You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
397 lines
22 KiB
397 lines
22 KiB
/*
|
|
LUFA Library
|
|
Copyright (C) Dean Camera, 2009.
|
|
|
|
dean [at] fourwalledcubicle [dot] com
|
|
www.fourwalledcubicle.com
|
|
*/
|
|
|
|
/*
|
|
Copyright 2009 Dean Camera (dean [at] fourwalledcubicle [dot] com)
|
|
|
|
Permission to use, copy, modify, and distribute this software
|
|
and its documentation for any purpose and without fee is hereby
|
|
granted, provided that the above copyright notice appear in all
|
|
copies and that both that the copyright notice and this
|
|
permission notice and warranty disclaimer appear in supporting
|
|
documentation, and that the name of the author not be used in
|
|
advertising or publicity pertaining to distribution of the
|
|
software without specific, written prior permission.
|
|
|
|
The author disclaim all warranties with regard to this
|
|
software, including all implied warranties of merchantability
|
|
and fitness. In no event shall the author be liable for any
|
|
special, indirect or consequential damages or any damages
|
|
whatsoever resulting from loss of use, data or profits, whether
|
|
in an action of contract, negligence or other tortious action,
|
|
arising out of or in connection with the use or performance of
|
|
this software.
|
|
*/
|
|
|
|
/** \ingroup Group_USB
|
|
* @defgroup Group_Host Host Management
|
|
*
|
|
* USB Host mode related macros and enums. This module contains macros and enums which are used when
|
|
* the USB controller is initialized in host mode.
|
|
*
|
|
* @{
|
|
*/
|
|
|
|
#ifndef __USBHOST_H__
|
|
#define __USBHOST_H__
|
|
|
|
/* Includes: */
|
|
#include <avr/io.h>
|
|
#include <stdbool.h>
|
|
#include <util/delay.h>
|
|
|
|
#include "../../../Common/Common.h"
|
|
#include "../HighLevel/USBInterrupt.h"
|
|
#include "../HighLevel/StdDescriptors.h"
|
|
#include "Pipe.h"
|
|
|
|
/* Enable C linkage for C++ Compilers: */
|
|
#if defined(__cplusplus)
|
|
extern "C" {
|
|
#endif
|
|
|
|
/* Public Interface - May be used in end-application: */
|
|
/* Macros: */
|
|
/** Indicates the fixed USB device address which any attached device is enumerated to when in
|
|
* host mode. As only one USB device may be attached to the AVR in host mode at any one time
|
|
* and that the address used is not important (other than the fact that it is non-zero), a
|
|
* fixed value is specified by the library.
|
|
*/
|
|
#define USB_HOST_DEVICEADDRESS 1
|
|
|
|
#if !defined(USB_HOST_TIMEOUT_MS) || defined(__DOXYGEN__)
|
|
/** Constant for the maximum software timeout period of sent USB control transactions to an attached
|
|
* device. If a device fails to respond to a sent control request within this period, the
|
|
* library will return a timeout error code.
|
|
*
|
|
* This value may be overridden in the user project makefile as the value of the
|
|
* \ref USB_HOST_TIMEOUT_MS token, and passed to the compiler using the -D switch.
|
|
*/
|
|
#define USB_HOST_TIMEOUT_MS 1000
|
|
#endif
|
|
|
|
#if !defined(HOST_DEVICE_SETTLE_DELAY_MS) || defined(__DOXYGEN__)
|
|
/** Constant for the delay in milliseconds after a device is connected before the library
|
|
* will start the enumeration process. Some devices require a delay of up to 5 seconds
|
|
* after connection before the enumeration process can start or incorrect operation will
|
|
* occur.
|
|
*
|
|
* This value may be overridden in the user project makefile as the value of the
|
|
* HOST_DEVICE_SETTLE_DELAY_MS token, and passed to the compiler using the -D switch.
|
|
*/
|
|
#define HOST_DEVICE_SETTLE_DELAY_MS 1500
|
|
#endif
|
|
|
|
/* Pseudo-Function Macros: */
|
|
#if defined(__DOXYGEN__)
|
|
/** Resets the USB bus, including the endpoints in any attached device and pipes on the AVR host.
|
|
* USB bus resets leave the default control pipe configured (if already configured).
|
|
*
|
|
* If the USB bus has been suspended prior to issuing a bus reset, the attached device will be
|
|
* woken up automatically and the bus resumed after the reset has been correctly issued.
|
|
*/
|
|
static inline void USB_Host_ResetBus(void);
|
|
|
|
/** Determines if a previously issued bus reset (via the \ref USB_Host_ResetBus() macro) has
|
|
* completed.
|
|
*
|
|
* \return Boolean true if no bus reset is currently being sent, false otherwise.
|
|
*/
|
|
static inline void USB_Host_IsBusResetComplete(void);
|
|
|
|
/** Resumes USB communications with an attached and enumerated device, by resuming the transmission
|
|
* of the 1MS Start Of Frame messages to the device. When resumed, USB communications between the
|
|
* host and attached device may occur.
|
|
*/
|
|
static inline void USB_Host_ResumeBus(void);
|
|
|
|
/** Suspends the USB bus, preventing any communications from occurring between the host and attached
|
|
* device until the bus has been resumed. This stops the transmission of the 1MS Start Of Frame
|
|
* messages to the device.
|
|
*/
|
|
static inline void USB_Host_SuspendBus(void);
|
|
|
|
/** Determines if the USB bus has been suspended via the use of the \ref USB_Host_SuspendBus() macro,
|
|
* false otherwise. While suspended, no USB communications can occur until the bus is resumed,
|
|
* except for the Remote Wakeup event from the device if supported.
|
|
*
|
|
* \return Boolean true if the bus is currently suspended, false otherwise
|
|
*/
|
|
static inline bool USB_Host_IsBusSuspended(void);
|
|
|
|
/** Determines if the attached device is currently enumerated in Full Speed mode (12Mb/s), or
|
|
* false if the attached device is enumerated in Low Speed mode (1.5Mb/s).
|
|
*
|
|
* \return Boolean true if the attached device is enumerated in Full Speed mode, false otherwise
|
|
*/
|
|
static inline bool USB_Host_IsDeviceFullSpeed(void);
|
|
|
|
/** Determines if the attached device is currently issuing a Remote Wakeup request, requesting
|
|
* that the host resume the USB bus and wake up the device, false otherwise.
|
|
*
|
|
* \return Boolean true if the attached device has sent a Remote Wakeup request, false otherwise
|
|
*/
|
|
static inline bool USB_Host_IsRemoteWakeupSent(void);
|
|
|
|
/** Clears the flag indicating that a Remote Wakeup request has been issued by an attached device. */
|
|
static inline void USB_Host_ClearRemoteWakeupSent(void);
|
|
|
|
/** Accepts a Remote Wakeup request from an attached device. This must be issued in response to
|
|
* a device's Remote Wakeup request within 2ms for the request to be accepted and the bus to
|
|
* be resumed.
|
|
*/
|
|
static inline void USB_Host_ResumeFromWakeupRequest(void);
|
|
|
|
/** Determines if a resume from Remote Wakeup request is currently being sent to an attached
|
|
* device.
|
|
*
|
|
* \return Boolean true if no resume request is currently being sent, false otherwise
|
|
*/
|
|
static inline bool USB_Host_IsResumeFromWakeupRequestSent(void);
|
|
#else
|
|
#define USB_Host_ResetBus() MACROS{ UHCON |= (1 << RESET); }MACROE
|
|
|
|
#define USB_Host_IsBusResetComplete() ((UHCON & (1 << RESET)) ? false : true)
|
|
|
|
#define USB_Host_ResumeBus() MACROS{ UHCON |= (1 << SOFEN); }MACROE
|
|
|
|
#define USB_Host_SuspendBus() MACROS{ UHCON &= ~(1 << SOFEN); }MACROE
|
|
|
|
#define USB_Host_IsBusSuspended() ((UHCON & (1 << SOFEN)) ? false : true)
|
|
|
|
#define USB_Host_IsDeviceFullSpeed() ((USBSTA & (1 << SPEED)) ? true : false)
|
|
|
|
#define USB_Host_IsRemoteWakeupSent() ((UHINT & (1 << RXRSMI)) ? true : false)
|
|
|
|
#define USB_Host_ClearRemoteWakeupSent() MACROS{ UHINT &= ~(1 << RXRSMI); }MACROE
|
|
|
|
#define USB_Host_ResumeFromWakeupRequest() MACROS{ UHCON |= (1 << RESUME); }MACROE
|
|
|
|
#define USB_Host_IsResumeFromWakeupRequestSent() ((UHCON & (1 << RESUME)) ? false : true)
|
|
#endif
|
|
|
|
/* Function Prototypes: */
|
|
/** Convenience function. This routine sends a SetConfiguration standard request to the attached
|
|
* device, with the given configuration index. This can be used to easily set the device
|
|
* configuration without creating and sending the request manually.
|
|
*
|
|
* \note After this routine returns, the control pipe will be selected.
|
|
*
|
|
* \param[in] ConfigNumber Configuration index to send to the device
|
|
*
|
|
* \return A value from the \ref USB_Host_SendControlErrorCodes_t enum to indicate the result.
|
|
*/
|
|
uint8_t USB_Host_SetDeviceConfiguration(const uint8_t ConfigNumber);
|
|
|
|
/** Convenience function. This routine sends a GetDescriptor standard request to the attached
|
|
* device, requesting the device descriptor. This can be used to easily retrieve information
|
|
* about the device such as its VID, PID and power requirements.
|
|
*
|
|
* \note After this routine returns, the control pipe will be selected.
|
|
*
|
|
* \param[out] DeviceDescriptorPtr Pointer to the destination device descriptor structure where
|
|
* the read data is to be stored
|
|
*
|
|
* \return A value from the \ref USB_Host_SendControlErrorCodes_t enum to indicate the result.
|
|
*/
|
|
uint8_t USB_Host_GetDeviceDescriptor(void* const DeviceDescriptorPtr);
|
|
|
|
/** Clears a stall condition on the given pipe, via a ClearFeature request to the attached device.
|
|
*
|
|
* \note After this routine returns, the control pipe will be selected.
|
|
*
|
|
* \param[in] EndpointIndex Index of the endpoint to clear
|
|
*
|
|
* \return A value from the \ref USB_Host_SendControlErrorCodes_t enum to indicate the result.
|
|
*/
|
|
uint8_t USB_Host_ClearPipeStall(uint8_t EndpointIndex);
|
|
|
|
/* Enums: */
|
|
/** Enum for the various states of the USB Host state machine. Only some states are
|
|
* implemented in the LUFA library - other states are left to the user to implement.
|
|
*
|
|
* For information on each state, refer to the USB 2.0 specification. Some states have
|
|
*
|
|
* \see \ref USB_HostState, which stores the current host state machine state.
|
|
*/
|
|
enum USB_Host_States_t
|
|
{
|
|
HOST_STATE_WaitForDeviceRemoval = 0, /**< Internally implemented by the library. This state can be
|
|
* used by the library to wait until the attached device is
|
|
* removed by the user - useful for when an error occurs or
|
|
* further communication with the device is not needed. This
|
|
* allows for other code to run while the state machine is
|
|
* effectively disabled.
|
|
*/
|
|
HOST_STATE_WaitForDevice = 1, /**< Internally implemented by the library. This state indicates
|
|
* that the stack is waiting for an interval to elapse before
|
|
* continuing with the next step of the device enumeration
|
|
* process.
|
|
*
|
|
* \note Do not manually change to this state in the user code.
|
|
*/
|
|
HOST_STATE_Unattached = 2, /**< Internally implemented by the library. This state indicates
|
|
* that the host state machine is waiting for a device to be
|
|
* attached so that it can start the enumeration process.
|
|
*
|
|
* \note Do not manually change to this state in the user code.
|
|
*/
|
|
HOST_STATE_Powered = 3, /**< Internally implemented by the library. This state indicates
|
|
* that a device has been attached, and the library's internals
|
|
* are being configured to begin the enumeration process.
|
|
*
|
|
* \note Do not manually change to this state in the user code.
|
|
*/
|
|
HOST_STATE_Powered_WaitForDeviceSettle = 4, /**< Internally implemented by the library. This state indicates
|
|
* that the stack is waiting for the initial settling period to
|
|
* elapse before beginning the enumeration process.
|
|
*
|
|
* \note Do not manually change to this state in the user code.
|
|
*/
|
|
HOST_STATE_Powered_WaitForConnect = 5, /**< Internally implemented by the library. This state indicates
|
|
* that the stack is waiting for a connection event from the USB
|
|
* controller to indicate a valid USB device has been attached to
|
|
* the bus and is ready to be enumerated.
|
|
*
|
|
* \note Do not manually change to this state in the user code.
|
|
*/
|
|
HOST_STATE_Powered_DoReset = 6, /**< Internally implemented by the library. This state indicates
|
|
* that a valid USB device has been attached, and that it is
|
|
* will now be reset to ensure it is ready for enumeration.
|
|
*
|
|
* \note Do not manually change to this state in the user code.
|
|
*/
|
|
HOST_STATE_Powered_ConfigPipe = 7, /**< Internally implemented by the library. This state indicates
|
|
* that the attached device is currently powered and reset, and
|
|
* that the control pipe is now being configured by the stack.
|
|
*
|
|
* \note Do not manually change to this state in the user code.
|
|
*/
|
|
HOST_STATE_Default = 8, /**< Internally implemented by the library. This state indicates
|
|
* that the stack is currently retrieving the control endpoint's
|
|
* size from the device, so that the control pipe can be altered
|
|
* to match.
|
|
*
|
|
* \note Do not manually change to this state in the user code.
|
|
*/
|
|
HOST_STATE_Default_PostReset = 9, /**< Internally implemented by the library. This state indicates that
|
|
* the control pipe is being reconfigured to match the retrieved
|
|
* control endpoint size from the device, and the device's USB bus
|
|
* address is being set.
|
|
*
|
|
* \note Do not manually change to this state in the user code.
|
|
*/
|
|
HOST_STATE_Default_PostAddressSet = 10, /**< Internally implemented by the library. This state indicates that
|
|
* the device's address has now been set, and the stack is has now
|
|
* completed the device enumeration process. This state causes the
|
|
* stack to change the current USB device address to that set for
|
|
* the connected device, before progressing to the user-implemented
|
|
* HOST_STATE_Addressed state for further communications.
|
|
*
|
|
* \note Do not manually change to this state in the user code.
|
|
*/
|
|
HOST_STATE_Addressed = 11, /**< May be implemented by the user project. This state should
|
|
* set the device configuration before progressing to the
|
|
* HOST_STATE_Configured state. Other processing (such as the
|
|
* retrieval and processing of the device descriptor) should also
|
|
* be placed in this state.
|
|
*/
|
|
HOST_STATE_Configured = 12, /**< May be implemented by the user project. This state should implement the
|
|
* actual work performed on the attached device and changed to the
|
|
* HOST_STATE_Suspended or HOST_STATE_WaitForDeviceRemoval states as needed.
|
|
*/
|
|
HOST_STATE_Suspended = 15, /**< May be implemented by the user project. This state should be maintained
|
|
* while the bus is suspended, and changed to either the HOST_STATE_Configured
|
|
* (after resuming the bus with the USB_Host_ResumeBus() macro) or the
|
|
* HOST_STATE_WaitForDeviceRemoval states as needed.
|
|
*/
|
|
};
|
|
|
|
/** Enum for the error codes for the \ref EVENT_USB_HostError() event.
|
|
*
|
|
* \see \ref Group_Events for more information on this event.
|
|
*/
|
|
enum USB_Host_ErrorCodes_t
|
|
{
|
|
HOST_ERROR_VBusVoltageDip = 0, /**< VBUS voltage dipped to an unacceptable level. This
|
|
* error may be the result of an attached device drawing
|
|
* too much current from the VBUS line, or due to the
|
|
* AVR's power source being unable to supply sufficient
|
|
* current.
|
|
*/
|
|
};
|
|
|
|
/** Enum for the error codes for the \ref EVENT_USB_DeviceEnumerationFailed() event.
|
|
*
|
|
* \see \ref Group_Events for more information on this event.
|
|
*/
|
|
enum USB_Host_EnumerationErrorCodes_t
|
|
{
|
|
HOST_ENUMERROR_NoError = 0, /**< No error occurred. Used internally, this is not a valid
|
|
* ErrorCode parameter value for the \ref EVENT_USB_DeviceEnumerationFailed()
|
|
* event.
|
|
*/
|
|
HOST_ENUMERROR_WaitStage = 1, /**< One of the delays between enumeration steps failed
|
|
* to complete successfully, due to a timeout or other
|
|
* error.
|
|
*/
|
|
HOST_ENUMERROR_NoDeviceDetected = 2, /**< No device was detected, despite the USB data lines
|
|
* indicating the attachment of a device.
|
|
*/
|
|
HOST_ENUMERROR_ControlError = 3, /**< One of the enumeration control requests failed to
|
|
* complete successfully.
|
|
*/
|
|
HOST_ENUMERROR_PipeConfigError = 4, /**< The default control pipe (address 0) failed to
|
|
* configure correctly.
|
|
*/
|
|
};
|
|
|
|
/* Private Interface - For use in library only: */
|
|
#if !defined(__DOXYGEN__)
|
|
/* Macros: */
|
|
#define USB_Host_HostMode_On() MACROS{ USBCON |= (1 << HOST); }MACROE
|
|
#define USB_Host_HostMode_Off() MACROS{ USBCON &= ~(1 << HOST); }MACROE
|
|
|
|
#define USB_Host_VBUS_Auto_Enable() MACROS{ OTGCON &= ~(1 << VBUSHWC); UHWCON |= (1 << UVCONE); }MACROE
|
|
#define USB_Host_VBUS_Manual_Enable() MACROS{ OTGCON |= (1 << VBUSHWC); UHWCON &= ~(1 << UVCONE); DDRE |= (1 << 7); }MACROE
|
|
|
|
#define USB_Host_VBUS_Auto_On() MACROS{ OTGCON |= (1 << VBUSREQ); }MACROE
|
|
#define USB_Host_VBUS_Manual_On() MACROS{ PORTE |= (1 << 7); }MACROE
|
|
|
|
#define USB_Host_VBUS_Auto_Off() MACROS{ OTGCON |= (1 << VBUSRQC); }MACROE
|
|
#define USB_Host_VBUS_Manual_Off() MACROS{ PORTE &= ~(1 << 7); }MACROE
|
|
|
|
#define USB_Host_SetDeviceAddress(addr) MACROS{ UHADDR = (addr & 0x7F); }MACROE
|
|
|
|
/* Enums: */
|
|
enum USB_Host_WaitMSErrorCodes_t
|
|
{
|
|
HOST_WAITERROR_Successful = 0,
|
|
HOST_WAITERROR_DeviceDisconnect = 1,
|
|
HOST_WAITERROR_PipeError = 2,
|
|
HOST_WAITERROR_SetupStalled = 3,
|
|
};
|
|
|
|
/* Function Prototypes: */
|
|
void USB_Host_ProcessNextHostState(void);
|
|
uint8_t USB_Host_WaitMS(uint8_t MS);
|
|
|
|
#if defined(INCLUDE_FROM_HOST_C)
|
|
static void USB_Host_ResetDevice(void);
|
|
#endif
|
|
#endif
|
|
|
|
/* Disable C linkage for C++ Compilers: */
|
|
#if defined(__cplusplus)
|
|
}
|
|
#endif
|
|
|
|
#endif
|
|
|
|
/** @} */
|