Question about using arguments in the called function

[therafman]

Hello,

just wanted to thank you for making bitlash available, I can see it has a lot of potential.
I have a question about using arguments in the called function: I am trying to create a function that passes the pin number to blink an LED.

This function works on the command prompt: function toggle {x = dr(arg(1)); dw(arg(1),!x);}

However I cannot run it in the background, I receive this error message:

run toggle(13),200
-------------------^
unexpected number

I tried passing two arguments including one for a delay like this:
function toggle {x = dr(arg(1)); dw(arg(1),!x); snooze(arg(2));}
but no change...

I tried to look up any info but came up empty. Any ideas?

[billroy]

Hello,

Thanks for your note, and your kind words.

The problem you are running into is caused by the limitation that background macros can’t take arguments.

The workaround is to make a “trampoline function” with no arguments to call your function with arguments, and run the trampoline:

function t13 {toggle(13)}
run t13, 200

Does that help?

-br

On May 4, 2014, at 11:33 PM, therafman notifications@github.com wrote:

Hello,

just wanted to thank you for making bitlash available, I can see it has a lot of potential.
I have a question about using arguments in the called function: I am trying to create a function that passes the pin number to blink an LED. This function works on the command prompt: function toggle {x = dr(arg(1)); dw(arg(1),!x);}
However I cannot run it in the background, I receive this error message:

run toggle(13),200

-------------------^
unexpected number

I tried passing two arguments including one for a delay like this: function toggle {x = dr(arg(1)); dw(arg(1),!x); snooze(arg(2));}
but no change...

I tried to look up any info but came up empty. Any ideas?

—
Reply to this email directly or view it on GitHub.

[therafman]

Thank you for the prompt reply Bill.
Unfortunately it looks like it won't work, but that's OK... I was just testing it for an idea I had and I can get around it by offloading that work to the external PC.

Thank you again, ciao for now.