TFT line drawing program

When I first came into contact with the TFT video screen, I was indeed afraid of it, but Han Shi insisted on learning it; in the end, when I used it to mark points, all problems were solved ! ! Because if you know how to mark points, you can also draw lines, and if you know how to draw lines, you can also draw your own coordinate system! ! It’s the same as before, the more advanced the peripheral equipment is, it will have its own set of drivers when it leaves the factory! As long as you master it, you can operate it without having to write a program! !

   So in a sense, it is easier to play with TFT than with four-digit digital tubes! ! It is true! You can only experience the fun of it by doing it yourself! 

#include
#define   uint unsigned int
#define uchar unsigned char
#define   TYPE_LCD_DATA   1
#define   TYPE_LCD_COMMAND  0
#define   LCD_SIZE_X   128
#define   LCD_SIZE_Y   160
#define   DATA    P0

sbit LCD_RST   = P2^7;     //RST pin definition
sbit LCD_RD    = P3^2;   //RD   pin definition
sbit LCD_WR    = P3^3;   //WR   pin definition
sbit LCD_RS    = P2^5;   //RS   pin definition
sbit LCD_CS    = P2^6;   //CS   pin definition

// If you want to play with any peripheral device, you must first understand the function of its pins, so that you can transplant the code at will and operate it according to your own requirements! !

//Most of the following functions are TFT driving functions, and they all have their own functional annotations. You can use them after understanding the functions! !
uint colors[]=
{
  0xf800,0x07e0,0x001f,0xffe0,0x0000,0x07ff,0xf81f,0xffff
};

void delay_ms(uint ms)
{
  unsigned char k;

  while (ms--)
  {
    for (k = 0; k < 228; k++)
      ;
  }
}

void LCD_Write(uchar type, uint value) 
{
 LCD_CS = 0;
 LCD_RS   = type;       // 0: command     1: data
 
 LCD_WR   = 0;
 DATA   = (uchar)value;;
 LCD_WR   = 1;
 LCD_CS = 1;
}

 

void LCD_Wirte_Data16(uint value)     // color data
{
 LCD_CS = 0;
    LCD_RS   = 1;
 LCD_WR   = 0;
 DATA   = (uchar)value;
 LCD_WR   = 1;
 LCD_WR   = 0;
 DATA   = (uchar)(value>>8)  ;
 LCD_WR   = 1;
 LCD_CS = 1;
}

void Reg_Write(uint reg,uint value)
{
   LCD_Write(TYPE_LCD_COMMAND,reg);
   LCD_Write(TYPE_LCD_DATA,value);
}

void LCD_SetRamAddr(uint xStart, uint xEnd, uint yStart, uint yEnd)
{
    Reg_Write(0x09, xStart);
    Reg_Write(0x10, yStart);
    Reg_Write(0x11, xEnd);
    Reg_Write(0x12, yEnd);
    Reg_Write(0x18, xStart) ;
 Reg_Write(0x19, yStart);
    LCD_Write(TYPE_LCD_COMMAND,0x22);   // 0x22
}

void LCD_init(void)
{ 
 uint num;
 Reg_Write(0x0001,0x0002);   //MODE_SEL1
 Reg_Write(0x0002,0x0012);    //MODE_SEL2
 Reg_Write(0x0003,0x0000);    //MODE_SEL3
 Reg_Write(0x0004,0x0010);  //MODE_SEL3
 LCD_SetRamAddr (0,127, 0,159);
 for(num=20480;num>0;num--)
    LCD_Wirte_Data16(0xffff);
  
 Reg_Write(0x0005,0x0008);    //VCO_MODE 
 Reg_Write(0x0007,0x007f);  //VCOMHT_CTRL
 Reg_Write(0x0008,0x0017 );    //VCOMLT_CTRL      
 Reg_Write(0x0009,0x0000);    //write SRAM window start X point
 Reg_Write(0x0010,0x0000);    //write SRAM window start y point Reg_Write
 (0x0011,0x0083);    //write SRAM window end
 0x0012,0x009f);    //write SRAM window end y point
 Reg_Write(0x0017,0x0000);    //SRAM contrl
 Reg_Write(0x0018,0x0000);    //SRAM x position
 Reg_Write(0x0019,0x0000);    //SRAM y position
 Reg_Write( 0x0006,0x00c5);    //DAC_OP_CTRL2
 delay_ms(10); //Delay

}

void   LCD_clear(uchar n)
{
   uint num;
  
   LCD_SetRamAddr(0,127, 0,159);

   for(num=20480;num>0;num--)           //160*128=20480
   {
     LCD_Wirte_Data16(colors[n]);
   }
}
//====================================================================
//Set the current display coordinates
//Entry parameters: x, y are the current display coordinates.
//Exit parameters: None
//Description: This function is actually a special case of LCD_setwindow function. The display window is the smallest, only one pixel.
void LCD_setxy(unsigned char x,unsigned int y)
{
 LCD_SetRamAddr(x,y,x,y); 
}

void GUI_Point(uchar x, uint y, uint n)
{ 
 LCD_setxy(x,y);
  LCD_Wirte_Data16(colors[n]);
}
void main()
{
  uint num;
  P2 = 0xff;
     P0 = 0xff;
 LCD_init();
  while(1)
  {    
    LCD_SetRamAddr(50,100, 50,50);
       for(num=2500;num>0;num--)           //160*128=20480
       {
       LCD_Wirte_Data16(colors[2]);//For example, this function only needs to know that it is used to set the color of the point, and its parameter is colors[]
       }
  }
}