Code size difference

Projects Programming
1

These 2 bits of code toggles an output, but code 1 is 68 bytes smaller than code 2 when compiled.

Why is there so much difference ?

Kim

Code 1 (smaller):
//*****************************************
void HeartBeat(void)
{
static byte state; // private variable declared
if (state>0) {
digitalWrite(Heartbeat,HIGH);
state= 0;
delay(100);
}
else {
digitalWrite(Heartbeat,LOW);
state= 1;
delay(100);
}
return;
}
//********************************************

Code 2 (bigger):
//******************************************
void HeartBeat(void)
{
static boolean state; // private variable declared here

digitalWrite(Heartbeat,state);
state=!state; //toggle output state
delay(100);

return;
}

2

Okay, I guess I should look at the assembly listing as well.

3

Spoke to soon.
When I press shift and click compile, all it does is compile normally.
I cannot see any assembly code

Any suggestions ?

Using Arduino V1 on Ubuntu

4

Prior to 1.0, holding the shift key triggered verbose output. Now, it is a setting on the preferences panel.

5

Okay, changed the setting in preferences to show verbose output during compilation.
But I can only see object files, which I cannot read with my editor

Hmm, any suggestions ?

Kim

6

Avr-objdump

7

Thanks
Didn't know that Linux came with a built in disassembler :slight_smile:
Command line only, tho. More stuff to remember.