Run the Alphasense OPC-N2 for 10 seconds in a loop.

alphasense-example.py

"""
Simple script to run the Alphasense OPC-N2 using the py-opc library.

Written by David H Hagan | March 24, 2016
"""

import spidev
import opc
from time import sleep

# Set up a spidev instance
spi = spidev.SpiDev()

# Open the connection
spi.open(0, 0)

# Set the key variables
spi.mode = 1
spi.max_speed_hz = 500000

# Set up an instance of the OPCN2 class
alpha = opc.OPCN2(spi)

# Exit with ctrl+c
while True:
    alpha.on()
    
    # Sleep for 10 seconds
    sleep(10)
    
    # Turn off the OPC
    alpha.off()
    
    # Wait for 3 seconds before starting the cycle over
    sleep(3)