy();
EPD_4IN2_SendCommand(0x07); // DEEP_SLEEP
EPD_4IN2_SendData(0XA5);
}
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