/****************************************Copyright (c)**************************************************                         
 * File Name:			Lcd.c 
 * Function Describe:   Driver of LCD
 * Explain:  
 * Writer:				ShiLiangWen
 * Date:				2016-1-8
********************************************************************************************************/
#define THIS_FILE_ID 15
//-------------------------------------------------------
#include "includes.h"  
//-------------------------------------------------------
#define LCD_CS_PIN      GPIO_Pin_12
#define LCD_CS_PORT     GPIOB
#define LCD_CS_HIGH			LCD_CS_PORT->BSRR = LCD_CS_PIN
#define LCD_CS_LOW			LCD_CS_PORT->BRR =  LCD_CS_PIN

#define LCD_SCK_PIN     GPIO_Pin_13
#define LCD_SCK_PORT    GPIOB
#define LCD_SCK_HIGH		LCD_SCK_PORT->BSRR = LCD_SCK_PIN
#define LCD_SCK_LOW			LCD_SCK_PORT->BRR =  LCD_SCK_PIN

#define LCD_DCX_PIN     GPIO_Pin_14
#define LCD_DCX_PORT    GPIOB
#define LCD_DCX_HIGH		LCD_DCX_PORT->BSRR = LCD_DCX_PIN
#define LCD_DCX_LOW			LCD_DCX_PORT->BRR =  LCD_DCX_PIN

#define LCD_SDA_PIN     GPIO_Pin_15
#define LCD_SDA_PORT    GPIOB
#define LCD_SDA_HIGH		LCD_SDA_PORT->BSRR = LCD_SDA_PIN
#define LCD_SDA_LOW			LCD_SDA_PORT->BRR =  LCD_SDA_PIN

#define LCD_RESET_PIN   GPIO_Pin_6
#define LCD_RESET_PORT  GPIOC
#define LCD_RESET_HIGH	LCD_RESET_PORT->BSRR = LCD_RESET_PIN
#define LCD_RESET_LOW		LCD_RESET_PORT->BRR =  LCD_RESET_PIN

#define LCD_BL_PIN      GPIO_Pin_7
#define LCD_BL_PORT     GPIOC
#define LCD_BL_HIGH			LCD_BL_PORT->BSRR = LCD_BL_PIN
#define LCD_BL_LOW			LCD_BL_PORT->BRR =  LCD_BL_PIN



extern const unsigned char g_apucLetter16[];
extern const unsigned char g_apucCLetter16[];

extern const unsigned char g_apucLetter24[];
extern const unsigned char g_apucCLetter24[];

extern const unsigned char g_apucFonts16[];
extern const unsigned char g_apucCFonts16[];
extern const unsigned char g_apucFonts24[];
extern const unsigned char g_apucCFonts24[];

u16 g_usBackColor;	//背景颜色
u16 g_usColor;	//画笔颜色

/*******************************************************************************
* Function Name  : Lcd_Configuration
* Description    : Configures LCD Control lines
* Input          : None
* Output         : None
* Return         : None
* Attention		 : None
*******************************************************************************/
static void LcdPortInit(void)
{
	GPIO_InitTypeDef GPIO_InitStructure;
	
	/* Enable GPIOD and GPIOE clocks */
	RCC_APB2PeriphClockCmd( RCC_APB2Periph_GPIOB | RCC_APB2Periph_GPIOC, ENABLE);  
    
	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;             
  LCD_CS_HIGH;
	LCD_BL_HIGH;
	GPIO_InitStructure.GPIO_Pin = (LCD_CS_PIN|LCD_SCK_PIN|LCD_DCX_PIN|LCD_SDA_PIN);
	GPIO_Init(GPIOB, &GPIO_InitStructure);
	LCD_CS_HIGH;
	LCD_SCK_HIGH;
	LCD_SDA_HIGH;
	LCD_DCX_HIGH;
	LCD_RESET_HIGH;
	LCD_BL_HIGH;
	GPIO_InitStructure.GPIO_Pin = (LCD_RESET_PIN|LCD_BL_PIN);
	GPIO_Init(GPIOC, &GPIO_InitStructure);
  LCD_RESET_HIGH;
	LCD_BL_HIGH;
}

void LcdSendCommand(unsigned char Cmd)
{
	unsigned char i,j;
	LCD_CS_LOW;
	LCD_DCX_LOW;
	for(i=0;i<8;i++){
		j=0x80>>i;
		LCD_SCK_LOW;
		if(Cmd&j)LCD_SDA_HIGH;
		else LCD_SDA_LOW;
		LCD_SCK_HIGH;
	}
	LCD_CS_HIGH;
}

void LcdSendData(unsigned char Data)
{
	unsigned char i,j;
	LCD_CS_LOW;
	LCD_DCX_HIGH;
	for(i=0;i<8;i++){
		j=0x80>>i;
		LCD_SCK_LOW;
		if(Data & j)LCD_SDA_HIGH;
		else LCD_SDA_LOW;
		LCD_SCK_HIGH;
	}
	LCD_CS_HIGH;
}



void LcdInit(void)
{
	LcdPortInit();
	//reset
	LCD_RESET_HIGH;
	DelayMs(1);
	LCD_RESET_LOW;
	DelayMs(1);
	LCD_RESET_HIGH;
	DelayMs(120);

	//-----------------------------------ST7735S Set REG---------------------------------------------//
	LcdSendCommand(0x11); //Sleep out
	DelayMs(120); //Delay 120ms
	//------------------------------------ST7735S Frame Rate-----------------------------------------//
	LcdSendCommand(0xB1);
	LcdSendData(0x05);
	LcdSendData(0x3C);
	LcdSendData(0x3C);
	LcdSendCommand(0xB2);
	LcdSendData(0x05);
	LcdSendData(0x3C);
	LcdSendData(0x3C);
	LcdSendCommand(0xB3);
	LcdSendData(0x05);
	LcdSendData(0x3C);
	LcdSendData(0x3C);
	LcdSendData(0x05);
	LcdSendData(0x3C);
	LcdSendData(0x3C);
	//------------------------------------End ST7735S Frame Rate-----------------------------------------//
	LcdSendCommand(0xB4); //Dot inversion
	LcdSendData(0x03);
	//------------------------------------ST7735S Power Sequence-----------------------------------------//
	LcdSendCommand(0xC0);
	LcdSendData(0x28);
	LcdSendData(0x08);
	LcdSendData(0x04);
	LcdSendCommand(0xC1);
	LcdSendData(0XC0);
	LcdSendCommand(0xC2);
	LcdSendData(0x0D);
	LcdSendData(0x00);
	LcdSendCommand(0xC3);
	LcdSendData(0x8D);
	LcdSendData(0x2A);
	LcdSendCommand(0xC4);
	LcdSendData(0x8D);
	LcdSendData(0xEE);
	//---------------------------------End ST7735S Power Sequence-------------------------------------//
	LcdSendCommand(0xC5); //VCOM
	LcdSendData(0x1A);
	LcdSendCommand(0x36); //MX, MY, RGB mode
	LcdSendData(0x60);//-----------这个值非常重要，决定了内部显存和显示区域的关系，以及RGB颜色顺序
	//------------------------------------ST7735S Gamma Sequence-----------------------------------------//
	LcdSendCommand(0xE0);
	LcdSendData(0x04);
	LcdSendData(0x22);
	LcdSendData(0x07);
	LcdSendData(0x0A);
	LcdSendData(0x2E);
	LcdSendData(0x30);
	LcdSendData(0x25);
	LcdSendData(0x2A);
	LcdSendData(0x28);
	LcdSendData(0x26);
	LcdSendData(0x2E);
	LcdSendData(0x3A);
	LcdSendData(0x00);
	LcdSendData(0x01);
	LcdSendData(0x03);
	LcdSendData(0x13);
	LcdSendCommand(0xE1);
	LcdSendData(0x04);
	LcdSendData(0x16);
	LcdSendData(0x06);
	LcdSendData(0x0D);
	LcdSendData(0x2D);
	LcdSendData(0x26);
	LcdSendData(0x23);
	LcdSendData(0x27);
	LcdSendData(0x27);
	LcdSendData(0x25);
	LcdSendData(0x2D);
	LcdSendData(0x3B);
	LcdSendData(0x00);
	LcdSendData(0x01);
	LcdSendData(0x04);
	LcdSendData(0x13);
	//------------------------------------End ST7735S Gamma Sequence-----------------------------------------//
	LcdSendCommand(0x3A); //65k mode
	LcdSendData(0x05);
	LcdSendCommand(0x29); //Display on
	
	//设置前景色和背景色
	LcdSetColor(COLOR_BLUE,COLOR_WHITE);
	//清屏
	LcdClrAll();

}
/***************************************************************************
*LcdSetColor 设置画笔颜色和背景颜色
****************************************************************************/
void LcdSetColor(u16 BrushColor,u16 BackColor)
{
	g_usColor=BrushColor;	//画笔颜色
	g_usBackColor=BackColor;		//背景颜色
}

/****************************************************************************
* 名    称：void Set_ramaddr(u16 x,u16 y)
* 功    能：指定坐标点
* 入口参数：x轴y轴
* 出口参数：无
* 说    明：2012.4.27 hxm  v1.0
* 调用方法：无 
****************************************************************************/ 					  
void LcdSetRamAddr(u16 x,u16 y)
{
	LcdSendCommand(0x2a);
	LcdSendData(x>>8);
	LcdSendData(x&0xff);

	LcdSendCommand(0x2b);
	LcdSendData(y>>8);
	LcdSendData(y&0xff);
}
/**********************************************************************************************
设置一个写地址区域
************************************************************************************************/
void LcdBlockWrite(u16 x1,u16 y1,u16 x2,u16 y2) 
{
	u16 Xstart,Xend,Ystart,Yend;
	Xstart=x1+1;
	Xend=x2+1;
	Ystart=y1+2;
	Yend=y2+2;
	
	LcdSendCommand(0x2a);   
	LcdSendData(Xstart>>8);
	LcdSendData(Xstart&0xff);
	LcdSendData(Xend>>8);
	LcdSendData(Xend&0xff);

	LcdSendCommand(0x2b);   
	LcdSendData(Ystart>>8);
	LcdSendData(Ystart&0xff);
	LcdSendData(Yend>>8);
	LcdSendData(Yend&0xff);

	LcdSendCommand(0x2c);
}


/***************************************************************************
LcdClrAll
****************************************************************************/
void LcdClrAll(void)
{
	int i,j;
	unsigned char colorH,colorL;
	colorH=g_usBackColor>>8;
	colorL=g_usBackColor&0xff;
	LcdBlockWrite(0,0,159,127);
	for(i=0;i<LCD_HIGH;i++)
	{
		for(j=0;j<LCD_WIDTH;j++)
		{
			LcdSendData(colorH);
			LcdSendData(colorL);
		}
	} 
}
/****************************************************************************
LcdClearRect
指定区域清屏，填充背景色。
****************************************************************************/
void LcdClearRect(u16 xl, u16 yl, u16 xr, u16 yr)
{
	u16 len;
	u8 colorH,colorL;
	u16 i,j;
	if(xl>xr||yl>yr)return;
	len=(xr-xl+1)*(yr-yl+1);
	colorH =  g_usBackColor >> 8;
	colorL =  g_usBackColor & 0x00ff;
	LcdBlockWrite(xl,yl,xr,yr);//LcdBlockWrite(xl,yl,yr,yr);
	for(i=0;i<len;i++){
		LcdSendData(colorH);
		LcdSendData(colorL);
	}
}
/****************************************************************************
LcdFillRect
指定区域填充前景色
****************************************************************************/
void LcdFillRect(u16 xl, u16 yl, u16 xr, u16 yr)
{
	u16 len;
	u8 colorH,colorL;
	u16 i,j;
	if(xl>xr||yl>yr)return;
	len=(xr-xl+1)*(yr-yl+1);
	colorH =  g_usColor >> 8;
	colorL =  g_usColor & 0x00ff;
	LcdBlockWrite(xl,yl,xr,yr);
	for(i=0;i<len;i++){
		LcdSendData(colorH);
		LcdSendData(colorL);
	}
}
/****************************************************************************
LcdSetPoint
指定位置设置一点的颜色,颜色用全局变量画笔颜色g_usColor
坐标：x,y
颜色：color
****************************************************************************/ 					  
void LcdSetPoint(u16 x,u16 y)
{
	LcdSendCommand(0x2a);
	LcdSendData(x>>8);
	LcdSendData(x&0x00ff);
   
	LcdSendCommand(0x2b);
	LcdSendData(y>>8);
	LcdSendData(y&0x00ff);
	
	LcdSendCommand(0X2C);
	LcdSendData(g_usColor>>8);
	LcdSendData(g_usColor&0x00ff);
}


/****************************************************************************
LcdDrawHLine
画水平线
****************************************************************************/
void LcdDrawHLine(u16 x1, u16 x2, u16 y, u8 width)
{
	if(width==0)return;
	if(x2<x1)return;
	width-=1;
	LcdFillRect(x1,y,x2,y+width);
}
/****************************************************************************
LcdDrawVLine
画垂直线
****************************************************************************/
void LcdDrawVLine(u16 y1, u16 y2, u16 x, u8 width)
{
	if(width==0)return;
	if(y2<y1)return;
	width-=1;
	LcdFillRect(x,y1,x+width,y2);
}

/****************************************************************************
LcdDrawRect
画矩形框，中间不填充
****************************************************************************/
void LcdDrawRect(u16 x1, u16 y1, u16 x2, u16 y2,u8 width)
{
	if(x1>x2||y1>y2)return;
	LcdDrawHLine(x1,x2,y1,width);
	LcdDrawHLine(x1,x2,y2,width);
	LcdDrawVLine(y1,y2,x1,width);
	LcdDrawVLine(y1,y2,x2,width);
	
}

/***************************************************************************
*在LCD上显示一个字符
****************************************************************************/
void LcdShowChar(u16 x,u16 y,u8 hiByte,u8 loByte,u8 mode)
{
	unsigned short i,j,k,m;
	unsigned short width,height;
	unsigned char ByteWidth,data;
	unsigned char colorH,colorL;
	unsigned char bgcolorH,bgcolorL;
	const unsigned char *l_pucFont,*l_pucLetter;
	unsigned char *p;
	unsigned char font;//字体
	unsigned char cover;//覆盖方式
	font=mode&0xf0;
	cover=mode&0x0f;
	
	k = 0;
	if(!hiByte)								//english
	{
		if(font==0x00)			//8 * 16
		{
			width=8;
			height = 16;
			ByteWidth = 1;
			l_pucFont = g_apucFonts16;
			l_pucLetter = g_apucLetter16;
		}else{							//16 * 24
			width=16;
			height = 24;
			ByteWidth = 2;
			l_pucFont = g_apucFonts24;
			l_pucLetter = g_apucLetter24;
		}
		//
		while(*l_pucLetter)
		{
			if(loByte == *l_pucLetter)break;
			l_pucLetter ++;
			k ++;
		}
	}
	else									//chinese
	{
		if(font == 0x00)//16 * 16
		{
			width=16;
			height = 16;
			ByteWidth = 2;
			l_pucFont = g_apucCFonts16;
			l_pucLetter = g_apucCLetter16;
		}else{//24 * 24
			width=24;
			height = 24;
			ByteWidth = 3;
			l_pucFont = g_apucCFonts24;
			l_pucLetter = g_apucCLetter24;
		}
		//
		while(*l_pucLetter)
		{
			if(hiByte == *l_pucLetter && loByte == *(l_pucLetter + 1))break;
			l_pucLetter += 2;
			k ++;
		}
	}			   
	//查找到字库的开始位置
	l_pucFont += k * ByteWidth * height;
	//刷屏显示
	colorH=g_usColor>>8;
	colorL=g_usColor&0xff;
	bgcolorH=g_usBackColor>>8;
	bgcolorL=g_usBackColor&0xff;
	
	LcdBlockWrite(x,y,x+width-1,y+height-1);
	for(j=0;j<height;j++){
		for(i=0;i<ByteWidth;i++){
			data=*l_pucFont++;
			for(k=0;k<8;k++){
				if(data & (0x80>>k)){
					LcdSendData(colorH);
					LcdSendData(colorL);
				}else{
					//if(cover){
						LcdSendData(bgcolorH);
						LcdSendData(bgcolorH);
					//}
				}
			}
		}
	}
}

/******************************************************************************
LcdShowStr
指定位置显示字符串
左上角坐标:x,y
显示内容：string
模式：mode 高4位代表字体，低4位为模式
******************************************************************************/
void LcdShowStr(u16 x, u16 y,const char *string,u8 mode)
{
	unsigned char width1,width2;
	unsigned char *p;
	unsigned short i;
	unsigned char font;//字体
	font=mode&0xf0;
	
	if(font == 0x00)					//16bit font
	{
		width1 = 2;
		width2 = 1;
	}
	else										//24bit font
	{
		width1 = 3;
		width2 = 1;
	}
	p = (unsigned char *)string;
	i = 0;
	while(*p)
	{
		if (*p > 0x9f)							//chinese letter
		{
			LcdShowChar(x+i,y,*p, *(p+1),mode); 
			i += width1 * 8;
			p += 2;
		}
		else									//english letter
		{
			LcdShowChar(x + i,y,0,*p,mode);
			if(font==0){
				i += width2 * 8;
			}else{
				i += width2 * 16;
			}
			p ++;
		}
	}
}



void LcdTest(u16 color)
{
	int  x,y;
	LcdSetColor(COLOR_BLUE,COLOR_WHITE);
	LcdClrAll();
	//LcdShowStr(0,0,"深圳圳",0x10);
	LcdDrawRect(10,10,80,40,2);
	LcdFillRect(10,20,60,60);
	LcdDrawHLine(5,120,5,1);
	LcdDrawVLine(5,120,130,2);
	/*
	LcdBlockWrite(159,0,159,0);
	color=0xf800;
	LcdSendData(color>>8);
	LcdSendData(color&0x00ff);

	
	LcdBlockWrite(0,0,7,7);
	color=0xf800;
	for(x=0;x<64;x++){
		LcdSendData(color>>8);
		LcdSendData(color&0x00ff);
	}
	
	LcdBlockWrite(0,120,7,127);
	color=0x07e0;
	for(x=0;x<64;x++){
		LcdSendData(color>>8);
		LcdSendData(color&0x00ff);
	}
	
	LcdBlockWrite(152,120,159,127);
	color=0x001f;
	for(x=0;x<64;x++){
		LcdSendData(color>>8);
		LcdSendData(color&0x00ff);
	}
	*/

}
/*********************************************************************************************************
      END FILE
*********************************************************************************************************/