The UDC provides a high-level abstraction of the USB device.

You can use these functions to control the main device state (start/attach/wakeup).

All USB Device Interface (UDI) in USB Device Stack is based on UDC to support USB enumeration.

This documentation describes common USB Device usage based on UDC, as follow:

API Overview

Functions
static void	udc_attach (void)
	Attach device to the bus when possible. More...

static void	udc_detach (void)
	Detaches the device from the bus. More...

usb_iface_desc_t UDC_DESC_STORAGE *	udc_get_interface_desc (void)
	Returns a pointer on the current interface descriptor. More...

static bool	udc_include_vbus_monitoring (void)
	Authorizes the VBUS event. More...

static void	udc_remotewakeup (void)
	The USB driver sends a resume signal called "Upstream Resume". More...

void	udc_start (void)
	Start the USB Device stack. More...

void	udc_stop (void)
	Stop the USB Device stack. More...

static void udc_attach ( void )

inlinestatic

Attach device to the bus when possible.

Warning: If a VBUS control is included in driver, then it will attach device when an acceptable VBUS level from the host is detected.

static void udc_detach ( void )

inlinestatic

Detaches the device from the bus.

The driver must remove pull-up on USB line D- or D+.

usb_iface_desc_t UDC_DESC_STORAGE* udc_get_interface_desc ( void )

Returns a pointer on the current interface descriptor.

static bool udc_include_vbus_monitoring ( void )

inlinestatic

Authorizes the VBUS event.

See VBUS Monitoring for more details.

static void udc_remotewakeup ( void )

inlinestatic

The USB driver sends a resume signal called "Upstream Resume".

This is authorized only when the remote wakeup feature is enabled by host.

void udc_start ( void )

Start the USB Device stack.

void udc_stop ( void )

Stop the USB Device stack.

Microchip® Advanced Software Framework