4094.c

ht1621b,的PIC的程序,用IO口来通信

const char TABLE[]={0xFC,0x60,0xDA,0xF2,0x66,0xB6,0xBE,0xE0,//0-7
					0xFE,0xF6,0xEE,0x3E,0x9C,0x7A,0x9E,0x8E,//8-F
					0xFD,0x61,0xDB,0xF3,0x67,0xB7,0xBF,0xE1,//0.-7.
					0xFF,0xF7,0xEF,0x3F,0x9D,0x7B,0x9F,0x8F,//8.-F.
					0x00,0x02,0xB6,0x6E,0x9C,0x0A,0x70,0x9E,//灭,-,S,H,C,R,J,E
					0xCE,0x7C,0x1C,0x7B,0x00,0x00,0x00,0x00, //P,U,L
					};


void led1w(char DATA,char ADD)//显示1位数码管
{
	char j;
	char i=2;
	while(i>0)
	{
		i--;
		j=8;
		while(j>0)
		{
			j--;
			DATA>>= 1;
			if(CARRY)
			DAT=0;
			else
			DAT=1;
			asm("nop");
			asm("nop");
			asm("nop");
			SHCP=0;
			asm("nop");
			asm("nop");
			asm("nop");
			SHCP=1;
		}
		DATA=ADD;
		j=8;
	}
		STCP=0;
		asm("nop");
		asm("nop");
		asm("nop");
		STCP=1;
 }

void display(void)
{	
	led1w(0,0);
	switch(SMGWZ++)
	{
		case 0: led1w(TABLE[SMG[5]],0x10);break;
		case 1: led1w(TABLE[SMG[4]],0x08);break;
		case 2: led1w(TABLE[SMG[3]],0x04);break;
		case 3: led1w(TABLE[SMG[2]],0x80);break;
		case 4: led1w(TABLE[SMG[1]],0x40);break;
		case 5: led1w(TABLE[SMG[0]],0x20);break;
		case 6: led1w(LED,0x02);break;
		case 7: SMGWZ=255;break;
	}
}