|
|
|
|
/*
|
|
|
|
|
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_USBClassPrinterDevice_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_USBClassPrinterDevice_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.
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
volatile bool IsPrinterReset; /**< Flag indicating that the host has requested that the Printer interface be reset
|
|
|
|
|
* and that all current Mass Storage operations should immediately abort.
|
|
|
|
|
*/
|
|
|
|
|
} 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);
|
|
|
|
|
|
|
|
|
|
/** Printer class driver event for a soft reset request on a Printer interface. This event fires each time the host
|
|
|
|
|
* requests a reset of the printer interface's internal state, and may be hooked in the user program by declaring a
|
|
|
|
|
* handler function with the same name and parameters listed here.
|
|
|
|
|
*
|
|
|
|
|
* \param[in,out] PRNTInterfaceInfo Pointer to a structure containing a Printer Class configuration and state.
|
|
|
|
|
*/
|
|
|
|
|
void EVENT_PRNT_Device_SoftReset(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
|
|
|
|
|
|
|
|
|
|
/** @} */
|
|
|
|
|
|
