def init():
try:
ser = serial.Serial(port='/dev/ttyUSB0', baudrate=9600, timeout=1)
usb = usbiss.USBISS('/dev/ttyACM0', 'spi', spi_mode=2, freq=500000)
alphasense = opc.OPCN2(usb)
alphasense.on()
time.sleep(10.0)
return True
except:
return False
def reset(self):
self.spi = spidev.SpiDev()
self.spi.open(0, 0)
# Set the SPI mode and clock speed
self.spi.mode = 1
self.spi.max_speed_hz = 500000
try:
self.alpha = opc.OPCN2(self.spi)
except Exception as e:
print("Startup Error: {}".format(e))
self.alpha.on()
sleep(2)
def init_opc ():
print ("initializing OPC reader...")
try:
spi = usbiss.USBISS("/dev/opc", 'spi', spi_mode = 2, freq = 500000)
sleep(2)
opc_reader = opc.OPCN2(spi)
sleep (2)
opc_reader.on ()
sleep (2)
print ("success.")
return opc_reader
except:
print ("Failed to init OPC")
return None
def get_alpha(spi):
# Set the SPI mode and clock speed
spi.mode = 1
spi.max_speed_hz = 500000
try:
alpha = opc.OPCN2(spi, debug=True)
if alpha is None:
raise Exception('Could not connect!')
print('Connected to', alpha)
return alpha
except Exception as e:
exit_error(e, 'Could not start alpha controller')
def __init__(self):
threading.Thread.__init__(self)
# Open a SPI connection on CE0
self.spi = spidev.SpiDev()
self.spi.open(0, 0)
# Set the SPI mode and clock speed
self.spi.mode = 1
self.spi.max_speed_hz = 500000
self.SFR = 0
self.PM25 = 0
self.PM1 = 0
self.PM10 = 0
self.samplingPeriod = 0
try:
self.alpha = opc.OPCN2(self.spi)
except Exception as e:
print("Startup Error: {}".format(e))
# Initialize the K-30 carbon dioxide sensor.
import serial
import time
ser = serial.Serial('/dev/ttyAMA0')
print(' K-30 Serial Connected!')
ser.flushInput()
time.sleep(1)
# Initialize the OPC-N2 particle monitor.
import spidev
import opc
spi = spidev.SpiDev()
spi.open(0, 0)
spi.mode = 1
spi.max_speed_hz = 500000
alpha = opc.OPCN2(spi)
print(' OPC-N2 connected!')
# Turn sensor on.
time.sleep(1)
alpha.on()
import atexit
@atexit.register
def cleanup():
alpha.off()
# Read data from both sensors every 1 second.
while True:
# In connection case get the values of particle sensor and sending by Xbee transceiver
# in the opposite case print negative case
if (a):
with silence():
# Create the saving file if the hardware is ready
#Create the saving values and create news each the time change
t0 = datetime.datetime.now()
Name = "OPCN2_" + str(t0.year) + "_" + str(t0.month) + "_" + str(
t0.day) + "_" + str(t0.hour) + "_" + str(t0.minute) + "_" + str(
t0.second) + ".txt"
FileSave = open(Name, 'w')
# Again configure the hardware (global object)
ser = serial.Serial(port='/dev/ttyUSB0', baudrate=9600, timeout=1)
usb = usbiss.USBISS('/dev/ttyACM0', 'spi', spi_mode=2, freq=500000)
alphasense = opc.OPCN2(usb)
alphasense.on()
time.sleep(10.0)
while True:
# Contruct the data to send. Use the frame construction and
# send using Xbee
Hist = alphasense.histogram()
Hist['Time'] = str(datetime.datetime.now())
d0 = str(Hist['PM1']) + " "
d1 = str(Hist['PM2.5']) + " "
d2 = str(Hist['PM10']) + " "
d3 = str(Hist['Time'])
D = d0 + d1 + d2 + d3
Dat0 = range(0, len(D))
for k in range(0, len(D)):
Dat0[k] = ord(D[k])
# Get arguments
if len(sys.argv) != 2:
print('Usage: {} dev-path'.format(sys.argv[0]))
sys.exit(1)
# Port
port = sys.argv[1]
# Sample period
period = 10
# Open connection to USB-ISS in SPI mode.
usb = usbiss.USBISS(port, 'spi', spi_mode=2, freq=500000)
# Give the USB connection to py-opc
alpha = opc.OPCN2(usb)
# Toggle to tur on properly
alpha.off()
sleep(1)
alpha.on()
sleep(1)
# log data
lastUpdated = 0
# data
latitude = str(37.295912)
longitude = str(126.975706)
"""Run these tests at the command line/terminal via
$ python3 tests/manual_tests.py
"""
import usbiss
from usbiss.spi import SPI
import opc
from time import sleep
spi = SPI("/dev/ttyACM0")
spi.mode = 1
spi.max_speed_hz = 500000
alpha = opc.OPCN2(spi, debug=True)
print("Running manual OPC-N2 tests...")
sleep(1)
# turn on
print("Turning ON: {}".format(alpha.on()))
sleep(1)
print("Reading histogram")
print(alpha.histogram())
sleep(1)
print(alpha.histogram())
sleep(1)
# for debugging
#log.addHandler(logging.StreamHandler())
# for urbanova
rundir = '/run/aqnet/opcn2/'
try:
os.makedirs(rundir)
except OSError:
if not osp.isdir(rundir):
raise
spi = spidev.SpiDev()
spi.open(0, 0)
spi.mode = 1
spi.max_speed_hz = 500000
alphasense = opc.OPCN2(spi)
alphasense.on()
#import atexit
#@atexit.register
#def cleanup():
# opc.off()
#while True:
# try:
# data = opc.histogram()
# now = time.time()
# jsondata = {}
# for k,v in data.items():