/*****************************************************************************
* | File      	:	EPD_7in5.c
* | Author      :   Waveshare team
* | Function    :   Electronic paper driver
* | Info        :
*----------------
* |	This version:   V2.0
* | Date        :   2018-11-09
* | 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_7in5_V2.h"
#include "Debug.h"


UBYTE Voltage_Frame_7IN5_V2[]={
	0x6, 0x3F, 0x3F, 0x11, 0x24, 0x7, 0x17,
};

UBYTE LUT_VCOM_7IN5_V2[]={	
	0x0,	0xF,	0xF,	0x0,	0x0,	0x1,	
	0x0,	0xF,	0x1,	0xF,	0x1,	0x2,	
	0x0,	0xF,	0xF,	0x0,	0x0,	0x1,	
	0x0,	0x0,	0x0,	0x0,	0x0,	0x0,	
	0x0,	0x0,	0x0,	0x0,	0x0,	0x0,	
	0x0,	0x0,	0x0,	0x0,	0x0,	0x0,	
	0x0,	0x0,	0x0,	0x0,	0x0,	0x0,	
};						

UBYTE LUT_WW_7IN5_V2[]={	
	0x10,	0xF,	0xF,	0x0,	0x0,	0x1,	
	0x84,	0xF,	0x1,	0xF,	0x1,	0x2,	
	0x20,	0xF,	0xF,	0x0,	0x0,	0x1,	
	0x0,	0x0,	0x0,	0x0,	0x0,	0x0,	
	0x0,	0x0,	0x0,	0x0,	0x0,	0x0,	
	0x0,	0x0,	0x0,	0x0,	0x0,	0x0,	
	0x0,	0x0,	0x0,	0x0,	0x0,	0x0,	
};

UBYTE LUT_BW_7IN5_V2[]={	
	0x10,	0xF,	0xF,	0x0,	0x0,	0x1,	
	0x84,	0xF,	0x1,	0xF,	0x1,	0x2,	
	0x20,	0xF,	0xF,	0x0,	0x0,	0x1,	
	0x0,	0x0,	0x0,	0x0,	0x0,	0x0,	
	0x0,	0x0,	0x0,	0x0,	0x0,	0x0,	
	0x0,	0x0,	0x0,	0x0,	0x0,	0x0,	
	0x0,	0x0,	0x0,	0x0,	0x0,	0x0,	
};

UBYTE LUT_WB_7IN5_V2[]={	
	0x80,	0xF,	0xF,	0x0,	0x0,	0x1,	
	0x84,	0xF,	0x1,	0xF,	0x1,	0x2,	
	0x40,	0xF,	0xF,	0x0,	0x0,	0x1,	
	0x0,	0x0,	0x0,	0x0,	0x0,	0x0,	
	0x0,	0x0,	0x0,	0x0,	0x0,	0x0,	
	0x0,	0x0,	0x0,	0x0,	0x0,	0x0,	
	0x0,	0x0,	0x0,	0x0,	0x0,	0x0,	
};

UBYTE LUT_BB_7IN5_V2[]={	
	0x80,	0xF,	0xF,	0x0,	0x0,	0x1,	
	0x84,	0xF,	0x1,	0xF,	0x1,	0x2,	
	0x40,	0xF,	0xF,	0x0,	0x0,	0x1,	
	0x0,	0x0,	0x0,	0x0,	0x0,	0x0,	
	0x0,	0x0,	0x0,	0x0,	0x0,	0x0,	
	0x0,	0x0,	0x0,	0x0,	0x0,	0x0,	
	0x0,	0x0,	0x0,	0x0,	0x0,	0x0,	
};

/******************************************************************************
function :	Software reset
parameter:
******************************************************************************/
static void EPD_Reset(void)
{
    DEV_Digital_Write(EPD_RST_PIN, 1);
    DEV_Delay_ms(20);
    DEV_Digital_Write(EPD_RST_PIN, 0);
    DEV_Delay_ms(2);
    DEV_Digital_Write(EPD_RST_PIN, 1);
    DEV_Delay_ms(20);
}

/******************************************************************************
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:
******************************************************************************/
static void EPD_WaitUntilIdle(void)
{
    Debug("e-Paper busy\r\n");
	do{
		DEV_Delay_ms(5);  
	}while(!(DEV_Digital_Read(EPD_BUSY_PIN)));   
	DEV_Delay_ms(5);      
    Debug("e-Paper busy release\r\n");
}

static void EPD_7IN5_V2_LUT(UBYTE* lut_vcom,  UBYTE* lut_ww, UBYTE* lut_bw, UBYTE* lut_wb, UBYTE* lut_bb)
{
	UBYTE count;

	EPD_SendCommand(0x20); //VCOM	
	for(count=0; count<42; count++)
		EPD_SendData(lut_vcom[count]);

	EPD_SendCommand(0x21); //LUTBW
	for(count=0; count<42; count++)
		EPD_SendData(lut_ww[count]);

	EPD_SendCommand(0x22); //LUTBW
	for(count=0; count<42; count++)
		EPD_SendData(lut_bw[count]);

	EPD_SendCommand(0x23); //LUTWB
	for(count=0; count<42; count++)
		EPD_SendData(lut_wb[count]);

	EPD_SendCommand(0x24); //LUTBB
	for(count=0; count<42; count++)
		EPD_SendData(lut_bb[count]);
}

/******************************************************************************
function :	Turn On Display
parameter:
******************************************************************************/
static void EPD_7IN5_V2_TurnOnDisplay(void)
{	
    EPD_SendCommand(0x12);			//DISPLAY REFRESH
    DEV_Delay_ms(100);	        //!!!The delay here is necessary, 200uS at least!!!
    EPD_WaitUntilIdle();
}

/******************************************************************************
function :	Initialize the e-Paper register
parameter:
******************************************************************************/
UBYTE EPD_7IN5_V2_Init(void)
{
    EPD_Reset();

    // EPD_SendCommand(0x01);			//POWER SETTING
    // EPD_SendData(0x07);
    // EPD_SendData(0x07);		//VGH=20V,VGL=-20V
    // EPD_SendData(0x3f);		//VDH=15V
    // EPD_SendData(0x3f);		//VDL=-15V

	EPD_SendCommand(0x01);  // power setting
	EPD_SendData(0x17);  // 1-0=11: internal power
	EPD_SendData(*(Voltage_Frame_7IN5_V2+6));  // VGH&VGL
	EPD_SendData(*(Voltage_Frame_7IN5_V2+1));  // VSH
	EPD_SendData(*(Voltage_Frame_7IN5_V2+2));  //  VSL
	EPD_SendData(*(Voltage_Frame_7IN5_V2+3));  //  VSHR
	
	EPD_SendCommand(0x82);  // VCOM DC Setting
	EPD_SendData(*(Voltage_Frame_7IN5_V2+4));  // VCOM

	EPD_SendCommand(0x06);  // Booster Setting
	EPD_SendData(0x27);
	EPD_SendData(0x27);
	EPD_SendData(0x2F);
	EPD_SendData(0x17);
	
	EPD_SendCommand(0x30);   // OSC Setting
	EPD_SendData(*(Voltage_Frame_7IN5_V2+0));  // 2-0=100: N=4  ; 5-3=111: M=7  ;  3C=50Hz     3A=100HZ

    EPD_SendCommand(0x04); //POWER ON
    DEV_Delay_ms(100);
    EPD_WaitUntilIdle();

    EPD_SendCommand(0X00);			//PANNEL SETTING
    EPD_SendData(0x3F);   //KW-3f   KWR-2F	BWROTP 0f	BWOTP 1f

    EPD_SendCommand(0x61);        	//tres
    EPD_SendData(0x03);		//source 800
    EPD_SendData(0x20);
    EPD_SendData(0x01);		//gate 480
    EPD_SendData(0xE0);

    EPD_SendCommand(0X15);
    EPD_SendData(0x00);

    EPD_SendCommand(0X50);			//VCOM AND DATA INTERVAL SETTING
    EPD_SendData(0x10);
    EPD_SendData(0x00);

    EPD_SendCommand(0X60);			//TCON SETTING
    EPD_SendData(0x22);

    EPD_SendCommand(0x65);  // Resolution setting
    EPD_SendData(0x00);
    EPD_SendData(0x00);//800*480
    EPD_SendData(0x00);
    EPD_SendData(0x00);
	
	EPD_7IN5_V2_LUT(LUT_VCOM_7IN5_V2, LUT_WW_7IN5_V2, LUT_BW_7IN5_V2, LUT_WB_7IN5_V2, LUT_BB_7IN5_V2);
	
    return 0;
}

/******************************************************************************
function :	Clear screen
parameter:
******************************************************************************/
void EPD_7IN5_V2_Clear(void)
{
    UWORD Width, Height;
    Width =(EPD_7IN5_V2_WIDTH % 8 == 0)?(EPD_7IN5_V2_WIDTH / 8 ):(EPD_7IN5_V2_WIDTH / 8 + 1);
    Height = EPD_7IN5_V2_HEIGHT;

    UWORD i;
    EPD_SendCommand(0x10);
    for(i=0; i<Height*Width; i++) {
        EPD_SendData(0xFF);
    }
    EPD_SendCommand(0x13);
    for(i=0; i<Height*Width; i++)	{
        EPD_SendData(0x00);
    }
    EPD_7IN5_V2_TurnOnDisplay();
}

void EPD_7IN5_V2_ClearBlack(void)
{
    UWORD Width, Height;
    Width =(EPD_7IN5_V2_WIDTH % 8 == 0)?(EPD_7IN5_V2_WIDTH / 8 ):(EPD_7IN5_V2_WIDTH / 8 + 1);
    Height = EPD_7IN5_V2_HEIGHT;

    UWORD i;
    EPD_SendCommand(0x10);
    for(i=0; i<Height*Width; i++) {
        EPD_SendData(0x00);
    }
    EPD_SendCommand(0x13);
    for(i=0; i<Height*Width; i++) {
        EPD_SendData(0xFF);
    }
    EPD_7IN5_V2_TurnOnDisplay();
}

/******************************************************************************
function :	Sends the image buffer in RAM to e-Paper and displays
parameter:
******************************************************************************/
void EPD_7IN5_V2_Display(const UBYTE *blackimage)
{
    UDOUBLE Width, Height;
    Width =(EPD_7IN5_V2_WIDTH % 8 == 0)?(EPD_7IN5_V2_WIDTH / 8 ):(EPD_7IN5_V2_WIDTH / 8 + 1);
    Height = EPD_7IN5_V2_HEIGHT;
	
    // EPD_SendCommand(0x10);
    // for (UDOUBLE j = 0; j < Height; j++) {
    //     for (UDOUBLE i = 0; i < Width; i++) {
    //         EPD_SendData(blackimage[i + j * Width]);
    //     }
    // }
    EPD_SendCommand(0x13);
    for (UDOUBLE j = 0; j < Height; j++) {
        for (UDOUBLE i = 0; i < Width; i++) {
            EPD_SendData(~blackimage[i + j * Width]);
        }
    }
    EPD_7IN5_V2_TurnOnDisplay();
}

/******************************************************************************
function :	Enter sleep mode
parameter:
******************************************************************************/
void EPD_7IN5_V2_Sleep(void)
{
    EPD_SendCommand(0X02);  	//power off
    EPD_WaitUntilIdle();
    EPD_SendCommand(0X07);  	//deep sleep
    EPD_SendData(0xA5);
}
