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271 lines
6.4 KiB
271 lines
6.4 KiB
/*
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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 "LowLevel.h"
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#if (!defined(USB_HOST_ONLY) && !defined(USB_DEVICE_ONLY))
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volatile uint8_t USB_CurrentMode = USB_MODE_NONE;
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#endif
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#if !defined(USE_STATIC_OPTIONS)
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volatile uint8_t USB_Options;
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#endif
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volatile bool FrameElapsed;
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void USB_Init(
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#if defined(USB_CAN_BE_BOTH)
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const uint8_t Mode
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#endif
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#if (defined(USB_CAN_BE_BOTH) && !defined(USE_STATIC_OPTIONS))
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,
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#elif (!defined(USB_CAN_BE_BOTH) && defined(USE_STATIC_OPTIONS))
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void
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#endif
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#if !defined(USE_STATIC_OPTIONS)
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const uint8_t Options
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#endif
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)
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{
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USB_ShutDown();
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#if defined(USB_CAN_BE_BOTH)
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USB_CurrentMode = Mode;
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#endif
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#if !defined(USE_STATIC_OPTIONS)
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USB_Options = Options;
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#endif
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#if defined(USB_CAN_BE_HOST)
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USB_ControlPipeSize = PIPE_CONTROLPIPE_DEFAULT_SIZE;
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#endif
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#if defined(USB_DEVICE_ONLY) && defined(USB_FULL_CONTROLLER)
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UHWCON |= (1 << UIMOD);
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#elif defined(USB_HOST_ONLY)
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UHWCON &= ~(1 << UIMOD);
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#elif defined(USB_CAN_BE_BOTH)
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if (Mode == USB_MODE_UID)
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{
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UHWCON |= (1 << UIDE);
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USB_INT_Clear(USB_INT_IDTI);
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USB_INT_Enable(USB_INT_IDTI);
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USB_CurrentMode = USB_GetUSBModeFromUID();
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}
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else if (Mode == USB_MODE_DEVICE)
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{
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UHWCON |= (1 << UIMOD);
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}
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else if (Mode == USB_MODE_HOST)
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{
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UHWCON &= ~(1 << UIMOD);
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}
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else
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{
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EVENT_USB_InitFailure(USB_INITERROR_NoUSBModeSpecified);
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return;
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}
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#endif
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USB_ResetInterface();
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#if defined(USB_FULL_CONTROLLER) || defined(USB_MODIFIED_FULL_CONTROLLER)
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USB_OTGPAD_On();
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#endif
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USB_IsInitialized = true;
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sei();
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}
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void USB_ShutDown(void)
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{
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if (USB_IsConnected)
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EVENT_USB_Disconnect();
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USB_Detach();
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USB_INT_DisableAllInterrupts();
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USB_INT_ClearAllInterrupts();
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USB_IsConnected = false;
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USB_IsInitialized = false;
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#if defined(USB_CAN_BE_HOST)
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USB_HostState = HOST_STATE_Unattached;
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#endif
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#if defined(USB_CAN_BE_DEVICE)
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USB_ConfigurationNumber = 0;
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#endif
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#if defined(CAN_BE_BOTH)
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USB_CurrentMode = USB_MODE_NONE;
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#endif
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USB_Interface_Disable();
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USB_PLL_Off();
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#if defined(USB_FULL_CONTROLLER) || defined(USB_MODIFIED_FULL_CONTROLLER)
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USB_OTGPAD_Off();
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#endif
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#if defined(USB_CAN_BE_BOTH)
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UHWCON &= ~(1 << UIDE);
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#endif
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}
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void USB_ResetInterface(void)
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{
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USB_INT_DisableAllInterrupts();
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USB_INT_ClearAllInterrupts();
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FrameElapsed = false;
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USB_IsConnected = false;
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#if defined(USB_CAN_BE_HOST)
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USB_HostState = HOST_STATE_Unattached;
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#endif
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#if defined(USB_CAN_BE_DEVICE)
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USB_ConfigurationNumber = 0;
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USB_IsSuspended = false;
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USB_RemoteWakeupEnabled = false;
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USB_CurrentlySelfPowered = false;
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#endif
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if (!(USB_Options & USB_OPT_MANUAL_PLL))
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{
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#if defined(USB_MODIFIED_FULL_CONTROLLER)
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PLLFRQ = ((1 << PLLUSB) | (1 << PDIV3) | (1 << PDIV1));
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#endif
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USB_PLL_On();
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while (!(USB_PLL_IsReady()));
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}
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USB_Interface_Reset();
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#if defined(USB_CAN_BE_BOTH)
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if (UHWCON & (1 << UIDE))
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{
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USB_INT_Clear(USB_INT_IDTI);
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USB_INT_Enable(USB_INT_IDTI);
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USB_CurrentMode = USB_GetUSBModeFromUID();
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}
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#endif
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if (!(USB_Options & USB_OPT_REG_DISABLED))
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USB_REG_On();
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USB_CLK_Unfreeze();
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#if (defined(USB_CAN_BE_DEVICE) && (defined(USB_FULL_CONTROLLER) || defined(USB_MODIFIED_FULL_CONTROLLER)))
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if (USB_CurrentMode == USB_MODE_DEVICE)
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{
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if (USB_Options & USB_DEVICE_OPT_LOWSPEED)
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USB_Device_SetLowSpeed();
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else
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USB_Device_SetHighSpeed();
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USB_INT_Enable(USB_INT_VBUS);
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}
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#endif
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#if (defined(USB_CAN_BE_DEVICE) && !defined(FIXED_CONTROL_ENDPOINT_SIZE))
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if (USB_CurrentMode == USB_MODE_DEVICE)
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{
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USB_Descriptor_Device_t* DeviceDescriptorPtr;
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if (CALLBACK_USB_GetDescriptor((DTYPE_Device << 8), 0, (void*)&DeviceDescriptorPtr) != NO_DESCRIPTOR)
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{
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#if defined(USE_RAM_DESCRIPTORS)
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USB_ControlEndpointSize = DeviceDescriptorPtr->Endpoint0Size;
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#elif defined(USE_EEPROM_DESCRIPTORS)
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USB_ControlEndpointSize = eeprom_read_byte(&DeviceDescriptorPtr->Endpoint0Size);
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#else
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USB_ControlEndpointSize = pgm_read_byte(&DeviceDescriptorPtr->Endpoint0Size);
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#endif
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}
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}
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#endif
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USB_Attach();
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#if defined(USB_DEVICE_ONLY)
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USB_INT_Enable(USB_INT_SUSPEND);
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USB_INT_Enable(USB_INT_EORSTI);
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#if defined(CONTROL_ONLY_DEVICE)
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UENUM = ENDPOINT_CONTROLEP;
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#endif
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#elif defined(USB_HOST_ONLY)
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USB_Host_HostMode_On();
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USB_Host_VBUS_Auto_Off();
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USB_OTGPAD_Off();
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USB_Host_VBUS_Manual_Enable();
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USB_Host_VBUS_Manual_On();
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USB_INT_Enable(USB_INT_SRPI);
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USB_INT_Enable(USB_INT_BCERRI);
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#else
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if (USB_CurrentMode == USB_MODE_DEVICE)
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{
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USB_INT_Enable(USB_INT_SUSPEND);
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USB_INT_Enable(USB_INT_EORSTI);
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#if defined(CONTROL_ONLY_DEVICE)
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UENUM = ENDPOINT_CONTROLEP;
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#endif
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}
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else if (USB_CurrentMode == USB_MODE_HOST)
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{
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USB_Host_HostMode_On();
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USB_Host_VBUS_Auto_Off();
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USB_OTGPAD_Off();
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USB_Host_VBUS_Manual_Enable();
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USB_Host_VBUS_Manual_On();
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USB_INT_Enable(USB_INT_SRPI);
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USB_INT_Enable(USB_INT_BCERRI);
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}
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#endif
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}
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