nrf_sniffer_ble.sh return OSError: [Errno 22] Invalid argument

[Stephane_L]

Hello,

I follow the doc to install the nrf_sniffer_for_bluetooth_le_4.1.0

- Flashing the nRF52840 dongle with nRF Connect for Desktop 

Uploading image through SDFU: 97%

Uploading image through SDFU: 98%

Uploading image through SDFU: 100%

All dfu images have been written to the target device

Failed to write: Timeout while waiting for device xxx to be attached and enumerated

Is this error OK ?

Downloading nrf_sniffer_for_bluetooth_le_4.1.0

- Update all python softwares

and run 

nrf_sniffer_ble.sh --extcap-interfaces

It crash 

extcap {version=4.1.0}{display=nRF Sniffer for Bluetooth LE}{help=www.nordicsemi.com/.../nRF-Sniffer-for-Bluetooth-LE}

Traceback (most recent call last):

  File "./nrf_sniffer_ble.py", line 818, in <module>

    extcap_interfaces()

  File "./nrf_sniffer_ble.py", line 170, in extcap_interfaces

    for interface_port in get_interfaces():

  File "./nrf_sniffer_ble.py", line 160, in get_interfaces

    devices = UART.find_sniffer()

  File "nrf_sniffer_for_bluetooth_le_4.1.0/extcap/SnifferAPI/UART.py", line 68, in find_sniffer

    reader = Packet.PacketReader(portnum=port, baudrate=rate)

  File "nrf_sniffer_for_bluetooth_le_4.1.0/extcap/SnifferAPI/Packet.py", line 74, in __init__

    self.uart = UART.Uart(portnum, baudrate)

  File "nrf_sniffer_for_bluetooth_le_4.1.0/extcap/SnifferAPI/UART.py", line 130, in __init__

    self.ser.baudrate = baudrate

  File "Library/Python/3.8/lib/python/site-packages/serial/serialutil.py", line 299, in baudrate

    self._reconfigure_port()

  File "Library/Python/3.8/lib/python/site-packages/serial/serialposix.py", line 524, in _reconfigure_port

    self._set_special_baudrate(custom_baud)

  File "Library/Python/3.8/lib/python/site-packages/serial/serialposix.py", line 225, in _set_special_baudrate    fcntl.ioctl(self.fd, IOSSIOSPEED, buf, 1)

OSError: [Errno 22] Invalid argument

macOS 12.1, python 3.8

[Stephane_L]

UPDATE.

I did the same installation on a 10.15 mac and it works. Wireshark is updated. But on Monterey its seems to be another story.

[Vidar Berg]

Hi,

Thanks for the report. I don't think I have seen this before. I will have to do some investigation and get back to you.

Best regards,

Vidar

[Vidar Berg]

It's a bit  difficult to debug as we still have not been able to replicate the issue on our end, unfortunately.  Could you try to apply this change as well:

--- a/Host/SnifferAPI/UART.py
+++ b/Host/SnifferAPI/UART.py
@@ -63,7 +63,7 @@ def find_sniffer(write_data=False):
reader = None
l_errors = [serial.SerialException, ValueError, Exceptions.LockedException]
if os.name == 'posix':
- l_errors.append(termios.error)
+ l_errors.append(termios.error, OSError)
try:
reader = Packet.PacketReader(portnum=port, baudrate=rate)
try:

?

Thanks,

[Stephane_L]

It gives an error

  File "nrf_sniffer_for_bluetooth_le_4.1.0/extcap/SnifferAPI/UART.py", line 66, in find_sniffer

    l_errors.append(termios.error, OSError)

TypeError: append() takes exactly one argument (2 given)

[Vidar Berg]

Sorry, append() only lets you add one element at a time. Can you try this instead: 

--- a/SnifferAPI/UART.py
+++ b/SnifferAPI/UART.py
@@ -61,7 +61,8 @@ def find_sniffer(write_data=False):
     for port in [x.device for x in open_ports]:
         for rate in SNIFFER_BAUDRATES:
             reader = None
-            l_errors = [serial.SerialException, ValueError, Exceptions.LockedException]
+            l_errors = [serial.SerialException, ValueError,
+                        Exceptions.LockedException, OSError]
             if os.name == 'posix':
                 l_errors.append(termios.error)
             try:

[Stephane_L]

Yes it work!

Thanks

[Vidar Berg]

Excellent! Thanks for the update. I will check if we can include this fix in our next release.