Button sketch

Forum 2005-2010 (read only) Software Syntax & Programs
1

Hi,

I am completly new to this board but have used AVRs. This sketch appears to compile to over 900 bytes. Maybe someone can tell me why?

Ger

2

which sketch?

3

Yes the sketch complies to 962 bytes. What exactly are you looking to know? Do you think it should be smaller?

Each function in the sketch will take up a certain number of bytes once compiled. Not much you can do to change that. Just remember once compiled all the spaces and comments are not included in the complied code.

4

Hi again,

Is this 900+ bytes what ends up in the chip or is it something less?
I imagine a simple sketch like this should compile in under 50 bytes.

Ger

5

I imagine a simple sketch like this should compile in under 50 bytes.

Why would you think that? Where is this sketch you are talking about?

6

The button sketch included in the IDE under examples,digital.

Ger

7

If you use direct port access you could remove some size to the sketch, but the ide uses the avr-gcc toolchain, so it wouldn't differ a lot from a normal c program made in avrstudio.

8

This sketch:

void setup()
{
}

void loop()
{
}

which does absolutely nothing compiles to 436 bytes. That's a bit more than the 50 bytes you were expecting a functional sketch to use.