开源Mega8玩转SPI接口TFT彩屏

做了个spi接口的TFT彩屏的转接板 在上面顺便放了个MEGA8以及USB接口 mega8的引脚几乎都引出来了
自己觉得SPI接口的彩屏很有玩头 准备全部开源 欢迎拍砖 以便于提高一下自己的软硬件水平

最简单的屏的DEMO代码

RGB3基色显示

//ICC-AVRapplicationbuilder:2008-11-211:21:49
//Target:M8
//Crystal:8.0000Mhz

#includeiom8v.h>
#includemacros.h>

//Signalbitdefinitions
#definelcd_cs3//PB3
#definelcd_rst2//PB2
#definelcd_cd4//PB4
#definelcd_dta4//PC4
#definelcd_clk5//PC5
#defineSetLcdA0PORTB|=(1lcd_cd);
#defineClrLcdA0PORTB=~(1lcd_cd);
#defineSetLcdWRPORTC|=(1lcd_clk);
#defineClrLcdWRPORTC=~(1lcd_clk);
#defineSetledPORTB|=(15);
#defineClrledPORTB=~(15);
#defineSetLcdRSTPORTB|=(1lcd_rst);
#defineClrLcdRSTPORTB=~(1lcd_rst);
#defineSetLcdCSPORTB|=(1lcd_cs);
#defineClrLcdCSPORTB=~(1lcd_cs);
#defineSetLcdSdataPORTC|=(1lcd_dta);
#defineClrLcdSdataPORTC=~(1lcd_dta);



voidport_init(void)
{
PORTB=0x00;
DDRB=0xFF;
PORTC=0x00;//m103outputonly
DDRC=0x7F;
PORTD=0x00;
DDRD=0xFF;
}

//callthisroutinetoinitializeallperipherals
voidinit_devices(void)
{
//stoperrantinterruptsuntilsetup
CLI();//disableallinterrupts
port_init();

MCUCR=0x00;
GICR=0x00;
TIMSK=0x00;//timerinterruptsources
SEI();//re-enableinterrupts
//allperipheralsarenowinitialized
}
voidDelay_1us(void)//1us延时函数
{
asm("nop");
}
voidDelay_nus(unsignedintn)//Nus延时函数
{
unsignedinti=0;
for(i=0;in;i++)
Delay_1us();
}
voidDelay_1ms(void)//1ms延时函数
{
unsignedinti;
for(i=0;i1140;i++);
}
voidDelay_nms(unsignedintn)//Nms延时函数
{
unsignedinti=0;
for(i=0;in;i++)
Delay_1ms();
}

voidwrite_data(unsignedchardata)
{
unsignedchari;

SetLcdA0;
ClrLcdCS;
for(i=0;i8;i++)
{
if(data>=0x80)
{SetLcdSdata;}
else{ClrLcdSdata;}
ClrLcdWR;
asm("nop");
SetLcdWR;
data=1;

}

SetLcdCS;

}
voidwrite_data16(unsignedchardata,unsignedchardataL)
{
unsignedchari;

SetLcdA0;
ClrLcdCS;

for(i=0;i8;i++)
{
if(data>=0x80)
{SetLcdSdata;}
else{ClrLcdSdata;}
ClrLcdWR;
asm("nop");
SetLcdWR;
data=1;

}


SetLcdCS;
//Delay_nus(100);

SetLcdA0;
ClrLcdCS;

for(i=0;i8;i++)
{
if(dataL>=0x80)
{SetLcdSdata;}
else{ClrLcdSdata;}
ClrLcdWR;
asm("nop");
SetLcdWR;
dataL=1;

}
SetLcdCS;
}
voidwrite_cmd(unsignedchardata)
{
unsignedchari;
ClrLcdA0;
ClrLcdCS;
for(i=0;i8;i++)
{
if(data>=0x80)
{SetLcdSdata;}
else{ClrLcdSdata;}
ClrLcdWR;
asm("nop");
SetLcdWR;
data=1;

}
SetLcdCS;

}




//
voidmain(void)
{unsignedinti,j;
init_devices();
Clrled;
//insertyourfunctionalcodehere...
Delay_nms(100);
ClrLcdRST;
Delay_nms(5);
SetLcdRST;

{
Delay_nms(100);

write_cmd(0x10);
write_data16(0x2f,0x8e);

write_cmd(0x11);
write_data16(0x00,0x0c);


write_cmd(0x07);
write_data16(0x00,0x21);

write_cmd(0x28);
write_data16(0x00,0x06);

write_cmd(0x28);
write_data16(0x00,0x05);


write_cmd(0x27);
write_data16(0x05,0x7f);

write_cmd(0x29);
write_data16(0x89,0xa1);

write_cmd(0x00);
write_data16(0x00,0x01);
Delay_nms(100);

write_cmd(0x29);
write_data16(0x80,0xb0);
Delay_nms(30);
write_cmd(0x29);
write_data16(0xff,0xfe);

write_cmd(0x07);
write_data16(0x00,0x23);
Delay_nms(30);
write_cmd(0x07);
write_data16(0x00,0x33);

write_cmd(0x01);
write_data16(0x21,0x83);

write_cmd(0x2f);
write_data16(0xff,0xff);

write_cmd(0x2c);
write_data16(0x80,0x00);

write_cmd(0x03);
write_data16(0x68,0x30);//6830

write_cmd(0x27);
write_data16(0x05,0x70);

write_cmd(0x02);
write_data16(0x03,0x00);

write_cmd(0x0b);
write_data16(0x58,0x0c);

write_cmd(0x12);
write_data16(0x06,0x09);

write_cmd(0x13);
write_data16(0x31,0x00);

write_cmd(0x2a);
write_data16(0x1d,0xd0);

write_cmd(0x2b);
write_data16(0x0a,0x90);

write_cmd(0x2d);
write_data16(0x31,0x0f);
Delay_nms(100);

//write_cmd(0x10);
//write_data16(0x2f,0x8e);

//write_cmd(0x11);
//write_data16(0x00,0x0c);
write_cmd(0x45);
write_data16(0x83,0x00);
write_cmd(0x44);
write_data16(0x83,0x00);

write_cmd(0x21);
write_data16(0x00,0x00);
write_cmd(0x1e);
write_data16(0x00,0xbf);

Delay_nms(1);
write_cmd(0x1e);
write_data16(0x00,0x00);
Delay_nms(100);
write_cmd(0x45);
write_data16(0x83,0x00);
write_cmd(0x44);
write_data16(0x83,0x00);

write_cmd(0x21);
write_data16(0x00,0x00);
write_cmd(0x22);//writedatatoGRAM
Setled;
while(1)
{
write_cmd(0x45);
write_data16(0x83,0x00);
write_cmd(0x44);
write_data16(0x83,0x00);

write_cmd(0x21);
write_data16(0x00,0x00);
write_cmd(0x22);//writedatatoGRAM
for(i=0;i17500;i++)
{write_data(0xf8);
write_data(0x00);}
Delay_nms(5000);
write_cmd(0x45);
write_data16(0x83,0x00);
write_cmd(0x44);
write_data16(0x83,0x00);

write_cmd(0x21);
write_data16(0x00,0x00);
write_cmd(0x22);//writedatatoGRAM

for(i=0;i17500;i++)
{write_data(0x07);
write_data(0xe0);}
Delay_nms(5000);

write_cmd(0x45);
write_data16(0x83,0x00);
write_cmd(0x44);
write_data16(0x83,0x00);

write_cmd(0x21);
write_data16(0x00,0x00);
write_cmd(0x22);//writedatatoGRAM

for(i=0;i17500;i++)
{write_data(0x00);
write_data(0x1f);}
Delay_nms(5000);
}

}
}