Stc8h8k series assembly and C51 actual combat - keys allow key counting (using falling edge interrupt control)

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One 、 subject

Programming to achieve nixie tube display SW17 The number of times the button is pressed , requirement SW18 Control start and stop , That is, press a single number of times SW18 On the premise of , Start recording SW17 Number of presses , Press... Even times SW18 Key , Then clear the count value , Start all over again SW17 The number of keystrokes is counted .

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Two 、 Code

#include <stc8h.h>
#include <intrins.h>

void Delay1ms()		//@24.000MHz
{
    
	unsigned char i, j;

	_nop_();
	i = 32;
	j = 40;
	do
	{
    
		while (--j);
	} while (--i);
}


void gpio()		//gpio Initialize to quasi two-way port , At first, except P30,P31 Others are in high resistance state 
{
    
    P0M1 = 0x00;   P0M0 = 0x00;   // Set as quasi two-way port 
    P1M1 = 0x00;   P1M0 = 0x00;   // Set as quasi two-way port 
    P2M1 = 0x00;   P2M0 = 0x00;   // Set as quasi two-way port 
    P3M1 = 0x00;   P3M0 = 0x00;   // Set as quasi two-way port 
    P4M1 = 0x00;   P4M0 = 0x00;   // Set as quasi two-way port 
    P5M1 = 0x00;   P5M0 = 0x00;   // Set as quasi two-way port 
    P6M1 = 0x00;   P6M0 = 0x00;   // Set as quasi two-way port 
    P7M1 = 0x00;   P7M0 = 0x00;   // Set as quasi two-way port 
}


u8 code t_display[]={
                           // Standard font 
// 0 1 2 3 4 5 6 7 8 9 A B C D E F
    0x3F,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,0x7F,0x6F,0x77,0x7C,0x39,0x5E,0x79,0x71};    //0. 1. 2. 3. 4. 5. 6. 7. 8. 9. -1

u8 code T_COM[]={
    0x01,0x02,0x04,0x08,0x10,0x20,0x40,0x80};      // Bit code 

unsigned int n=0 ;// because n The following values are 1000, It can't be unsigned char type 



void Nixie(u8 i, u16 j)
{
    
	P7=~T_COM[i];
	P6=~t_display[j];
	Delay1ms();
	P6 = 0xFF;
}

void Init()
{
    

	EA=1;// Turn on cpu Total interruption 
	IT0=1;// Edge jump trigger 
	IT1=1;// Edge jump trigger 
	EX0=1;
	EX1=1;
	PX0=0;		// External interrupt 0 For high priority 
	PX1=1;		// External interrupt 1 Low priority 
}

u8 flag=0;	//flag by 1 When sw17 It works 
u8 count[2];	// The maximum count limit is set to 99

void main()
{
    
	gpio();
	Init();
	
	while(1)
	{
    

		Nixie(0,count[0]);	// Display ten digits 
		Nixie(1,count[1]);
		
	}
}

void INT1()		interrupt 2
{
    
	Nixie(0,count[0]);	// Display ten digits 
	Nixie(1,count[1]);
	flag++;	//sw18 Press after flag Value change , initial flag by 0, Press once to open , Even close 
	if(flag==2)flag=0;	
	ET1=0;
}

void INT0()		interrupt 0
{
    
	Nixie(0,count[0]);	// Display ten digits 
	Nixie(1,count[1]);
	
	count[0]++;		// Add... Every time you press 1
	
	if(count[0]==10)
	{
    
		count[0]=0;
		count[1]++;
		if(count[1]==10)
		{
    
			count[1]=0;
		}
	}
	
	ET0=0;
}

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