= Hello World =

Hello world is the basic useless example. It tends to prove you have a complete working setup.

This example will print "Hello world !" message infinitely repeated (due tu DsxTasks).

== Task ==

First we will create our task and declare it.

hello.c:

{{{
#include <srl.h>
#include "hello_proto.h"

FUNC(hello) {
    srl_log_printf(NONE, "Hello world!\n");
}
}}}

Task description in dsx's API, to put in `hello.task`:

{{{
TaskModel(
        'hello_task_model',
        impl = [
        SwTask('hello', stack_size = 128, sources = ['hello.c'])
        ] )
}}}

== Test under Posix ==

Let's create a task graph containing only this one, in `tcg.py`.

And let's generate Posix test application.

{{{
from dsx import *

tcg = Tcg( Task('hello', 'hello_task_model')
         )

px = Posix()
tcg.generate(px)
}}}

Now we can launch it.

{{{
$ ./exe.posix
Hello world!
Hello world!
Hello world!
Hello world!
Hello world!
Hello world!
Hello world!
Hello world!
^C
$ 
}}}

It works !