293 lines
13 KiB
C
293 lines
13 KiB
C
/*
|
|
LUFA Library
|
|
Copyright (C) Dean Camera, 2017.
|
|
|
|
dean [at] fourwalledcubicle [dot] com
|
|
www.lufa-lib.org
|
|
*/
|
|
|
|
/*
|
|
Copyright 2017 Dean Camera (dean [at] fourwalledcubicle [dot] com)
|
|
|
|
Permission to use, copy, modify, distribute, and sell this
|
|
software and its documentation for any purpose is hereby granted
|
|
without fee, 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 disclaims 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
|
|
* \brief USB host standard request management.
|
|
*
|
|
* This file contains the function prototypes necessary for the issuing of outgoing standard control requests
|
|
* when the library is in USB host mode.
|
|
*
|
|
* \note This file should not be included directly. It is automatically included as needed by the USB driver
|
|
* dispatch header located in LUFA/Drivers/USB/USB.h.
|
|
*/
|
|
|
|
#ifndef __HOSTSTDREQ_H__
|
|
#define __HOSTSTDREQ_H__
|
|
|
|
/* Includes: */
|
|
#include "../../../Common/Common.h"
|
|
#include "USBMode.h"
|
|
#include "StdRequestType.h"
|
|
#include "USBController.h"
|
|
|
|
/* Enable C linkage for C++ Compilers: */
|
|
#if defined(__cplusplus)
|
|
extern "C" {
|
|
#endif
|
|
|
|
/* Preprocessor Checks: */
|
|
#if !defined(__INCLUDE_FROM_USB_DRIVER)
|
|
#error Do not include this file directly. Include LUFA/Drivers/USB/USB.h instead.
|
|
#endif
|
|
|
|
/* Public Interface - May be used in end-application: */
|
|
/* Macros: */
|
|
#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
|
|
|
|
/* Enums: */
|
|
/** Enum for the \ref USB_Host_SendControlRequest() return code, indicating the reason for the error
|
|
* if the transfer of the request is unsuccessful.
|
|
*
|
|
* \ingroup Group_PipeControlReq
|
|
*/
|
|
enum USB_Host_SendControlErrorCodes_t
|
|
{
|
|
HOST_SENDCONTROL_Successful = 0, /**< No error occurred in the request transfer. */
|
|
HOST_SENDCONTROL_DeviceDisconnected = 1, /**< The attached device was disconnected during the
|
|
* request transfer.
|
|
*/
|
|
HOST_SENDCONTROL_PipeError = 2, /**< An error occurred in the pipe while sending the request. */
|
|
HOST_SENDCONTROL_SetupStalled = 3, /**< The attached device stalled the request, usually
|
|
* indicating that the request is unsupported on the device.
|
|
*/
|
|
HOST_SENDCONTROL_SoftwareTimeOut = 4, /**< The request or data transfer timed out. */
|
|
};
|
|
|
|
/* Global Variables: */
|
|
/** Indicates the currently set configuration number of the attached device. This indicates the currently
|
|
* selected configuration value if one has been set successfully, or 0 if no configuration has been selected.
|
|
*
|
|
* To set a device configuration, call the \ref USB_Host_SetDeviceConfiguration() function.
|
|
*
|
|
* \attention This variable should be treated as read-only in the user application, and never manually
|
|
* changed in value.
|
|
*
|
|
* \ingroup Group_Host
|
|
*/
|
|
extern uint8_t USB_Host_ConfigurationNumber;
|
|
|
|
/* Function Prototypes: */
|
|
/** Sends the request stored in the \ref USB_ControlRequest global structure to the attached device,
|
|
* and transfers the data stored in the buffer to the device, or from the device to the buffer
|
|
* as requested. The transfer is made on the currently selected pipe.
|
|
*
|
|
* \ingroup Group_PipeControlReq
|
|
*
|
|
* \param[in] BufferPtr Pointer to the start of the data buffer if the request has a data stage, or
|
|
* \c NULL if the request transfers no data to or from the device.
|
|
*
|
|
* \return A value from the \ref USB_Host_SendControlErrorCodes_t enum to indicate the result.
|
|
*/
|
|
uint8_t USB_Host_SendControlRequest(void* const BufferPtr);
|
|
|
|
/** Sends a SET CONFIGURATION standard request to the attached device, with the given configuration index.
|
|
*
|
|
* This routine will automatically update the \ref USB_HostState and \ref USB_Host_ConfigurationNumber
|
|
* state variables according to the given function parameters and the result of the request.
|
|
*
|
|
* \note After this routine returns, the control pipe will be selected.
|
|
*
|
|
* \ingroup Group_PipeControlReq
|
|
*
|
|
* \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);
|
|
|
|
/** Sends a GET CONFIGURATION standard request to the attached device, to retrieve the currently selected
|
|
* device configuration index.
|
|
*
|
|
* \note After this routine returns, the control pipe will be selected.
|
|
*
|
|
* \ingroup Group_PipeControlReq
|
|
*
|
|
* \param[out] ConfigNumber Pointer to a location where the retrieved configuration index should be stored.
|
|
*
|
|
* \return A value from the \ref USB_Host_SendControlErrorCodes_t enum to indicate the result.
|
|
*/
|
|
uint8_t USB_Host_GetDeviceConfiguration(uint8_t* const ConfigNumber) ATTR_NON_NULL_PTR_ARG(1);
|
|
|
|
/** Sends a GET DESCRIPTOR standard request to the attached device, requesting the descriptor of the
|
|
* specified type and index.
|
|
*
|
|
* \note After this routine returns, the control pipe will be selected.
|
|
*
|
|
* \ingroup Group_PipeControlReq
|
|
*
|
|
* \param[in] Type Type of descriptor to retrieve, a value from the \ref USB_DescriptorTypes_t enum.
|
|
* \param[in] Index Index of the descriptor to retrieve.
|
|
* \param[out] Buffer Pointer to the destination buffer where the retrieved string descriptor is to be stored.
|
|
* \param[in] BufferLength Maximum size of the string descriptor which can be stored into the buffer.
|
|
*
|
|
* \return A value from the \ref USB_Host_SendControlErrorCodes_t enum to indicate the result.
|
|
*/
|
|
uint8_t USB_Host_GetDescriptor(const uint8_t Type,
|
|
const uint8_t Index,
|
|
void* const Buffer,
|
|
const uint8_t BufferLength) ATTR_NON_NULL_PTR_ARG(3);
|
|
|
|
/** Retrieves the current feature status of the attached device, via a GET STATUS standard request. The
|
|
* retrieved feature status can then be examined by masking the retrieved value with the various
|
|
* \c FEATURE_* masks for bus/self power information and remote wakeup support.
|
|
*
|
|
* \note After this routine returns, the control pipe will be selected.
|
|
*
|
|
* \ingroup Group_PipeControlReq
|
|
*
|
|
* \param[out] FeatureStatus Location where the retrieved feature status should be stored.
|
|
*
|
|
* \return A value from the \ref USB_Host_SendControlErrorCodes_t enum to indicate the result.
|
|
*/
|
|
uint8_t USB_Host_GetDeviceStatus(uint8_t* const FeatureStatus) ATTR_NON_NULL_PTR_ARG(1);
|
|
|
|
/** Clears a stall condition on the given pipe, via a CLEAR FEATURE standard request to the attached device.
|
|
*
|
|
* \note After this routine returns, the control pipe will be selected.
|
|
*
|
|
* \ingroup Group_PipeControlReq
|
|
*
|
|
* \param[in] EndpointAddress Address of the endpoint to clear, including the endpoint's direction.
|
|
*
|
|
* \return A value from the \ref USB_Host_SendControlErrorCodes_t enum to indicate the result.
|
|
*/
|
|
uint8_t USB_Host_ClearEndpointStall(const uint8_t EndpointAddress);
|
|
|
|
/** Selects a given alternative setting for the specified interface, via a SET INTERFACE standard request to
|
|
* the attached device.
|
|
*
|
|
* \note After this routine returns, the control pipe will be selected.
|
|
*
|
|
* \ingroup Group_PipeControlReq
|
|
*
|
|
* \param[in] InterfaceIndex Index of the interface whose alternative setting is to be altered.
|
|
* \param[in] AltSetting Index of the interface's alternative setting which is to be selected.
|
|
*
|
|
* \return A value from the \ref USB_Host_SendControlErrorCodes_t enum to indicate the result.
|
|
*/
|
|
uint8_t USB_Host_SetInterfaceAltSetting(const uint8_t InterfaceIndex,
|
|
const uint8_t AltSetting);
|
|
|
|
|
|
/** Retrieves the current alternative setting for the specified interface, via a GET INTERFACE standard request to
|
|
* the attached device.
|
|
*
|
|
* \note After this routine returns, the control pipe will be selected.
|
|
*
|
|
* \ingroup Group_PipeControlReq
|
|
*
|
|
* \param[in] InterfaceIndex Index of the interface whose alternative setting is to be altered.
|
|
* \param[out] AltSetting Pointer to a location where the retrieved alternative setting value should be stored.
|
|
*
|
|
* \return A value from the \ref USB_Host_SendControlErrorCodes_t enum to indicate the result.
|
|
*/
|
|
uint8_t USB_Host_GetInterfaceAltSetting(const uint8_t InterfaceIndex,
|
|
uint8_t* const AltSetting) ATTR_NON_NULL_PTR_ARG(2);
|
|
|
|
/* Inline Functions: */
|
|
/** Sends a GET DESCRIPTOR 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. This is a convenience wrapper for \ref USB_Host_GetDescriptor().
|
|
*
|
|
* \note After this routine returns, the control pipe will be selected.
|
|
*
|
|
* \ingroup Group_PipeControlReq
|
|
*
|
|
* \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.
|
|
*/
|
|
static inline uint8_t USB_Host_GetDeviceDescriptor(USB_Descriptor_Device_t* const DeviceDescriptorPtr) ATTR_NON_NULL_PTR_ARG(1);
|
|
static inline uint8_t USB_Host_GetDeviceDescriptor(USB_Descriptor_Device_t* const DeviceDescriptorPtr)
|
|
{
|
|
return USB_Host_GetDescriptor(DTYPE_Device, 0, DeviceDescriptorPtr, sizeof(USB_Descriptor_Device_t));
|
|
}
|
|
|
|
/** Sends a GET DESCRIPTOR standard request to the attached device, requesting the string descriptor
|
|
* of the specified index. This can be used to easily retrieve string descriptors from the device by
|
|
* index, after the index is obtained from the Device or Configuration descriptors. This is a convenience
|
|
* wrapper for \ref USB_Host_GetDescriptor().
|
|
*
|
|
* \note After this routine returns, the control pipe will be selected.
|
|
*
|
|
* \ingroup Group_PipeControlReq
|
|
*
|
|
* \param[in] Index Index of the string descriptor to retrieve.
|
|
* \param[out] Buffer Pointer to the destination buffer where the retrieved string descriptor is
|
|
* to be stored.
|
|
* \param[in] BufferLength Maximum size of the string descriptor which can be stored into the buffer.
|
|
*
|
|
* \return A value from the \ref USB_Host_SendControlErrorCodes_t enum to indicate the result.
|
|
*/
|
|
static inline uint8_t USB_Host_GetDeviceStringDescriptor(const uint8_t Index,
|
|
void* const Buffer,
|
|
const uint8_t BufferLength) ATTR_NON_NULL_PTR_ARG(2);
|
|
static inline uint8_t USB_Host_GetDeviceStringDescriptor(const uint8_t Index,
|
|
void* const Buffer,
|
|
const uint8_t BufferLength)
|
|
{
|
|
return USB_Host_GetDescriptor(DTYPE_String, Index, Buffer, BufferLength);
|
|
}
|
|
|
|
/* Private Interface - For use in library only: */
|
|
#if !defined(__DOXYGEN__)
|
|
/* Enums: */
|
|
enum USB_WaitForTypes_t
|
|
{
|
|
USB_HOST_WAITFOR_SetupSent,
|
|
USB_HOST_WAITFOR_InReceived,
|
|
USB_HOST_WAITFOR_OutReady,
|
|
};
|
|
|
|
/* Function Prototypes: */
|
|
#if defined(__INCLUDE_FROM_HOSTSTDREQ_C)
|
|
static uint8_t USB_Host_SendControlRequest_PRV(void* const BufferPtr);
|
|
static uint8_t USB_Host_WaitForIOS(const uint8_t WaitType);
|
|
#endif
|
|
#endif
|
|
|
|
/* Disable C linkage for C++ Compilers: */
|
|
#if defined(__cplusplus)
|
|
}
|
|
#endif
|
|
|
|
#endif
|
|
|