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4ea01180a1
The sainsmartks driver has been reimplemented in it's own, new C/C++ library: lcdks (LCD Keypad Shield). In addition, support for an optional backlight GPIO was added. This was tested with the SainsmartKS and DFRobot LCD Keypad Shields. Signed-off-by: Jon Trulson <jtrulson@ics.com>
64 lines
2.2 KiB
Python
Executable File
64 lines
2.2 KiB
Python
Executable File
#!/usr/bin/python
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# Author: Jon Trulson <jtrulson@ics.com>
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# Copyright (c) 2017 Intel Corporation.
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#
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# The MIT License
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#
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# Permission is hereby granted, free of charge, to any person obtaining
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# a copy of this software and associated documentation files (the
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# "Software"), to deal in the Software without restriction, including
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# without limitation the rights to use, copy, modify, merge, publish,
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# distribute, sublicense, and/or sell copies of the Software, and to
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# permit persons to whom the Software is furnished to do so, subject to
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# the following conditions:
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#
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# The above copyright notice and this permission notice shall be
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# included in all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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from __future__ import print_function
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import time, sys, signal, atexit
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from upm import pyupm_lcdks as lcdksObj
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def main():
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## Exit handlers ##
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# This stops python from printing a stacktrace when you hit control-C
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def SIGINTHandler(signum, frame):
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raise SystemExit
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# This function lets you run code on exit,
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def exitHandler():
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print("Exiting")
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sys.exit(0)
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# Register exit handlers
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atexit.register(exitHandler)
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signal.signal(signal.SIGINT, SIGINTHandler)
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# Instantiate a LCDKS (LCD Keypad Shield) using default pins
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# NOTE: The default pins do not include support for a gpio
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# controlled backlight. If you need one, you will need to specify
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# all neccessary pins to the constructor.
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lcd = lcdksObj.LCDKS()
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lcd.setCursor(0,0)
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lcd.write("LCDKS driver")
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lcd.setCursor(1,2)
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lcd.write("Hello World")
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# output current key value every second.
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while(1):
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print("Button value: ", lcd.getKeyValue())
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time.sleep(1)
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if __name__ == '__main__':
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main()
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