ATM13
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ATM13 - Board
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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
//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=0xFE;
P0=0xFE;
}
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);
}
}
}
}