Bezüglich Hans Petter Selasky's Nachricht vom 17.09.2013 07:14 (localtime): > Hi, > > Check using usbdump -i usbusX -f Y -s 65536 -vvv > > what is going on. Maybe some USB transfers are returning zero length data > from the chip.
Thanks for your help! I can't really read the numbers, but these 4 actions look all the time, whe no connection is open: 08:39:19.889658 usbus1.4 SUBM-INTR-EP=00000089,SPD=HIGH,NFR=1,SLEN=0,IVAL=2 frame[0] READ 16 bytes flags 0xa <SHORT_XFER_OK|PIPE_BOF|0> status 0xcb023 <OPEN|TRANSFERRING|STARTED|SHORT_XFER_OK|BDMA_ENABLE|BDMA_SETUP|CAN_CANCEL_IMMED|DOING_CALLBACK|0> 08:39:19.891655 usbus1.4 DONE-INTR-EP=00000089,SPD=HIGH,NFR=1,SLEN=8,IVAL=2,ERR=0 frame[0] READ 5 bytes 0000 C1 C1 C1 01 55 -- -- -- -- -- -- -- -- -- -- -- |....U | flags 0xa <SHORT_XFER_OK|PIPE_BOF|0> status 0xeb021 <OPEN|STARTED|SHORT_XFER_OK|BDMA_ENABLE|BDMA_SETUP|CURR_DMA_SET|CAN_CANCEL_IMMED|DOING_CALLBACK|0> 08:39:19.891658 usbus1.4 SUBM-INTR-EP=00000089,SPD=HIGH,NFR=1,SLEN=0,IVAL=2 frame[0] READ 16 bytes flags 0xa <SHORT_XFER_OK|PIPE_BOF|0> status 0xeb023 <OPEN|TRANSFERRING|STARTED|SHORT_XFER_OK|BDMA_ENABLE|BDMA_SETUP|CURR_DMA_SET|CAN_CANCEL_IMMED|DOING_CALLBACK|0> 08:39:19.893656 usbus1.4 DONE-INTR-EP=00000089,SPD=HIGH,NFR=1,SLEN=8,IVAL=2,ERR=0 frame[0] READ 5 bytes 0000 C1 C1 C1 01 55 -- -- -- -- -- -- -- -- -- -- -- |....U | flags 0xa <SHORT_XFER_OK|PIPE_BOF|0> status 0xcb021 <OPEN|STARTED|SHORT_XFER_OK|BDMA_ENABLE|BDMA_SETUP|CAN_CANCEL_IMMED|DOING_CALLBACK|0> Thanks, -Harry
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