#!/usr/bin/env python
#
# This is the library for Grove Base Hat.
#
# OneLed Classes
#
'''
## License
The MIT License (MIT)
Grove Base Hat for the Raspberry Pi, used to connect grove sensors.
Copyright (C) 2018 Seeed Technology Co.,Ltd.
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
'''
import time
import threading
from grove.gpio import GPIO
[docs]class OneLed(object):
MAX_BRIGHT = 100
def __init__(self, pin):
self._light = False
self._bright = self.MAX_BRIGHT
self.__blink_on = 0.0
self.__blink_off = 0.0
self.__thrd = None
self.__thr_exit = False
self._r, self._g, self._b = 255,255,255
def __thrd_exit(self):
if not self.__thrd is None:
self.__thr_exit = True
self.__thrd.join()
self.__thrd = None
def __del__(self):
self.__thrd_exit()
def __thrd_blink(self):
while not self.__thr_exit:
self._lighton(True)
time.sleep(self.__blink_on)
self._lighton(False)
time.sleep(self.__blink_off)
def blink(self, on = 0.5, off = 0.5):
self.__blink_on = on
self.__blink_off = off
if on < 0.001 and off < 0.001:
self.__thrd_exit()
return
if not self.__thrd is None:
return
self.__thr_exit = False
self.__thrd = threading.Thread( \
target = OneLed.__thrd_blink, \
args = (self,))
self.__thrd.setDaemon(True)
self.__thrd.start()
# To be derived
def _lighton(self, b = True):
pass
def light(self, on = None):
if type(on) != bool:
return self._light
self.__thrd_exit()
self._light = on
self._lighton(self._light)
return self._light
# To be derived
def _setcolor(self, r, g, b):
return False
# Set color
def color(self, r = None, g = 0, b = 0):
if type(r) != int:
return self._r, self._g, self._b
if self._setcolor(r, g, b):
self._r, self._g, self, _b = r, g, b
return self._r, self._g, self._b
@property
def brightness(self):
return self._bright
# bright 0(turn off) - 100(max bright)
@brightness.setter
def brightness(self, bright):
self._bright = bright
[docs]class OneLedTypedGpio(OneLed):
def __init__(self, pin, high_enable = True):
super(OneLedTypedGpio, self).__init__(pin)
self.__high_en = high_enable
self.__gpio = GPIO(pin, GPIO.OUT)
def _lighton(self, b = True):
v = self.__high_en == bool(b) and bool(self._bright)
# print("write {} {}".format(self._bright, int(v)))
self.__gpio.write(int(v))