--- /dev/null
+/*
+ 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 Host mode driver for the library USB CDC Class driver.
+ *
+ * Host mode driver for the library USB CDC Class driver.
+ *
+ * \note This file should not be included directly. It is automatically included as needed by the USB module driver
+ * dispatch header located in LUFA/Drivers/USB.h.
+ */
+
+/** \ingroup Group_USBClassCDC
+ * \defgroup Group_USBClassCDCHost CDC Class Host Mode Driver
+ *
+ * \section Sec_USBClassCDCHost_Dependencies Module Source Dependencies
+ * The following files must be built with any user project that uses this module:
+ * - LUFA/Drivers/USB/Class/Host/CDCClassHost.c <i>(Makefile source module name: LUFA_SRC_USBCLASS)</i>
+ *
+ * \section Sec_USBClassCDCHost_ModDescription Module Description
+ * Host Mode USB Class driver framework interface, for the CDC USB Class driver.
+ *
+ * @{
+ */
+
+#ifndef __CDC_CLASS_HOST_H__
+#define __CDC_CLASS_HOST_H__
+
+ /* Includes: */
+ #include "../../USB.h"
+ #include "../Common/CDCClassCommon.h"
+
+ #include <stdio.h>
+
+ /* Enable C linkage for C++ Compilers: */
+ #if defined(__cplusplus)
+ extern "C" {
+ #endif
+
+ /* Preprocessor Checks: */
+ #if !defined(__INCLUDE_FROM_CDC_DRIVER)
+ #error Do not include this file directly. Include LUFA/Drivers/USB.h instead.
+ #endif
+
+ /* Public Interface - May be used in end-application: */
+ /* Type Defines: */
+ /** \brief CDC Class Host Mode Configuration and State Structure.
+ *
+ * Class state structure. An instance of this structure should be made within the user application,
+ * and passed to each of the CDC class driver functions as the \c CDCInterfaceInfo parameter. This
+ * stores each CDC interface's configuration and state information.
+ */
+ typedef struct
+ {
+ struct
+ {
+ USB_Pipe_Table_t DataINPipe; /**< Data IN Pipe configuration table. */
+ USB_Pipe_Table_t DataOUTPipe; /**< Data OUT Pipe configuration table. */
+ USB_Pipe_Table_t NotificationPipe; /**< Notification IN Pipe configuration table. */
+ } Config; /**< Config data for the USB class interface within the device. All elements in this section
+ * <b>must</b> be set or the interface will fail to enumerate and operate correctly.
+ */
+ struct
+ {
+ bool IsActive; /**< Indicates if the current interface instance is connected to an attached device, valid
+ * after \ref CDC_Host_ConfigurePipes() is called and the Host state machine is in the
+ * Configured state.
+ */
+ uint8_t ControlInterfaceNumber; /**< Interface index of the CDC-ACM control interface within the attached device. */
+
+ struct
+ {
+ uint16_t HostToDevice; /**< Control line states from the host to device, as a set of \c CDC_CONTROL_LINE_OUT_*
+ * masks - to notify the device of changes to these values, call the
+ * \ref CDC_Host_SendControlLineStateChange() function.
+ */
+ uint16_t DeviceToHost; /**< Control line states from the device to host, as a set of \c CDC_CONTROL_LINE_IN_*
+ * masks. This value is updated each time \ref CDC_Host_USBTask() is called.
+ */
+ } ControlLineStates; /**< Current states of the virtual serial port's control lines between the device and host. */
+
+ CDC_LineEncoding_t LineEncoding; /**< Line encoding used in the virtual serial port, for the device's information.
+ * This is generally only used if the virtual serial port data is to be
+ * reconstructed on a physical UART. When set by the host application, the
+ * \ref CDC_Host_SetLineEncoding() function must be called to push the changes
+ * to the device.
+ */
+ } State; /**< State data for the USB class interface within the device. All elements in this section
+ * <b>may</b> be set to initial values, but may also be ignored to default to sane values when
+ * the interface is enumerated.
+ */
+ } USB_ClassInfo_CDC_Host_t;
+
+ /* Enums: */
+ /** Enum for the possible error codes returned by the \ref CDC_Host_ConfigurePipes() function. */
+ enum CDC_Host_EnumerationFailure_ErrorCodes_t
+ {
+ CDC_ENUMERROR_NoError = 0, /**< Configuration Descriptor was processed successfully. */
+ CDC_ENUMERROR_InvalidConfigDescriptor = 1, /**< The device returned an invalid Configuration Descriptor. */
+ CDC_ENUMERROR_NoCompatibleInterfaceFound = 2, /**< A compatible CDC interface was not found in the device's Configuration Descriptor. */
+ CDC_ENUMERROR_PipeConfigurationFailed = 3, /**< One or more pipes for the specified interface could not be configured correctly. */
+ };
+
+ /* Function Prototypes: */
+ /** General management task for a given CDC host class interface, required for the correct operation of the interface. This should
+ * be called frequently in the main program loop, before the master USB management task \ref USB_USBTask().
+ *
+ * \param[in,out] CDCInterfaceInfo Pointer to a structure containing an CDC Class host configuration and state.
+ */
+ void CDC_Host_USBTask(USB_ClassInfo_CDC_Host_t* const CDCInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);
+
+ /** Host interface configuration routine, to configure a given CDC host interface instance using the Configuration
+ * Descriptor read from an attached USB device. This function automatically updates the given CDC Host instance's
+ * state values and configures the pipes required to communicate with the interface if it is found within the device.
+ * This should be called once after the stack has enumerated the attached device, while the host state machine is in
+ * the Addressed state.
+ *
+ * \param[in,out] CDCInterfaceInfo Pointer to a structure containing an CDC Class host configuration and state.
+ * \param[in] ConfigDescriptorSize Length of the attached device's Configuration Descriptor.
+ * \param[in] ConfigDescriptorData Pointer to a buffer containing the attached device's Configuration Descriptor.
+ *
+ * \return A value from the \ref CDC_Host_EnumerationFailure_ErrorCodes_t enum.
+ */
+ uint8_t CDC_Host_ConfigurePipes(USB_ClassInfo_CDC_Host_t* const CDCInterfaceInfo,
+ uint16_t ConfigDescriptorSize,
+ void* ConfigDescriptorData) ATTR_NON_NULL_PTR_ARG(1) ATTR_NON_NULL_PTR_ARG(3);
+
+ /** Sets the line encoding for the attached device's virtual serial port. This should be called when the \c LineEncoding
+ * values of the interface have been changed to push the new settings to the USB device.
+ *
+ * \param[in,out] CDCInterfaceInfo Pointer to a structure containing a CDC Class host configuration and state.
+ *
+ * \return A value from the \ref USB_Host_SendControlErrorCodes_t enum.
+ */
+ uint8_t CDC_Host_SetLineEncoding(USB_ClassInfo_CDC_Host_t* const CDCInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);
+
+ /** Sends a Serial Control Line State Change notification to the device. This should be called when the virtual serial
+ * control lines (DTR, RTS, etc.) have changed states. Line states persist until they are cleared via a second
+ * notification. This should be called each time the CDC class driver's \c ControlLineStates.HostToDevice value is updated
+ * to push the new states to the USB device.
+ *
+ * \param[in,out] CDCInterfaceInfo Pointer to a structure containing a CDC Class host configuration and state.
+ *
+ * \return A value from the \ref USB_Host_SendControlErrorCodes_t enum.
+ */
+ uint8_t CDC_Host_SendControlLineStateChange(USB_ClassInfo_CDC_Host_t* const CDCInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);
+
+ /** Sends a Send Break request to the device. This is generally used to separate data or to indicate a special condition
+ * to the receiving device.
+ *
+ * \param[in,out] CDCInterfaceInfo Pointer to a structure containing a CDC Class host configuration and state.
+ * \param[in] Duration Duration of the break, in milliseconds.
+ *
+ * \return A value from the \ref USB_Host_SendControlErrorCodes_t enum.
+ */
+ uint8_t CDC_Host_SendBreak(USB_ClassInfo_CDC_Host_t* const CDCInterfaceInfo,
+ const uint8_t Duration) ATTR_NON_NULL_PTR_ARG(1);
+
+ /** Sends a given data buffer to the attached USB device, if connected. If a device is not connected when the function is
+ * called, the data will be discarded. Bytes will be queued for transmission to the device until either the pipe bank
+ * becomes full, or the \ref CDC_Host_Flush() function is called to flush the pending data to the device. This allows for
+ * multiple bytes to be packed into a single pipe packet, increasing data throughput.
+ *
+ * \pre This function must only be called when the Host state machine is in the \ref HOST_STATE_Configured state or the
+ * call will fail.
+ *
+ * \param[in,out] CDCInterfaceInfo Pointer to a structure containing a CDC Class host configuration and state.
+ * \param[in] Buffer Pointer to a buffer containing the data to send to the device.
+ * \param[in] Length Length of the data to send to the device.
+ *
+ * \return A value from the \ref Pipe_Stream_RW_ErrorCodes_t enum.
+ */
+ uint8_t CDC_Host_SendData(USB_ClassInfo_CDC_Host_t* const CDCInterfaceInfo,
+ const void* const Buffer,
+ const uint16_t Length) ATTR_NON_NULL_PTR_ARG(1);
+
+ /** Sends a given data buffer from PROGMEM space to the attached USB device, if connected. If a device is not connected when the
+ * function is called, the string is discarded. Bytes will be queued for transmission to the host until either the pipe
+ * bank becomes full, or the \ref CDC_Host_Flush() function is called to flush the pending data to the device. This allows
+ * for multiple bytes to be packed into a single pipe packet, increasing data throughput.
+ *
+ * \pre This function must only be called when the Host state machine is in the \ref HOST_STATE_Configured state or
+ * the call will fail.
+ *
+ * \param[in,out] CDCInterfaceInfo Pointer to a structure containing a CDC Class host configuration and state.
+ * \param[in] Buffer Pointer to a buffer containing the data to send to the device.
+ * \param[in] Length Length of the data to send to the host.
+ *
+ * \return A value from the \ref Pipe_Stream_RW_ErrorCodes_t enum.
+ */
+ uint8_t CDC_Host_SendData_P(USB_ClassInfo_CDC_Host_t* const CDCInterfaceInfo,
+ const void* const Buffer,
+ const uint16_t Length) ATTR_NON_NULL_PTR_ARG(1);
+
+ /** Sends a given null-terminated string to the attached USB device, if connected. If a device is not connected when the
+ * function is called, the string is discarded. Bytes will be queued for transmission to the device until either the pipe
+ * bank becomes full, or the \ref CDC_Host_Flush() function is called to flush the pending data to the device. This allows
+ * for multiple bytes to be packed into a single pipe packet, increasing data throughput.
+ *
+ * \pre This function must only be called when the Host state machine is in the \ref HOST_STATE_Configured state or the
+ * call will fail.
+ *
+ * \param[in,out] CDCInterfaceInfo Pointer to a structure containing a CDC Class host configuration and state.
+ * \param[in] String Pointer to the null terminated string to send to the device.
+ *
+ * \return A value from the \ref Pipe_Stream_RW_ErrorCodes_t enum.
+ */
+ uint8_t CDC_Host_SendString(USB_ClassInfo_CDC_Host_t* const CDCInterfaceInfo,
+ const char* const String) ATTR_NON_NULL_PTR_ARG(1) ATTR_NON_NULL_PTR_ARG(2);
+
+ /** Sends a given null terminated string from PROGMEM space to the attached USB device, if connected. If a device is not connected
+ * when the function is called, the string is discarded. Bytes will be queued for transmission to the device until either
+ * the pipe bank becomes full, or the \ref CDC_Host_Flush() function is called to flush the pending data to
+ * the device. This allows for multiple bytes to be packed into a single pipe packet, increasing data throughput.
+ *
+ * \pre This function must only be called when the Host state machine is in the \ref HOST_STATE_Configured state or
+ * the call will fail.
+ *
+ * \param[in,out] CDCInterfaceInfo Pointer to a structure containing a CDC Class host configuration and state.
+ * \param[in] String Pointer to the null terminated string to send to the host.
+ *
+ * \return A value from the \ref Pipe_Stream_RW_ErrorCodes_t enum.
+ */
+ uint8_t CDC_Host_SendString_P(USB_ClassInfo_CDC_Host_t* const CDCInterfaceInfo,
+ const char* const String) ATTR_NON_NULL_PTR_ARG(1) ATTR_NON_NULL_PTR_ARG(2);
+
+ /** Sends a given byte to the attached USB device, if connected. If a device is not connected when the function is called, the
+ * byte is discarded. Bytes will be queued for transmission to the device until either the pipe bank becomes full, or the
+ * \ref CDC_Host_Flush() function is called to flush the pending data to the host. This allows for multiple bytes to be
+ * packed into a single pipe packet, increasing data throughput.
+ *
+ * \pre This function must only be called when the Host state machine is in the \ref HOST_STATE_Configured state or the
+ * call will fail.
+ *
+ * \param[in,out] CDCInterfaceInfo Pointer to a structure containing a CDC Class host configuration and state.
+ * \param[in] Data Byte of data to send to the device.
+ *
+ * \return A value from the \ref Pipe_WaitUntilReady_ErrorCodes_t enum.
+ */
+ uint8_t CDC_Host_SendByte(USB_ClassInfo_CDC_Host_t* const CDCInterfaceInfo,
+ const uint8_t Data) ATTR_NON_NULL_PTR_ARG(1);
+
+ /** Determines the number of bytes received by the CDC interface from the device, waiting to be read. This indicates the number
+ * of bytes in the IN pipe bank only, and thus the number of calls to \ref CDC_Host_ReceiveByte() which are guaranteed to succeed
+ * immediately. If multiple bytes are to be received, they should be buffered by the user application, as the pipe bank will not be
+ * released back to the USB controller until all bytes are read.
+ *
+ * \pre This function must only be called when the Host state machine is in the \ref HOST_STATE_Configured state or the
+ * call will fail.
+ *
+ * \param[in,out] CDCInterfaceInfo Pointer to a structure containing a CDC Class host configuration and state.
+ *
+ * \return Total number of buffered bytes received from the device.
+ */
+ uint16_t CDC_Host_BytesReceived(USB_ClassInfo_CDC_Host_t* const CDCInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);
+
+ /** Reads a byte of data from the device. If no data is waiting to be read of if a USB device is not connected, the function
+ * returns a negative value. The \ref CDC_Host_BytesReceived() function may be queried in advance to determine how many bytes
+ * are currently buffered in the CDC interface's data receive pipe.
+ *
+ * \pre This function must only be called when the Host state machine is in the \ref HOST_STATE_Configured state or the
+ * call will fail.
+ *
+ * \param[in,out] CDCInterfaceInfo Pointer to a structure containing a CDC Class host configuration and state.
+ *
+ * \return Next received byte from the device, or a negative value if no data received.
+ */
+ int16_t CDC_Host_ReceiveByte(USB_ClassInfo_CDC_Host_t* const CDCInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);
+
+ /** Flushes any data waiting to be sent, ensuring that the send buffer is cleared.
+ *
+ * \pre This function must only be called when the Host state machine is in the \ref HOST_STATE_Configured state or the
+ * call will fail.
+ *
+ * \param[in,out] CDCInterfaceInfo Pointer to a structure containing a CDC Class host configuration and state.
+ *
+ * \return A value from the \ref Pipe_WaitUntilReady_ErrorCodes_t enum.
+ */
+ uint8_t CDC_Host_Flush(USB_ClassInfo_CDC_Host_t* const CDCInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);
+
+ #if defined(FDEV_SETUP_STREAM) || defined(__DOXYGEN__)
+ /** Creates a standard character stream for the given CDC Device instance so that it can be used with all the regular
+ * functions in the standard \c <stdio.h> library that accept a \c FILE stream as a destination (e.g. \c fprintf). The created
+ * stream is bidirectional and can be used for both input and output functions.
+ *
+ * Reading data from this stream is non-blocking, i.e. in most instances, complete strings cannot be read in by a single
+ * fetch, as the endpoint will not be ready at some point in the transmission, aborting the transfer. However, this may
+ * be used when the read data is processed byte-per-bye (via \c getc()) or when the user application will implement its own
+ * line buffering.
+ *
+ * \note The created stream can be given as \c stdout if desired to direct the standard output from all \c <stdio.h> functions
+ * to the given CDC interface.
+ * \n\n
+ *
+ * \note This function is not available on all microcontroller architectures.
+ *
+ * \param[in,out] CDCInterfaceInfo Pointer to a structure containing a CDC Class configuration and state.
+ * \param[in,out] Stream Pointer to a FILE structure where the created stream should be placed.
+ */
+ void CDC_Host_CreateStream(USB_ClassInfo_CDC_Host_t* const CDCInterfaceInfo,
+ FILE* const Stream) ATTR_NON_NULL_PTR_ARG(1) ATTR_NON_NULL_PTR_ARG(2);
+
+ /** Identical to \ref CDC_Host_CreateStream(), except that reads are blocking until the calling stream function terminates
+ * the transfer. While blocking, the USB and CDC service tasks are called repeatedly to maintain USB communications.
+ *
+ * \note This function is not available on all microcontroller architectures.
+ *
+ * \param[in,out] CDCInterfaceInfo Pointer to a structure containing a CDC Class configuration and state.
+ * \param[in,out] Stream Pointer to a FILE structure where the created stream should be placed.
+ */
+ void CDC_Host_CreateBlockingStream(USB_ClassInfo_CDC_Host_t* const CDCInterfaceInfo,
+ FILE* const Stream) ATTR_NON_NULL_PTR_ARG(1) ATTR_NON_NULL_PTR_ARG(2);
+ #endif
+
+ /** CDC class driver event for a control line state change on a CDC host interface. This event fires each time the device notifies
+ * the host of a control line state change (containing the virtual serial control line states, such as DCD) and may be hooked in the
+ * user program by declaring a handler function with the same name and parameters listed here. The new control line states
+ * are available in the \c ControlLineStates.DeviceToHost value inside the CDC host interface structure passed as a parameter, set as
+ * a mask of \c CDC_CONTROL_LINE_IN_* masks.
+ *
+ * \param[in,out] CDCInterfaceInfo Pointer to a structure containing a CDC Class host configuration and state.
+ */
+ void EVENT_CDC_Host_ControLineStateChanged(USB_ClassInfo_CDC_Host_t* const CDCInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);
+
+ /* Private Interface - For use in library only: */
+ #if !defined(__DOXYGEN__)
+ /* Function Prototypes: */
+ #if defined(__INCLUDE_FROM_CDC_HOST_C)
+ #if defined(FDEV_SETUP_STREAM)
+ static int CDC_Host_putchar(char c,
+ FILE* Stream) ATTR_NON_NULL_PTR_ARG(2);
+ static int CDC_Host_getchar(FILE* Stream) ATTR_NON_NULL_PTR_ARG(1);
+ static int CDC_Host_getchar_Blocking(FILE* Stream) ATTR_NON_NULL_PTR_ARG(1);
+ #endif
+
+ void CDC_Host_Event_Stub(void) ATTR_CONST;
+
+ void EVENT_CDC_Host_ControLineStateChanged(USB_ClassInfo_CDC_Host_t* const CDCInterfaceInfo)
+ ATTR_WEAK ATTR_NON_NULL_PTR_ARG(1) ATTR_ALIAS(CDC_Host_Event_Stub);
+
+ static uint8_t DCOMP_CDC_Host_NextCDCControlInterface(void* const CurrentDescriptor)
+ ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(1);
+ static uint8_t DCOMP_CDC_Host_NextCDCDataInterface(void* const CurrentDescriptor)
+ ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(1);
+ static uint8_t DCOMP_CDC_Host_NextCDCInterfaceEndpoint(void* const CurrentDescriptor)
+ ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(1);
+ #endif
+ #endif
+
+ /* Disable C linkage for C++ Compilers: */
+ #if defined(__cplusplus)
+ }
+ #endif
+
+#endif
+
+/** @} */
+
projects / qmk_firmware.git / blobdiff