Build system

1. must reference respective C files
2. must setup include directory hierarchy properly.

Application

1. must provide ao.h, that includes all required modules (and excludes everything that is not needed, therefore saving space and minimizing the footprint).
2. must provide ao_boot() (in almost all but the simplest cases)
3. must provide several callbacks (optional)

Main Function

1. must call ao_boot()
2. for it is a task itself, it should loop indefinitely or explicity ao_stop() itself.

Main Function as Idle Task

void main()
{
ao_boot();

while (1) { }
}

Main Function as Idle Task in Low-Power System

void main()
{
ao_boot();

while (1)
{
ao_sys_idle();
}
}

Main Function Stopping Itself

void main()
{
ao_boot();

// Start another task.
ao_task_start( /* ... */ );

// Stop.
ao_stop();
}

Memory management

• everything static
• no need to allocate anything dynamically
• no “create” or “delete” functions

Memory initialization

• basic initialization = clear object (set zeros)
• some data structures require the assignment of auxiliary objects (such as a store for buffers)
• global variables are zeroed on start-up.