Comments on: How-to: Write an Asterisk Module, Part 1

By: rocco

rocco — Mon, 30 Nov 2009 02:17:28 +0000

Russel,

thank you very much for this three tutorials and also thanks to SC for showing how to compile only the module and not the whole asterisk.

It made me going into the right direction of writing custom CDR which POSTS data via HTTP to external server.

By: dennis

dennis — Wed, 09 Sep 2009 12:18:27 +0000

Thanks for your shared!
It’s very helpful for me!

By: Francesco

Francesco — Wed, 01 Jul 2009 23:33:32 +0000

Hi Russel, thanks a lot for your “How-to” it is very useful.
I have a question, because i’m finding much more informations about all functions of Asterisk, because i don’t know to develope a module if i don’t know what are the functions.
I have seen the “Doxygen code documentation” but seems to be a little ambiguos, because i can see all type of struct but not a list of all functions with specification for each one.
Can you help and tell me where i can find something like this?
Thanks a lot.
Francesco.

By: Zelalem

Zelalem — Tue, 21 Apr 2009 11:57:21 +0000

Hi Russel, thanks a lot. It works. I was away for sometime and was able to check it just now.

Zelalem

By: Zelalem

Zelalem — Tue, 16 Dec 2008 08:36:29 +0000

Hi russel, thank you for your response. I will look at it as soon as i get time.

Thanks again.

By: russell

russell — Thu, 11 Dec 2008 14:13:50 +0000

Zelalem, the function that you probably want to use here is pbx_builtin_setvar_helper(). This lets you set a channel variable on a channel that you can access from the dialplan.

I hope this helps.

By: Zelalem

Zelalem — Thu, 11 Dec 2008 14:02:33 +0000

Hi Russel, I got one problem. I had developed an application that I run successfully (it takes the current exten from asterisk through the chan variable) and then it identifies a path. And then I wanted it to return tha path back to asterisk. My problem is here. I want to return a string value from my application to asterisk, but couldn’t succeed. Please help me. I have done everything but couldn’t return a value back to asterisk. i can even got value from asterisk (like the current extension).

By: Zelalem

Zelalem — Mon, 08 Dec 2008 09:23:49 +0000

Thanks a lot.

It really help.

By: russell

russell — Mon, 08 Dec 2008 01:34:53 +0000

Ray,

The AST_MODULE error should not happen if you drop the module in the Asterisk build system and let it get built automatically.

If you’re building the module outside of Asterisk, you can just define it in your souce:

#ifndef AST_MODULE
#define AST_MODULE “app_mymodule”
#endif

By: russell

russell — Mon, 08 Dec 2008 01:33:41 +0000

The enum that you refer to defines names for bits to be used as flags. OPTION_A is the first bit, OPTION_B is the second bit, OPTION_C is the third bit, …

So, you can define an integer like this:

unsigned int flags;

flags = OPTION_A | OPTION_C;

That sets two bits in the integer flags to indication that options A and C are enabled.

Hopefully this helps!