Example Four - Set Brightness¶
examples/qwiic_led_stick_ex4_set_brightness.py¶
1# !/usr/bin/env python
2# ---------------------------------------------------------------------------------
3# qwiic_led_stick_ex3_set_brightness.py
4#
5# This example changes brightness of the LED Stick in different ways, then stops
6# through each available brightness setting.
7# --------------------------------------------------------------------------------
8#
9# Written by Priyanka Makin @ SparkFun Electronics, June 2021
10#
11# This python library supports the SpakrFun Electronics qwiic sensor/
12# board ecosystem on a Raspberry Pi (and compatible) board computers.
13#
14# More information on qwiic is at https://www.sparkfun.com/qwiic
15#
16# Do you like this library? Help support SparkFun by buying a board!
17#
18#==================================================================================
19# Copyright (c) 2019 SparkFun Electronics
20#
21# Permission is hereby granted, free of charge, to any person obtaining a copy
22# of this software and associated documentation files (the "Software"), to deal
23# in the Software without restriction, including without limitation the rights
24# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
25# copies of the Software, and to permit persons to whom the Software is
26# furnished to do so, subject to the following conditions:
27#
28# The above copyright notice and this permission notice shall be included in all
29# copies or substantial portions of the Software.
30#
31# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
32# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
33# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
34# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
35# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
36# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
37# SOFTWARE.
38#==================================================================================
39# Example 4
40
41from __future__ import print_function
42import qwiic_led_stick
43import time
44import sys
45
46def run_example():
47
48 print("\nSparkFun Qwiic LED Stick Example 3")
49 my_stick = qwiic_led_stick.QwiicLEDStick()
50
51 if my_stick.begin() == False:
52 print("\nThe Qwiic LED Stick isn't connected to the system. Please check your connection", \
53 file=sys.stderr)
54 return
55 print("\nLED Stick ready!")
56
57 # Initialize LEDs as a rainbow followed by 1 white pixel
58 red_list = [255, 255, 170, 0, 0, 0, 0, 170, 255, 255]
59 green_list = [0, 170, 255, 255, 255, 170, 0, 0, 0, 255]
60 blue_list = [0, 0, 0, 0, 170, 255, 255, 255, 170, 255]
61
62 # Turn on the LED Stick according to the 3 arrays
63 my_stick.set_all_LED_unique_color(red_list, green_list, blue_list, 10)
64
65 while True:
66
67 # This will step through each available brightness setting
68 # Brightness values can be from 0 - 31
69 for i in range(0, 32):
70 my_stick.set_all_LED_brightness(i)
71
72 print("\nBrightness level: " + str(i))
73 time.sleep(1)
74
75if __name__ == '__main__':
76 try:
77 run_example()
78 except (KeyboardInterrupt, SystemExit) as exErr:
79 print("\nEnding Example 4")
80 sys.exit(0)