8255a.c

KeilC51开发,51单片机与E2PROM的接口程序,并且有串口与液晶的输出.

#include <reg51.h>
#include <8255A.h>

sbit RST = P1^4;

void Init8255A()
{
	int i;

    i = 30000;
	RST = 1;
	while (i--);
	RST = 0;
	SelectForm0(0,0,0,0);	
}

void SelectForm0(char A, char C1, char C2, char B)
{
	char temp;

	temp = 0x80;
	temp = temp | (A<<4) | (C1<<3) | (C2<<2) | (B<<1);
	Commd = temp;
}

void SetCBit(char index, bit value)
{
	char temp;

	temp = index << 1;
	if (value) temp++;
	Commd = temp;
}

void SelectForm1()
{
		


}

void SelectForm2()
{



}