Example 8: Autoscroll

examples/ex8_qwiic_serlcd_autoscroll_with_text.py
 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
#!/usr/bin/env python
#-----------------------------------------------------------------------------
# ex8_qwiic_serlcd_autoscroll_with_text.py
#
# Simple example demonstrating the autoscroll feature on the SerLCD (Qwiic).
#
# This example demonstrates the use of the autoscroll()
# and noAutoscroll() functions to make new text scroll or not.
#------------------------------------------------------------------------
#
# Written by SparkFun Electronics, August 2020
#
# Ported from Arduino Library code with many contributions from
# Gaston Williams - August 29, 2018
# 
# This python library supports the SparkFun Electroncis qwiic 
# qwiic sensor/board ecosystem on a Raspberry Pi (and compatable) single
# board computers. 
#
# More information on qwiic is at https://www.sparkfun.com/qwiic
#
# Do you like this library? Help support SparkFun. Buy a board!
#
#==================================================================================
# Copyright (c) 2020 SparkFun Electronics
#
# 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.
#==================================================================================
# Example 8
#

from __future__ import print_function
import qwiic_serlcd
import time
import sys

def runExample():

	print("\nSparkFun Qwiic SerLCD   Example 8\n")
	myLCD = qwiic_serlcd.QwiicSerlcd()

	if myLCD.connected == False:
		print("The Qwiic SerLCD device isn't connected to the system. Please check your connection", \
			file=sys.stderr)
		return

	myLCD.setBacklight(255, 255, 255) # Set backlight to bright white
	myLCD.setContrast(5) # set contrast. Lower to 0 for higher contrast.
	myLCD.begin() # call this for default settings (no
	myLCD.leftToRight()
	time.sleep(1) # give a sec for system messages to complete
	
	while True:
		myLCD.setCursor(0, 0) # set the cursor to (0,0)

		for thisChar in range(10): # print from 0 to 9
			myLCD.print(str(thisChar))
			time.sleep(0.5)

		myLCD.autoscroll() # set the display to automatically scroll

		for thisChar in range(0,10): # print from 0 to 9
			myLCD.setCursor(10+thisChar,1)
			myLCD.print(str(thisChar))
			time.sleep(0.5)
  
		myLCD.noAutoscroll() # turn off automatic scrolling	
		myLCD.clearScreen() # clear screen for the next loop

if __name__ == '__main__':
	try:
		runExample()
	except (KeyboardInterrupt, SystemExit) as exErr:
		print("\nEnding Example 8")
		sys.exit(0)