#----------------------------------------------------------------------
#   SABVABAA Hovercraft Seismic Profiling Gun Control Program
#
#  University of Bergen, Norway
#  Dept. of Earth Science
#
#  Rev  Date          By  Description
# ---------------------------------------------------------------------
#  0.1  June 8 2008  OM  Test version
#----------------------------------------------------------------------

import time
import serial
import winsound

VERSION   = "Ver. 0.1  Date: 9 June 2008"
COM_PORT  = 0		# '0' = COM1 -> On the rear of the DELL Latitude D630



#------------------------------------------------------------
# Subroutine: Fire GUNCO
#------------------------------------------------------------

def FireAirGun():
    for k in range(1):
        winsound.Beep(800, 50)
        winsound.Beep(1000, 30)
    print "Fire!", time.strftime("%a, %d %b %Y %H:%M:%S", time.gmtime())
    ser.setDTR(level=1)
    time.sleep(0.01)
    ser.setDTR(level=0)
    


#------------------------------------------------------------
#             M A I N   P R O G R A M
#------------------------------------------------------------

print '''
==============================================================
SABVABAA Hovercraft Seismic Profiling Gun Control Program

Terminate program by CTRL-C (may wait a bit)
'''
print "Version ...........:", VERSION
print "Serial port used ..: COM", int(COM_PORT + 1)
print '''
University of Bergen, Norway
Dept. of Earth Science
==============================================================
'''

#--- Open COM port for GUN control
#--- DTR -> GUN1 -> fire from 0 to 1 state
#--- RTS -> GUN2 -> ---"---

ser = serial.Serial(0)     # "0" equals serial port 1 (COM1)
ser.setDTR(level=0)

ShotInterval = int(raw_input("Shot interval [s]: "))
print "Shot interval = ", ShotInterval, "s"
print "Shooting in 5 seconds ..."
t = 4
while t > 0:
    print t
    t -= 1
    time.sleep(1)
print
FireAirGun()

#-------------- Loop eternally. Interrupt by CTRL-C
while 1:
    time.sleep(ShotInterval)
    FireAirGun()
    

ser.close()
exit()