#
# Example program for d5000_serial module
# Eli Fulkerson
#

import d5000_serial

def main():

    print "Watch Temperature"
    print "-----------------"
    print "Connect to thermocouple on COM1 and take continuous readings,"
    print "reporting any changes to the console."
    print "-----------------"
    print "Starting Example... press control-c to exit"

    # our sensor is plugged into COM1 at 9600 baud... other options are specifiable if needed
    # 0 is COM1, 1 is COM2, etc etc etc.  On unix 0 would be /dev/sd0 (I think), 1 would be /dev/sd1 etc...
    sensor = d5000_serial.sensor("-p 0 -r 9600")

    # our module is at address #1
    module = d5000_serial.module(sensor, 1)

    min = 1000  # minimum temperature sensed so far
    max = 0     # maximum temperature sensed so far
    last = 0    # second-to-most-recent reading

    # run forever, use control-c to break out
    while 1:

        # because we specified address 1, this is equivalent to $RD1
        data = module.sendcmd("RD")

        # turn the ugly string that we were returned into a floating point number
        current = d5000_serial.to_float(data)

        if current < min:
            min = current

        if current > max:
            max = current

        if current > last:
            direction = "UP....."
        else:
            direction = "DOWN..."

        if not last == current:
            print "Temperature " + direction + " current - " + str(current) + "   min - " + str(min) + "   max - " + str(max)

        last = current

main()