upm/examples/python/mhz16.py
Noel Eck 2f78d9f62b python_examples: Reformatted, self-checking, executable
* Moved body of each python example to main.  This allows for basic
      load module testing for CI
    * General cleanup of python modules (crlf/tabs/prints/etc)
    * Chmod'ed to 755 to allow running examples without specifying the
      python interpreter
    * Added ctest for loading python2/3 modules
    * Added jniclasscode pragma for java swig interface files.
    * Updated check_examplenames.py module to check all languages vs. a
      cxx example name
    * Added tests for checking python module and test loading
    * Added 'make test' to travis-ci run (run ctests)
    * Print a more meaningful message when not building cxx docs into
      python modules
    * Updated check_clean.py to only check java wrapper files
    * ENABLED ctests for UPM
    * Deleted using_carrays.py python example - this is covered by other
      examples

Signed-off-by: Noel Eck <noel.eck@intel.com>
2016-10-04 16:10:17 -07:00

73 lines
2.6 KiB
Python
Executable File

#!/usr/bin/python
# Author: Zion Orent <zorent@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_mhz16 as upmMhz16
def main():
# Instantiate a MHZ16 serial CO2 sensor on uart 0.
# This example was tested on the Grove CO2 sensor module.
myCO2 = upmMhz16.MHZ16(0)
## Exit handlers ##
# This 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,
# including functions from myCO2
def exitHandler():
print "Exiting"
sys.exit(0)
# Register exit handlers
atexit.register(exitHandler)
signal.signal(signal.SIGINT, SIGINTHandler)
# make sure port is initialized properly. 9600 baud is the default.
if (not myCO2.setupTty(upmMhz16.cvar.int_B9600)):
print "Failed to setup tty port parameters"
sys.exit(0)
print ("Make sure that the sensor has had "
"at least 3 minutes to warm up\n"
"or you will not get valid results.\n"
"The temperature reported is not the ambient temperature,\n"
"but rather the temperature of the sensor elements.")
time.sleep(1)
while(1):
if (not myCO2.getData()):
print "Failed to retrieve data"
else:
outputStr = ("CO2 concentration: {0} PPM, "
"Temperature (in C): {1}".format(
myCO2.getGas(), myCO2.getTemperature()))
print outputStr
time.sleep(2)
if __name__ == '__main__':
main()