#!/usr/bin/python

# part of the Dalsa1M60 package
# a module for verifying the temperature of the Dalsa 1M60
#
# The serial command 'vt' is sent to the camera. The camera responds as follow
s
#    > vt
#    Camera Temperature on Digitzer Board: 47.2 Celsius
#    Camera Temperature on Sensor Board: 39.4 Celsius
#    OK>
#
# Written by Aidan Brooks. 5th May 2010
import os, subprocess

def VerifyTemperature( serial_cmd_location ):
    # get default values for the digitizer and sensor temperatures
    digitizerTemp = 0.0
    sensorTemp = 0.0

    # run the subprocess to call the vt command
    process = subprocess.Popen(serial_cmd_location + ' vt', shell=True, stdout
 = subprocess.PIPE)

    # get the response
    serial_cmd_response = process.communicate()
    temperatureString = serial_cmd_response[0]
    command_success = serial_cmd_response[1]

    # if there are no standard errors then get the values of the response
    if (command_success == None):

        # Locate the substring that corresponds to the Digitizer Board Tempera
ture
        substring = 'Digitizer Board: '
        digitLoc = temperatureString.find(substring)

        # if the substring exists then check that there is a value after it
        if (digitLoc > 0):
            if ( (digitLoc + len(substring) + 4) < len(temperatureString)):
                tempdigitLoc = digitLoc + len(substring)
                digitizerTempSTR = temperatureString[tempdigitLoc:(tempdigitLo
c + 4)]

                # check that the string is numeric
                try:
                    digitizerTemp = float(digitizerTempSTR)
                finally:
                    pass
   

                    
        # Locate the substring that corresponds to the Sensor Board Temperatur
e
        substring = 'Sensor Board: '
        sensLoc = temperatureString.find(substring)

        # if the substring exists then check that there is a value after it
        if (sensLoc > 0):
            if ( (sensLoc + len(substring) + 4) < len(temperatureString)):
                tempsensLoc = sensLoc + len(substring)
                sensorTempSTR = temperatureString[tempsensLoc:(tempsensLoc + 4
)]

                # check that the string is numeric
                try:
                    sensorTemp = float(sensorTempSTR)   
                finally:
                    pass
                    

        # define the return values
        temperatures = [digitizerTemp, sensorTemp] 
        return(temperatures)