sysinit.c

主要实现在C8051F020的平台上完成在12864液晶OCMG4C8上画正弦函数特性曲线。

#include <c8051f020.h>

#define uchar unsigned char
#define uint unsigned int

void SysInit()
{
	uint i;
	OSCXCN=0x67;
	for (i=0;i<256;i++);
	while(OSCXCN&0x80==0);
		OSCICN=0x88;
    EA=0;
    WDTCN=0xDE;
    WDTCN=0xAD;
    EA=1;
   XBR0=0x00; 
   XBR1=0x00;
   XBR2=0x40;

   P0MDOUT=0xff;
   P2MDOUT=0xff;
   P3MDOUT=0xff ;                    
   P74OUT=0xff;
}