Propeller C - How to test the state of an output pin?

SLinco

Hi All,

Finally back after several years away - and now I'm learning C on the Propeller YEAH!

So I'd like to toggle an LED in my main loop - like we can in spin:

!outa[ led ]

Anyone got any idea of the equivalent in C? I've searched, but haven't found anything I understand! I did find the Toggle Tutorials, but whoa they are complex for such a simple requirement.

Dave Hein

The equivalent to "!outa[led]" is "OUTA ^= 1 << led;".

SLinco

Many thanks Dave,

I don't think I would've found that. I'll give that a try a.s.a.p.

YAY - that works :-)

Turns out that there's also a toggle() function!

None of the above worked at first, but then I spotted that I had

while( 1 );
{
  ...
}

... semi-colon where a semi-colon shouldn't be - D'oh!

Thanks again.