Micro controller programming in "C"

[vinwin]

if (blink_status ==1){     //If led is bliking, stop it
         P1OUT &= ~ 0x01;           // Turn Led off
         blink_status=0;
       }else 
        blink_status=1;
     }

Could anybody explain the logic please...

[Ancient Dragon]

>>P1OUT &= ~ 0x01

I suspect P1OUT is an LED port address, and as the comment says it is turning off the bit.

[death_oclock]

Try reading about bitwise operators, that will clear things up for you.

[vinwin]

I understand the the bitwise operation... no issues abt that..
but with the "if.. else" statement.... why is the condition same for both if and else....

[death_oclock]

The else doesn't have a condition, but the syntax error could lead you to think that. The code should be:

if (blink_status ==1){ //If led is bliking, stop it
P1OUT &= ~ 0x01; // Turn Led off
blink_status=0;
}else{
blink_status=1;
}

blink_status=1 is simply a statement. This code just flips blink_status between 0 and 1.

[vinwin]

hmm. .. I got it...
thnks to all suggestions .....