Hi,
The code in this tutorial is for Python2 (and it works, I just tested), I got the following error using Python3:
Traceback (most recent call last):
File "timelapse.py", line 48, in newText
self.logger.info("new Text "+ tvp.name.decode() + " for device "+ tvp.device.decode())
AttributeError: 'str' object has no attribute 'decode'
Which is not the same error as yours...
So I wonder how did you install the Pyindi client wrapper: you have to use pip now, the repo given in the tutorial is no longer maintained.
pip install pyindi-client
or pip3 if you use python3.
See
here
for more info.
Now I've got no newMessage from the driver when running the script in Python2, so not sure what's going on in your case...
While the initial post was being reviewed by admin, I solved the peoblem, I'll post my python3 version of the tutorial:
import sys, time, logging
import PyIndi
import io
class IndiClient(PyIndi.BaseClient):
device=None
imgIdx=0
def __init__(self):
super(IndiClient, self).__init__()
self.logger = logging.getLogger('PyQtIndi.IndiClient')
self.logger.info('creating an instance of PyQtIndi.IndiClient')
def newDevice(self, d):
self.logger.info("new device " + d.getDeviceName())
if d.getDeviceName() == "CCD Simulator":
self.logger.info("Set new device CCD Simulator!")
# save reference to the device in member variable
self.device = d
def newProperty(self, p):
self.logger.info("new property "+ p.getName() +
" for device "+ p.getDeviceName())
if (self.device is not None
and p.getName() == "CONNECTION"
and p.getDeviceName() == self.device.getDeviceName()):
self.logger.info("Got property CONNECTION for CCD Simulator!")
# connect to device
self.connectDevice(self.device.getDeviceName())
# set BLOB mode to BLOB_ALSO
self.setBLOBMode(1, self.device.getDeviceName(), None)
if p.getName() == "CCD_EXPOSURE":
# take first exposure
self.takeExposure()
def removeProperty(self, p):
self.logger.info("remove property "+ p.getName() +
" for device "+ p.getDeviceName())
def newBLOB(self, bp):
self.logger.info("new BLOB "+ bp.name)
# get image data
img = bp.getblobdata()
# write image data to StringIO buffer
blobfile = io.BytesIO(img)
# open a file and save buffer to disk
with open("frame"+str(self.imgIdx)+".fit", "wb") as f:
f.write(blobfile.getvalue())
self.imgIdx+=1
# start new exposure for timelapse images!
self.takeExposure()
def newSwitch(self, svp):
self.logger.info ("new Switch "+ svp.name.decode() +
" for device "+ svp.device.decode())
def newNumber(self, nvp):
self.logger.info("new Number "+ nvp.name +
" for device "+ nvp.device)
def newText(self, tvp):
self.logger.info("new Text "+ tvp.name.decode() +
" for device "+ tvp.device.decode())
def newLight(self, lvp):
self.logger.info("new Light "+ lvp.name.decode() +
" for device "+ lvp.device.decode())
def newMessage(self, d, m):
self.logger.info("new Message "+ d.messageQueue(m).decode())
def serverConnected(self):
print("Server connected ("+self.getHost()+":"+str(self.getPort())+")")
def serverDisconnected(self, code):
self.logger.info("Server disconnected (exit code = "+str(code)
+","+str(self.getHost())+":"+str(self.getPort())+")")
"""
Now application related methods
"""
def takeExposure(self):
self.logger.info("<<<<<<<< Exposure >>>>>>>>>")
# get current exposure time
exp = self.device.getNumber("CCD_EXPOSURE")
# set exposure time to 5 seconds
exp[0].value = 5
# send new exposure time to server/device
self.sendNewNumber(exp)
#Configure logger
logging.basicConfig(format='%(asctime)s %(message)s', level=logging.INFO)
# instantiate the client
indiclient=IndiClient()
# set indi server localhost and port 7624
#indiclient.setServer("192.168.0.73",7624)
indiclient.setServer("localhost",7624)
# connect to indi server
print("Connecting and waiting 2secs")
if (not(indiclient.connectServer())):
print("No indiserver running on "+indiclient.getHost()+":"+
str(indiclient.getPort())+" - Try to run")
print(" indiserver indi_simulator_telescope indi_simulator_ccd")
sys.exit(1)
time.sleep(1)
# start endless loop, client works asynchron in background
while True:
time.sleep(1)
#One can now open images:
#from astropy.io import fits
#hdulist = fits.open('input.fits')
#hdulist.info()
#plt.imshow(hdulist[0].data)
#plt.show()
#del hdul[0].data
#hdulist.close
PS: any comment on how to add cooling periods for the ccd between exposure, or simply writing better python code (avoid polling) would be much appreciated
so it waits some seconds before it resets the exposure timer.
Where does the code poll? At the moment the member functions of the IndiBaseClient are called asynchronous. You just could add a signal handler to terminate the program/endless loop properly.