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/*******************************************

     2.4寸 QVGA显示驱动

**********************************************/
#include "fsmc_sram.h"
#include "tftlcd.h"
#include "font.h"  

#define Bank1_LCD_D    ((uint32_t)0x60020000)    //disp Data ADDR
#define Bank1_LCD_C    ((uint32_t)0x60000000)  //disp Reg ADDR

unsigned long color1=0;
//void MUC_Init();
void LCD_Init(void);
void LCD_WR_REG(unsigned int index);
void LCD_WR_CMD(unsigned int index,unsigned int val);

void LCD_WR_Data(unsigned int val);
void LCD_WR_Data_8(unsigned int val);
void LCD_test(void); 
void LCD_clear(unsigned int p);
void ini(void);

void lcd_wr_zf(unsigned int a, unsigned int b, unsigned int a1,unsigned int b1, unsigned int d,unsigned int e, unsigned char g, unsigned char *f);
void lcd_wr_pixel(unsigned int a, unsigned int b, unsigned int e) ;
unsigned char *num_pub(unsigned int a);

unsigned int color[]={0xf800,0x07e0,0x001f,0xffe0,0x0000,0xffff,0x07ff,0xf81f};
extern unsigned char zm9[];
extern unsigned char zm8[];
extern unsigned char zm7[];
extern unsigned char zm6[];
extern unsigned char zm5[];
extern unsigned char zm4[];
extern unsigned char zm3[];
extern unsigned char zm2[];
extern unsigned char zm1[];
extern unsigned char zm0[];
extern unsigned char a1[];
extern unsigned char a2[];
extern unsigned char zf2[];
extern unsigned char zf3[]; 

u16 POINT_COLOR=RED;     //默认红色 

unsigned int LCD_RD_data(void);

extern void lcd_rst(void);
extern void Delay(__IO uint32_t nCount);

//写寄存器地址函数
void LCD_WR_REG(unsigned int index)
{
 *(__IO uint16_t *) (Bank1_LCD_C)= index;

}

//写寄存器数据函数
//输入：dbw 数据位数，1为16位，0为8位。
void LCD_WR_CMD(unsigned int index,unsigned int val)
{ 
 *(__IO uint16_t *) (Bank1_LCD_C)= index; 
 *(__IO uint16_t *) (Bank1_LCD_D)= val;
}

unsigned int LCD_RD_data(void){
 unsigned int a=0;
 //a=(*(__IO uint16_t *) (Bank1_LCD_D));  //Dummy
 //a= *(__IO uint16_t *) (Bank1_LCD_D);   //H
 //a=a<<8;
 a=*(__IO uint16_t *) (Bank1_LCD_D); //L

 return(a); 
}

//写16位数据函数
void    LCD_WR_Data(unsigned int val)
{  
 *(__IO uint16_t *) (Bank1_LCD_D)= val;  
}

void LCD_WR_Data_8(unsigned int val)
{
 *(__IO uint16_t *) (Bank1_LCD_D)= val;
}

//初始化函数
void LCD_Init(void)
{
 lcd_rst(); 

 LCD_WR_CMD(0x00E3, 0x3008); // Set internal timing
 LCD_WR_CMD(0x00E7, 0x0012); // Set internal timing
 LCD_WR_CMD(0x00EF, 0x1231); // Set internal timing
 LCD_WR_CMD(0x0000, 0x0001); // Start Oscillation
 LCD_WR_CMD(0x0001, 0x0100); // set SS and SM bit
 LCD_WR_CMD(0x0002, 0x0700); // set 1 line inversion

 LCD_WR_CMD(0x0003, 0x1030); // set GRAM write direction and BGR=0,262K colors,1 transfers/pixel.
 LCD_WR_CMD(0x0004, 0x0000); // Resize register
 LCD_WR_CMD(0x0008, 0x0202); // set the back porch and front porch
 LCD_WR_CMD(0x0009, 0x0000); // set non-display area refresh cycle ISC[3:0]
 LCD_WR_CMD(0x000A, 0x0000); // FMARK function
 LCD_WR_CMD(0x000C, 0x0000); // RGB interface setting
 LCD_WR_CMD(0x000D, 0x0000); // Frame marker Position
 LCD_WR_CMD(0x000F, 0x0000); // RGB interface polarity
//Power On sequence
 LCD_WR_CMD(0x0010, 0x0000); // SAP, BT[3:0], AP, DSTB, SLP, STB
 LCD_WR_CMD(0x0011, 0x0007); // DC1[2:0], DC0[2:0], VC[2:0]
 LCD_WR_CMD(0x0012, 0x0000); // VREG1OUT voltage
 LCD_WR_CMD(0x0013, 0x0000); // VDV[4:0] for VCOM amplitude
 Delay(200); // Dis-charge capacitor power voltage
 LCD_WR_CMD(0x0010, 0x1690); // SAP, BT[3:0], AP, DSTB, SLP, STB
 LCD_WR_CMD(0x0011, 0x0227); // R11h=0x0221 at VCI=3.3V, DC1[2:0], DC0[2:0], VC[2:0]
 Delay(50); // Delay 50ms
 LCD_WR_CMD(0x0012, 0x001C); // External reference voltage= Vci;
 Delay(50); // Delay 50ms
 LCD_WR_CMD(0x0013, 0x1800); // R13=1200 when R12=009D;VDV[4:0] for VCOM amplitude
 LCD_WR_CMD(0x0029, 0x001C); // R29=000C when R12=009D;VCM[5:0] for VCOMH
 LCD_WR_CMD(0x002B, 0x000D); // Frame Rate = 91Hz
 Delay(50); // Delay 50ms
 LCD_WR_CMD(0x0020, 0x0000); // GRAM horizontal Address
 LCD_WR_CMD(0x0021, 0x0000); // GRAM Vertical Address
// ----------- Adjust the Gamma Curve ----------//
 LCD_WR_CMD(0x0030, 0x0007);
 LCD_WR_CMD(0x0031, 0x0302);
 LCD_WR_CMD(0x0032, 0x0105);
 LCD_WR_CMD(0x0035, 0x0206);
 LCD_WR_CMD(0x0036, 0x0808);
 LCD_WR_CMD(0x0037, 0x0206);
 LCD_WR_CMD(0x0038, 0x0504);
 LCD_WR_CMD(0x0039, 0x0007);
 LCD_WR_CMD(0x003C, 0x0105);
 LCD_WR_CMD(0x003D, 0x0808);
//------------------ Set GRAM area ---------------//
 LCD_WR_CMD(0x0050, 0x0000); // Horizontal GRAM Start Address
 LCD_WR_CMD(0x0051, 0x00EF); // Horizontal GRAM End Address
 LCD_WR_CMD(0x0052, 0x0000); // Vertical GRAM Start Address
 LCD_WR_CMD(0x0053, 0x013F); // Vertical GRAM Start Address
 LCD_WR_CMD(0x0060, 0xA700); // Gate Scan Line
 LCD_WR_CMD(0x0061, 0x0001); // NDL,VLE, REV
 LCD_WR_CMD(0x006A, 0x0000); // set scrolling line
//-------------- Partial Display Control ---------//
 LCD_WR_CMD(0x0080, 0x0000);
 LCD_WR_CMD(0x0081, 0x0000);
 LCD_WR_CMD(0x0082, 0x0000);
 LCD_WR_CMD(0x0083, 0x0000);
 LCD_WR_CMD(0x0084, 0x0000);
 LCD_WR_CMD(0x0085, 0x0000);
//-------------- Panel Control -------------------//
 LCD_WR_CMD(0x0090, 0x0010);
 LCD_WR_CMD(0x0092, 0x0000);
 LCD_WR_CMD(0x0093, 0x0003);
 LCD_WR_CMD(0x0095, 0x0110);
 LCD_WR_CMD(0x0097, 0x0000);
 LCD_WR_CMD(0x0098, 0x0000);
 LCD_WR_CMD(0x0007, 0x0133); // 262K color and display ON
   
 //ini();

    LCD_WR_CMD(32, 0);
    LCD_WR_CMD(33, 0x013F);
 *(__IO uint16_t *) (Bank1_LCD_C)= 34;
 for(color1=0;color1<76800;color1++)
 {
   LCD_WR_Data(0xffff);
 }
 color1=0;
 //while(1);     

}

//+++++++++++++++++++++++LCD写字符子程序
void lcd_wr_pixel(unsigned int a, unsigned int b, unsigned int e)   
// X， Y，颜色
{
// LCD_WR_CMD(0x02,a);
// LCD_WR_CMD(0x03,b); 
// LCD_WR_CMD(0x04,239);
// LCD_WR_CMD(0x05,319);  
// LCD_WR_REG(0x0E);

 LCD_WR_CMD(0x20, a);
    LCD_WR_CMD(0x21, b);
 LCD_WR_Data(e);
}
void TFT_CLEAR(u8 x,u16 y,u8 len,u16 wid)
{                   
    u32 n,temp;

 LCD_WR_CMD(0x0050, x); // Horizontal GRAM Start Address
 LCD_WR_CMD(0x0051, x+len-1); // Horizontal GRAM End Address
 LCD_WR_CMD(0x0052, y); // Vertical GRAM Start Address
 LCD_WR_CMD(0x0053, y+wid-1); // Vertical GRAM Start Address
 LCD_WR_REG(34);

 //LCD_WR_CMD(0,0x2,x);//设置到原点
 //LCD_WR_CMD(1,0x3,y);   
 
 //LCD_WR_CMD(0,0x04,x+len-1);//结束列数(0~239) 
 //LCD_WR_CMD(1,0x05,y+wid-1);//结束行数(0~319)  
 
 //LCD_WR_REG(0x0E);
 temp=(u32)len*wid;   
 for(n=0;n<temp;n++)LCD_WR_Data(0xffff);//显示白色
}  
//画点
//x:0~239
//y:0~319
//POINT_COLOR:此点的颜色
void TFT_DrawPoint(u8 x,u16 y)
{

    LCD_WR_CMD(0x0050, x); // Horizontal GRAM Start Address
 LCD_WR_CMD(0x0051, 0x00EF); // Horizontal GRAM End Address
 LCD_WR_CMD(0x0052, y); // Vertical GRAM Start Address
 LCD_WR_CMD(0x0053, 0x013F); // Vertical GRAM Start Address
 LCD_WR_CMD(32, x); // Horizontal GRAM Start Address  
 LCD_WR_CMD(33, y); // Vertical GRAM Start Address
 LCD_WR_REG(34);

 //LCD_WR_CMD(0,0x2,x);//设置到原点
 //LCD_WR_CMD(1,0x3,y);
 //LCD_WR_CMD(0,0x04,0xEF);  //结束列数(0~239) 
 //LCD_WR_CMD(1,0x05,0x013F);//结束行数(0~319)
 //(0x0E);
 LCD_WR_Data(POINT_COLOR);
 //POINT_COLOR++;
}
//取绝对值函数
//位宽:32bit
u32 abs(s32 res)
{
 if(res<0)return -res;
 else return res;
} 
 
//画线
//x1,y1:起点坐标
//x2,y2:终点坐标 
void TFT_DrawLine(u8 x1, u16 y1, u8 x2, u16 y2)
{
    u16 x, y, t;
 if((x1==x2)&&(y1==y2))TFT_DrawPoint(x1, y1);
 else if(abs(y2-y1)>abs(x2-x1))//斜率大于1
 {
  if(y1>y2)
  {
   t=y1;
   y1=y2;
   y2=t;
   t=x1;
   x1=x2;
   x2=t;
  }
  for(y=y1;y<y2;y++)//以y轴为基准
  {
   x=(u32)(y-y1)*(x2-x1)/(y2-y1)+x1;
   TFT_DrawPoint(x, y); 
  }
 }
 else     //斜率小于等于1
 {
  if(x1>x2)
  {
   t=y1;
   y1=y2;
   y2=t;
   t=x1;
   x1=x2;
   x2=t;
  }  
  for(x=x1;x<x2;x++)//以x轴为基准
  {
   y =(u32)(x-x1)*(y2-y1)/(x2-x1)+y1;
   TFT_DrawPoint(x,y);
  }
 }
}
//6*12大小
//在指定位置显示一个字符
//x:0~234
//y:0~308
//num:要显示的字符:" "--->"~"
void TFT_ShowChar(u8 x,u16 y,u8 num)
{      
#define MAX_CHAR_POSX 232
#define MAX_CHAR_POSY 304
    u8 temp;
    u8 pos,t;     
    if(x>MAX_CHAR_POSX||y>MAX_CHAR_POSY)return;
    //设定一个字符所占的大小
    //开辟空间
   
 
 //
 LCD_WR_CMD(0x0050, x); // Horizontal GRAM Start Address
 LCD_WR_CMD(0x0051, x+5); // Horizontal GRAM End Address
 LCD_WR_CMD(0x0052, y); // Vertical GRAM Start Address
 LCD_WR_CMD(0x0053, y+11); // Vertical GRAM Start Address 
 LCD_WR_CMD(32, x);
    LCD_WR_CMD(33, y);
 LCD_WR_REG(34);

 //LCD_WR_CMD(0,0x2,x);//
 //LCD_WR_CMD(1,0x3,y);
 //LCD_WR_CMD(0,0x04,x+5); //结束列数(0~239) 
 //LCD_WR_CMD(1,0x05,y+11);//结束行数(0~319)  
 //LCD_WR_REG(0x0E);         
 
 num=num-' ';//得到偏移后的值
 for(pos=0;pos<12;pos++)
 {
     temp=asc2_1206[num][pos];
     for(t=0;t<6;t++)
     {                
         if(temp&0x01)LCD_WR_Data(POINT_COLOR);
         else LCD_WR_Data(0xffff);//白色   
         temp>>=1;
     }
 }
}   
//m^n函数
u32 mypow(u8 m,u8 n)
{
 u32 result=1; 
 while(n--)result*=m;   
 return result;
}
//显示一个数字
//x,y:起点坐标
//num:数值(0~65536);
void TFT_ShowNum(u8 x,u16 y,u32 num)
{     
 u32 res;      
 u8 t=0,t1=0;  
 res=num;
 if(!num)TFT_ShowChar(x,y,'0');//显示0
 while(res)  //得到数字长度
 {
  res/=10;
  t++;
 }
 t1=t;
 while(t) //显示数字
 {
  res=mypow(10,t-1);  
     TFT_ShowChar(x+(t1-t)*6,y,(num/res)%10+'0');
  t--;
 }        
}
//显示字符串
//x,y:起点坐标 
//*p:字符串起始地址
void TFT_ShowString(u8 x,u16 y,const u8 *p)
{        
    while(*p!='\0')
    {      
        if(x>MAX_CHAR_POSX){x=0;y+=12;}
        if(y>MAX_CHAR_POSY){y=x=0;TFT_CLEAR(0,0,240,320);}
        TFT_ShowChar(x,y,*p);
        x+=6;
        p++;
    } 
}
//显示一副图片
//x,y:图片起始位置
//lenth:图片的宽度(0~240) 
//wide: 图片高度(0~320)
//*p:图片首地址       
//不带范围判断
void TFT_ShowBmp(u8 x,u16 y,u8 lenth,u16 wide,const u8 *p)
{     
    u32 size,temp;
    //开辟窗口

 LCD_WR_CMD(0x0050, x); // Horizontal GRAM Start Address
 LCD_WR_CMD(0x0051, (u16)x+lenth-1); // Horizontal GRAM End Address
 LCD_WR_CMD(0x0052, y); // Vertical GRAM Start Address
 LCD_WR_CMD(0x0053, y+wide-1); // Vertical GRAM Start Address
 LCD_WR_REG(34);

 //LCD_WR_CMD(0,0x2,x);//起始坐标
 //LCD_WR_CMD(1,0x3,y);
 //LCD_WR_CMD(0,0x04,(u16)x+lenth-1);//结束列数(0~239) 
 //LCD_WR_CMD(1,0x05,y+wide-1);      //结束行数(0~319)  
 //LCD_WR_REG(0x0E);      
 temp=(u32)lenth*wide*2;
 for(size=0;size<temp;size++)LCD_WR_Data_8(p[size]);
}