//////////////////////////////////////////////////////////////////////////////////	 
//本程序只供学习使用，未经作者许可，不得用于其它任何用途
//测试硬件：单片机STM32F103RCT6,正点原子MiniSTM32开发板,主频72MHZ，晶振12MHZ
//QDtech-TFT液晶驱动 for STM32 IO模拟
//xiao冯@ShenZhen QDtech co.,LTD
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//创建日期:2018/08/09
//版本：V1.0
//版权所有，盗版必究。
//Copyright(C) 深圳市全动电子技术有限公司 2018-2028
//All rights reserved
/****************************************************************************************************
//=========================================电源接线================================================//
//     LCD模块                STM32单片机
//      VCC          接        DC5V/3.3V      //电源
//      GND          接          GND          //电源地
//=======================================液晶屏数据线接线==========================================//
//本模块默认数据总线类型为SPI总线
//     LCD模块                STM32单片机    
//    SDI(MOSI)      接          PB15         //液晶屏SPI总线数据写信号
//    SDO(MISO)      接          PB14         //液晶屏SPI总线数据读信号，如果不需要读，可以不接线
//=======================================液晶屏控制线接线==========================================//
//     LCD模块 					      STM32单片机 
//       LED         接          PB9          //液晶屏背光控制信号，如果不需要控制，接5V或3.3V
//       SCK         接          PB13         //液晶屏SPI总线时钟信号
//      DC/RS        接          PB10         //液晶屏数据/命令控制信号
//       RST         接          PB12         //液晶屏复位控制信号
//       CS          接          PB11         //液晶屏片选控制信号
//=========================================触摸屏触接线=========================================//
//如果模块不带触摸功能或者带有触摸功能，但是不需要触摸功能，则不需要进行触摸屏接线
//	   LCD模块                STM32单片机 
//      T_IRQ        接          PC10         //触摸屏触摸中断信号
//      T_DO         接          PC2          //触摸屏SPI总线读信号
//      T_DIN        接          PC3          //触摸屏SPI总线写信号
//      T_CS         接          PC13         //触摸屏片选控制信号
//      T_CLK        接          PC0          //触摸屏SPI总线时钟信号
**************************************************************************************************/	
 /* @attention
  *
  * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
  * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
  * TIME. AS A RESULT, QD electronic SHALL NOT BE HELD LIABLE FOR ANY
  * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
  * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
  * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
**************************************************************************************************/	
#include "lcd.h"
#include "stdlib.h"
#include "delay.h"	 
#include "spi.h"

	   
//管理LCD重要参数
//默认为竖屏
_lcd_dev lcddev;

//画笔颜色,背景颜色
u16 POINT_COLOR = 0x0000,BACK_COLOR = 0xFFFF;  
u16 DeviceCode;	 

/*****************************************************************************
 * @name       :void LCD_WR_REG(u8 data)
 * @date       :2018-08-09 
 * @function   :Write an 8-bit command to the LCD screen
 * @parameters :data:Command value to be written
 * @retvalue   :None
******************************************************************************/
void LCD_WR_REG(u8 data)
{ 
   LCD_CS_CLR;     
	 LCD_RS_CLR;	  
   SPI_WriteByte(SPI2,data);
   LCD_CS_SET;	
}

/*****************************************************************************
 * @name       :void LCD_WR_DATA(u8 data)
 * @date       :2018-08-09 
 * @function   :Write an 8-bit data to the LCD screen
 * @parameters :data:data value to be written
 * @retvalue   :None
******************************************************************************/
void LCD_WR_DATA(u8 data)
{
   LCD_CS_CLR;
	 LCD_RS_SET;
   SPI_WriteByte(SPI2,data);
   LCD_CS_SET;
}

/*****************************************************************************
 * @name       :void LCD_WriteReg(u8 LCD_Reg, u16 LCD_RegValue)
 * @date       :2018-08-09 
 * @function   :Write data into registers
 * @parameters :LCD_Reg:Register address
                LCD_RegValue:Data to be written
 * @retvalue   :None
******************************************************************************/
void LCD_WriteReg(u8 LCD_Reg, u16 LCD_RegValue)
{	
	LCD_WR_REG(LCD_Reg);  
	LCD_WR_DATA(LCD_RegValue);	    		 
}	   

/*****************************************************************************
 * @name       :void LCD_WriteRAM_Prepare(void)
 * @date       :2018-08-09 
 * @function   :Write GRAM
 * @parameters :None
 * @retvalue   :None
******************************************************************************/	 
void LCD_WriteRAM_Prepare(void)
{
	LCD_WR_REG(lcddev.wramcmd);
}	 

/*****************************************************************************
 * @name       :void Lcd_WriteData_16Bit(u16 Data)
 * @date       :2018-08-09 
 * @function   :Write an 16-bit command to the LCD screen
 * @parameters :Data:Data to be written
 * @retvalue   :None
******************************************************************************/	 
void Lcd_WriteData_16Bit(u16 Data)
{	
   LCD_CS_CLR;
   LCD_RS_SET;  
   SPI_WriteByte(SPI2,Data>>8);
	 SPI_WriteByte(SPI2,Data);
   LCD_CS_SET;
}

/*****************************************************************************
 * @name       :void LCD_DrawPoint(u16 x,u16 y)
 * @date       :2018-08-09 
 * @function   :Write a pixel data at a specified location
 * @parameters :x:the x coordinate of the pixel
                y:the y coordinate of the pixel
 * @retvalue   :None
******************************************************************************/	
void LCD_DrawPoint(u16 x,u16 y)
{
	LCD_SetCursor(x,y);//设置光标位置 
	Lcd_WriteData_16Bit(POINT_COLOR); 
}

/*****************************************************************************
 * @name       :void LCD_Clear(u16 Color)
 * @date       :2018-08-09 
 * @function   :Full screen filled LCD screen
 * @parameters :color:Filled color
 * @retvalue   :None
******************************************************************************/	
void LCD_Clear(u16 Color)
{
  unsigned int i,m;  
	LCD_SetWindows(0,0,lcddev.width-1,lcddev.height-1);   
	LCD_CS_CLR;
	LCD_RS_SET;
	for(i=0;i<lcddev.height;i++)
	{
    for(m=0;m<lcddev.width;m++)
    {	
			Lcd_WriteData_16Bit(Color);
		}
	}
	 LCD_CS_SET;
} 

/*****************************************************************************
 * @name       :void LCD_GPIOInit(void)
 * @date       :2018-08-09 
 * @function   :Initialization LCD screen GPIO
 * @parameters :None
 * @retvalue   :None
******************************************************************************/	
void LCD_GPIOInit(void)
{
	GPIO_InitTypeDef  GPIO_InitStructure;	      
	RCC_APB2PeriphClockCmd( RCC_APB2Periph_GPIOB ,ENABLE);	//使能GPIOB时钟
	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9| GPIO_Pin_10| GPIO_Pin_11| GPIO_Pin_12; //GPIOB9,10,11,12
	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;   //推挽输出
	GPIO_Init(GPIOB, &GPIO_InitStructure);//初始化
}

/*****************************************************************************
 * @name       :void LCD_RESET(void)
 * @date       :2018-08-09 
 * @function   :Reset LCD screen
 * @parameters :None
 * @retvalue   :None
******************************************************************************/	
void LCD_RESET(void)
{
	LCD_RST_CLR;
	delay_ms(100);	
	LCD_RST_SET;
	delay_ms(50);
}

/*****************************************************************************
 * @name       :void LCD_RESET(void)
 * @date       :2018-08-09 
 * @function   :Initialization LCD screen
 * @parameters :None
 * @retvalue   :None
******************************************************************************/	 	 
void LCD_Init(void)
{  
	SPI2_Init(); //硬件SPI2初始化
	LCD_GPIOInit();//LCD GPIO初始化										 
 	LCD_RESET(); //LCD 复位
//*************2.8inch ILI9341初始化**********//	
	LCD_WR_REG(0xCF);  
	LCD_WR_DATA(0x00); 
	LCD_WR_DATA(0xC9); //C1 
	LCD_WR_DATA(0X30); 
	LCD_WR_REG(0xED);  
	LCD_WR_DATA(0x64); 
	LCD_WR_DATA(0x03); 
	LCD_WR_DATA(0X12); 
	LCD_WR_DATA(0X81); 
	LCD_WR_REG(0xE8);  
	LCD_WR_DATA(0x85); 
	LCD_WR_DATA(0x10); 
	LCD_WR_DATA(0x7A); 
	LCD_WR_REG(0xCB);  
	LCD_WR_DATA(0x39); 
	LCD_WR_DATA(0x2C); 
	LCD_WR_DATA(0x00); 
	LCD_WR_DATA(0x34); 
	LCD_WR_DATA(0x02); 
	LCD_WR_REG(0xF7);  
	LCD_WR_DATA(0x20); 
	LCD_WR_REG(0xEA);  
	LCD_WR_DATA(0x00); 
	LCD_WR_DATA(0x00); 
	LCD_WR_REG(0xC0);    //Power control 
	LCD_WR_DATA(0x1B);   //VRH[5:0] 
	LCD_WR_REG(0xC1);    //Power control 
	LCD_WR_DATA(0x00);   //SAP[2:0];BT[3:0] 01 
	LCD_WR_REG(0xC5);    //VCM control 
	LCD_WR_DATA(0x30); 	 //3F
	LCD_WR_DATA(0x30); 	 //3C
	LCD_WR_REG(0xC7);    //VCM control2 
	LCD_WR_DATA(0XB7); 
	LCD_WR_REG(0x36);    // Memory Access Control 
	LCD_WR_DATA(0x08); 
	LCD_WR_REG(0x3A);   
	LCD_WR_DATA(0x55); 
	LCD_WR_REG(0xB1);   
	LCD_WR_DATA(0x00);   
	LCD_WR_DATA(0x1A); 
	LCD_WR_REG(0xB6);    // Display Function Control 
	LCD_WR_DATA(0x0A); 
	LCD_WR_DATA(0xA2); 
	LCD_WR_REG(0xF2);    // 3Gamma Function Disable 
	LCD_WR_DATA(0x00); 
	LCD_WR_REG(0x26);    //Gamma curve selected 
	LCD_WR_DATA(0x01); 
	LCD_WR_REG(0xE0);    //Set Gamma 
	LCD_WR_DATA(0x0F); 
	LCD_WR_DATA(0x2A); 
	LCD_WR_DATA(0x28); 
	LCD_WR_DATA(0x08); 
	LCD_WR_DATA(0x0E); 
	LCD_WR_DATA(0x08); 
	LCD_WR_DATA(0x54); 
	LCD_WR_DATA(0XA9); 
	LCD_WR_DATA(0x43); 
	LCD_WR_DATA(0x0A); 
	LCD_WR_DATA(0x0F); 
	LCD_WR_DATA(0x00); 
	LCD_WR_DATA(0x00); 
	LCD_WR_DATA(0x00); 
	LCD_WR_DATA(0x00); 		 
	LCD_WR_REG(0XE1);    //Set Gamma 
	LCD_WR_DATA(0x00); 
	LCD_WR_DATA(0x15); 
	LCD_WR_DATA(0x17); 
	LCD_WR_DATA(0x07); 
	LCD_WR_DATA(0x11); 
	LCD_WR_DATA(0x06); 
	LCD_WR_DATA(0x2B); 
	LCD_WR_DATA(0x56); 
	LCD_WR_DATA(0x3C); 
	LCD_WR_DATA(0x05); 
	LCD_WR_DATA(0x10); 
	LCD_WR_DATA(0x0F); 
	LCD_WR_DATA(0x3F); 
	LCD_WR_DATA(0x3F); 
	LCD_WR_DATA(0x0F); 
	LCD_WR_REG(0x2B); 
	LCD_WR_DATA(0x00);
	LCD_WR_DATA(0x00);
	LCD_WR_DATA(0x01);
	LCD_WR_DATA(0x3f);
	LCD_WR_REG(0x2A); 
	LCD_WR_DATA(0x00);
	LCD_WR_DATA(0x00);
	LCD_WR_DATA(0x00);
	LCD_WR_DATA(0xef);	 
	LCD_WR_REG(0x11); //Exit Sleep
	delay_ms(120);
	LCD_WR_REG(0x29); //display on		

  LCD_direction(USE_HORIZONTAL);//设置LCD显示方向
	LCD_LED=1;//点亮背光	 
	LCD_Clear(WHITE);//清全屏白色
}
 
/*****************************************************************************
 * @name       :void LCD_SetWindows(u16 xStar, u16 yStar,u16 xEnd,u16 yEnd)
 * @date       :2018-08-09 
 * @function   :Setting LCD display window
 * @parameters :xStar:the bebinning x coordinate of the LCD display window
								yStar:the bebinning y coordinate of the LCD display window
								xEnd:the endning x coordinate of the LCD display window
								yEnd:the endning y coordinate of the LCD display window
 * @retvalue   :None
******************************************************************************/ 
void LCD_SetWindows(u16 xStar, u16 yStar,u16 xEnd,u16 yEnd)
{	
	LCD_WR_REG(lcddev.setxcmd);	
	LCD_WR_DATA(xStar>>8);
	LCD_WR_DATA(0x00FF&xStar);		
	LCD_WR_DATA(xEnd>>8);
	LCD_WR_DATA(0x00FF&xEnd);

	LCD_WR_REG(lcddev.setycmd);	
	LCD_WR_DATA(yStar>>8);
	LCD_WR_DATA(0x00FF&yStar);		
	LCD_WR_DATA(yEnd>>8);
	LCD_WR_DATA(0x00FF&yEnd);

	LCD_WriteRAM_Prepare();	//开始写入GRAM			
}   

/*****************************************************************************
 * @name       :void LCD_SetCursor(u16 Xpos, u16 Ypos)
 * @date       :2018-08-09 
 * @function   :Set coordinate value
 * @parameters :Xpos:the  x coordinate of the pixel
								Ypos:the  y coordinate of the pixel
 * @retvalue   :None
******************************************************************************/ 
void LCD_SetCursor(u16 Xpos, u16 Ypos)
{	  	    			
	LCD_SetWindows(Xpos,Ypos,Xpos,Ypos);	
} 

/*****************************************************************************
 * @name       :void LCD_direction(u8 direction)
 * @date       :2018-08-09 
 * @function   :Setting the display direction of LCD screen
 * @parameters :direction:0-0 degree
                          1-90 degree
													2-180 degree
													3-270 degree
 * @retvalue   :None
******************************************************************************/ 
void LCD_direction(u8 direction)
{ 
			lcddev.setxcmd=0x2A;
			lcddev.setycmd=0x2B;
			lcddev.wramcmd=0x2C;
	switch(direction){		  
		case 0:						 	 		
			lcddev.width=LCD_W;
			lcddev.height=LCD_H;		
			LCD_WriteReg(0x36,(1<<3)|(0<<6)|(0<<7));//BGR==1,MY==0,MX==0,MV==0
		break;
		case 1:
			lcddev.width=LCD_H;
			lcddev.height=LCD_W;
			LCD_WriteReg(0x36,(1<<3)|(0<<7)|(1<<6)|(1<<5));//BGR==1,MY==1,MX==0,MV==1
		break;
		case 2:						 	 		
			lcddev.width=LCD_W;
			lcddev.height=LCD_H;	
			LCD_WriteReg(0x36,(1<<3)|(1<<6)|(1<<7));//BGR==1,MY==0,MX==0,MV==0
		break;
		case 3:
			lcddev.width=LCD_H;
			lcddev.height=LCD_W;
			LCD_WriteReg(0x36,(1<<3)|(1<<7)|(1<<5));//BGR==1,MY==1,MX==0,MV==1
		break;	
		default:break;
	}		
}	 
