--- /dev/null
+/*
+ LUFA Library
+ Copyright (C) Dean Camera, 2013.
+
+ dean [at] fourwalledcubicle [dot] com
+ www.lufa-lib.org
+*/
+
+/*
+ Copyright 2013 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 Device mode driver for the library USB Printer Class driver.
+ *
+ * Device mode driver for the library USB Printer 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_USBClassPrinter
+ * \defgroup Group_USBClassPrinterDevice Printer Class Device Mode Driver
+ *
+ * \section Sec_Dependencies Module Source Dependencies
+ * The following files must be built with any user project that uses this module:
+ * - LUFA/Drivers/USB/Class/Device/PrinterClassDevice.c <i>(Makefile source module name: LUFA_SRC_USBCLASS)</i>
+ *
+ * \section Sec_ModDescription Module Description
+ * Device Mode USB Class driver framework interface, for the Printer USB Class driver.
+ *
+ * @{
+ */
+
+#ifndef _PRINTER_CLASS_DEVICE_H_
+#define _PRINTER_CLASS_DEVICE_H_
+
+ /* Includes: */
+ #include "../../USB.h"
+ #include "../Common/PrinterClassCommon.h"
+
+ #include <stdio.h>
+
+ /* Enable C linkage for C++ Compilers: */
+ #if defined(__cplusplus)
+ extern "C" {
+ #endif
+
+ /* Preprocessor Checks: */
+ #if !defined(__INCLUDE_FROM_PRINTER_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 Printer Class Device Mode Configuration and State Structure.
+ *
+ * Class state structure. An instance of this structure should be made for each Printer interface
+ * within the user application, and passed to each of the Printer class driver functions as the
+ * PRNTInterfaceInfo parameter. This stores each Printer interface's configuration and state information.
+ */
+ typedef struct
+ {
+ struct
+ {
+ uint8_t InterfaceNumber; /**< Interface number of the Printer interface within the device. */
+
+ USB_Endpoint_Table_t DataINEndpoint; /**< Data IN endpoint configuration table. */
+ USB_Endpoint_Table_t DataOUTEndpoint; /**< Data OUT endpoint configuration table. */
+
+ char* IEEE1284String; /**< IEEE 1284 identification string, sent to the host during enumeration
+ * to identify the printer model, manufacturer and other characteristics. */
+ } 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
+ {
+ uint8_t PortStatus; /**< Current status of the Printer virtual port, a collection of \c PRNT_PORTSTATUS_*
+ * bitmask values. */
+ } State; /**< State data for the USB class interface within the device. All elements in this section
+ * are reset to their defaults when the interface is enumerated.
+ */
+ } USB_ClassInfo_PRNT_Device_t;
+
+ /* Function Prototypes: */
+ /** Configures the endpoints of a given Printer interface, ready for use. This should be linked to the library
+ * \ref EVENT_USB_Device_ConfigurationChanged() event so that the endpoints are configured when the configuration containing
+ * the given Printer interface is selected.
+ *
+ * \param[in,out] PRNTInterfaceInfo Pointer to a structure containing a Printer Class configuration and state.
+ *
+ * \return Boolean \c true if the endpoints were successfully configured, \c false otherwise.
+ */
+ bool PRNT_Device_ConfigureEndpoints(USB_ClassInfo_PRNT_Device_t* const PRNTInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);
+
+ /** Processes incoming control requests from the host, that are directed to the given Printer class interface. This should be
+ * linked to the library \ref EVENT_USB_Device_ControlRequest() event.
+ *
+ * \param[in,out] PRNTInterfaceInfo Pointer to a structure containing a Printer Class configuration and state.
+ */
+ void PRNT_Device_ProcessControlRequest(USB_ClassInfo_PRNT_Device_t* const PRNTInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);
+
+ /** General management task for a given Printer 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] PRNTInterfaceInfo Pointer to a structure containing a Printer Class configuration and state.
+ */
+ void PRNT_Device_USBTask(USB_ClassInfo_PRNT_Device_t* const PRNTInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);
+
+ /** Sends a given data buffer to the attached USB host, if connected. If a host is not connected when the function is
+ * called, the string is discarded. Bytes will be queued for transmission to the host until either the endpoint bank
+ * becomes full, or the \ref PRNT_Device_Flush() function is called to flush the pending data to the host. This allows
+ * for multiple bytes to be packed into a single endpoint packet, increasing data throughput.
+ *
+ * \pre This function must only be called when the Device state machine is in the \ref DEVICE_STATE_Configured state or
+ * the call will fail.
+ *
+ * \param[in,out] PRNTInterfaceInfo Pointer to a structure containing a Printer Class 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 Endpoint_Stream_RW_ErrorCodes_t enum.
+ */
+ uint8_t PRNT_Device_SendData(USB_ClassInfo_PRNT_Device_t* const PRNTInterfaceInfo,
+ const void* const Buffer,
+ const uint16_t Length) ATTR_NON_NULL_PTR_ARG(1) ATTR_NON_NULL_PTR_ARG(2);
+
+ /** Sends a given null terminated string to the attached USB host, if connected. If a host is not connected when
+ * the function is called, the string is discarded. Bytes will be queued for transmission to the host until either
+ * the endpoint bank becomes full, or the \ref PRNT_Device_Flush() function is called to flush the pending data to
+ * the host. This allows for multiple bytes to be packed into a single endpoint packet, increasing data throughput.
+ *
+ * \pre This function must only be called when the Device state machine is in the \ref DEVICE_STATE_Configured state or
+ * the call will fail.
+ *
+ * \param[in,out] PRNTInterfaceInfo Pointer to a structure containing a Printer Class configuration and state.
+ * \param[in] String Pointer to the null terminated string to send to the host.
+ *
+ * \return A value from the \ref Endpoint_Stream_RW_ErrorCodes_t enum.
+ */
+ uint8_t PRNT_Device_SendString(USB_ClassInfo_PRNT_Device_t* const PRNTInterfaceInfo,
+ const char* const String) ATTR_NON_NULL_PTR_ARG(1) ATTR_NON_NULL_PTR_ARG(2);
+
+ /** Sends a given byte to the attached USB host, if connected. If a host is not connected when the function is called, the
+ * byte is discarded. Bytes will be queued for transmission to the host until either the endpoint bank becomes full, or the
+ * \ref PRNT_Device_Flush() function is called to flush the pending data to the host. This allows for multiple bytes to be
+ * packed into a single endpoint packet, increasing data throughput.
+ *
+ * \pre This function must only be called when the Device state machine is in the \ref DEVICE_STATE_Configured state or
+ * the call will fail.
+ *
+ * \param[in,out] PRNTInterfaceInfo Pointer to a structure containing a Printer Class configuration and state.
+ * \param[in] Data Byte of data to send to the host.
+ *
+ * \return A value from the \ref Endpoint_WaitUntilReady_ErrorCodes_t enum.
+ */
+ uint8_t PRNT_Device_SendByte(USB_ClassInfo_PRNT_Device_t* const PRNTInterfaceInfo,
+ const uint8_t Data) ATTR_NON_NULL_PTR_ARG(1);
+
+ /** Determines the number of bytes received by the Printer interface from the host, waiting to be read. This indicates the number
+ * of bytes in the OUT endpoint bank only, and thus the number of calls to \ref PRNT_Device_ReceiveByte() which are guaranteed to
+ * succeed immediately. If multiple bytes are to be received, they should be buffered by the user application, as the endpoint
+ * bank will not be released back to the USB controller until all bytes are read.
+ *
+ * \pre This function must only be called when the Device state machine is in the \ref DEVICE_STATE_Configured state or
+ * the call will fail.
+ *
+ * \param[in,out] PRNTInterfaceInfo Pointer to a structure containing a Printer Class configuration and state.
+ *
+ * \return Total number of buffered bytes received from the host.
+ */
+ uint16_t PRNT_Device_BytesReceived(USB_ClassInfo_PRNT_Device_t* const PRNTInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);
+
+ /** Reads a byte of data from the host. If no data is waiting to be read of if a USB host is not connected, the function
+ * returns a negative value. The \ref PRNT_Device_BytesReceived() function may be queried in advance to determine how many
+ * bytes are currently buffered in the Printer interface's data receive endpoint bank, and thus how many repeated calls to this
+ * function which are guaranteed to succeed.
+ *
+ * \pre This function must only be called when the Device state machine is in the \ref DEVICE_STATE_Configured state or
+ * the call will fail.
+ *
+ * \param[in,out] PRNTInterfaceInfo Pointer to a structure containing a Printer Class configuration and state.
+ *
+ * \return Next received byte from the host, or a negative value if no data received.
+ */
+ int16_t PRNT_Device_ReceiveByte(USB_ClassInfo_PRNT_Device_t* const PRNTInterfaceInfo) 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 Device state machine is in the \ref DEVICE_STATE_Configured state or
+ * the call will fail.
+ *
+ * \param[in,out] PRNTInterfaceInfo Pointer to a structure containing a Printer Class configuration and state.
+ *
+ * \return A value from the \ref Endpoint_WaitUntilReady_ErrorCodes_t enum.
+ */
+ uint8_t PRNT_Device_Flush(USB_ClassInfo_PRNT_Device_t* const PRNTInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);
+
+ #if defined(FDEV_SETUP_STREAM) || defined(__DOXYGEN__)
+ /** Creates a standard character stream for the given Printer Device instance so that it can be used with all the regular
+ * functions in the standard <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 Printer interface.
+ * \n\n
+ *
+ * \note This function is not available on all microcontroller architectures.
+ *
+ * \param[in,out] PRNTInterfaceInfo Pointer to a structure containing a Printer Class configuration and state.
+ * \param[in,out] Stream Pointer to a FILE structure where the created stream should be placed.
+ */
+ void PRNT_Device_CreateStream(USB_ClassInfo_PRNT_Device_t* const PRNTInterfaceInfo,
+ FILE* const Stream) ATTR_NON_NULL_PTR_ARG(1) ATTR_NON_NULL_PTR_ARG(2);
+
+ /** Identical to \ref PRNT_Device_CreateStream(), except that reads are blocking until the calling stream function terminates
+ * the transfer. While blocking, the USB and Printer service tasks are called repeatedly to maintain USB communications.
+ *
+ * \note This function is not available on all microcontroller architectures.
+ *
+ * \param[in,out] PRNTInterfaceInfo Pointer to a structure containing a Printer Class configuration and state.
+ * \param[in,out] Stream Pointer to a FILE structure where the created stream should be placed.
+ */
+ void PRNT_Device_CreateBlockingStream(USB_ClassInfo_PRNT_Device_t* const PRNTInterfaceInfo,
+ FILE* const Stream) ATTR_NON_NULL_PTR_ARG(1) ATTR_NON_NULL_PTR_ARG(2);
+ #endif
+
+ /* Private Interface - For use in library only: */
+ #if !defined(__DOXYGEN__)
+ /* Function Prototypes: */
+ #if defined(__INCLUDE_FROM_PRINTER_DEVICE_C)
+ #if defined(FDEV_SETUP_STREAM)
+ static int PRNT_Device_putchar(char c,
+ FILE* Stream) ATTR_NON_NULL_PTR_ARG(2);
+ static int PRNT_Device_getchar(FILE* Stream) ATTR_NON_NULL_PTR_ARG(1);
+ static int PRNT_Device_getchar_Blocking(FILE* Stream) ATTR_NON_NULL_PTR_ARG(1);
+ #endif
+
+ void PRNT_Device_Event_Stub(void) ATTR_CONST;
+
+ void EVENT_PRNT_Device_SoftReset(USB_ClassInfo_PRNT_Device_t* const PRNTInterfaceInfo)
+ ATTR_WEAK ATTR_NON_NULL_PTR_ARG(1) ATTR_ALIAS(PRNT_Device_Event_Stub);
+
+ #endif
+
+ #endif
+
+ /* Disable C linkage for C++ Compilers: */
+ #if defined(__cplusplus)
+ }
+ #endif
+
+#endif
+
+/** @} */
+
projects / pub / lufa.git / blobdiff