Yes there are BULK IN packets prior to typing the AT command. But
nothing after that.
Here is a text version of the filtered wireshark dump with the last
URB_BULK in (frame 37) and the last frame 41 with the URB_BULK OUT for
the "A" in AT.
Regards
Ashok
Frame 37: 64 bytes on wire (512 bits), 64 bytes captured (512 bits)
USB URB
URB id: 0x00000000f741ca80
URB type: URB_SUBMIT ('S')
URB transfer type: URB_BULK (0x03)
Endpoint: 0x84, Direction: IN
Device: 11
URB bus id: 2
Device setup request: not relevant ('-')
Data: not present ('<')
URB sec: 1338063533
URB usec: 251540
URB status: Operation now in progress (-EINPROGRESS) (-115)
URB length [bytes]: 128
Data length [bytes]: 0
[bInterfaceClass: CDC_DATA (0x0a)]
Frame Time Source Destination Protocol
LEN Port Info
New Column
36.404580 host 11.4 USB
64 0x00000004 URB_BULK in
38
Frame 38: 64 bytes on wire (512 bits), 64 bytes captured (512 bits)
USB URB
URB id: 0x00000000f741ca00
URB type: URB_SUBMIT ('S')
URB transfer type: URB_BULK (0x03)
Endpoint: 0x84, Direction: IN
Device: 11
URB bus id: 2
Device setup request: not relevant ('-')
Data: not present ('<')
URB sec: 1338063533
URB usec: 251543
URB status: Operation now in progress (-EINPROGRESS) (-115)
URB length [bytes]: 128
Data length [bytes]: 0
[bInterfaceClass: CDC_DATA (0x0a)]
Frame Time Source Destination Protocol
LEN Port Info
New Column
36.404641 host 11.0 USB
71 0x00000000 URB_CONTROL out
39
Frame 39: 71 bytes on wire (568 bits), 71 bytes captured (568 bits)
USB URB
URB id: 0x00000000d241c080
URB type: URB_SUBMIT ('S')
URB transfer type: URB_CONTROL (0x02)
Endpoint: 0x00, Direction: OUT
Device: 11
URB bus id: 2
Device setup request: relevant (0)
Data: present (0)
URB sec: 1338063533
URB usec: 251604
URB status: Operation now in progress (-EINPROGRESS) (-115)
URB length [bytes]: 7
Data length [bytes]: 7
[Response in: 40]
[bInterfaceClass: CDC_DATA (0x0a)]
URB setup
Leftover Capture Data: 00c20100000008
Frame Time Source Destination Protocol
LEN Port Info
New Column
36.407450 11.0 host USB
64 0x0000ffff URB_CONTROL out
40
Frame 40: 64 bytes on wire (512 bits), 64 bytes captured (512 bits)
USB URB
URB id: 0x00000000d241c080
URB type: URB_COMPLETE ('C')
URB transfer type: URB_CONTROL (0x02)
Endpoint: 0x00, Direction: OUT
Device: 11
URB bus id: 2
Device setup request: not relevant ('-')
Data: not present ('>')
URB sec: 1338063533
URB usec: 254413
URB status: Success (0)
URB length [bytes]: 7
Data length [bytes]: 0
[Request in: 39]
[Time from request: 0.002809000 seconds]
[bInterfaceClass: CDC_DATA (0x0a)]
Frame Time Source Destination Protocol
LEN Port Info
New Column
Error 54.960047 host 11.5 Ethernet
65 0x00000005 URB_BULK out[Malformed Packet]
41
Frame 41: 65 bytes on wire (520 bits), 65 bytes captured (520 bits)
USB URB
URB id: 0x00000000d58d5d00
URB type: URB_SUBMIT ('S')
URB transfer type: URB_BULK (0x03)
Endpoint: 0x05, Direction: OUT
Device: 11
URB bus id: 2
Device setup request: not relevant ('-')
Data: present (0)
URB sec: 1338063551
URB usec: 807010
URB status: Operation now in progress (-EINPROGRESS) (-115)
URB length [bytes]: 1
Data length [bytes]: 1
[bInterfaceClass: CDC_DATA (0x0a)]
[Malformed Packet: Ethernet]
On Sun, Jun 3, 2012 at 4:13 PM, Oliver Neukum <oliver@xxxxxxxxxx> wrote:
> Am Sonntag, 3. Juni 2012, 22:08:29 schrieb Ashok Rao:
>>
>> With microcom - you can keep sending AT commands - no response from
>> the device (nothing echoed on the screen) and wireshark shows only
>> URB_BULK out - nothing coming back from the device.
>> With picocom after sending an "A" no other transmission can be seen on wireshark
>
> Do you see the submission of the BULK IN package?
>
> Regards
> Oliver
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