帮我看一下这些代码

只看该作者 · 2008-9-24 10:02

这是一个液晶程序的底层驱动的几个函数,原来在51中可以正常工作,移植到LPC2114上却不行了.
它是16位数据方式,在51中P1输出高8位,P0输出低8位,
在2114中P0.0~P0.15为数据,P0.16~20为控制信号

#define LCD_RST               (1<<20)  //复位
#define LCD_RD        (1<<19)  //读
#define LCD_WR        (1<<18)  //写
#define LCD_RS        (1<<17)  //命令
#define LCD_CE               (1<<16)  //片选

/******************DRIVE IC寄存器寻址 8080 SERIES*******************************/
void write_command(uint8 addr1,uint8 addr2)
{
    IO0CLR = LCD_RS;                //rs=0;
    IO0CLR = LCD_CE ;                  //ce=0;
    IO0SET = LCD_RD;                //rd=1;

    //OutData((addr1<<8)+addr2);
    IO0CLR = 0xffff;
    IO0SET = (addr1<<8)&0xff00;                 //p1=dat1;
    IO0SET = addr2 & 0xff;            //p0=dat2;

    IO0CLR = LCD_WR;                //wr=0;
    IO0SET = LCD_WR;                //wr=1;
    IO0SET = LCD_CE;                //ce=1;
}

/*****************DRIVE IC寄存器写数据 8080 SERIES******************************/
void write_para(uint8 para1,uint8 para2)
{

    IO0SET = LCD_RS;                //rs=1;
    IO0CLR = LCD_CE ;                 //ce=0;
    IO0SET = LCD_RD;                //rd=1;
    //OutData((para1<<8)+para2);
    IO0CLR = 0xffff;
    IO0SET = (para1<<8)&0xff00;                 //p1=para1;
    IO0SET = para2 & 0xff;            //p0=pata2;

    IO0CLR = LCD_WR;                //wr=0;
    IO0SET = LCD_WR;                //wr=1;
    IO0SET = LCD_CE;                //ce=1
}

/****************DRIVE IC GDRAM 写数据 16BITS 8080 SERIES*****************************/
void write_data(uint8 dat1,uint8 dat2)
{
    IO0SET = LCD_RS;                //rs=1;
    IO0CLR = LCD_CE ;                 //ce=0;
    IO0SET = LCD_RD;                //rd=1;

    //OutData((dat1<<8)+dat2);
    IO0CLR = 0xffff;
    IO0SET = (dat1<<8)&0xff00;                 //p1=dat1;
    IO0SET = dat2 & 0xff;            //p0=dat2;

    IO0CLR = LCD_WR;                //wr=0;
     IO0SET = LCD_WR;                //wr=1;
     IO0SET = LCD_CE;                //ce=1
}