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UM10503
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User manual
Rev. 1.3 — 6 July 2012
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NXP Semiconductors
UM10503
Chapter 25: LPC43xx USB API
ClrCommFeature
ErrorCode_t(*ErrorCode_t(* USBD_CDC_INIT_PARAM::ClrCommFeature)(USBD_HANDLE_T hCDC, uint16_t
feature))(USBD_HANDLE_T hCDC, uint16_t feature)
Abstract control model(ACM) subclass specific CLEAR_COMM_FEATURE request call-back
function.
This function is provided by the application software. This function gets called when host
sends a CLEAR_COMM_FEATURE request. In the call-back the application should Clears
the settings for a particular communication feature.
Parameters:
1. hCdc = Handle to CDC function driver.
2. feature = Communication feature type. See the
USB CDC class specification document
published by usb.org.
Returns:
The call back should returns ErrorCode_t type to indicate success or error condition.
Return values:
1. LPC_OK = On success.
2. ERR_USBD_UNHANDLED = Event is not handled hence pass the event to next in line.
3. ERR_USBD_xxx = For other error conditions.
Table 520. USBD_CDC_INIT_PARAM class structure
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