液晶12864(st7920控制器)msp430f149驱动

//mcumsp430f149//

//晶振内部dco//

//p43rs//

//p42r/w//

//p41e//

//p40rst//

//p30-p37db//

//===========================================================================//

#include

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

#defineUcharunsignedchar

#defineUintunsignedint

#defineUlongunsignedlong

Ucharbusy,hang,lie;

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

//定义字符串数组*/

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

charSTR2[]="http://www.qfmcu.com";;

charSTR3[]="http://www.mcubbs.net";;

/**************************定义函数原型********************************/

voidDelayus(Ulongilinshi);/*延时函数*/

voidBUSYLOOP();//*判忙函数*//

voidWrite_command(UcharCMD,Ucharbb);//*发控制字函数*//

voidWrite_data(UcharCMD);//*发数据函数*//

voidCHUSHIHUA();//*初始化函数*//

voidCLEAR();//*清屏*//

voidDisplay(Uchar*ptr,Ucharddram);//**显字符串函数**//

/*********************************************延时

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

//voidDelayus(Ulongt)

//{Ulongi,j;

//for(i=0;i//for(j=0;j//;

//}

voidDelayus(Ulongilinshi)

{Ulongii;

for(ii=0;ii}

//*********************判忙函数************************//

voidBUSYLOOP()

{//P1=0x0ff;

//do{

//P4OUT&=0xf7;//RS=0;

//P4OUT|=0x04;//RW=1;

//P4OUT|=0x02;//E=1;

//busy=P3IN;//BUSY=P1;

//P4OUT&=0xfd;//E=0;

//}

//while(busy>0x7f);

Delayus(10);

}

//*********************写控制字函数****************************//

voidWrite_command(UcharCMD,Ucharbb)

{

if(bb)

{BUSYLOOP();}

P4OUT&=0xf7;//RS=0;

P4OUT&=0xfb;//RW=0;

P4OUT|=0x02;//E=1;

P3OUT=CMD;//P1=CMD;

Delayus(10);

P4OUT&=0xfd;//E=0;

}

//*********************写数据函数****************************//

voidWrite_data(UcharCMD)

{BUSYLOOP();

//Delayus(1000);

P4OUT|=0x08;//RS=1;

P4OUT&=0xfb;//RW=0;

P4OUT|=0x02;//E=1;

P3OUT=CMD;//P1=CMD;

Delayus(10);

P4OUT&=0xfd;//E=0;

}

/***************************清屏*************************************/

voidCLEAR()

{P4OUT&=0xf7;//RS=0;

P4OUT&=0xfb;//RW=0;

P4OUT|=0x02;//E=1;

P3OUT=0x01;//P1=0x01;

Delayus(10);

P4OUT&=0xfd;//E=0;

}

//*************************液晶初始化********************************//

voidCHUSHIHUA()

{

Delayus(40000);

Write_command(0x30,0);

Delayus(1500);

Write_command(0x30,0);

Delayus(400);

Write_command(0x0C,1);

Delayus(1500);

Write_command(0x01,1);

Delayus(15000);

Write_command(0x06,1);

}

/*=======================================================

显示字符串

=======================================================*/

voidDisplay(Uchar*ptr,Ucharddram)

{

Ucharl,i1,x;

l=0;

if(ddram<0x88)

{hang=0;}//定位行地址:第一行

elseif(ddram<0x90)

{hang=2;}//定位行地址:第三行

elseif(ddram<0x98)

{hang=1;}//定位行地址:第二行

else

{hang=3;}//定位行地址:第四行

lie=0x0f&ddram;//定位列地址

if(lie>0x07)

{lie=lie-0x08;}

x=lie*2;

Write_command(ddram,0);//定位显示起始地址

while((ptr[l])!="")

{l++;}

for(i1=0;i1{Write_data(ptr[i1]);//输出单个字符

x++;

if(x==0x10)

{x=0;

hang++;

switch(hang)

{

case0:Write_command(0x80,0);

break;

case1:Write_command(0x90,0);

break;

case2:Write_command(0x88,0);

break;

case3:Write_command(0x98,0);

}

if(hang>3)

{

Write_command(0x80,0);

hang=0;

}

}

}

}

/**************************主函数开始***********************************/

main()

{WDTCTL=WDTPW+WDTHOLD;//停止看门狗

DCOCTL=0XE0;//初始化时钟

BCSCTL1=0X86;

BCSCTL2=0X00;

P3DIR=0xff;

P3OUT=0x00;

P4DIR=0x0f;

P4OUT=0x00;

////////////////////////////////

CLEAR();

CHUSHIHUA();//初始化函数//

Display(STR2,0x80);//上面一行显示一个预定字符串

Display(STR3,0x88);

Delayus(200);

Write_command(0x9C,0);//将光标移到0x9C

Write_command(0x0f,0);//光标处反白闪烁

//write_command(0x08,0);//进入睡眠状态

//delayus(200);

//write_command(0x0C,0);//唤醒

while(1)

{;}

}

/*************************主函数结束*************************************/