USB issue - Libusb_interrupt_transfer

[DAFlippers]

If USB_CTRL_TIMEOUT set to <50ms then first tx transfer usually returns 0 bytes transferred and timeout but data is actually sent out on USB.

During Read the data can be seen on the USB but is sometimes not returned by libusb_interrupt_transfer - see second read below.

Debug below from program and corresponding USB analyser. You can see first tx return 0 and timeout but data is sent out on USB.

More detail can be provided if required.

Libusb-1.0 is latest version. Program works flawlessly on other platforms running ubuntu/suse.

David

DEBUG FROM PROGRAM RUNNING ON RPi

Calling usb_interrupt_transfer with weydev->udev: 0x1921cc0 ,ep 0x0003, buffer 03 00 00 00 00 00h ..., Len 0040h Timeout 10ms
TX Interrupt transfer returned -7 and transferred 0
Write returned -7
RX Interrupt transfer returned 0 and transferred 64
Read 4 expect buf[1]=0 buf[0] 03 buf[1] 00 buf[2] 04 buf [3] 00 buf[4] 00 loop 0
Read returned 0
WS is 4

Calling usb_interrupt_transfer with weydev->udev: 0x1921cc0 ,ep 0x0003, buffer 03 01 00 00 00 00h ..., Len 0040h Timeout 10ms
TX Interrupt transfer returned 0 and transferred 64
Write returned 0
RX Interrupt transfer returned -7 and transferred 0
Read 5 expect buf[1]=1 buf[0] 00 buf[1] 00 buf[2] 00 buf [3] 00 buf[4] 00 loop 0 returned -7
RX Interrupt transfer returned -7 and transferred 0
Read 5 expect buf[1]=1 buf[0] 00 buf[1] 00 buf[2] 00 buf [3] 00 buf[4] 00 loop 1 returned -7
RX Interrupt transfer returned -7 and transferred 0
Read 5 expect buf[1]=1 buf[0] 00 buf[1] 00 buf[2] 00 buf [3] 00 buf[4] 00 loop 2 returned -7
RX Interrupt transfer returned -7 and transferred 0
Read 5 expect buf[1]=1 buf[0] 00 buf[1] 00 buf[2] 00 buf [3] 00 buf[4] 00 loop 3 returned -7
RX Interrupt transfer returned -7 and transferred 0
Read 5 expect buf[1]=1 buf[0] 00 buf[1] 00 buf[2] 00 buf [3] 00 buf[4] 00 loop 4 returned -7
RX Interrupt transfer returned -7 and transferred 0
Read 5 expect buf[1]=1 buf[0] 00 buf[1] 00 buf[2] 00 buf [3] 00 buf[4] 00 loop 5 returned -7
RX Interrupt transfer returned -7 and transferred 0
Read 5 expect buf[1]=1 buf[0] 00 buf[1] 00 buf[2] 00 buf [3] 00 buf[4] 00 loop 6 returned -7
RX Interrupt transfer returned -7 and transferred 0
Read 5 expect buf[1]=1 buf[0] 00 buf[1] 00 buf[2] 00 buf [3] 00 buf[4] 00 loop 7 returned -7
RX Interrupt transfer returned -7 and transferred 0
Read 5 expect buf[1]=1 buf[0] 00 buf[1] 00 buf[2] 00 buf [3] 00 buf[4] 00 loop 8 returned -7
RX Interrupt transfer returned -7 and transferred 0
Read 5 expect buf[1]=1 buf[0] 00 buf[1] 00 buf[2] 00 buf [3] 00 buf[4] 00 loop 9 returned -7
RX Interrupt transfer returned -7 and transferred 0
Read 5 expect buf[1]=1 buf[0] 00 buf[1] 00 buf[2] 00 buf [3] 00 buf[4] 00 loop 10 returned -7
RX Interrupt transfer returned -7 and transferred 0
Read 5 expect buf[1]=1 buf[0] 00 buf[1] 00 buf[2] 00 buf [3] 00 buf[4] 00 loop 11 returned -7
RX Interrupt transfer returned -7 and transferred 0
Read 5 expect buf[1]=1 buf[0] 00 buf[1] 00 buf[2] 00 buf [3] 00 buf[4] 00 loop 12 returned -7
RX Interrupt transfer returned -7 and transferred 0
Read 5 expect buf[1]=1 buf[0] 00 buf[1] 00 buf[2] 00 buf [3] 00 buf[4] 00 loop 13 returned -7
RX Interrupt transfer returned -7 and transferred 0
Read 5 expect buf[1]=1 buf[0] 00 buf[1] 00 buf[2] 00 buf [3] 00 buf[4] 00 loop 14 returned -7
RX Interrupt transfer returned -7 and transferred 0
Read 5 expect buf[1]=1 buf[0] 00 buf[1] 00 buf[2] 00 buf [3] 00 buf[4] 00 loop 15 returned -7
Read returned -1

Calling usb_interrupt_transfer with weydev->udev: 0x1921cc0 ,ep 0x0003, buffer 03 01 3c 00 00 00h ..., Len 0040h Timeout 10ms
TX Interrupt transfer returned 0 and transferred 64
Write returned 0
RX Interrupt transfer returned 0 and transferred 64
Read 4 expect buf[1]=1 buf[0] 03 buf[1] 01 buf[2] 00 buf [3] 00 buf[4] 00 loop 0
Read returned 0

Calling usb_interrupt_transfer with weydev->udev: 0x1921cc0 ,ep 0x0003, buffer 03 01 78 00 00 00h ..., Len 0040h Timeout 10ms
TX Interrupt transfer returned 0 and transferred 64
Write returned 0
RX Interrupt transfer returned 0 and transferred 64
Read 4 expect buf[1]=1 buf[0] 03 buf[1] 01 buf[2] 00 buf [3] 00 buf[4] 00 loop 0
Read returned 0

Calling usb_interrupt_transfer with weydev->udev: 0x1921cc0 ,ep 0x0003, buffer 03 01 b4 00 00 00h ..., Len 0040h Timeout 10ms
TX Interrupt transfer returned 0 and transferred 64
Write returned 0
RX Interrupt transfer returned 0 and transferred 64
Read 4 expect buf[1]=1 buf[0] 03 buf[1] 01 buf[2] 00 buf [3] 00 buf[4] 00 loop 0
Read returned 0

Calling usb_interrupt_transfer with weydev->udev: 0x1921cc0 ,ep 0x0003, buffer 03 01 f0 00 00 00h ..., Len 0040h Timeout 10ms
TX Interrupt transfer returned 0 and transferred 64
Write returned 0
RX Interrupt transfer returned 0 and transferred 64
Read 4 expect buf[1]=1 buf[0] 03 buf[1] 01 buf[2] 00 buf [3] 00 buf[4] 00 loop 0
Read returned 0

Calling usb_interrupt_transfer with weydev->udev: 0x1921cc0 ,ep 0x0003, buffer 03 01 2c 01 00 00h ..., Len 0040h Timeout 10ms
TX Interrupt transfer returned 0 and transferred 64
Write returned 0
RX Interrupt transfer returned 0 and transferred 64
Read 4 expect buf[1]=1 buf[0] 03 buf[1] 01 buf[2] 00 buf [3] 00 buf[4] 00 loop 0
Read returned 0

Calling usb_interrupt_transfer with weydev->udev: 0x1921cc0 ,ep 0x0003, buffer 03 01 68 01 00 00h ..., Len 0040h Timeout 10ms
TX Interrupt transfer returned 0 and transferred 64
Write returned 0
RX Interrupt transfer returned 0 and transferred 64
Read 4 expect buf[1]=1 buf[0] 03 buf[1] 01 buf[2] 48 buf [3] 03 buf[4] 0d loop 0
Read returned 0

Calling usb_interrupt_transfer with weydev->udev: 0x1921cc0 ,ep 0x0003, buffer 03 01 a4 01 00 00h ..., Len 0040h Timeout 10ms
TX Interrupt transfer returned 0 and transferred 64
Write returned 0
RX Interrupt transfer returned 0 and transferred 64
Read 4 expect buf[1]=1 buf[0] 03 buf[1] 01 buf[2] 00 buf [3] 00 buf[4] 00 loop 0
Read returned 0

Calling usb_interrupt_transfer with weydev->udev: 0x1921cc0 ,ep 0x0003, buffer 03 01 e0 01 00 00h ..., Len 0040h Timeout 10ms
TX Interrupt transfer returned 0 and transferred 64
Write returned 0
RX Interrupt transfer returned 0 and transferred 64
Read 4 expect buf[1]=1 buf[0] 03 buf[1] 01 buf[2] 00 buf [3] 00 buf[4] 00 loop 0
Read returned 0

Calling usb_interrupt_transfer with weydev->udev: 0x1921cc0 ,ep 0x0003, buffer 03 01 1c 02 00 00h ..., Len 0040h Timeout 10ms
TX Interrupt transfer returned 0 and transferred 64
Write returned 0
RX Interrupt transfer returned 0 and transferred 64
Read 4 expect buf[1]=1 buf[0] 03 buf[1] 01 buf[2] 00 buf [3] 00 buf[4] 00 loop 0
Read returned 0

Calling usb_interrupt_transfer with weydev->udev: 0x1921cc0 ,ep 0x0003, buffer 03 01 58 02 00 00h ..., Len 0040h Timeout 10ms
TX Interrupt transfer returned 0 and transferred 64
Write returned 0
RX Interrupt transfer returned 0 and transferred 64
Read 4 expect buf[1]=1 buf[0] 03 buf[1] 01 buf[2] 00 buf [3] 00 buf[4] 00 loop 0
Read returned 0

Calling usb_interrupt_transfer with weydev->udev: 0x1921cc0 ,ep 0x0003, buffer 03 01 94 02 00 00h ..., Len 0040h Timeout 10ms
TX Interrupt transfer returned 0 and transferred 64
Write returned 0
RX Interrupt transfer returned 0 and transferred 64
Read 4 expect buf[1]=1 buf[0] 03 buf[1] 01 buf[2] 00 buf [3] 00 buf[4] 00 loop 0
Read returned 0

Calling usb_interrupt_transfer with weydev->udev: 0x1921cc0 ,ep 0x0003, buffer 03 01 d0 02 00 00h ..., Len 0040h Timeout 10ms
TX Interrupt transfer returned 0 and transferred 64
Write returned 0
RX Interrupt transfer returned 0 and transferred 64
Read 4 expect buf[1]=1 buf[0] 03 buf[1] 01 buf[2] 00 buf [3] 00 buf[4] 00 loop 0
Read returned 0

Calling usb_interrupt_transfer with weydev->udev: 0x1921cc0 ,ep 0x0003, buffer 03 01 0c 03 00 00h ..., Len 0040h Timeout 10ms
TX Interrupt transfer returned 0 and transferred 64
Write returned 0
RX Interrupt transfer returned 0 and transferred 64
Read 4 expect buf[1]=1 buf[0] 03 buf[1] 01 buf[2] 00 buf [3] 00 buf[4] 00 loop 0
Read returned 0

ELLISYS USB ANALYSER OUTPUT - FILTERED FOR ENDPOINT 3

Item Device Endpoint Interface Speed Payload Time
Start of Frame (8,467) FS 1,670 -> 1,944 0.000 871 383
OUT transaction 4 3 ACK FS 64 bytes (03 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00) 8.466 503 700
IN transaction 4 3 ACK FS 64 bytes (03 00 04 00 00 00 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF BD A3) 8.466 875 483
Start of Frame (11) FS 1,945 -> 1,955 8.467 500 250
OUT transaction 4 3 ACK FS 64 bytes (03 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00) 8.477 875 017
Start of Frame (337) FS 1,956 -> 244 8.478 499 767
OUT transaction 4 3 ACK FS 64 bytes (03 01 3C 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00) 8.814 860 233
Start of Frame (6) FS 245 -> 250 8.815 485 000
IN transaction 4 3 ACK FS 64 bytes (03 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 BD A3) 8.820 610 000
Start of Frame (11) FS 251 -> 261 8.821 484 733
OUT transaction 4 3 ACK FS 64 bytes (03 01 78 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00) 8.831 609 500
Start of Frame (7) FS 262 -> 268 8.832 484 250
IN transaction 4 3 ACK FS 64 bytes (03 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 BD A3) 8.838 609 200
Start of Frame (11) FS 269 -> 279 8.839 483 950
OUT transaction 4 3 ACK FS 64 bytes (03 01 B4 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00) 8.849 608 717
Start of Frame (7) FS 280 -> 286 8.850 483 450
IN transaction 4 3 ACK FS 64 bytes (03 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 BD A3) 8.856 608 417
Start of Frame (11) FS 287 -> 297 8.857 483 150
OUT transaction 4 3 ACK FS 64 bytes (03 01 F0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00) 8.868 232 900
Start of Frame (7) FS 298 -> 304 8.868 482 667
IN transaction 4 3 ACK FS 64 bytes (03 01 00 00 00 00 01 00 48 03 0D 02 01 00 48 03 0D 02 02 00 80 07 1C 02 03 00 48 03 0D 02 03 00 48 03 0D 02 04 00 80 02 00 02 04 00 80 02 00 02 00 00 00 00 00 00 00 00 00 00 00 00 00 00 BD A3) 8.874 607 617
Start of Frame (11) FS 305 -> 315 8.875 482 367
OUT transaction 4 3 ACK FS 64 bytes (03 01 2C 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00) 8.885 732 117
Start of Frame (7) FS 316 -> 322 8.886 481 883
IN transaction 4 3 ACK FS 64 bytes (03 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 01 00 48 03 0D 02 01 00 48 03 0D 02 02 00 80 07 1C 02 03 00 BD A3) 8.892 606 833
Start of Frame (11) FS 323 -> 333 8.893 481 567
OUT transaction 4 3 ACK FS 64 bytes (03 01 68 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00) 8.903 731 350
Start of Frame (7) FS 334 -> 340 8.904 481 100
IN transaction 4 3 ACK FS 64 bytes (03 01 48 03 0D 02 03 00 48 03 0D 02 04 00 80 02 00 02 04 00 80 02 00 02 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 BD A3) 8.910 606 033
Start of Frame (11) FS 341 -> 351 8.911 480 783
OUT transaction 4 3 ACK FS 64 bytes (03 01 A4 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00) 8.921 730 567
Start of Frame (7) FS 352 -> 358 8.922 480 317
IN transaction 4 3 ACK FS 64 bytes (03 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 BD A3) 8.928 605 250
Start of Frame (11) FS 359 -> 369 8.929 480 000
OUT transaction 4 3 ACK FS 64 bytes (03 01 E0 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00) 8.939 729 767
Start of Frame (7) FS 370 -> 376 8.940 479 517
IN transaction 4 3 ACK FS 64 bytes (03 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 BD A3) 8.946 604 450
Start of Frame (11) FS 377 -> 387 8.947 479 200
OUT transaction 4 3 ACK FS 64 bytes (03 01 1C 02 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00) 8.957 728 983
Start of Frame (8) FS 388 -> 395 8.958 478 733
IN transaction 4 3 ACK FS 64 bytes (03 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 BD A3) 8.965 603 600
Start of Frame (11) FS 396 -> 406 8.966 478 367
OUT transaction 4 3 ACK FS 64 bytes (03 01 58 02 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00) 8.976 728 150
Start of Frame (6) FS 407 -> 412 8.977 477 900
IN transaction 4 3 ACK FS 64 bytes (03 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 BD A3) 8.982 602 883
Start of Frame (11) FS 413 -> 423 8.983 477 633
OUT transaction 4 3 ACK FS 64 bytes (03 01 94 02 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00) 8.993 727 400
Start of Frame (7) FS 424 -> 430 8.994 477 150
IN transaction 4 3 ACK FS 64 bytes (03 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 BD A3) 9.000 602 100
Start of Frame (11) FS 431 -> 441 9.001 476 850
OUT transaction 4 3 ACK FS 64 bytes (03 01 D0 02 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00) 9.011 726 600
Start of Frame (7) FS 442 -> 448 9.012 476 350
IN transaction 4 3 ACK FS 64 bytes (03 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 BD A3) 9.018 601 317
Start of Frame (17) FS 449 -> 465 9.019 476 050
OUT transaction 4 3 ACK FS 64 bytes (03 01 0C 03 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00) 9.036 350 533
Start of Frame (7) FS 466 -> 472 9.036 475 300
IN transaction 4 3 ACK FS 64 bytes (03 01 00 00 00 00 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF BD A3) 9.042 600 267
Start of Frame (8,411) FS 473 -> 691 9.043 475 000
OUT transaction 4 3 ACK FS 64 bytes (03 02 02 2B 00 C8 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00) 17.453 109 717
Start of Frame FS 692 17.454 106 250
OUT transaction 4 3 ACK FS 64 bytes (03 02 02 2B 00 C8 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00) 17.454 231 467
Start of Frame (124) FS 693 -> 816 17.455 106 200
IN transaction 4 3 ACK FS 64 bytes (03 02 03 2C 00 C8 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF BD A3) 17.578 976 000
Start of Frame (7) FS 817 -> 823 17.579 100 767
OUT transaction 4 3 ACK FS 64 bytes (03 03 02 2B 00 C8 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00) 17.585 103 933
Start of Frame FS 824 17.586 100 467
OUT transaction 4 3 ACK FS 64 bytes (03 03 02 2B 00 C8 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00) 17.586 225 683
Start of Frame (2,392) FS 825 -> 1,168 17.587 100 433
OUT transaction 4 3 ACK FS 64 bytes (03 02 02 2B 80 8B 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00) 19.978 745 767
Start of Frame (4) FS 1,169 -> 1,172 19.978 995 550
IN transaction 4 3 ACK FS 64 bytes (03 02 03 2C 80 8B FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF BD A3) 19.982 120 633
Start of Frame (4) FS 1,173 -> 1,176 19.982 995 367
OUT transaction 4 3 ACK FS 64 bytes (03 03 02 2B 80 8B 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00) 19.986 245 433
Start of Frame (10,194) FS 1,177 -> 1,130 19.986 995 183

[DAFlippers]

Just to add that i have checked this on more than one RPi.

David

[DAFlippers]

I have repeated testing following update to Linux version 3.2.27+ #24 PREEMPT and I still see the same problem with libusb_interrupt_transfer calls so this issue is not resolved.

My setup is very simple: RPi, Wired Ethernet connection, HDMI -> DVI connection to monitor and single USB connection to a USB 1:4 deskswitch - HID combined keyboard/mouse that my program 'talks' to on endpoint 3.

Note that I can add debug to my program and I have an external USB analyser (ellisys USB explorer) to capture the USB traffic should any testing/further information be required - just let me know what you require and I can do it.

David

[popcornmix]

I'm afraid I don't know enough to usefully comment. I'll try and get naren/gsh to look at this.

I don't know if it's related to this issue:
#72

I have found sdcard driver disabling interrupts for >100ms. You can avoid this with command line options:
sdhci-bcm2708.missing_status=0 sdhci-bcm2708.sync_after_dma=0
but it does cause problems with some sdcards. You could also try the patch in the pull request, but I don't think that is safe either.

[DAFlippers]

I should have added that my cmdline.txt file wasupdated to:

dwc_otg.microframe_schedule=1, sdhci-bcm2708.missing_status=0, sdhci-bcm2708.sync_after_dma=0 dwc_otg.lpm_enable=0 rpitestmode=1 console=ttyAMA0,115200 kgdboc=ttyAMA0,115200 console=tty1 root=/dev/mmcblk0p2 rootfstype=ext4 rootwait

so this is not the fix.

David

Could you tell us a bit about the device you're talking to?

On 20/08/2012, DAFlippers notifications@github.com wrote:

I should have added that my cmdline.txt file wasupdated to:

dwc_otg.microframe_schedule=1, sdhci-bcm2708.missing_status=0,
sdhci-bcm2708.sync_after_dma=0 dwc_otg.lpm_enable=0 rpitestmode=1
console=ttyAMA0,115200 kgdboc=ttyAMA0,115200 console=tty1
root=/dev/mmcblk0p2 rootfstype=ext4 rootwait

so this is not the fix.

David

---

Reply to this email directly or view it on GitHub:
#79 (comment)

Sent from my mobile device

[DAFlippers]

It is a 4 port KVM switch that has USB keyboard and Mouse input and 4 USB ports that can be connected to 4 different computers http://www.weytec.com/en/products/wey-keyboards/usb-deskswitch-ii-14/overview/.

I am using endpoint 3 to communicate with the device. Libusb_control_transfer() calls have never failed on RPi but libusb_interrupt_transfer have a very high failure rate so much so I have rarely successfully completed the 15 or so calls used to get configuration from the device at startup.

I have just installed the software on a pico ITX Atom based board running Fedora and it runs without issue. The only platform so far to have an issue is RPi.

David

[popcornmix]

gsh thinks you might be seeing an instance of his split transactions getting lost issue:

"Yeah I still think it's just the OUT case of the split interrupts...

Only useful information would be them putting an external hub in and then capturing the data between the pi and the hub, this should then show the failing splits"

[DAFlippers]

I placed a powered hub between RPi and USB switch and captured USB data between RPi and hub twice. I then removed the hub and captured data once.

Program log and USB logs posted in https://github.com/DAFlippers/RPi-data - forgive me if not posted correctly - I'm just learning the ropes.

You'll need the ellisys software http://www.ellisys.com/products/usbex200/download.php to view the .ufo files.

David

[grigorig]

DAFlippers, have you really added these commas into cmdline.txt? This might be harmful.

[DAFlippers]

D'oh!

The perils of copy paste and not checking...

Unfortunately stil the same result when commas removed.

David

[ghollingworth]

Not sure the traces are particularly useful... The captures need to be at the same time and preferably interleaved! I've got a LeCroy analyser for this, its quite useful!

There are clearly failing SPLIT IN transactions recorded but I didn't find any SPLIT OUT transactions

Doesn't help that the GUI is a bit difficult to navigate and very very slow to do anything!

Will assume for the moment it's the same problem as already being seen and will have to try again when we have a fix

[DAFlippers]

Thanks for input.

I guess I could edit the program debug and USB trace together but I find if I filter ep 3 it is relatively easy to cross reference. Note the debug and trace should be for the same transactions, i.e. the files numbered 01 were logged at the same time but it looks like I screwed up on the nohub :(. The program is writing and reading 64 bytes per message so it isn't massive but it just doesn't see the read data although I can see the data on the bus so RPi is instigating the read but the call isn't returning it.

I'll rpi-update and repeat making sure logs tie up.

David

[ghollingworth]

David,

Thanks, I think one of the main problems is driving the software, can
you give me instructions in how to just filter out those packets? I
was trying to get it to ignore all the incomplete in packets but
couldn't find anything useful

Also which device/endpoint is it that the errors are occuring on?

Thanks

Gordon (back from two weeks in Spain which is why the slow response!)

Gordon

On 26/08/2012, DAFlippers notifications@github.com wrote:

Thanks for input.

I guess I could edit the program debug and USB trace together but I find if
I filter ep 3 it is relatively easy to cross reference. Note the debug and
trace should be for the same transactions, i.e. the files numbered 01 were
logged at the same time but it looks like I screwed up on the nohub :(. The
program is writing and reading 64 bytes per message so it isn't massive but
it just doesn't see the read data although I can see the data on the bus so
RPi is instigating the read but the call isn't returning it.

I'll rpi-update and repeat making sure logs tie up.

David

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