anjian.c

按键检测及译码处理。实验设备 1． PC计算机； 2． NEC全系列微控制器(单片机)开发工具EM/EZ-1系统

#pragma sfr
void delay( void )					/*旊廃檙晭瘝幁曽*/
{
	int i,j;
	for(i=0;i<=200;i++)
		for(j=0;j<=20;j++);
}
void main( void )
{
	int i;
	/* initialize the port registers */
	P13 = 0x0;					/*弐殠豍130丣P133昻媍LED媏楪拹*/
	P14 = 0x0; 					/*弐殠豍140丣P143昻媍LED媏楪拹*/
	P15 =0x0; 					/*弐殠豍150丣P153昻媍LED媏楪拹*/
	/* initialize the mode registers */
	PM13 = 0xf0;						/*P00丣P03棊〞鈯枑y*/
	PM14 = 0xf0; 					/*P20丣P23棊〞鈯枑y*/
	PM15 = 0xf0; 
	PM4=0xFF;
	PU4=0xFF;
	PM3.3=0;
	P3.3=0x00;
						/*P50丣P07棊〞鈯枑y*/
	while(1)
{
	if(P4==0xFF)
	{
	P13 = 0x0;					/*弐殠豍130丣P133昻媍LED媏楪拹*/
	P14 = 0x0; 					/*弐殠豍140丣P143昻媍LED媏楪拹*/
	P15 =0x0; 					/*弐殠豍150丣P153昻媍LED媏楪拹*/
	
	}
	if(P4==0xFE)
	{	P13 = 0x01;
	    CKS=0b10000000;					/*弐殠豍130丣P133昻媍LED媏媰慲*/
		delay();
		
		P13 = 0x02;	
		CKS=0b11100000;			/*弐殠豍130丣P133昻媍LED媏媰慲*/
		delay();
		
		P13 = 0x04;	
		CKS=0b11000000;				/*弐殠豍130丣P133昻媍LED媏媰慲*/
		delay();
		
		P13 = 0x08;	
		CKS=0b10100000;			/*弐殠豍130丣P133昻媍LED媏媰慲*/
		delay();
					/*檙晭?/
		P13 = 0x0;
		 				/*弐殠豍130丣P133昻媍LED媏楪拹*/
		P14 = 0x01;
		CKS=0b10000000;	 				/*弐殠豍140丣P143昻媍LED媏媰慲*/
		delay();
		P14 = 0x02;
		CKS=0b11000000;	 				/*弐殠豍140丣P143昻媍LED媏媰慲*/
		delay();
		P14 = 0x04;
		CKS=0b11100000;	 				/*弐殠豍140丣P143昻媍LED媏媰慲*/
		delay();
		P14 = 0x08;
		CKS=0b10100000;	 				/*弐殠豍140丣P143昻媍LED媏媰慲*/
		delay();				/*檙晭?/
						/*檙晭?/
						/*檙晭?/
						/*檙晭?/
		P14 = 0x0;				/*弐殠豍140丣P143昻媍LED媏楪拹*/
		P15 = 0x01; 
		CKS=0b10100000;	 				/*弐殠豍150丣P153昻媍LED媏媰慲*/
		delay();
		P15 = 0x02; 
		CKS=0b11100000;	 				/*弐殠豍150丣P153昻媍LED媏媰慲*/
		delay();	
		P15 = 0x04; 
		CKS=0b11000000;	 				/*弐殠豍150丣P153昻媍LED媏媰慲*/
		delay();
		P15 = 0x08; 
		CKS=0b10000000;	 				/*弐殠豍150丣P153昻媍LED媏媰慲*/
		delay();				/*檙晭?/
						/*檙晭?/
					/*檙晭?/
						/*檙晭?/
		P15 = 0x0;	
	}   
	else {
	P13 = 0x0;					/*弐殠豍130丣P133昻媍LED媏楪拹*/
	P14 = 0x0; 					/*弐殠豍140丣P143昻媍LED媏楪拹*/
	P15 =0x0; 					/*弐殠豍150丣P153昻媍LED媏楪拹*/
	
	}  
	
	if(P4==0xFD) 
	{	P14 = 0x01;
		CKS=0b10000000;	 				/*弐殠豍140丣P143昻媍LED媏媰慲*/
		delay();
		P14 = 0x02;
		CKS=0b11000000;	 				/*弐殠豍140丣P143昻媍LED媏媰慲*/
		delay();
		P14 = 0x04;
		CKS=0b11100000;	 				/*弐殠豍140丣P143昻媍LED媏媰慲*/
		delay();
		P14 = 0x08;
		CKS=0b10100000;	 				/*弐殠豍140丣P143昻媍LED媏媰慲*/
		delay();				/*檙晭?/
						/*檙晭?/
		P14 = 0x0;
						/*弐殠豍140丣P143昻媍LED媏楪拹*/
		P15 = 0x01; 
		CKS=0b10100000;	 				/*弐殠豍150丣P153昻媍LED媏媰慲*/
		delay();
		P15 = 0x02; 
		CKS=0b11100000;	 				/*弐殠豍150丣P153昻媍LED媏媰慲*/
		delay();	
		P15 = 0x04; 
		CKS=0b11000000;	 				/*弐殠豍150丣P153昻媍LED媏媰慲*/
		delay();
		P15 = 0x08; 
		CKS=0b10000000;	 				/*弐殠豍150丣P153昻媍LED媏媰慲*/
		delay();				/*檙晭?/
		P15 = 0x0;	
		
		
		P13 = 0x01;
	    CKS=0b10000000;					/*弐殠豍130丣P133昻媍LED媏媰慲*/
		delay();
		
		P13 = 0x02;	
		CKS=0b11100000;			/*弐殠豍130丣P133昻媍LED媏媰慲*/
		delay();
		
		P13 = 0x04;	
		CKS=0b11000000;				/*弐殠豍130丣P133昻媍LED媏媰慲*/
		delay();
		
		P13 = 0x08;	
		CKS=0b10100000;			/*弐殠豍130丣P133昻媍LED媏媰慲*/
		delay();
						/*檙晭?/
		P13 = 0x0; 				/*弐殠豍130丣P133昻媍LED媏楪拹*/
		
	} 
	else {
	P13 = 0x0;					/*弐殠豍130丣P133昻媍LED媏楪拹*/
	P14 = 0x0; 					/*弐殠豍140丣P143昻媍LED媏楪拹*/
	P15 =0x0; 					/*弐殠豍150丣P153昻媍LED媏楪拹*/
	
	}  
	if(P4==0xFB)
	{	
		P15 = 0x01; 
		CKS=0b10100000;	 				/*弐殠豍150丣P153昻媍LED媏媰慲*/
		delay();
		P15 = 0x02; 
		CKS=0b11100000;	 				/*弐殠豍150丣P153昻媍LED媏媰慲*/
		delay();	
		P15 = 0x04; 
		CKS=0b11000000;	 				/*弐殠豍150丣P153昻媍LED媏媰慲*/
		delay();
		P15 = 0x08; 
		CKS=0b10000000;	 				/*弐殠豍150丣P153昻媍LED媏媰慲*/
		delay();				/*檙晭?/
	    				/*檙晭?/
		P15 = 0x0;	
		
		P13 = 0x01;
	    CKS=0b10000000;					/*弐殠豍130丣P133昻媍LED媏媰慲*/
		delay();
		
		P13 = 0x02;	
		CKS=0b11100000;			/*弐殠豍130丣P133昻媍LED媏媰慲*/
		delay();
		
		P13 = 0x04;	
		CKS=0b11000000;				/*弐殠豍130丣P133昻媍LED媏媰慲*/
		delay();
		
		P13 = 0x08;	
		CKS=0b10100000;			/*弐殠豍130丣P133昻媍LED媏媰慲*/
		delay();
					
		P13 = 0x0;			
		P14 = 0x01;
		CKS=0b10000000;	 				/*弐殠豍140丣P143昻媍LED媏媰慲*/
		delay();
		P14 = 0x02;
		CKS=0b11000000;	 				/*弐殠豍140丣P143昻媍LED媏媰慲*/
		delay();
		P14 = 0x04;
		CKS=0b11100000;	 				/*弐殠豍140丣P143昻媍LED媏媰慲*/
		delay();
		P14 = 0x08;
		CKS=0b10100000;	 				/*弐殠豍140丣P143昻媍LED媏媰慲*/
		delay();
		P14 = 0x0;				/*檙晭?/
						/*檙晭?/
		
						/*弐殠豍140丣P143昻媍LED媏楪拹*/
	}   
	
	if(P4==0xF7)
	{
	P13 = 0x0F;					/*弐殠豍130丣P133昻媍LED媏楪拹*/
	P14 = 0x0F; 					/*弐殠豍140丣P143昻媍LED媏楪拹*/
	P15 =0x0F; 	
	for(i=0;i<10;i++)
	{
	CKS=0b10000000;
	CKS=0b10000000+(0b00000010)*i;
	}
					/*弐殠豍150丣P153昻媍LED媏楪拹*/
	delay();
	}
	if(P4==0xEF)
	{
	OSCSELS=1;
	PM3=0xEF;
	RTCC0=0xAA;
	
	}
	//if(P4==0xEF)
	//{
	//P13 = 0x0;					/*弐殠豍130丣P133昻媍LED媏楪拹*/
	//P14 = 0x0; 					/*弐殠豍140丣P143昻媍LED媏楪拹*/
	//P15 =0x0;					/*弐殠豍150丣P153昻媍LED媏楪拹*/
	
	//}
	if(P4==0xDF)
	
	{
	OSCSELS=0;
	PM3=0xEF;
	RTCC0=0xAA;
	
	}
	
	    		/*弐殠豍150丣P153昻媍LED媏楪拹*/
}
}