Re: [Tutor] error_connection_refused
Hello, Thank you for your reply. Please read underlines. Le 05/06/2012 23:12, Alan Gauld a écrit : On 05/06/12 12:53, BILAL Mustapha wrote: Hello, Hi, Its best not to hijack somebody else's thread coz it messes up all the threaded mail/news readers out there. (At least you changed the subject though!). Please start with a fresh mail for a new topic. Oops, sorry I didn't pay attention to it.. I am trying to lunch a small python program but I am always getting this error: How are you launching it? From a batch file or shell script? From another Python program? From the Python prompt? s.connect((IP, PORT)) File /usr/lib/python2.7/socket.py, line 224, in meth return getattr(self._sock,name)(*args) socket.error: [Errno 111] Connection refused What's weird that it doesn't even print the line test sending data so how it could get to s.connect() without passing through this line!! It sounds like you might be using a Python prompt and not reloading the module after making changes. importing a second time won't work as Python knows you already have it and ignores it. You must use reload() for changes to take effect. If thats not it then we need more details about what you are doing. I actually found the solution which was somehow trivial, I was not listening to an open port so I changed the port and it worked fine. Thank you again Regards HTH, ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
[Tutor] connecting to USB
Hello, I am working to connect to a serial link (USB). In order to do that I have to write this command: sudo ../../tools/stm32w/serialdump-linux -b115200 -d1 (keeping in mind dat*serialdump-linux*, which is in the path, is not a folder, it's an executable) To get to the root, I have used: returncode = subprocess.call([/usr/bin/sudo, /usr/bin/id]) Then to connect to the USB through the command above I tried the following: usb = Popen(['../../tools/stm32w/serialdump-linux','-b115200','-d1'], stdout=PIPE, stdin=PIPE, stderr=STDOUT) usb.communicate()[0] But I am getting an error, it's considering that serialdump-linux as a folder!! Any help how I can run the command? Many thanks ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] connecting to USB
Le 06/06/2012 11:02, BILAL Mustapha a écrit : Hello, I am working to connect to a serial link (USB). In order to do that I have to write this command: sudo ../../tools/stm32w/serialdump-linux -b115200 -d1 (keeping in mind dat*serialdump-linux*, which is in the path, is not a folder, it's an executable) To get to the root, I have used: returncode = subprocess.call([/usr/bin/sudo, /usr/bin/id]) Then to connect to the USB through the command above I tried the following: usb = Popen(['../../tools/stm32w/serialdump-linux','-b115200','-d1'], stdout=PIPE, stdin=PIPE, stderr=STDOUT) usb.communicate()[0] But I am getting an error, it's considering that serialdump-linux as a folder!! Any help how I can run the command? Many thanks ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor I resolved the issue, you can do the following: First method: args = (sudo, ../../tools/stm32w/serialdump-linux, -b115200, -d1) usb = Popen(args, stdout=PIPE, stdin=PIPE) usb.wait() usb.communicate()[0] Second method: cmd = 'sudo ../../tools/stm32w/serialdump-linux -b115200 -d1' os.system(cmd) you can run it using cmd and os or using Popen if you need to use stdout and stdin in your application (which is my case) PS. -b115200 -d1 are two options related to USB so you can change the whole command and use any option you would like to. Regards ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
[Tutor] error_connection_refused
Hello, I am trying to lunch a small python program but I am always getting this error: s.connect((IP, PORT)) File /usr/lib/python2.7/socket.py, line 224, in meth return getattr(self._sock,name)(*args) socket.error: [Errno 111] Connection refused What's weird that it doesn't even print the line test sending data so how it could get to s.connect() without passing through this line!! Here is the code: #!/usr/bin/python import socket import thread import time from threading import Thread import threading import sys IP = 130.190.31.167 PADDING = a * 1000 DATA = PADDING + this is sentence number = PORT = 8000 killed = False count=0 def main(): print(the network manager process is created) send_data() def send_data(): *print(test sending data)* s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) *s.connect((IP, PORT))* while killed==False: count= count+1 sent = s.send(DATA+ str(count) + \n) if sent == 0: print 'The connection is died' killed=True s.close() if __name__ == __main__: main() Many thanks ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
[Tutor] packets_USB_python
Hello, I am beginner with python and I recently started to use it in order to achieve a small part of something I am working on. I have 2 processes (process 1 and process 2). I am wondering if you can provide me with some example or sample code of how I can do the following: - Process 2 receives icmpv6 (or any packet) from process1 and retransmit it to a serial link (USB) - Process 2 receives icmpv6 (or any packet) from the serial link (USB) and restransmit it to process 1. I had tried to write some code to, at least, ping but apparently I am missing something. Many thanks ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] packets_USB_python
Le 04/06/2012 16:10, Alan Gauld a écrit : On 04/06/12 14:58, BILAL Mustapha wrote: - Process 2 receives icmpv6 (or any packet) from process1 and retransmit it to a serial link (USB) - Process 2 receives icmpv6 (or any packet) from the serial link (USB) and restransmit it to process 1. Oddly, Python does not have ICMP support in its standard library however there is an icmpv6 module on Activestate: http://code.activestate.com/recipes/409689-icmplib-library-for-creating-and-reading-icmp-pack/ And there is also a module for reading/writing to usb ports (pyusb)... http://pyusb.sourceforge.net/docs/1.0/tutorial.html hth, Thank you for your reply and for the useful links. However Can't I use the popen() to lunch the process1 and write on its standard input? same thing for the process1 when it wants to sends infos(or packets) to process2 then it will use its standard output! Best regards ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
