--- /dev/null
+/*\r
+ LUFA Library\r
+ Copyright (C) Dean Camera, 2011.\r
+\r
+ dean [at] fourwalledcubicle [dot] com\r
+ www.lufa-lib.org\r
+*/\r
+\r
+/*\r
+ Copyright 2011 Dean Camera (dean [at] fourwalledcubicle [dot] com)\r
+\r
+ Permission to use, copy, modify, distribute, and sell this\r
+ software and its documentation for any purpose is hereby granted\r
+ without fee, provided that the above copyright notice appear in\r
+ all copies and that both that the copyright notice and this\r
+ permission notice and warranty disclaimer appear in supporting\r
+ documentation, and that the name of the author not be used in\r
+ advertising or publicity pertaining to distribution of the\r
+ software without specific, written prior permission.\r
+\r
+ The author disclaim all warranties with regard to this\r
+ software, including all implied warranties of merchantability\r
+ and fitness. In no event shall the author be liable for any\r
+ special, indirect or consequential damages or any damages\r
+ whatsoever resulting from loss of use, data or profits, whether\r
+ in an action of contract, negligence or other tortious action,\r
+ arising out of or in connection with the use or performance of\r
+ this software.\r
+*/\r
+\r
+#define __INCLUDE_FROM_USB_DRIVER\r
+#include "../USBMode.h"\r
+\r
+#if defined(USB_CAN_BE_HOST)\r
+\r
+#define __INCLUDE_FROM_HOST_C\r
+#include "Host.h"\r
+\r
+void USB_Host_ProcessNextHostState(void)\r
+{\r
+ uint8_t ErrorCode = HOST_ENUMERROR_NoError;\r
+ uint8_t SubErrorCode = HOST_ENUMERROR_NoError;\r
+\r
+ static uint16_t WaitMSRemaining;\r
+ static uint8_t PostWaitState;\r
+\r
+ switch (USB_HostState)\r
+ {\r
+ case HOST_STATE_WaitForDevice:\r
+ if (WaitMSRemaining)\r
+ {\r
+ if ((SubErrorCode = USB_Host_WaitMS(1)) != HOST_WAITERROR_Successful)\r
+ {\r
+ USB_HostState = PostWaitState;\r
+ ErrorCode = HOST_ENUMERROR_WaitStage;\r
+ break;\r
+ }\r
+\r
+ if (!(--WaitMSRemaining))\r
+ USB_HostState = PostWaitState;\r
+ }\r
+\r
+ break;\r
+ case HOST_STATE_Powered:\r
+ WaitMSRemaining = HOST_DEVICE_SETTLE_DELAY_MS;\r
+\r
+ USB_HostState = HOST_STATE_Powered_WaitForDeviceSettle;\r
+ break;\r
+ case HOST_STATE_Powered_WaitForDeviceSettle:\r
+ if (WaitMSRemaining--)\r
+ {\r
+ _delay_ms(1);\r
+ break;\r
+ }\r
+ else\r
+ {\r
+ USB_Host_VBUS_Manual_Off();\r
+\r
+ USB_OTGPAD_On();\r
+ USB_Host_VBUS_Auto_Enable();\r
+ USB_Host_VBUS_Auto_On();\r
+\r
+ USB_HostState = HOST_STATE_Powered_WaitForConnect;\r
+ }\r
+\r
+ break;\r
+ case HOST_STATE_Powered_WaitForConnect:\r
+ if (USB_INT_HasOccurred(USB_INT_DCONNI))\r
+ {\r
+ USB_INT_Clear(USB_INT_DCONNI);\r
+ USB_INT_Clear(USB_INT_DDISCI);\r
+\r
+ USB_INT_Clear(USB_INT_VBERRI);\r
+ USB_INT_Enable(USB_INT_VBERRI);\r
+\r
+ USB_Host_ResumeBus();\r
+ Pipe_ClearPipes();\r
+\r
+ HOST_TASK_NONBLOCK_WAIT(100, HOST_STATE_Powered_DoReset);\r
+ }\r
+\r
+ break;\r
+ case HOST_STATE_Powered_DoReset:\r
+ USB_Host_ResetDevice();\r
+\r
+ HOST_TASK_NONBLOCK_WAIT(200, HOST_STATE_Powered_ConfigPipe);\r
+ break;\r
+ case HOST_STATE_Powered_ConfigPipe:\r
+ Pipe_ConfigurePipe(PIPE_CONTROLPIPE, EP_TYPE_CONTROL,\r
+ PIPE_TOKEN_SETUP, ENDPOINT_CONTROLEP,\r
+ PIPE_CONTROLPIPE_DEFAULT_SIZE, PIPE_BANK_SINGLE);\r
+\r
+ if (!(Pipe_IsConfigured()))\r
+ {\r
+ ErrorCode = HOST_ENUMERROR_PipeConfigError;\r
+ SubErrorCode = 0;\r
+ break;\r
+ }\r
+\r
+ USB_HostState = HOST_STATE_Default;\r
+ break;\r
+ case HOST_STATE_Default:\r
+ USB_ControlRequest = (USB_Request_Header_t)\r
+ {\r
+ .bmRequestType = (REQDIR_DEVICETOHOST | REQTYPE_STANDARD | REQREC_DEVICE),\r
+ .bRequest = REQ_GetDescriptor,\r
+ .wValue = (DTYPE_Device << 8),\r
+ .wIndex = 0,\r
+ .wLength = 8,\r
+ };\r
+\r
+ uint8_t DataBuffer[8];\r
+\r
+ if ((SubErrorCode = USB_Host_SendControlRequest(DataBuffer)) != HOST_SENDCONTROL_Successful)\r
+ {\r
+ ErrorCode = HOST_ENUMERROR_ControlError;\r
+ break;\r
+ }\r
+\r
+ USB_ControlPipeSize = DataBuffer[offsetof(USB_Descriptor_Device_t, Endpoint0Size)];\r
+\r
+ USB_Host_ResetDevice();\r
+\r
+ HOST_TASK_NONBLOCK_WAIT(200, HOST_STATE_Default_PostReset);\r
+ break;\r
+ case HOST_STATE_Default_PostReset:\r
+ Pipe_ConfigurePipe(PIPE_CONTROLPIPE, EP_TYPE_CONTROL,\r
+ PIPE_TOKEN_SETUP, ENDPOINT_CONTROLEP,\r
+ USB_ControlPipeSize, PIPE_BANK_SINGLE);\r
+\r
+ if (!(Pipe_IsConfigured()))\r
+ {\r
+ ErrorCode = HOST_ENUMERROR_PipeConfigError;\r
+ SubErrorCode = 0;\r
+ break;\r
+ }\r
+\r
+ USB_ControlRequest = (USB_Request_Header_t)\r
+ {\r
+ .bmRequestType = (REQDIR_HOSTTODEVICE | REQTYPE_STANDARD | REQREC_DEVICE),\r
+ .bRequest = REQ_SetAddress,\r
+ .wValue = USB_HOST_DEVICEADDRESS,\r
+ .wIndex = 0,\r
+ .wLength = 0,\r
+ };\r
+\r
+ if ((SubErrorCode = USB_Host_SendControlRequest(NULL)) != HOST_SENDCONTROL_Successful)\r
+ {\r
+ ErrorCode = HOST_ENUMERROR_ControlError;\r
+ break;\r
+ }\r
+\r
+ HOST_TASK_NONBLOCK_WAIT(100, HOST_STATE_Default_PostAddressSet);\r
+ break;\r
+ case HOST_STATE_Default_PostAddressSet:\r
+ USB_Host_SetDeviceAddress(USB_HOST_DEVICEADDRESS);\r
+\r
+ EVENT_USB_Host_DeviceEnumerationComplete();\r
+ USB_HostState = HOST_STATE_Addressed;\r
+ break;\r
+ }\r
+\r
+ if ((ErrorCode != HOST_ENUMERROR_NoError) && (USB_HostState != HOST_STATE_Unattached))\r
+ {\r
+ EVENT_USB_Host_DeviceEnumerationFailed(ErrorCode, SubErrorCode);\r
+\r
+ USB_Host_VBUS_Auto_Off();\r
+\r
+ EVENT_USB_Host_DeviceUnattached();\r
+\r
+ USB_ResetInterface();\r
+ }\r
+}\r
+\r
+uint8_t USB_Host_WaitMS(uint8_t MS)\r
+{\r
+ bool BusSuspended = USB_Host_IsBusSuspended();\r
+ uint8_t ErrorCode = HOST_WAITERROR_Successful;\r
+ bool HSOFIEnabled = USB_INT_IsEnabled(USB_INT_HSOFI);\r
+\r
+ USB_INT_Disable(USB_INT_HSOFI);\r
+ USB_INT_Clear(USB_INT_HSOFI);\r
+\r
+ USB_Host_ResumeBus();\r
+\r
+ while (MS)\r
+ {\r
+ if (USB_INT_HasOccurred(USB_INT_HSOFI))\r
+ {\r
+ USB_INT_Clear(USB_INT_HSOFI);\r
+ MS--;\r
+ }\r
+\r
+ if ((USB_HostState == HOST_STATE_Unattached) || (USB_CurrentMode != USB_MODE_Host))\r
+ {\r
+ ErrorCode = HOST_WAITERROR_DeviceDisconnect;\r
+\r
+ break;\r
+ }\r
+\r
+ if (Pipe_IsError() == true)\r
+ {\r
+ Pipe_ClearError();\r
+ ErrorCode = HOST_WAITERROR_PipeError;\r
+\r
+ break;\r
+ }\r
+\r
+ if (Pipe_IsStalled() == true)\r
+ {\r
+ Pipe_ClearStall();\r
+ ErrorCode = HOST_WAITERROR_SetupStalled;\r
+\r
+ break;\r
+ }\r
+ }\r
+\r
+ if (BusSuspended)\r
+ USB_Host_SuspendBus();\r
+\r
+ if (HSOFIEnabled)\r
+ USB_INT_Enable(USB_INT_HSOFI);\r
+\r
+ return ErrorCode;\r
+}\r
+\r
+static void USB_Host_ResetDevice(void)\r
+{\r
+ bool BusSuspended = USB_Host_IsBusSuspended();\r
+\r
+ USB_INT_Disable(USB_INT_DDISCI);\r
+\r
+ USB_Host_ResetBus();\r
+ while (!(USB_Host_IsBusResetComplete()));\r
+ USB_Host_ResumeBus();\r
+\r
+ bool HSOFIEnabled = USB_INT_IsEnabled(USB_INT_HSOFI);\r
+\r
+ USB_INT_Disable(USB_INT_HSOFI);\r
+ USB_INT_Clear(USB_INT_HSOFI);\r
+\r
+ for (uint8_t MSRem = 10; MSRem != 0; MSRem--)\r
+ {\r
+ /* Workaround for powerless-pull-up devices. After a USB bus reset,\r
+ all disconnection interrupts are suppressed while a USB frame is\r
+ looked for - if it is found within 10ms, the device is still\r
+ present. */\r
+\r
+ if (USB_INT_HasOccurred(USB_INT_HSOFI))\r
+ {\r
+ USB_INT_Clear(USB_INT_HSOFI);\r
+ USB_INT_Clear(USB_INT_DDISCI);\r
+ break;\r
+ }\r
+\r
+ _delay_ms(1);\r
+ }\r
+\r
+ if (HSOFIEnabled)\r
+ USB_INT_Enable(USB_INT_HSOFI);\r
+\r
+ if (BusSuspended)\r
+ USB_Host_SuspendBus();\r
+\r
+ USB_INT_Enable(USB_INT_DDISCI);\r
+}\r
+\r
+uint8_t USB_Host_SetDeviceConfiguration(const uint8_t ConfigNumber)\r
+{\r
+ USB_ControlRequest = (USB_Request_Header_t)\r
+ {\r
+ .bmRequestType = (REQDIR_HOSTTODEVICE | REQTYPE_STANDARD | REQREC_DEVICE),\r
+ .bRequest = REQ_SetConfiguration,\r
+ .wValue = ConfigNumber,\r
+ .wIndex = 0,\r
+ .wLength = 0,\r
+ };\r
+\r
+ Pipe_SelectPipe(PIPE_CONTROLPIPE);\r
+\r
+ return USB_Host_SendControlRequest(NULL);\r
+}\r
+\r
+uint8_t USB_Host_GetDeviceDescriptor(void* const DeviceDescriptorPtr)\r
+{\r
+ USB_ControlRequest = (USB_Request_Header_t)\r
+ {\r
+ .bmRequestType = (REQDIR_DEVICETOHOST | REQTYPE_STANDARD | REQREC_DEVICE),\r
+ .bRequest = REQ_GetDescriptor,\r
+ .wValue = (DTYPE_Device << 8),\r
+ .wIndex = 0,\r
+ .wLength = sizeof(USB_Descriptor_Device_t),\r
+ };\r
+\r
+ Pipe_SelectPipe(PIPE_CONTROLPIPE);\r
+\r
+ return USB_Host_SendControlRequest(DeviceDescriptorPtr);\r
+}\r
+\r
+uint8_t USB_Host_GetDeviceStringDescriptor(const uint8_t Index,\r
+ void* const Buffer,\r
+ const uint8_t BufferLength)\r
+{\r
+ USB_ControlRequest = (USB_Request_Header_t)\r
+ {\r
+ .bmRequestType = (REQDIR_DEVICETOHOST | REQTYPE_STANDARD | REQREC_DEVICE),\r
+ .bRequest = REQ_GetDescriptor,\r
+ .wValue = (DTYPE_String << 8) | Index,\r
+ .wIndex = 0,\r
+ .wLength = BufferLength,\r
+ };\r
+\r
+ Pipe_SelectPipe(PIPE_CONTROLPIPE);\r
+\r
+ return USB_Host_SendControlRequest(Buffer);\r
+}\r
+\r
+uint8_t USB_Host_ClearPipeStall(const uint8_t EndpointNum)\r
+{\r
+ USB_ControlRequest = (USB_Request_Header_t)\r
+ {\r
+ .bmRequestType = (REQDIR_HOSTTODEVICE | REQTYPE_STANDARD | REQREC_ENDPOINT),\r
+ .bRequest = REQ_ClearFeature,\r
+ .wValue = FEATURE_SEL_EndpointHalt,\r
+ .wIndex = EndpointNum,\r
+ .wLength = 0,\r
+ };\r
+\r
+ Pipe_SelectPipe(PIPE_CONTROLPIPE);\r
+\r
+ return USB_Host_SendControlRequest(NULL);\r
+}\r
+\r
+#endif\r
+\r
projects / pub / lufa.git / blobdiff