Class for controlling LEDs on MicroPython PyBoard

mp_led_class.py

import pyb, micropython
micropython.alloc_emergency_exception_buf(100)
from pyb import Pin

class LED_Control(object):
    def __init__(self, timer, ledPin):
        self.led = pyb.Pin(ledPin, pyb.Pin.OUT_PP)
        self.led.value(True)
        self.timer = timer
        self.timer.callback(self.cb)

    def cb(self, tim):
        # toggle pin
        self.led.value(not self.led.value())

    def on(self):
        self.led.value(True)
        if self.blinking:
            self.timer.callback(self.cb)
        else:
            self.timer.callback(None)

    def off(self):
        self.led.value(False)
        self.timer.callback(None)

    def on_blinking(self):
        self.blinking = True
        self.on()

    def set_timer_freq(self, new_freq):
        # todo: test for bad new_freq
        self.timer.init(freq=new_freq)
        
""" Usage:        
>>> pinY1 = LED_Control(pyb.Timer(4, freq=1), pyb.Pin.board.Y1)
>>> pinY2 = LED_Control(pyb.Timer(5, freq=2), pyb.Pin.board.Y2)
>>> pinY3 = LED_Control(pyb.Timer(6, freq=3), pyb.Pin.board.Y3)
>>> pinY1.off()
>>> pinY1.on_blinking()
>>> pinY2.off()
>>> pinY2.on()
>>> pinY3.set_timer_freq(10)
>>> pinY3.set_timer_freq(0.10)

"""