USBTask.c
2.38 KB
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/*
LUFA Library
Copyright (C) Dean Camera, 2017.
dean [at] fourwalledcubicle [dot] com
www.lufa-lib.org
*/
/*
Copyright 2017 Dean Camera (dean [at] fourwalledcubicle [dot] com)
Permission to use, copy, modify, distribute, and sell this
software and its documentation for any purpose is hereby granted
without fee, provided that the above copyright notice appear in
all copies and that both that the copyright notice and this
permission notice and warranty disclaimer appear in supporting
documentation, and that the name of the author not be used in
advertising or publicity pertaining to distribution of the
software without specific, written prior permission.
The author disclaims all warranties with regard to this
software, including all implied warranties of merchantability
and fitness. In no event shall the author be liable for any
special, indirect or consequential damages or any damages
whatsoever resulting from loss of use, data or profits, whether
in an action of contract, negligence or other tortious action,
arising out of or in connection with the use or performance of
this software.
*/
#define __INCLUDE_FROM_USBTASK_C
#define __INCLUDE_FROM_USB_DRIVER
#include "USBTask.h"
volatile bool USB_IsInitialized;
USB_Request_Header_t USB_ControlRequest;
#if defined(USB_CAN_BE_HOST) && !defined(HOST_STATE_AS_GPIOR)
volatile uint8_t USB_HostState;
#endif
#if defined(USB_CAN_BE_DEVICE) && !defined(DEVICE_STATE_AS_GPIOR)
volatile uint8_t USB_DeviceState;
#endif
void USB_USBTask(void)
{
#if defined(USB_CAN_BE_BOTH)
if (USB_CurrentMode == USB_MODE_Device)
USB_DeviceTask();
else if (USB_CurrentMode == USB_MODE_Host)
USB_HostTask();
#elif defined(USB_CAN_BE_HOST)
USB_HostTask();
#elif defined(USB_CAN_BE_DEVICE)
USB_DeviceTask();
#endif
}
#if defined(USB_CAN_BE_DEVICE)
static void USB_DeviceTask(void)
{
if (USB_DeviceState == DEVICE_STATE_Unattached)
return;
uint8_t PrevEndpoint = Endpoint_GetCurrentEndpoint();
Endpoint_SelectEndpoint(ENDPOINT_CONTROLEP);
if (Endpoint_IsSETUPReceived())
USB_Device_ProcessControlRequest();
Endpoint_SelectEndpoint(PrevEndpoint);
}
#endif
#if defined(USB_CAN_BE_HOST)
static void USB_HostTask(void)
{
uint8_t PrevPipe = Pipe_GetCurrentPipe();
Pipe_SelectPipe(PIPE_CONTROLPIPE);
USB_Host_ProcessNextHostState();
Pipe_SelectPipe(PrevPipe);
}
#endif