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346 lines
8.6 KiB
346 lines
8.6 KiB
/*
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LUFA Library
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Copyright (C) Dean Camera, 2010.
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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 2010 Dean Camera (dean [at] fourwalledcubicle [dot] com)
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Permission to use, copy, modify, distribute, and sell this
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software and its documentation for any purpose is hereby granted
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without fee, provided that the above copyright notice appear in
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all 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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#define __INCLUDE_FROM_USB_DRIVER
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#include "../HighLevel/USBMode.h"
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#if defined(USB_CAN_BE_HOST)
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#define __INCLUDE_FROM_HOST_C
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#include "Host.h"
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void USB_Host_ProcessNextHostState(void)
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{
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uint8_t ErrorCode = HOST_ENUMERROR_NoError;
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uint8_t SubErrorCode = HOST_ENUMERROR_NoError;
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static uint16_t WaitMSRemaining;
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static uint8_t PostWaitState;
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switch (USB_HostState)
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{
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case HOST_STATE_WaitForDevice:
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if (WaitMSRemaining)
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{
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if ((SubErrorCode = USB_Host_WaitMS(1)) != HOST_WAITERROR_Successful)
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{
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USB_HostState = PostWaitState;
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ErrorCode = HOST_ENUMERROR_WaitStage;
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break;
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}
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if (!(--WaitMSRemaining))
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USB_HostState = PostWaitState;
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}
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break;
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case HOST_STATE_Powered:
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WaitMSRemaining = HOST_DEVICE_SETTLE_DELAY_MS;
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USB_HostState = HOST_STATE_Powered_WaitForDeviceSettle;
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break;
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case HOST_STATE_Powered_WaitForDeviceSettle:
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if (WaitMSRemaining--)
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{
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_delay_ms(1);
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break;
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}
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else
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{
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USB_Host_VBUS_Manual_Off();
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USB_OTGPAD_On();
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USB_Host_VBUS_Auto_Enable();
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USB_Host_VBUS_Auto_On();
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USB_HostState = HOST_STATE_Powered_WaitForConnect;
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}
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break;
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case HOST_STATE_Powered_WaitForConnect:
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if (USB_INT_HasOccurred(USB_INT_DCONNI))
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{
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USB_INT_Clear(USB_INT_DCONNI);
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USB_INT_Clear(USB_INT_DDISCI);
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USB_INT_Clear(USB_INT_VBERRI);
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USB_INT_Enable(USB_INT_VBERRI);
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USB_Host_ResumeBus();
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Pipe_ClearPipes();
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HOST_TASK_NONBLOCK_WAIT(100, HOST_STATE_Powered_DoReset);
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}
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break;
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case HOST_STATE_Powered_DoReset:
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USB_Host_ResetDevice();
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HOST_TASK_NONBLOCK_WAIT(200, HOST_STATE_Powered_ConfigPipe);
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break;
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case HOST_STATE_Powered_ConfigPipe:
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Pipe_ConfigurePipe(PIPE_CONTROLPIPE, EP_TYPE_CONTROL,
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PIPE_TOKEN_SETUP, ENDPOINT_CONTROLEP,
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PIPE_CONTROLPIPE_DEFAULT_SIZE, PIPE_BANK_SINGLE);
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if (!(Pipe_IsConfigured()))
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{
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ErrorCode = HOST_ENUMERROR_PipeConfigError;
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SubErrorCode = 0;
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break;
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}
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USB_HostState = HOST_STATE_Default;
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break;
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case HOST_STATE_Default:
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USB_ControlRequest = (USB_Request_Header_t)
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{
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.bmRequestType = (REQDIR_DEVICETOHOST | REQTYPE_STANDARD | REQREC_DEVICE),
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.bRequest = REQ_GetDescriptor,
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.wValue = (DTYPE_Device << 8),
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.wIndex = 0,
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.wLength = 8,
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};
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uint8_t DataBuffer[8];
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if ((SubErrorCode = USB_Host_SendControlRequest(DataBuffer)) != HOST_SENDCONTROL_Successful)
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{
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ErrorCode = HOST_ENUMERROR_ControlError;
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break;
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}
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USB_ControlPipeSize = DataBuffer[offsetof(USB_Descriptor_Device_t, Endpoint0Size)];
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USB_Host_ResetDevice();
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HOST_TASK_NONBLOCK_WAIT(200, HOST_STATE_Default_PostReset);
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break;
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case HOST_STATE_Default_PostReset:
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Pipe_ConfigurePipe(PIPE_CONTROLPIPE, EP_TYPE_CONTROL,
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PIPE_TOKEN_SETUP, ENDPOINT_CONTROLEP,
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USB_ControlPipeSize, PIPE_BANK_SINGLE);
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if (!(Pipe_IsConfigured()))
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{
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ErrorCode = HOST_ENUMERROR_PipeConfigError;
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SubErrorCode = 0;
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break;
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}
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USB_ControlRequest = (USB_Request_Header_t)
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{
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.bmRequestType = (REQDIR_HOSTTODEVICE | REQTYPE_STANDARD | REQREC_DEVICE),
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.bRequest = REQ_SetAddress,
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.wValue = USB_HOST_DEVICEADDRESS,
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.wIndex = 0,
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.wLength = 0,
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};
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if ((SubErrorCode = USB_Host_SendControlRequest(NULL)) != HOST_SENDCONTROL_Successful)
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{
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ErrorCode = HOST_ENUMERROR_ControlError;
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break;
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}
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HOST_TASK_NONBLOCK_WAIT(100, HOST_STATE_Default_PostAddressSet);
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break;
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case HOST_STATE_Default_PostAddressSet:
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USB_Host_SetDeviceAddress(USB_HOST_DEVICEADDRESS);
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EVENT_USB_Host_DeviceEnumerationComplete();
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USB_HostState = HOST_STATE_Addressed;
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break;
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}
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if ((ErrorCode != HOST_ENUMERROR_NoError) && (USB_HostState != HOST_STATE_Unattached))
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{
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EVENT_USB_Host_DeviceEnumerationFailed(ErrorCode, SubErrorCode);
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USB_Host_VBUS_Auto_Off();
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EVENT_USB_Host_DeviceUnattached();
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USB_ResetInterface();
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}
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}
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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_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_HostState == HOST_STATE_Unattached) || (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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static 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_IsBusResetComplete()));
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USB_Host_ResumeBus();
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USB_INT_Clear(USB_INT_HSOFI);
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for (uint8_t MSRem = 10; MSRem != 0; MSRem--)
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{
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/* Workaround for powerless-pull-up devices. After a USB bus reset,
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all disconnection interrupts are suppressed 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_HSOFI);
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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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uint8_t USB_Host_SetDeviceConfiguration(const uint8_t ConfigNumber)
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{
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USB_ControlRequest = (USB_Request_Header_t)
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{
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.bmRequestType = (REQDIR_HOSTTODEVICE | REQTYPE_STANDARD | REQREC_DEVICE),
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.bRequest = REQ_SetConfiguration,
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.wValue = ConfigNumber,
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.wIndex = 0,
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.wLength = 0,
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};
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Pipe_SelectPipe(PIPE_CONTROLPIPE);
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return USB_Host_SendControlRequest(NULL);
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}
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uint8_t USB_Host_GetDeviceDescriptor(void* const DeviceDescriptorPtr)
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{
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USB_ControlRequest = (USB_Request_Header_t)
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{
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.bmRequestType = (REQDIR_DEVICETOHOST | REQTYPE_STANDARD | REQREC_DEVICE),
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.bRequest = REQ_GetDescriptor,
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.wValue = (DTYPE_Device << 8),
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.wIndex = 0,
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.wLength = sizeof(USB_Descriptor_Device_t),
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};
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Pipe_SelectPipe(PIPE_CONTROLPIPE);
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return USB_Host_SendControlRequest(DeviceDescriptorPtr);
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}
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uint8_t USB_Host_GetDeviceStringDescriptor(const uint8_t Index,
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void* const Buffer,
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const uint8_t BufferLength)
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{
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USB_ControlRequest = (USB_Request_Header_t)
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{
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.bmRequestType = (REQDIR_DEVICETOHOST | REQTYPE_STANDARD | REQREC_DEVICE),
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.bRequest = REQ_GetDescriptor,
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.wValue = (DTYPE_String << 8) | Index,
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.wIndex = 0,
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.wLength = BufferLength,
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};
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Pipe_SelectPipe(PIPE_CONTROLPIPE);
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return USB_Host_SendControlRequest(Buffer);
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}
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uint8_t USB_Host_ClearPipeStall(uint8_t EndpointNum)
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{
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if (Pipe_GetPipeToken() == PIPE_TOKEN_IN)
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EndpointNum |= ENDPOINT_DESCRIPTOR_DIR_IN;
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USB_ControlRequest = (USB_Request_Header_t)
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{
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.bmRequestType = (REQDIR_HOSTTODEVICE | REQTYPE_STANDARD | REQREC_ENDPOINT),
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.bRequest = REQ_ClearFeature,
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.wValue = FEATURE_ENDPOINT_HALT,
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.wIndex = EndpointNum,
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.wLength = 0,
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};
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Pipe_SelectPipe(PIPE_CONTROLPIPE);
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return USB_Host_SendControlRequest(NULL);
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}
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#endif
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