USB Device stack callback structure.

#include <em_usb.h>

Data Fields
const USBD_UsbResetCb_TypeDef	usbReset
	Called whenever USB reset signalling is detected on the USB port.

const USBD_DeviceStateChangeCb_TypeDef	usbStateChange
	Called whenever the device change state.

const USBD_SetupCmdCb_TypeDef	setupCmd
	Called on each setup request received from host.

const USBD_IsSelfPoweredCb_TypeDef	isSelfPowered
	Called whenever the device stack needs to query if the device is currently self- or bus-powered.

const USBD_SofIntCb_TypeDef	sofInt
	Called at each SOF interrupt.

USB Device stack callback structure.

Callback functions used by the device stack to signal events or query status to/from the application. See USBD_Init_TypeDef . Assign members to NULL if your application don't need a specific callback.

Field Documentation

◆ usbReset

const USBD_UsbResetCb_TypeDef USBD_Callbacks_TypeDef::usbReset

Called whenever USB reset signalling is detected on the USB port.

◆ usbStateChange

const USBD_DeviceStateChangeCb_TypeDef USBD_Callbacks_TypeDef::usbStateChange

Called whenever the device change state.

◆ setupCmd

const USBD_SetupCmdCb_TypeDef USBD_Callbacks_TypeDef::setupCmd

Called on each setup request received from host.

◆ isSelfPowered

const USBD_IsSelfPoweredCb_TypeDef USBD_Callbacks_TypeDef::isSelfPowered

Called whenever the device stack needs to query if the device is currently self- or bus-powered.

Applies to devices which can operate in both modes.

◆ sofInt

const USBD_SofIntCb_TypeDef USBD_Callbacks_TypeDef::sofInt

Called at each SOF interrupt.

If NULL, the device stack will not enable the SOF interrupt.

USBD_Callbacks_TypeDef Struct Reference USB Stacks > USB Device