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waveshareteam-e-Paper/Raspberry Pi/c/lib/e-Paper/EPD_2in7.c
hnwangkg-ezio 1f82e4a488 2019.06.24
2019-06-24 17:11:43 +08:00

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/*****************************************************************************
* | File : EPD_2in7.c
* | Author : Waveshare team
* | Function : 2.7inch e-paper
* | Info :
*----------------
* | This version: V3.0
* | Date : 2019-06-12
* | Info :
* -----------------------------------------------------------------------------
* V3.0(2019-06-12):
* 1.Change:
* lut_vcom_dc[] => EPD_2in7_lut_vcom_dc[]
* lut_ww[] => EPD_2in7_lut_ww[]
* lut_bw[] => EPD_2in7_lut_bw[]
* lut_bb[] => EPD_2in7_lut_bb[]
* lut_wb[] => EPD_2in7_lut_wb[]
* EPD_Reset() => EPD_2in7_Reset()
* EPD_SendCommand() => EPD_2in7_SendCommand()
* EPD_SendData() => EPD_2in7_SendData()
* EPD_WaitUntilIdle() => EPD_2in7_ReadBusy()
* EPD_SetLut() => EPD_2in7_SetLut()
* EPD_Init() => EPD_2in7_Init()
* EPD_Clear() => EPD_2in7_Clear()
* EPD_Display() => EPD_2in7_Display()
* EPD_Sleep() => EPD_2in7_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 PLL_CONTROL 0x30
* #define TEMPERATURE_SENSOR_COMMAND 0x40
* #define TEMPERATURE_SENSOR_CALIBRATION 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 TCON_RESOLUTION 0x61
* #define SOURCE_AND_GATE_START_SETTING 0x62
* #define GET_STATUS 0x71
* #define AUTO_MEASURE_VCOM 0x80
* #define VCOM_VALUE 0x81
* #define VCM_DC_SETTING_REGISTER 0x82
* #define PROGRAM_MODE 0xA0
* #define ACTIVE_PROGRAM 0xA1
* #define READ_OTP_DATA 0xA2
* -----------------------------------------------------------------------------
* V2.0(2018-11-06):
* 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_2in7.h"
#include "Debug.h"
static const unsigned char EPD_2in7_lut_vcom_dc[] = {
0x00 ,0x00,
0x00 ,0x08 ,0x00 ,0x00 ,0x00 ,0x02,
0x60 ,0x28 ,0x28 ,0x00 ,0x00 ,0x01,
0x00 ,0x14 ,0x00 ,0x00 ,0x00 ,0x01,
0x00 ,0x12 ,0x12 ,0x00 ,0x00 ,0x01,
0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00,
0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00,
0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00
};
static const unsigned char EPD_2in7_lut_ww[] = {
0x40 ,0x08 ,0x00 ,0x00 ,0x00 ,0x02,
0x90 ,0x28 ,0x28 ,0x00 ,0x00 ,0x01,
0x40 ,0x14 ,0x00 ,0x00 ,0x00 ,0x01,
0xA0 ,0x12 ,0x12 ,0x00 ,0x00 ,0x01,
0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00,
0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00,
0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00,
};
static const unsigned char EPD_2in7_lut_bw[] = {
0x40 ,0x08 ,0x00 ,0x00 ,0x00 ,0x02,
0x90 ,0x28 ,0x28 ,0x00 ,0x00 ,0x01,
0x40 ,0x14 ,0x00 ,0x00 ,0x00 ,0x01,
0xA0 ,0x12 ,0x12 ,0x00 ,0x00 ,0x01,
0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00,
0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00,
0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00,
};
static const unsigned char EPD_2in7_lut_bb[] = {
0x80 ,0x08 ,0x00 ,0x00 ,0x00 ,0x02,
0x90 ,0x28 ,0x28 ,0x00 ,0x00 ,0x01,
0x80 ,0x14 ,0x00 ,0x00 ,0x00 ,0x01,
0x50 ,0x12 ,0x12 ,0x00 ,0x00 ,0x01,
0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00,
0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00,
0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00,
};
static const unsigned char EPD_2in7_lut_wb[] = {
0x80 ,0x08 ,0x00 ,0x00 ,0x00 ,0x02,
0x90 ,0x28 ,0x28 ,0x00 ,0x00 ,0x01,
0x80 ,0x14 ,0x00 ,0x00 ,0x00 ,0x01,
0x50 ,0x12 ,0x12 ,0x00 ,0x00 ,0x01,
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_2in7_Reset(void)
{
DEV_Digital_Write(EPD_RST_PIN, 1);
DEV_Delay_ms(200);
DEV_Digital_Write(EPD_RST_PIN, 0);
DEV_Delay_ms(10);
DEV_Digital_Write(EPD_RST_PIN, 1);
DEV_Delay_ms(200);
}
/******************************************************************************
function : send command
parameter:
Reg : Command register
******************************************************************************/
static void EPD_2in7_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_2in7_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_2in7_ReadBusy(void)
{
Debug("e-Paper busy\r\n");
UBYTE busy;
do {
EPD_2in7_SendCommand(0x71);
busy = DEV_Digital_Read(EPD_BUSY_PIN);
busy =!(busy & 0x01);
} while(busy);
DEV_Delay_ms(200);
Debug("e-Paper busy release\r\n");
}
/******************************************************************************
function : set the look-up tables
parameter:
******************************************************************************/
static void EPD_2in7_SetLut(void)
{
unsigned int count;
EPD_2in7_SendCommand(0x20); //vcom
for(count = 0; count < 44; count++) {
EPD_2in7_SendData(EPD_2in7_lut_vcom_dc[count]);
}
EPD_2in7_SendCommand(0x21); //ww --
for(count = 0; count < 42; count++) {
EPD_2in7_SendData(EPD_2in7_lut_ww[count]);
}
EPD_2in7_SendCommand(0x22); //bw r
for(count = 0; count < 42; count++) {
EPD_2in7_SendData(EPD_2in7_lut_bw[count]);
}
EPD_2in7_SendCommand(0x23); //wb w
for(count = 0; count < 42; count++) {
EPD_2in7_SendData(EPD_2in7_lut_bb[count]);
}
EPD_2in7_SendCommand(0x24); //bb b
for(count = 0; count < 42; count++) {
EPD_2in7_SendData(EPD_2in7_lut_wb[count]);
}
}
/******************************************************************************
function : Initialize the e-Paper register
parameter:
******************************************************************************/
void EPD_2IN7_Init(void)
{
EPD_2in7_Reset();
EPD_2in7_SendCommand(0x01); // POWER_SETTING
EPD_2in7_SendData(0x03); // VDS_EN, VDG_EN
EPD_2in7_SendData(0x00); // VCOM_HV, VGHL_LV[1], VGHL_LV[0]
EPD_2in7_SendData(0x2b); // VDH
EPD_2in7_SendData(0x2b); // VDL
EPD_2in7_SendData(0x09); // VDHR
EPD_2in7_SendCommand(0x06); // BOOSTER_SOFT_START
EPD_2in7_SendData(0x07);
EPD_2in7_SendData(0x07);
EPD_2in7_SendData(0x17);
// Power optimization
EPD_2in7_SendCommand(0xF8);
EPD_2in7_SendData(0x60);
EPD_2in7_SendData(0xA5);
// Power optimization
EPD_2in7_SendCommand(0xF8);
EPD_2in7_SendData(0x89);
EPD_2in7_SendData(0xA5);
// Power optimization
EPD_2in7_SendCommand(0xF8);
EPD_2in7_SendData(0x90);
EPD_2in7_SendData(0x00);
// Power optimization
EPD_2in7_SendCommand(0xF8);
EPD_2in7_SendData(0x93);
EPD_2in7_SendData(0x2A);
// Power optimization
EPD_2in7_SendCommand(0xF8);
EPD_2in7_SendData(0xA0);
EPD_2in7_SendData(0xA5);
// Power optimization
EPD_2in7_SendCommand(0xF8);
EPD_2in7_SendData(0xA1);
EPD_2in7_SendData(0x00);
// Power optimization
EPD_2in7_SendCommand(0xF8);
EPD_2in7_SendData(0x73);
EPD_2in7_SendData(0x41);
EPD_2in7_SendCommand(0x16); // PARTIAL_DISPLAY_REFRESH
EPD_2in7_SendData(0x00);
EPD_2in7_SendCommand(0x04); // POWER_ON
EPD_2in7_ReadBusy();
EPD_2in7_SendCommand(0x00); // PANEL_SETTING
EPD_2in7_SendData(0xAF); // KW-BF KWR-AF BWROTP 0f
EPD_2in7_SendCommand(0x30); // PLL_CONTROL
EPD_2in7_SendData(0x3A); // 3A 100HZ 29 150Hz 39 200HZ 31 171HZ
EPD_2in7_SendCommand(0x82); // VCM_DC_SETTING_REGISTER
EPD_2in7_SendData(0x12);
EPD_2in7_SetLut();
}
/******************************************************************************
function : Clear screen
parameter:
******************************************************************************/
void EPD_2IN7_Clear(void)
{
UWORD Width, Height;
Width = (EPD_2IN7_WIDTH % 8 == 0)? (EPD_2IN7_WIDTH / 8 ): (EPD_2IN7_WIDTH / 8 + 1);
Height = EPD_2IN7_HEIGHT;
EPD_2in7_SendCommand(0x10);
for (UWORD j = 0; j < Height; j++) {
for (UWORD i = 0; i < Width; i++) {
EPD_2in7_SendData(0XFF);
}
}
EPD_2in7_SendCommand(0x13);
for (UWORD j = 0; j < Height; j++) {
for (UWORD i = 0; i < Width; i++) {
EPD_2in7_SendData(0XFF);
}
}
EPD_2in7_SendCommand(0x12);
EPD_2in7_ReadBusy();
}
/******************************************************************************
function : Sends the image buffer in RAM to e-Paper and displays
parameter:
******************************************************************************/
void EPD_2IN7_Display(UBYTE *Image)
{
UWORD Width, Height;
Width = (EPD_2IN7_WIDTH % 8 == 0)? (EPD_2IN7_WIDTH / 8 ): (EPD_2IN7_WIDTH / 8 + 1);
Height = EPD_2IN7_HEIGHT;
EPD_2in7_SendCommand(0x10);
for (UWORD j = 0; j < Height; j++) {
for (UWORD i = 0; i < Width; i++) {
EPD_2in7_SendData(0XFF);
}
}
EPD_2in7_SendCommand(0x13);
for (UWORD j = 0; j < Height; j++) {
for (UWORD i = 0; i < Width; i++) {
EPD_2in7_SendData(Image[i + j * Width]);
}
}
EPD_2in7_SendCommand(0x12);
EPD_2in7_ReadBusy();
}
/******************************************************************************
function : Enter sleep mode
parameter:
******************************************************************************/
void EPD_2IN7_Sleep(void)
{
EPD_2in7_SendCommand(0X50);
EPD_2in7_SendData(0xf7);
EPD_2in7_SendCommand(0X02); //power off
EPD_2in7_SendCommand(0X07); //deep sleep
EPD_2in7_SendData(0xA5);
}
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