Example Four - Set Brightness¶
examples/qwiic_alphanumeric_ex04_set_brightness.py¶
1# !/usr/bin/env python
2# ----------------------------------------------------------------------
3# qwiic_alphanumeric_ex5_set_brightness.py
4#
5# This example sets the brightness of the Qwiic Alphanumeric display.
6# ----------------------------------------------------------------------
7#
8# Written by Priyanka Makin @ SparkFun Electronics, September 2021
9#
10# This python library supports the SparkFun Electronics qwiic sensor/
11# board ecosystem on a Raspberry Pi (and compatable) single board
12# 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) 2021 SparkFun Electronics
20#
21# Permission is hereby granted, free of charge, to any person obtaining
22# a copy of this software and associated documentation files (the
23# "Software"), to deal in the Software without restriction, including
24# without limitation the rights to use, copy, modify, merge, publish,
25# distribute, sublicense, and/or sell copies of the Software, and to
26# permit persons to whom the Software is furnished to do so, subject to
27# the following conditions:
28#
29# The above copyright notice and this permission notice shall be
30# included in all copies or substantial portions of the Software.
31#
32# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
33# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
34# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
35# IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
36# CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
37# TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
38# SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
39#=======================================================================
40# Example 5
41
42from __future__ import print_function
43import qwiic_alphanumeric
44import time
45import sys
46
47def run_example():
48
49 print("\nSparkFun Qwiic Alphanumeric - Example 5: Set Brightness")
50 my_display = qwiic_alphanumeric.QwiicAlphanumeric()
51
52 if my_display.begin() == False:
53 print("\nThe Qwiic Alphanumeric isn't connected to the system. Please check your wiring.", \
54 file=sys.stderr)
55 return
56
57 print("\nQwiic Alphanumeric Ready!")
58
59 while True:
60 for i in range(0, 16):
61 # The input to set_brightness() is a duty cycle over 16
62 # So, the acceptable inputs to this function are ints between 0 (display off)
63 # and 15 (full brightness)
64 my_display.set_brightness(i)
65 my_display.display_print("Milk")
66 time.sleep(1)
67
68if __name__ == '__main__':
69 try:
70 run_example()
71 except (KeyboardInterrupt, SystemExit) as exErr:
72 print("\nEnding Example 5")
73 sys.exit(0)