sysadmin/scripts/arduino.py

#!/usr/bin/env python

""" arduino reader by afx """

import time, serial
from sys import argv

def query_arduino():
    global serial
    fo = open('/etc/scripts/.arduino.db', 'wb')
    try:
       serial = serial.Serial('/dev/ttyACM0', 9600)
       serial.write('1')
       query = serial.readline().strip('\r\n').split()
    except:
       query = ("0", "0")
    fo.write(','.join(query))
    fo.close()

def print_arduino(pmode):
    fr = open('/etc/scripts/.arduino.db', 'r+')
    rquery = fr.read(100);
    print(rquery.split(',')[pmode])
    fr.close()

if __name__ == "__main__":
    mode = argv
    try:
        if mode[1] == 'temp':
            print_arduino(0)
        elif mode[1] == 'humid':
             print_arduino(1)
        elif mode[1] == 'query':
             query_arduino()
    except IndexError:
        print('Usage: script.py [temp] [humid]')