mirror of
https://github.com/eclipse/upm.git
synced 2025-03-15 04:57:30 +03:00
255d6cbe86
The driver implements support for the DFRobot pH sensors. It was tested with both the standard and Pro versions, calibrated with standard buffer solutions at pH 4.01 and pH 7.0. Signed-off-by: Jon Trulson <jtrulson@ics.com> Signed-off-by: Abhishek Malik <abhishek.malik@intel.com>
57 lines
2.0 KiB
Python
57 lines
2.0 KiB
Python
#!/usr/bin/python
|
|
# Author: Jon Trulson <jtrulson@ics.com>
|
|
# Copyright (c) 2015 Intel Corporation.
|
|
#
|
|
# 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, sys, signal, atexit
|
|
import pyupm_dfrph as sensorObj
|
|
|
|
# Instantiate a DFRPH sensor on analog pin A0, with an analog
|
|
# reference voltage of 5.0
|
|
sensor = sensorObj.DFRPH(0, 5.0)
|
|
|
|
## Exit handlers ##
|
|
# This function stops python from printing a stacktrace when you hit control-C
|
|
def SIGINTHandler(signum, frame):
|
|
raise SystemExit
|
|
|
|
# This function lets you run code on exit
|
|
def exitHandler():
|
|
print "Exiting"
|
|
sys.exit(0)
|
|
|
|
# Register exit handlers
|
|
atexit.register(exitHandler)
|
|
signal.signal(signal.SIGINT, SIGINTHandler)
|
|
|
|
# After calibration, set the offset (based on calibration with a pH
|
|
# 7.0 buffer solution). See the UPM sensor documentation for
|
|
# calibrations instructions.
|
|
sensor.setOffset(0.065);
|
|
|
|
# Every second, sample the pH and output it's corresponding
|
|
# analog voltage.
|
|
|
|
while (1):
|
|
print "Detected volts: ", sensor.volts()
|
|
print "pH value: ", sensor.pH()
|
|
time.sleep(1)
|