Belkin F8E211 Guía de usuario descargar pdf (Pagina 111)

 2006, QNX Software Systems GmbH & Co. KG. usbd urb status()

USBD STATUS CRC ERR

The last packet from the endpoint contained a CRC error.

USBD STATUS BITSTUFFING

The last packet from the endpoint contained a bit-stufﬁng

violation.

USBD STATUS TOGGLE MISMATCH

The last packet from the endpoint had the wrong data-toggle

PID.

USBD STATUS STALL

The endpoint returned a STALL PID.

USBD STATUS DEV NOANSWER

Device didn’t respond to token (IN) or didn’t provide a

handshake (OUT).

USBD STATUS PID FAILURE

Check bits on PID from endpoint failed on data PID (IN) or

handshake (OUT).

USBD STATUS BAD PID

Receive PID was invalid or undeﬁned.

USBD STATUS DATA OVERRUN

The endpoint returned more data than the allowable maximum.

USBD STATUS DATA UNDERRUN

The endpoint didn’t return enough data to ﬁll the speciﬁed

buffer.

USBD STATUS BUFFER OVERRUN

During an IN, the host controller received data from the

endpoint faster than it could be written to system memory.

USBD STATUS BUFFER UNDERRUN

During an OUT, the host controller couldn’t retrieve data fast

enough.

November 2, 2006 Chapter 4 USB Library Reference 99

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Belkin F8E211 Guía de usuario Pagina 111