> I think the -4 error is a device not found error, so it looks like the > problem is that the firmware isn't starting up properly after it is > uploaded to the device. > > If you have time, you could try doing some packet capture with usbmon in > wireshark.
pcap attached
During the trace I got error -4 again:
sr: fx2lafw: Unable to get version info: -4.
sr: fx2lafw: Failed to retrieve firmware version information.
sr: fx2lafw: Unable to open device.
sr: session: sr_session_dev_add: dev_open failed (-1)
Failed to use device.
sr: fx2lafw: Closing device 0 on 1.2 interface 0.
Response seems to be malformed...
No. Time Source Destination Protocol
Length Info
84 49.700384 3.0 host USB
64 GET DESCRIPTOR Response STRING[Malformed Packet]
Frame 84: 64 bytes on wire (512 bits), 64 bytes captured (512 bits)
Arrival Time: Apr 26, 2012 18:11:28.194847000 CEST
Epoch Time: 1335456688.194847000 seconds
[Time delta from previous captured frame: 0.000178000 seconds]
[Time delta from previous displayed frame: 0.000178000 seconds]
[Time since reference or first frame: 49.700384000 seconds]
Frame Number: 84
Frame Length: 64 bytes (512 bits)
Capture Length: 64 bytes (512 bits)
[Frame is marked: False]
[Frame is ignored: False]
[Protocols in frame: usb]
USB URB
URB id: 0x00000000d41f93c0
URB type: URB_COMPLETE ('C')
URB transfer type: URB_CONTROL (0x02)
Endpoint: 0x80, Direction: IN
1... .... = Direction: IN (1)
.000 0000 = Endpoint value: 0
Device: 3
URB bus id: 1
Device setup request: not relevant ('-')
Data: present (0)
URB sec: 1335456688
URB usec: 194847
URB status: Broken pipe (-EPIPE) (-32)
URB length [bytes]: 0
Data length [bytes]: 0
[Request in: 83]
[Time from request: 0.000178000 seconds]
[bInterfaceClass: VENDOR_SPECIFIC (0xff)]
[Malformed Packet: USB]
[Expert Info (Error/Malformed): Malformed Packet (Exception occurred)]
[Message: Malformed Packet (Exception occurred)]
[Severity level: Error]
[Group: Malformed]
-- Martin
usbtrace-1.pcap
Description: application/cap
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