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116 lines
2.8 KiB
116 lines
2.8 KiB
16 years ago
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/*
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LUFA Library
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Copyright (C) Dean Camera, 2009.
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dean [at] fourwalledcubicle [dot] com
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www.fourwalledcubicle.com
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*/
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/*
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Copyright 2009 Dean Camera (dean [at] fourwalledcubicle [dot] com)
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Permission to use, copy, modify, and distribute this software
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and its documentation for any purpose and without fee is hereby
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granted, provided that the above copyright notice appear in all
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copies and that both that the copyright notice and this
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permission notice and warranty disclaimer appear in supporting
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documentation, and that the name of the author not be used in
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advertising or publicity pertaining to distribution of the
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software without specific, written prior permission.
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The author disclaim all warranties with regard to this
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software, including all implied warranties of merchantability
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and fitness. In no event shall the author be liable for any
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special, indirect or consequential damages or any damages
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whatsoever resulting from loss of use, data or profits, whether
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in an action of contract, negligence or other tortious action,
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arising out of or in connection with the use or performance of
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this software.
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*/
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#include "USBMode.h"
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#if defined(USB_CAN_BE_HOST)
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#include "Host.h"
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uint8_t USB_Host_WaitMS(uint8_t MS)
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{
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bool BusSuspended = USB_Host_IsBusSuspended();
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uint8_t ErrorCode = HOST_WAITERROR_Successful;
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USB_INT_Clear(USB_INT_HSOFI);
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USB_Host_ResumeBus();
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while (MS)
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{
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if (USB_INT_HasOccurred(USB_INT_HSOFI))
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{
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USB_INT_Clear(USB_INT_HSOFI);
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MS--;
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}
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if ((USB_IsConnected == false) || (USB_CurrentMode == USB_MODE_DEVICE))
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{
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ErrorCode = HOST_WAITERROR_DeviceDisconnect;
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break;
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}
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if (Pipe_IsError() == true)
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{
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Pipe_ClearError();
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ErrorCode = HOST_WAITERROR_PipeError;
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break;
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}
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if (Pipe_IsStalled() == true)
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{
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Pipe_ClearStall();
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ErrorCode = HOST_WAITERROR_SetupStalled;
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break;
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}
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}
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if (BusSuspended)
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USB_Host_SuspendBus();
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return ErrorCode;
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}
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void USB_Host_ResetDevice(void)
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{
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bool BusSuspended = USB_Host_IsBusSuspended();
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USB_INT_Disable(USB_INT_DDISCI);
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USB_Host_ResetBus();
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while (!(USB_Host_IsResetBusDone()));
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USB_INT_Clear(USB_INT_HSOFI);
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USB_Host_ResumeBus();
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for (uint8_t MSRem = 10; MSRem != 0; MSRem--)
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{
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/* Workaround for powerless-pullup devices. After a USB bus reset,
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all disconnection interrupts are supressed while a USB frame is
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looked for - if it is found within 10ms, the device is still
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present. */
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if (USB_INT_HasOccurred(USB_INT_HSOFI))
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{
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USB_INT_Clear(USB_INT_DDISCI);
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break;
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}
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_delay_ms(1);
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}
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if (BusSuspended)
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USB_Host_SuspendBus();
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USB_INT_Enable(USB_INT_DDISCI);
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}
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#endif
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