def expose(self, exptime=1.0, exptype=1, expmeter=None):
# imager = self.si_imager
# """
host = self.ip
port = self.camera_port
client = SIClient (host, port)
self.logger.info("Connected to SI client")
imager = Imager(client)
self.logger.info("Connected to SI imager")
# """
self.si_imager = imager
self.si_imager.nexp = 1 # number of exposures
self.si_imager.texp = exptime # exposure time, float number
self.si_imager.nome = "image" # file name to be saved
if exptype == 0: self.si_imager.dark = True
else: self.si_imager.dark = False
self.si_imager.frametransfer = False # frame transfer?
self.si_imager.getpars = False # Get camera parameters and print on the screen
# expose until exptime or expmeter >= flux
t0 = datetime.datetime.utcnow()
elapsedtime = 0.0
flux = 0.0
if expmeter <> None:
#S reset the exposure meter
self.reset_expmeter_total()
#S begin the imaging thread
thread = threading.Thread(target=self.si_imager.do)
thread.start()
while elapsedtime < exptime:
#S we are going to query the expmeter total every second
#S probably could be finer resolution
time.sleep(1.0)
elapsedtime = (datetime.datetime.utcnow()-t0).total_seconds()
flux = self.get_expmeter_total()
self.logger.info("flux = " + str(flux))
if expmeter < flux:
self.logger.info('got to flux of '+str(flux)+', greater than expmeter: '+str(expmeter))
self.si_imager.interrupt()
#imager.retrieve_image()
break
#S this is on a level outside of the while for the elapsed time as the imager.do thread is
#S is still running. e.g., we still want to wait whether the elapsed time has gone through or
#S the expmeter has triggered the interrupt.
thread.join(60)
# time.sleep(25)
#S I don't know if this is true.. i think if we terminate it still might leave the imager.do thread alive..
#TODO, or did you test this?
if thread.isAlive():
self.logger.error("SI imaging thread timed out")
return False
else:
self.si_imager.do()
#client.disconnect()
return self.save_image(self.file_name)
def connect_si_imager(self):
client = SIClient(self.ip, self.camera_port)
self.logger.info("Connected to SI client")
imager = Imager(client)
self.logger.info("Connected to SI imager")
self.si_imager = imager
def si_imager_connect(self):
host = self.ip
port = self.camera_port
client = SIClient(host, port)
self.logger.info("Connected to SI client")
imager = Imager(client)
self.logger.info("Connected to SI imager")
return imager
def initialize(self):
client = SIClient(options.host, options.port)
self.imager = Imager(client)
def initialize(self):
host = 'localhost'
port = 2055
client = SIClient(host, port)
self.imager = Imager(client)
if __name__ == "__main__": import sys import time import os import socket from si.client import SIClient from si.imager import Imager host = "localhost" port = 2055 client = SIClient (host, port) imager = Imager (client) imager.nexp = 1 # number of exposures imager.texp = 1.0 # exposure time, float number imager.nome = "image" # file name to be saved imager.dark = False # dark frame? imager.frametransfer = False # frame transfer? imager.getpars = False # Get camera parameters and print on the screen #t0 = time.time () try: ret = "" shutter = "" if imager.dark: