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→Add scheduler task
== Add scheduler task ==
== Add scheduler task ==
The {{fname|on_tasks_create}} parameter of the call {{fname|1=din.setup( setup=None, loop=loop, on_tasks_create=create_tasks )}} allow the ''user_code'' to add one or more asynchronous tasks.
The {{fname|on_tasks_create}} parameter of the call {{fname|1=din.setup( setup=None, loop=loop, on_tasks_create=create_tasks )}} allow the ''user_code'' to add one or more asynchronous tasks.
One of the most interesting task to create is a scheduler!
A scheduler like [https://github.com/mchobby/micropython-aioschedule micropython-aioschedule] can do much more than executing a job every minute or so. A scheduler can execute a task every day at a given time, or every Tuesday, every Saturday, a given date, etc.
The following code snippet shows the schedule of two job... jobs defined as '''async functions''' because aioschedule is asynchronous implementation.
<syntaxhighlight lang="python">
import schedule
# === Define & schedule Jobs ==================
async def job_relay2():
global din
din.rel2.on()
din.leds[1].on()
await asyncio.sleep(30) # Wait 30 Sec
din.leds[1].off()
din.rel2.off()
async def job_toggle_led( led_idx ): # Job with parameter
global din
din.leds[led_idx].toggle()
schedule.every(1).minutes.do( job_relay2 )
schedule.every(3).seconds.do( job_toggle_led, 2 ) # Toggle led 2 of 0..3
schedule.every(7).seconds.do( job_toggle_led, 3 ) # Toggle led 3 of 0..3
</syntaxhighlight>
Now, let's use the {{fname|on_tasks_create}} parameter to create a new asyncio task that runs the scheduler.
<syntaxhighlight lang="python">
def create_tasks( async_evloop ):
# new task to register
scheduler_task = async_evloop.create_task( schedule.run_forever() )
din.setup( setup=None, loop=loop, on_tasks_create=create_tasks )
</syntaxhighlight>
'''Now, glue the snipset into the final code:'''
The content here below can be found in