ATM13

ATM13 - Board

new

old

Sestava s programátorem PRESTO

	 MOV	DPTR,#TAB	 

tens: 	 MOV	P0,#00000010B
	 MOV	R5,#01H			
units:	 MOV	R3,#00H		 
next:	 MOV	A,R3			 
	 MOVC	A,@A+DPTR	 
	 MOV 	P0,A
	 ACALL	delay				 
	 INC	R3				 
	 CJNE	R3,#10D,next
	 MOV	A,R5
	 MOVC	A,@a+dptr
	 MOV	P2,A
	 INC	R5
	 CJNE	R5,#11D,again
	 SJMP	tens
again:	 SJMP	units			 	
			
delay:	MOV	R2,#06D		 
temp2:	MOV	R1,#255D		 
temp1:	MOV	R0,#255D		 
	DJNZ	R0,$         
	DJNZ	R1,temp1		 
	DJNZ	R2,temp2		 
	RET			
			
TAB:	DB 01000010B	;0x02 	0D
	DB 10011111B	;0x9F	1D		
	DB 00100100B	;0x24	2D		
	DB 00001100B	;0x1C	3D		
	DB 10011000B	;0x98	4D
	DB 01001000B	;0x48	5D
	DB 01000000B	;0x40	6D		
	DB 00011110B	;0x1E	7D		
	DB 00000000B	;0x00	8D		
	DB 00001000B	;0x0F	9D					
END


<source lang="cpp">
//2 Digit 7-Segment Up Down Counter Project using 8051 Microcontroller
//https://electronicswork.wordpress.com/2012/10/10/2-digit-7-segment-up-down-counter-project-using-8051-microcontroller/
#include <at89x51.h>

#define h P3_2	//up counter button 
#define g P3_3	//down counter button

int m=0;
int n=0;
int a,b;
int arr[10]={0x21,0x7D,0x13,0x19,0x4D,0x89,0x81,0x3D,0x01,0x09};
void main()
{
P2=0x21;
P0=0x21;
while(1)
{
P3=0xFF;
if(h==0)
{
if(n==99&&m==99)
{
P2=0x67;
P0=0x67;
}
else
{
m=m+1;
n=n+1;
a=m/10;
b=n%10;
P2=arr[a];
P0=arr[b];
while(h==0);
}
}
if(g==0)
{
if(n==0&&m==0)
{
P2=0x3F;
P0=0x3F;
}
else
{
m=m-1;
n=n-1;
a=m/10;
b=n%10;
P2=arr[a];
P0=arr[b];
while(g==0);
}
}
}
}