withlib.c

c8051f040中液晶屏初始化配置程序和显示程序例程

/////////withlib.c//////////////////
#include "mylcd.h"
#include "stdio.h"
extern bit isline0;
void dispini(){	//lcd显示初始化
	delay1ms(100);
	SFRPAGE=0xf;
	lcdcs=0;         
	lcdrs=1;
	lcdrw=1;
	delay1ms(30);
	sendc(0x38);//8位,2行,5*7字体
	delay1ms(100);
	sendc(0x0c);//显示开,光标关;不闪
	delay1ms(100);
	sendc(0x06);//增量方式,现不移动
	delay1ms(100);
	sendc(0x01);//清屏
	delay1ms(100);
}
void config (void) {
//看门狗禁止
    WDTCN = 0x07;	
    WDTCN = 0xDE;   
    WDTCN = 0xAD;
    SFRPAGE = 0x0F;
    XBR0 = 0x00;	
    XBR1 = 0x00;	
    XBR2 = 0x40;	//交叉开关使能，使得P0-P3口能输出
    XBR3 = 0x00;    
    SFRPAGE = 0x0F;
    P0MDOUT = 0x00; //端口配置，P0-P3，P6-P7口为开漏输出
    P1MDOUT = 0x00; 
    P2MDOUT = 0x00; 
    P3MDOUT = 0x00; 
    P4MDOUT = 0x00; //P4口为开漏
    P5MDOUT = 0x07; 
    P6MDOUT = 0x00; 
    P7MDOUT = 0x00; 
    P1MDIN = 0xFF;  //所有端口为数字输入，没有模拟输入端口
    P2MDIN = 0xFF;  
    P3MDIN = 0xFF; 
    SFRPAGE = 0x0F;
    CLKSEL = 0x00;  
    OSCXCN = 0x00;	
    OSCICN = 0x84;	
    //采用内部晶振，为24.5MHZ8分频
}   

main(){
	xdata uchar menuval;
	xdata int kk=-345;
	xdata float t=3.14159;
	config();
	dispini();
	isline0=1;//利用此位可以控制预显示内容所在行
	while(1){
		printf("\nk=%d",kk);//显示int型数据
		printf("\nt=%.3f",t);//显示3位小数
		kk+=1;
		t+=0.2;
		delay1ms(500);
	}
}