tft.c

冷火MCF52255开发板精华资料

#include "TFT.h"


#define TFT_RES MCF_GPIO_PORTTJ_PORTTJ5
#define TFT_RS 	MCF_GPIO_PORTTJ_PORTTJ0
#define TFT_SDA MCF_GPIO_PORTTJ_PORTTJ1
#define TFT_SCK MCF_GPIO_PORTTJ_PORTTJ2
#define TFT_CS 	MCF_GPIO_PORTTJ_PORTTJ3	

#define TFT_RES_1 	MCF_GPIO_PORTTJ|=TFT_RES	
#define TFT_RS_1 	MCF_GPIO_PORTTJ|=TFT_RS
#define TFT_SDA_1 	MCF_GPIO_PORTTJ|=TFT_SDA
#define TFT_SCK_1 	MCF_GPIO_PORTTJ|=TFT_SCK
#define TFT_CS_1 	MCF_GPIO_PORTTJ|=TFT_CS

#define TFT_RES_0 	MCF_GPIO_PORTTJ&=~TFT_RES	
#define TFT_RS_0 	MCF_GPIO_PORTTJ&=~TFT_RS
#define TFT_SDA_0 	MCF_GPIO_PORTTJ&=~TFT_SDA
#define TFT_SCK_0 	MCF_GPIO_PORTTJ&=~TFT_SCK
#define TFT_CS_0 	MCF_GPIO_PORTTJ&=~TFT_CS

#define Du MCF_GPIO_PORTUC_PORTUC0 	//段选锁存器控制端
#define We MCF_GPIO_PORTUC_PORTUC1 	//位选锁存器控制端

#define Du_1 MCF_GPIO_PORTUC=Du 	//段选锁存器控制端置1
#define We_1 MCF_GPIO_PORTUC=We 	//位选锁存器控制端置1

#define Du_0 MCF_GPIO_PORTUC=0 	//段选锁存器控制端置0
#define We_0 MCF_GPIO_PORTUC=0 	//位选锁存器控制端置0


void  write_command(uchar data)
{

	uchar i;
	Du_1;
	TFT_CS_0;
	TFT_RS_0;
	for(i=0;i<8;i++)
	{
		if(data&0x80){TFT_SDA_1;}
	    else{TFT_SDA_0;}
	    TFT_SCK_0; 
	    //asm("nop");		
		TFT_SCK_1;                  
	    data<<=1;    
	}

	TFT_CS_1;
	Du_0;
      
}

void  write_data(uchar data)
{

	uchar i;
	Du_1;
	TFT_CS_0;
	TFT_RS_1;
	for(i=0;i<8;i++)
	{
		if(data&0x80){TFT_SDA_1;}
	    else{TFT_SDA_0;}
	    TFT_SCK_0; 
	    //asm("nop");		
		TFT_SCK_1;                  
	    data<<=1;    
	}

	TFT_CS_1;
	Du_0;
}

void LCD_DataWrite(uchar LCD_DataH,uchar LCD_DataL)
{
	write_data(LCD_DataH);
	write_data(LCD_DataL);
}

void Reset()
{
	We_1;
    TFT_RES_0;
    delay(100);
    TFT_RES_1;
    delay(100);
    We_0;
}
//////////////////////////////////////////////////////////////////////////////////////////////

void TFT_init()
{

	Reset();
 
//------------------------------------------------------------------//  
//-------------------Software Reset-------------------------------//
//------------------------------------------------------------------//




write_command(0x11); //Sleep out
delay (120); //Delay 120ms
//------------------------------------ST7735S Frame Rate-----------------------------------------//
write_command(0xB1);
write_data(0x05);
write_data(0x3C);
write_data(0x3C);
write_command(0xB2);
write_data(0x05);
write_data(0x3C);
write_data(0x3C);
write_command(0xB3);
write_data(0x05);
write_data(0x3C);
write_data(0x3C);
write_data(0x05);
write_data(0x3C);
write_data(0x3C);
//------------------------------------End ST7735S Frame Rate-----------------------------------------//
write_command(0xB4); //Dot inversion
write_data(0x03);
write_command(0xC0);
write_data(0x28);
write_data(0x08);
write_data(0x04);
write_command(0xC1);
write_data(0XC0);
write_command(0xC2);
write_data(0x0D);
write_data(0x00);
write_command(0xC3);
write_data(0x8D);
write_data(0x2A);
write_command(0xC4);
write_data(0x8D);
write_data(0xEE);