How to use a Timer to blink a LED

[ColombianAus]

Hi there,

I've followed following example form "5. Hardware Timers" with no success

from machine import Timer
from machine import Pin
led = Pin('GP16', mode=Pin.OUT) # enable GP16 as output to drive the LED
tim = Timer(3) # create a timer object using timer 3
tim.init(mode=Timer.PERIODIC) # initialize it in periodic mode
tim_ch = tim.channel(Timer.A, freq=5) # configure channel A at a frequency of 5Hz
tim_ch.irq(handler=lambda t:led.toggle(), trigger=Timer.TIMEOUT)

If I type every line into the REPL, I got following error...

from machine import Timer
from machine import Pin
led = Pin('G16', mode=Pin.OUT)
tim = Timer(3)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: cannot create 'Timer' instances

Now, if I follow the example under "Quick reference for the WiPy" (which is different to previous one!!!)...

from machine import Timer
from machine import Pin
tim = Timer(0, mode=Timer.PERIODIC)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
AttributeError: type object 'Timer' has no attribute 'PERIODIC'

I would appreciate any help in regards to:

1. Has anyone found a Timer Tutorial here?
2. What is wrong with the snip codes that I 've pasted?

Cheers
ColombianAus

[jmarcelino]

You're following the documentation for WiPy 1 but you have the new WiPy 2 which does Timers differently.

All the new documentation is at https://docs.pycom.io

The section you want is at https://docs.pycom.io/pycom_esp32/pycom_esp32/tutorial/includes/timers.html

Use the Alarm example

[ColombianAus]

@jmarcelino

thank you mate...spot on. ...Do you know what is the most recent copy "Micropython Documentation"? for WiPy 2.0?

cheers
ColombianAus