Specifications

V850E2/MN4 USB CDC (Communication Device Class) Driver
R01AN0010EJ0101 Rev.1.01 Page 52 of 117
Feb 01, 2012
usbf850_getdesc
[Synopsis]
Process GET_DESCRIPTOR request.
[C language format]
void usbf850_getdesc(USB_SETUP *req_data)
[Parameters]
Parameter Description
USB_SETUP *req_data Pointer to the address storing the receive data length
[Return Value]
None
[Function]
This function is called to process standard requests that are not automatically responded by the USB function controller.
If the decoded request asks for a string descriptor, the function calls the USB data transmit processing function
(usbf850_data_send) to send a string descriptor from Endpoint0. If a descriptor other than the string descriptor is
requested, the function calls the STALL response processing function for Endpoint0 (usbf850_sendstallEP0).