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Majenko
Majenko
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I'm not surprised the LED doesn't blink - the entirety of your logic in the loop() function is so bizarre as to elicit the question:

WTF?

Let's take a look at it line by line:

digitalWrite(13,val);

Set the LED to whatever valval is - valval starts as 0, so the LED is off.

while(!val);

While valval is not anything except 0, so while val is zero, do nothing. (The interrupt would escape you from this if your val was volatile)

val=0;

Set valval to 0.

So how can valval be anything except 0 when you do the digitalWrite?

I'm not surprised the LED doesn't blink - the entirety of your logic in the loop() function is so bizarre as to elicit the question:

WTF?

Let's take a look at it line by line:

digitalWrite(13,val);

Set the LED to whatever val is - val starts as 0, so the LED is off.

while(!val);

While val is not anything except 0, so while val is zero, do nothing.

val=0;

Set val to 0.

So how can val be anything except 0 when you do the digitalWrite?

I'm not surprised the LED doesn't blink - the entirety of your logic in the loop() function is so bizarre as to elicit the question:

WTF?

Let's take a look at it line by line:

digitalWrite(13,val);

Set the LED to whatever val is - val starts as 0, so the LED is off.

while(!val);

While val is not anything except 0, so while val is zero, do nothing. (The interrupt would escape you from this if your val was volatile)

val=0;

Set val to 0.

So how can val be anything except 0 when you do the digitalWrite?

Source Link
Majenko
Majenko
  • 105.9k
  • 5
  • 82
  • 139

I'm not surprised the LED doesn't blink - the entirety of your logic in the loop() function is so bizarre as to elicit the question:

WTF?

Let's take a look at it line by line:

digitalWrite(13,val);

Set the LED to whatever val is - val starts as 0, so the LED is off.

while(!val);

While val is not anything except 0, so while val is zero, do nothing.

val=0;

Set val to 0.

So how can val be anything except 0 when you do the digitalWrite?