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.
246 lines
12 KiB
246 lines
12 KiB
17 years ago
|
/*
|
||
|
|
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.
|
||
|
|
*/
|
||
|
|
|
||
|
|
/** \file
|
||
|
|
*
|
||
|
|
* 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"
|
||
|
|
|
||
|
|
/* 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
|
||
|
|
* 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
|
||
|
|
|
||
|
|
/** 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.
|
||
|
|
*/
|
||
|
|
#define USB_Host_ResetBus() MACROS{ UHCON |= (1 << RESET); }MACROE
|
||
|
|
|
||
|
|
/** Determines if a previously issued bus reset (via the USB_Host_ResetBus() macro) has
|
||
|
|
* completed. This macro returns true if no bus reset is currently being sent, false
|
||
|
|
* otherwise.
|
||
|
|
*/
|
||
|
|
#define USB_Host_IsResetBusDone() ((UHCON & (1 << RESET)) ? false : true)
|
||
|
|
|
||
|
|
/** 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.
|
||
|
|
*/
|
||
|
|
#define USB_Host_ResumeBus() MACROS{ UHCON |= (1 << SOFEN); }MACROE
|
||
|
|
|
||
|
|
/** Suspends the USB bus, preventing any communications from occuring 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.
|
||
|
|
*/
|
||
|
|
#define USB_Host_SuspendBus() MACROS{ UHCON &= ~(1 << SOFEN); }MACROE
|
||
|
|
|
||
|
|
/** Returns true if the USB bus has been suspended via the use of the 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.
|
||
|
|
*/
|
||
|
|
#define USB_Host_IsBusSuspended() ((UHCON & (1 << SOFEN)) ? false : true)
|
||
|
|
|
||
|
|
/** Returns true 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).
|
||
|
|
*/
|
||
|
|
#define USB_Host_IsDeviceFullSpeed() ((USBSTA & (1 << SPEED)) ? true : false)
|
||
|
|
|
||
|
|
/** Returns true 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.
|
||
|
|
*/
|
||
|
|
#define USB_Host_IsRemoteWakeupSent() ((UHINT & (1 << RXRSMI)) ? true : false)
|
||
|
|
|
||
|
|
/** Clears the flag indicating that a Remote Wakeup request has been issued by an attached
|
||
|
|
* device.
|
||
|
|
*/
|
||
|
|
#define USB_Host_ClearRemoteWakeupSent() MACROS{ UHINT &= ~(1 << RXRSMI); }MACROE
|
||
|
|
|
||
|
|
/** 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.
|
||
|
|
*/
|
||
|
|
#define USB_Host_ResumeFromWakeupRequest() MACROS{ UHCON |= (1 << RESUME); }MACROE
|
||
|
|
|
||
|
|
/** Returns true if no resume from Remote Wakeup request is currently being sent to an attached
|
||
|
|
* device, false otherwise.
|
||
|
|
*/
|
||
|
|
#define USB_Host_IsResumeFromWakeupRequestSent() ((UHCON & (1 << RESUME)) ? false : true)
|
||
|
|
|
||
|
|
/* 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 USBTask.h for information on the global variable USB_HostState, which stores the
|
||
|
|
* current host state machine state.
|
||
|
|
*/
|
||
|
|
enum USB_Host_States_t
|
||
|
|
{
|
||
|
|
HOST_STATE_WaitForDevice = 0, /**< Internally implemented by the library. */
|
||
|
|
HOST_STATE_Unattached = 1, /**< Internally implemented by the library. */
|
||
|
|
HOST_STATE_Attached = 2, /**< Internally implemented by the library. */
|
||
|
|
HOST_STATE_Attached_WaitForDeviceSettle = 3, /**< Internally implemented by the library. */
|
||
|
|
HOST_STATE_Attached_WaitForConnect = 4, /**< Internally implemented by the library. */
|
||
|
|
HOST_STATE_Attached_DoReset = 5, /**< Internally implemented by the library. */
|
||
|
|
HOST_STATE_Powered = 6, /**< Internally implemented by the library. */
|
||
|
|
HOST_STATE_Default = 7, /**< Internally implemented by the library. */
|
||
|
|
HOST_STATE_Default_PostReset = 8, /**< Internally implemented by the library. */
|
||
|
|
HOST_STATE_Default_PostAddressSet = 9, /**< Internally implemented by the library. */
|
||
|
|
HOST_STATE_Addressed = 10, /**< May be implemented by the user project. */
|
||
|
|
HOST_STATE_Configured = 11, /**< May be implemented by the user project. */
|
||
|
|
HOST_STATE_Ready = 12, /**< May be implemented by the user project. */
|
||
|
|
HOST_STATE_Suspended = 13, /**< May be implemented by the user project. */
|
||
|
|
};
|
||
|
|
|
||
|
|
/** Enum for the error codes for the USB_HostError event.
|
||
|
|
*
|
||
|
|
* \see Events.h 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 USB_DeviceEnumerationFailed event.
|
||
|
|
*
|
||
|
|
* \see Events.h 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 USB_DeviceEnumerationFailed
|
||
|
|
* event.
|
||
|
|
*/
|
||
|
|
HOST_ENUMERROR_WaitStage = 1, /**< One of the delays between enumeration steps failed
|
||
|
|
* to complete successfuly, 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 successfuly.
|
||
|
|
*/
|
||
|
|
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 & 0b01111111); }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: */
|
||
|
|
uint8_t USB_Host_WaitMS(uint8_t MS);
|
||
|
|
void USB_Host_ResetDevice(void);
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/* Disable C linkage for C++ Compilers: */
|
||
|
|
#if defined(__cplusplus)
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#endif
|