[SOLVED] 8051 blinking led code

[sherryliu]

Hi guys,i want to modified code to show blink led difference,how to optimized the code.when i click one show one way and click again show other way.

#include <reg51.h>
#include<intrins.h>

unsigned char tmod=0;
unsigned char i ,j,tmp;

void delay_1ms(void)
{
unsigned int i;
for (i=1;i<(unsigned int)(1144-2);i++);
}


void delay_ms(unsigned int n)
{
unsigned int i=0;
while(i<n)
{
delay_1ms();
i++;
}
}


void main(void)
{
ET0=1;
ET1=1;
EX0=1;
EX1=1;
EA=1;
while(1)
P0=0x00;
}

void int0(void) interrupt 0
{

switch(tmod)
{
case 0:
tmp=0x01;
for(j=8; j>0; j--)
{
P0=~tmp;
delay_ms(50);
tmp =tmp<<1;
}
break;
case 1:
tmp=0x80;
for(j=8; j>0; j--)
{
P0=~tmp;
delay_ms(50);
tmp = tmp>>1;
}
break;
case 2:
break;

}
tmod+=1;
if(tmod==2)tmod=0;

}

 

[jayanth.devarayanadurga]

Explain how exactly it has to work? I don't see any button related code.

 

[sherryliu]

Hi jayanth
I used interrupt 0 to control blinking led,i want click it show one style,and click it again show other style.

 

[jayanth.devarayanadurga]

mikroC Code for P1. Not tested. Test in hardware.

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Code C - [expand]
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unsigned char togglemode = 0, i = 0;
 
void Interrupt() {
     if(IE0_bit)
     togglemode = ~togglemode;
     
     IE0_bit = 0;
}
 
void main() {
 
     P1 = 0x00;
     P3.F2 = 1;
 
     EX0_bit = 1;
     IE0_bit = 1;
     IT0_bit = 1;
     EA_bit = 1;
       
     while(1){
 
             if(togglemode){
                   P1 = 0x01;
                   for(i = 0; i < 8; i++) {
                          P1 <<= 1;
                          Delay_ms(500);
                   }
             }
             else if(!togglemode){
                   P1 = 0x80;
                   for(i = 0; i < 8; i++) {
                          P1 >>= 1;
                          Delay_ms(500);
                   }
             }
     }
}

---

 

[sherryliu]

I have modified code ,can do it.thanks!!