mirror of
https://github.com/qmk/qmk_firmware.git
synced 2025-06-10 02:44:18 +00:00
18cbd31605
Added new USB_Host_EnableSOFEvents(), USB_Host_DisableSOFEvents() and EVENT_USB_Host_StartOfFrame() for the user application handling of USB Start of Frame events while in USB Host mode. Changed over all demos, drivers and internal functions to use the current frame number over the Start of Frame flag where possible to free up the Start of Frame flag for interrupt use in the user application.
354 lines
8.9 KiB
C
354 lines
8.9 KiB
C
/*
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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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uint16_t PreviousFrameNumber = USB_Host_GetFrameNumber();
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USB_Host_ResumeBus();
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while (MS)
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{
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uint16_t CurrentFrameNumber = USB_Host_GetFrameNumber();
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if (CurrentFrameNumber != PreviousFrameNumber)
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{
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PreviousFrameNumber = CurrentFrameNumber;
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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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bool HSOFIEnabled = USB_INT_IsEnabled(USB_INT_HSOFI);
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USB_INT_Disable(USB_INT_HSOFI);
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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 (HSOFIEnabled)
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USB_INT_Enable(USB_INT_HSOFI);
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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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