X-Git-Url: https://sigrok.org/gitweb/?p=libserialport.git;a=blobdiff_plain;f=libserialport.h.in;h=8962ef8d942eb5fb6f368408b62feea9998a2a97;hp=b41bf9965d4705ec090d537c18c7e87985dd3012;hb=HEAD;hpb=f77bb46df5d883527da8b7eb4a5328ea7e990dbb diff --git a/libserialport.h.in b/libserialport.h.in deleted file mode 100644 index b41bf99..0000000 --- a/libserialport.h.in +++ /dev/null @@ -1,1713 +0,0 @@ -/* - * This file is part of the libserialport project. - * - * Copyright (C) 2013, 2015 Martin Ling - * Copyright (C) 2014 Uwe Hermann - * Copyright (C) 2014 Aurelien Jacobs - * - * This program is free software: you can redistribute it and/or modify - * it under the terms of the GNU Lesser General Public License as - * published by the Free Software Foundation, either version 3 of the - * License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public License - * along with this program. If not, see . - */ - -/** - * @mainpage libserialport API - * - * Introduction - * ============ - * - * libserialport is a minimal library written in C that is intended to take - * care of the OS-specific details when writing software that uses serial ports. - * - * By writing your serial code to use libserialport, you enable it to work - * transparently on any platform supported by the library. - * - * libserialport is an open source project released under the LGPL3+ license. - * - * The library is maintained by the [sigrok](http://sigrok.org/) project. See - * the [libserialport homepage](http://sigrok.org/wiki/Libserialport) for the - * latest information. - * - * Source code is maintained in git at - * [git://sigrok.org/libserialport](http://sigrok.org/gitweb/?p=libserialport.git). - * - * Bugs are tracked at http://sigrok.org/bugzilla/. - * - * The library was conceived and designed by Martin Ling, is maintained by - * Uwe Hermann, and has received contributions from several other developers. - * See the git history for full credits. - * - * API information - * =============== - * - * The API has been designed from scratch. It does not exactly resemble the - * serial API of any particular operating system. Instead it aims to provide - * a set of functions that can reliably be implemented across all operating - * systems. These form a sufficient basis for higher level behaviour to - * be implemented in a platform independent manner. - * - * If you are porting code written for a particular OS, you may find you need - * to restructure things somewhat, or do without some specialised features. - * For particular notes on porting existing code, see @ref Porting. - * - * The following subsections will help explain the principles of the API. - * - * Headers - * ------- - * - * To use libserialport functions in your code, you should include the - * libserialport.h header, i.e. "#include ". - * - * Namespace - * --------- - * - * All identifiers defined by the public libserialport headers use the prefix - * sp_ (for functions and data types) or SP_ (for macros and constants). - * - * Functions - * --------- - * - * The functions provided by the library are documented in detail in - * the following sections: - * - * - @ref Enumeration (obtaining a list of serial ports on the system) - * - @ref Ports (opening, closing and getting information about ports) - * - @ref Configuration (baud rate, parity, etc.) - * - @ref Signals (modem control lines, breaks, etc.) - * - @ref Data (reading and writing data, and buffer management) - * - @ref Waiting (waiting for ports to be ready, integrating with event loops) - * - @ref Errors (getting error and debugging information) - * - * Data structures - * --------------- - * - * The library defines three data structures: - * - * - @ref sp_port, which represents a serial port. - * See @ref Enumeration. - * - @ref sp_port_config, which represents a port configuration. - * See @ref Configuration. - * - @ref sp_event_set, which represents a set of events. - * See @ref Waiting. - * - * All these structures are allocated and freed by library functions. It is - * the caller's responsibility to ensure that the correct calls are made to - * free allocated structures after use. - * - * Return codes and error handling - * ------------------------------- - * - * Most functions have return type @ref sp_return and can return only four - * possible error values: - * - * - @ref SP_ERR_ARG means that a function was called with invalid - * arguments. This implies a bug in the caller. The arguments passed would - * be invalid regardless of the underlying OS or serial device involved. - * - * - @ref SP_ERR_FAIL means that the OS reported a failure. The error code or - * message provided by the OS can be obtained by calling sp_last_error_code() - * or sp_last_error_message(). - * - * - @ref SP_ERR_SUPP indicates that there is no support for the requested - * operation in the current OS, driver or device. No error message is - * available from the OS in this case. There is either no way to request - * the operation in the first place, or libserialport does not know how to - * do so in the current version. - * - * - @ref SP_ERR_MEM indicates that a memory allocation failed. - * - * All of these error values are negative. - * - * Calls that succeed return @ref SP_OK, which is equal to zero. Some functions - * declared @ref sp_return can also return a positive value for a successful - * numeric result, e.g. sp_blocking_read() or sp_blocking_write(). - * - * An error message is only available via sp_last_error_message() in the case - * where SP_ERR_FAIL was returned by the previous function call. The error - * message returned is that provided by the OS, using the current language - * settings. It is an error to call sp_last_error_code() or - * sp_last_error_message() except after a previous function call returned - * SP_ERR_FAIL. The library does not define its own error codes or messages - * to accompany other return codes. - * - * Thread safety - * ------------- - * - * Certain combinations of calls can be made concurrently, as follows. - * - * - Calls using different ports may always be made concurrently, i.e. - * it is safe for separate threads to handle their own ports. - * - * - Calls using the same port may be made concurrently when one call - * is a read operation and one call is a write operation, i.e. it is safe - * to use separate "reader" and "writer" threads for the same port. See - * below for which operations meet these definitions. - * - * Read operations: - * - * - sp_blocking_read() - * - sp_blocking_read_next() - * - sp_nonblocking_read() - * - sp_input_waiting() - * - sp_flush() with @ref SP_BUF_INPUT only. - * - sp_wait() with @ref SP_EVENT_RX_READY only. - * - * Write operations: - * - * - sp_blocking_write() - * - sp_nonblocking_write() - * - sp_output_waiting() - * - sp_drain() - * - sp_flush() with @ref SP_BUF_OUTPUT only. - * - sp_wait() with @ref SP_EVENT_TX_READY only. - * - * If two calls, on the same port, do not fit into one of these categories - * each, then they may not be made concurrently. - * - * Debugging - * --------- - * - * The library can output extensive tracing and debugging information. The - * simplest way to use this is to set the environment variable - * LIBSERIALPORT_DEBUG to any value; messages will then be output to the - * standard error stream. - * - * This behaviour is implemented by a default debug message handling - * callback. An alternative callback can be set using sp_set_debug_handler(), - * in order to e.g. redirect the output elsewhere or filter it. - * - * No guarantees are made about the content of the debug output; it is chosen - * to suit the needs of the developers and may change between releases. - * - * @anchor Porting - * Porting - * ------- - * - * The following guidelines may help when porting existing OS-specific code - * to use libserialport. - * - * ### Porting from Unix-like systems ### - * - * There are two main differences to note when porting code written for Unix. - * - * The first is that Unix traditionally provides a wide range of functionality - * for dealing with serial devices at the OS level; this is exposed through the - * termios API and dates to the days when serial terminals were common. If your - * code relies on many of these facilities you will need to adapt it, because - * libserialport provides only a raw binary channel with no special handling. - * - * The second relates to blocking versus non-blocking I/O behaviour. In - * Unix-like systems this is normally specified by setting the O_NONBLOCK - * flag on the file descriptor, affecting the semantics of subsequent read() - * and write() calls. - * - * In libserialport, blocking and nonblocking operations are both available at - * any time. If your existing code ѕets O_NONBLOCK, you should use - * sp_nonblocking_read() and sp_nonblocking_write() to get the same behaviour - * as your existing read() and write() calls. If it does not, you should use - * sp_blocking_read() and sp_blocking_write() instead. You may also find - * sp_blocking_read_next() useful, which reproduces the semantics of a blocking - * read() with VTIME = 0 and VMIN = 1 set in termios. - * - * Finally, you should take care if your program uses custom signal handlers. - * The blocking calls provided by libserialport will restart system calls that - * return with EINTR, so you will need to make your own arrangements if you - * need to interrupt blocking operations when your signal handlers are called. - * This is not an issue if you only use the default handlers. - * - * ### Porting from Windows ### - * - * The main consideration when porting from Windows is that there is no - * direct equivalent for overlapped I/O operations. - * - * If your program does not use overlapped I/O, you can simply use - * sp_blocking_read() and sp_blocking_write() as direct equivalents for - * ReadFile() and WriteFile(). You may also find sp_blocking_read_next() - * useful, which reproduces the special semantics of ReadFile() with - * ReadIntervalTimeout and ReadTotalTimeoutMultiplier set to MAXDWORD - * and 0 < ReadTotalTimeoutConstant < MAXDWORD. - * - * If your program makes use of overlapped I/O to continue work while a serial - * operation is in progress, then you can achieve the same results using - * sp_nonblocking_read() and sp_nonblocking_write(). - * - * Generally, overlapped I/O is combined with either waiting for completion - * once there is no more background work to do (using WaitForSingleObject() or - * WaitForMultipleObjects()), or periodically checking for completion with - * GetOverlappedResult(). If the aim is to start a new operation for further - * data once the previous one has completed, you can instead simply call the - * nonblocking functions again with the next data. If you need to wait for - * completion, use sp_wait() to determine when the port is ready to send or - * receive further data. - */ - -#ifndef LIBSERIALPORT_LIBSERIALPORT_H -#define LIBSERIALPORT_LIBSERIALPORT_H - -#ifdef __cplusplus -extern "C" { -#endif - -#include - -/** Return values. */ -enum sp_return { - /** Operation completed successfully. */ - SP_OK = 0, - /** Invalid arguments were passed to the function. */ - SP_ERR_ARG = -1, - /** A system error occurred while executing the operation. */ - SP_ERR_FAIL = -2, - /** A memory allocation failed while executing the operation. */ - SP_ERR_MEM = -3, - /** The requested operation is not supported by this system or device. */ - SP_ERR_SUPP = -4 -}; - -/** Port access modes. */ -enum sp_mode { - /** Open port for read access. */ - SP_MODE_READ = 1, - /** Open port for write access. */ - SP_MODE_WRITE = 2, - /** Open port for read and write access. @since 0.1.1 */ - SP_MODE_READ_WRITE = 3 -}; - -/** Port events. */ -enum sp_event { - /** Data received and ready to read. */ - SP_EVENT_RX_READY = 1, - /** Ready to transmit new data. */ - SP_EVENT_TX_READY = 2, - /** Error occurred. */ - SP_EVENT_ERROR = 4 -}; - -/** Buffer selection. */ -enum sp_buffer { - /** Input buffer. */ - SP_BUF_INPUT = 1, - /** Output buffer. */ - SP_BUF_OUTPUT = 2, - /** Both buffers. */ - SP_BUF_BOTH = 3 -}; - -/** Parity settings. */ -enum sp_parity { - /** Special value to indicate setting should be left alone. */ - SP_PARITY_INVALID = -1, - /** No parity. */ - SP_PARITY_NONE = 0, - /** Odd parity. */ - SP_PARITY_ODD = 1, - /** Even parity. */ - SP_PARITY_EVEN = 2, - /** Mark parity. */ - SP_PARITY_MARK = 3, - /** Space parity. */ - SP_PARITY_SPACE = 4 -}; - -/** RTS pin behaviour. */ -enum sp_rts { - /** Special value to indicate setting should be left alone. */ - SP_RTS_INVALID = -1, - /** RTS off. */ - SP_RTS_OFF = 0, - /** RTS on. */ - SP_RTS_ON = 1, - /** RTS used for flow control. */ - SP_RTS_FLOW_CONTROL = 2 -}; - -/** CTS pin behaviour. */ -enum sp_cts { - /** Special value to indicate setting should be left alone. */ - SP_CTS_INVALID = -1, - /** CTS ignored. */ - SP_CTS_IGNORE = 0, - /** CTS used for flow control. */ - SP_CTS_FLOW_CONTROL = 1 -}; - -/** DTR pin behaviour. */ -enum sp_dtr { - /** Special value to indicate setting should be left alone. */ - SP_DTR_INVALID = -1, - /** DTR off. */ - SP_DTR_OFF = 0, - /** DTR on. */ - SP_DTR_ON = 1, - /** DTR used for flow control. */ - SP_DTR_FLOW_CONTROL = 2 -}; - -/** DSR pin behaviour. */ -enum sp_dsr { - /** Special value to indicate setting should be left alone. */ - SP_DSR_INVALID = -1, - /** DSR ignored. */ - SP_DSR_IGNORE = 0, - /** DSR used for flow control. */ - SP_DSR_FLOW_CONTROL = 1 -}; - -/** XON/XOFF flow control behaviour. */ -enum sp_xonxoff { - /** Special value to indicate setting should be left alone. */ - SP_XONXOFF_INVALID = -1, - /** XON/XOFF disabled. */ - SP_XONXOFF_DISABLED = 0, - /** XON/XOFF enabled for input only. */ - SP_XONXOFF_IN = 1, - /** XON/XOFF enabled for output only. */ - SP_XONXOFF_OUT = 2, - /** XON/XOFF enabled for input and output. */ - SP_XONXOFF_INOUT = 3 -}; - -/** Standard flow control combinations. */ -enum sp_flowcontrol { - /** No flow control. */ - SP_FLOWCONTROL_NONE = 0, - /** Software flow control using XON/XOFF characters. */ - SP_FLOWCONTROL_XONXOFF = 1, - /** Hardware flow control using RTS/CTS signals. */ - SP_FLOWCONTROL_RTSCTS = 2, - /** Hardware flow control using DTR/DSR signals. */ - SP_FLOWCONTROL_DTRDSR = 3 -}; - -/** Input signals. */ -enum sp_signal { - /** Clear to send. */ - SP_SIG_CTS = 1, - /** Data set ready. */ - SP_SIG_DSR = 2, - /** Data carrier detect. */ - SP_SIG_DCD = 4, - /** Ring indicator. */ - SP_SIG_RI = 8 -}; - -/** - * Transport types. - * - * @since 0.1.1 - */ -enum sp_transport { - /** Native platform serial port. @since 0.1.1 */ - SP_TRANSPORT_NATIVE, - /** USB serial port adapter. @since 0.1.1 */ - SP_TRANSPORT_USB, - /** Bluetooth serial port adapter. @since 0.1.1 */ - SP_TRANSPORT_BLUETOOTH -}; - -/** - * @struct sp_port - * An opaque structure representing a serial port. - */ -struct sp_port; - -/** - * @struct sp_port_config - * An opaque structure representing the configuration for a serial port. - */ -struct sp_port_config; - -/** - * @struct sp_event_set - * A set of handles to wait on for events. - */ -struct sp_event_set { - /** Array of OS-specific handles. */ - void *handles; - /** Array of bitmasks indicating which events apply for each handle. */ - enum sp_event *masks; - /** Number of handles. */ - unsigned int count; -}; - -/** - * @defgroup Enumeration Port enumeration - * - * Enumerating the serial ports of a system. - * - * @{ - */ - -/** - * Obtain a pointer to a new sp_port structure representing the named port. - * - * The user should allocate a variable of type "struct sp_port *" and pass a - * pointer to this to receive the result. - * - * The result should be freed after use by calling sp_free_port(). - * - * @param[in] portname The OS-specific name of a serial port. Must not be NULL. - * @param[out] port_ptr If any error is returned, the variable pointed to by - * port_ptr will be set to NULL. Otherwise, it will be set - * to point to the newly allocated port. Must not be NULL. - * - * @return SP_OK upon success, a negative error code otherwise. - * - * @since 0.1.0 - */ -enum sp_return sp_get_port_by_name(const char *portname, struct sp_port **port_ptr); - -/** - * Free a port structure obtained from sp_get_port_by_name() or sp_copy_port(). - * - * @param[in] port Pointer to a port structure. Must not be NULL. - * - * @since 0.1.0 - */ -void sp_free_port(struct sp_port *port); - -/** - * List the serial ports available on the system. - * - * The result obtained is an array of pointers to sp_port structures, - * terminated by a NULL. The user should allocate a variable of type - * "struct sp_port **" and pass a pointer to this to receive the result. - * - * The result should be freed after use by calling sp_free_port_list(). - * If a port from the list is to be used after freeing the list, it must be - * copied first using sp_copy_port(). - * - * @param[out] list_ptr If any error is returned, the variable pointed to by - * list_ptr will be set to NULL. Otherwise, it will be set - * to point to the newly allocated array. Must not be NULL. - * - * @return SP_OK upon success, a negative error code otherwise. - * - * @since 0.1.0 - */ -enum sp_return sp_list_ports(struct sp_port ***list_ptr); - -/** - * Make a new copy of an sp_port structure. - * - * The user should allocate a variable of type "struct sp_port *" and pass a - * pointer to this to receive the result. - * - * The copy should be freed after use by calling sp_free_port(). - * - * @param[in] port Pointer to a port structure. Must not be NULL. - * @param[out] copy_ptr If any error is returned, the variable pointed to by - * copy_ptr will be set to NULL. Otherwise, it will be set - * to point to the newly allocated copy. Must not be NULL. - * - * @return SP_OK upon success, a negative error code otherwise. - * - * @since 0.1.0 - */ -enum sp_return sp_copy_port(const struct sp_port *port, struct sp_port **copy_ptr); - -/** - * Free a port list obtained from sp_list_ports(). - * - * This will also free all the sp_port structures referred to from the list; - * any that are to be retained must be copied first using sp_copy_port(). - * - * @param[in] ports Pointer to a list of port structures. Must not be NULL. - * - * @since 0.1.0 - */ -void sp_free_port_list(struct sp_port **ports); - -/** - * @} - * @defgroup Ports Port handling - * - * Opening, closing and querying ports. - * - * @{ - */ - -/** - * Open the specified serial port. - * - * @param[in] port Pointer to a port structure. Must not be NULL. - * @param[in] flags Flags to use when opening the serial port. - * - * @return SP_OK upon success, a negative error code otherwise. - * - * @since 0.1.0 - */ -enum sp_return sp_open(struct sp_port *port, enum sp_mode flags); - -/** - * Close the specified serial port. - * - * @param[in] port Pointer to a port structure. Must not be NULL. - * - * @return SP_OK upon success, a negative error code otherwise. - * - * @since 0.1.0 - */ -enum sp_return sp_close(struct sp_port *port); - -/** - * Get the name of a port. - * - * The name returned is whatever is normally used to refer to a port on the - * current operating system; e.g. for Windows it will usually be a "COMn" - * device name, and for Unix it will be a device path beginning with "/dev/". - * - * @param[in] port Pointer to a port structure. Must not be NULL. - * - * @return The port name, or NULL if an invalid port is passed. The name - * string is part of the port structure and may not be used after - * the port structure has been freed. - * - * @since 0.1.0 - */ -char *sp_get_port_name(const struct sp_port *port); - -/** - * Get a description for a port, to present to end user. - * - * @param[in] port Pointer to a port structure. Must not be NULL. - * - * @return The port description, or NULL if an invalid port is passed. - * The description string is part of the port structure and may not - * be used after the port structure has been freed. - * - * @since 0.1.1 - */ -char *sp_get_port_description(const struct sp_port *port); - -/** - * Get the transport type used by a port. - * - * @param[in] port Pointer to a port structure. Must not be NULL. - * - * @return The port transport type. - * - * @since 0.1.1 - */ -enum sp_transport sp_get_port_transport(const struct sp_port *port); - -/** - * Get the USB bus number and address on bus of a USB serial adapter port. - * - * @param[in] port Pointer to a port structure. Must not be NULL. - * @param[out] usb_bus Pointer to a variable to store the USB bus. - * Can be NULL (in that case it will be ignored). - * @param[out] usb_address Pointer to a variable to store the USB address. - * Can be NULL (in that case it will be ignored). - * - * @return SP_OK upon success, a negative error code otherwise. - * - * @since 0.1.1 - */ -enum sp_return sp_get_port_usb_bus_address(const struct sp_port *port, - int *usb_bus, int *usb_address); - -/** - * Get the USB Vendor ID and Product ID of a USB serial adapter port. - * - * @param[in] port Pointer to a port structure. Must not be NULL. - * @param[out] usb_vid Pointer to a variable to store the USB VID. - * Can be NULL (in that case it will be ignored). - * @param[out] usb_pid Pointer to a variable to store the USB PID. - * Can be NULL (in that case it will be ignored). - * - * @return SP_OK upon success, a negative error code otherwise. - * - * @since 0.1.1 - */ -enum sp_return sp_get_port_usb_vid_pid(const struct sp_port *port, int *usb_vid, int *usb_pid); - -/** - * Get the USB manufacturer string of a USB serial adapter port. - * - * @param[in] port Pointer to a port structure. Must not be NULL. - * - * @return The port manufacturer string, or NULL if an invalid port is passed. - * The manufacturer string is part of the port structure and may not - * be used after the port structure has been freed. - * - * @since 0.1.1 - */ -char *sp_get_port_usb_manufacturer(const struct sp_port *port); - -/** - * Get the USB product string of a USB serial adapter port. - * - * @param[in] port Pointer to a port structure. Must not be NULL. - * - * @return The port product string, or NULL if an invalid port is passed. - * The product string is part of the port structure and may not be - * used after the port structure has been freed. - * - * @since 0.1.1 - */ -char *sp_get_port_usb_product(const struct sp_port *port); - -/** - * Get the USB serial number string of a USB serial adapter port. - * - * @param[in] port Pointer to a port structure. Must not be NULL. - * - * @return The port serial number, or NULL if an invalid port is passed. - * The serial number string is part of the port structure and may - * not be used after the port structure has been freed. - * - * @since 0.1.1 - */ -char *sp_get_port_usb_serial(const struct sp_port *port); - -/** - * Get the MAC address of a Bluetooth serial adapter port. - * - * @param[in] port Pointer to a port structure. Must not be NULL. - * - * @return The port MAC address, or NULL if an invalid port is passed. - * The MAC address string is part of the port structure and may not - * be used after the port structure has been freed. - * - * @since 0.1.1 - */ -char *sp_get_port_bluetooth_address(const struct sp_port *port); - -/** - * Get the operating system handle for a port. - * - * The type of the handle depends on the operating system. On Unix based - * systems, the handle is a file descriptor of type "int". On Windows, the - * handle is of type "HANDLE". The user should allocate a variable of the - * appropriate type and pass a pointer to this to receive the result. - * - * To obtain a valid handle, the port must first be opened by calling - * sp_open() using the same port structure. - * - * After the port is closed or the port structure freed, the handle may - * no longer be valid. - * - * @warning This feature is provided so that programs may make use of - * OS-specific functionality where desired. Doing so obviously - * comes at a cost in portability. It also cannot be guaranteed - * that direct usage of the OS handle will not conflict with the - * library's own usage of the port. Be careful. - * - * @param[in] port Pointer to a port structure. Must not be NULL. - * @param[out] result_ptr If any error is returned, the variable pointed to by - * result_ptr will have unknown contents and should not - * be used. Otherwise, it will be set to point to the - * OS handle. Must not be NULL. - * - * @return SP_OK upon success, a negative error code otherwise. - * - * @since 0.1.0 - */ -enum sp_return sp_get_port_handle(const struct sp_port *port, void *result_ptr); - -/** - * @} - * - * @defgroup Configuration Configuration - * - * Setting and querying serial port parameters. - * @{ - */ - -/** - * Allocate a port configuration structure. - * - * The user should allocate a variable of type "struct sp_port_config *" and - * pass a pointer to this to receive the result. The variable will be updated - * to point to the new configuration structure. The structure is opaque and - * must be accessed via the functions provided. - * - * All parameters in the structure will be initialised to special values which - * are ignored by sp_set_config(). - * - * The structure should be freed after use by calling sp_free_config(). - * - * @param[out] config_ptr If any error is returned, the variable pointed to by - * config_ptr will be set to NULL. Otherwise, it will - * be set to point to the allocated config structure. - * Must not be NULL. - * - * @return SP_OK upon success, a negative error code otherwise. - * - * @since 0.1.0 - */ -enum sp_return sp_new_config(struct sp_port_config **config_ptr); - -/** - * Free a port configuration structure. - * - * @param[in] config Pointer to a configuration structure. Must not be NULL. - * - * @since 0.1.0 - */ -void sp_free_config(struct sp_port_config *config); - -/** - * Get the current configuration of the specified serial port. - * - * The user should allocate a configuration structure using sp_new_config() - * and pass this as the config parameter. The configuration structure will - * be updated with the port configuration. - * - * Any parameters that are configured with settings not recognised or - * supported by libserialport, will be set to special values that are - * ignored by sp_set_config(). - * - * @param[in] port Pointer to a port structure. Must not be NULL. - * @param[out] config Pointer to a configuration structure that will hold - * the result. Upon errors the contents of the config - * struct will not be changed. Must not be NULL. - * - * @return SP_OK upon success, a negative error code otherwise. - * - * @since 0.1.0 - */ -enum sp_return sp_get_config(struct sp_port *port, struct sp_port_config *config); - -/** - * Set the configuration for the specified serial port. - * - * For each parameter in the configuration, there is a special value (usually - * -1, but see the documentation for each field). These values will be ignored - * and the corresponding setting left unchanged on the port. - * - * Upon errors, the configuration of the serial port is unknown since - * partial/incomplete config updates may have happened. - * - * @param[in] port Pointer to a port structure. Must not be NULL. - * @param[in] config Pointer to a configuration structure. Must not be NULL. - * - * @return SP_OK upon success, a negative error code otherwise. - * - * @since 0.1.0 - */ -enum sp_return sp_set_config(struct sp_port *port, const struct sp_port_config *config); - -/** - * Set the baud rate for the specified serial port. - * - * @param[in] port Pointer to a port structure. Must not be NULL. - * @param[in] baudrate Baud rate in bits per second. - * - * @return SP_OK upon success, a negative error code otherwise. - * - * @since 0.1.0 - */ -enum sp_return sp_set_baudrate(struct sp_port *port, int baudrate); - -/** - * Get the baud rate from a port configuration. - * - * The user should allocate a variable of type int and - * pass a pointer to this to receive the result. - * - * @param[in] config Pointer to a configuration structure. Must not be NULL. - * @param[out] baudrate_ptr Pointer to a variable to store the result. Must not be NULL. - * - * @return SP_OK upon success, a negative error code otherwise. - * - * @since 0.1.0 - */ -enum sp_return sp_get_config_baudrate(const struct sp_port_config *config, int *baudrate_ptr); - -/** - * Set the baud rate in a port configuration. - * - * @param[in] config Pointer to a configuration structure. Must not be NULL. - * @param[in] baudrate Baud rate in bits per second, or -1 to retain the current setting. - * - * @return SP_OK upon success, a negative error code otherwise. - * - * @since 0.1.0 - */ -enum sp_return sp_set_config_baudrate(struct sp_port_config *config, int baudrate); - -/** - * Set the data bits for the specified serial port. - * - * @param[in] port Pointer to a port structure. Must not be NULL. - * @param[in] bits Number of data bits. - * - * @return SP_OK upon success, a negative error code otherwise. - * - * @since 0.1.0 - */ -enum sp_return sp_set_bits(struct sp_port *port, int bits); - -/** - * Get the data bits from a port configuration. - * - * The user should allocate a variable of type int and - * pass a pointer to this to receive the result. - * - * @param[in] config Pointer to a configuration structure. Must not be NULL. - * @param[out] bits_ptr Pointer to a variable to store the result. Must not be NULL. - * - * @return SP_OK upon success, a negative error code otherwise. - * - * @since 0.1.0 - */ -enum sp_return sp_get_config_bits(const struct sp_port_config *config, int *bits_ptr); - -/** - * Set the data bits in a port configuration. - * - * @param[in] config Pointer to a configuration structure. Must not be NULL. - * @param[in] bits Number of data bits, or -1 to retain the current setting. - * - * @return SP_OK upon success, a negative error code otherwise. - * - * @since 0.1.0 - */ -enum sp_return sp_set_config_bits(struct sp_port_config *config, int bits); - -/** - * Set the parity setting for the specified serial port. - * - * @param[in] port Pointer to a port structure. Must not be NULL. - * @param[in] parity Parity setting. - * - * @return SP_OK upon success, a negative error code otherwise. - * - * @since 0.1.0 - */ -enum sp_return sp_set_parity(struct sp_port *port, enum sp_parity parity); - -/** - * Get the parity setting from a port configuration. - * - * The user should allocate a variable of type enum sp_parity and - * pass a pointer to this to receive the result. - * - * @param[in] config Pointer to a configuration structure. Must not be NULL. - * @param[out] parity_ptr Pointer to a variable to store the result. Must not be NULL. - * - * @return SP_OK upon success, a negative error code otherwise. - * - * @since 0.1.0 - */ -enum sp_return sp_get_config_parity(const struct sp_port_config *config, enum sp_parity *parity_ptr); - -/** - * Set the parity setting in a port configuration. - * - * @param[in] config Pointer to a configuration structure. Must not be NULL. - * @param[in] parity Parity setting, or -1 to retain the current setting. - * - * @return SP_OK upon success, a negative error code otherwise. - * - * @since 0.1.0 - */ -enum sp_return sp_set_config_parity(struct sp_port_config *config, enum sp_parity parity); - -/** - * Set the stop bits for the specified serial port. - * - * @param[in] port Pointer to a port structure. Must not be NULL. - * @param[in] stopbits Number of stop bits. - * - * @return SP_OK upon success, a negative error code otherwise. - * - * @since 0.1.0 - */ -enum sp_return sp_set_stopbits(struct sp_port *port, int stopbits); - -/** - * Get the stop bits from a port configuration. - * - * The user should allocate a variable of type int and - * pass a pointer to this to receive the result. - * - * @param[in] config Pointer to a configuration structure. Must not be NULL. - * @param[out] stopbits_ptr Pointer to a variable to store the result. Must not be NULL. - * - * @return SP_OK upon success, a negative error code otherwise. - * - * @since 0.1.0 - */ -enum sp_return sp_get_config_stopbits(const struct sp_port_config *config, int *stopbits_ptr); - -/** - * Set the stop bits in a port configuration. - * - * @param[in] config Pointer to a configuration structure. Must not be NULL. - * @param[in] stopbits Number of stop bits, or -1 to retain the current setting. - * - * @return SP_OK upon success, a negative error code otherwise. - * - * @since 0.1.0 - */ -enum sp_return sp_set_config_stopbits(struct sp_port_config *config, int stopbits); - -/** - * Set the RTS pin behaviour for the specified serial port. - * - * @param[in] port Pointer to a port structure. Must not be NULL. - * @param[in] rts RTS pin mode. - * - * @return SP_OK upon success, a negative error code otherwise. - * - * @since 0.1.0 - */ -enum sp_return sp_set_rts(struct sp_port *port, enum sp_rts rts); - -/** - * Get the RTS pin behaviour from a port configuration. - * - * The user should allocate a variable of type enum sp_rts and - * pass a pointer to this to receive the result. - * - * @param[in] config Pointer to a configuration structure. Must not be NULL. - * @param[out] rts_ptr Pointer to a variable to store the result. Must not be NULL. - * - * @return SP_OK upon success, a negative error code otherwise. - * - * @since 0.1.0 - */ -enum sp_return sp_get_config_rts(const struct sp_port_config *config, enum sp_rts *rts_ptr); - -/** - * Set the RTS pin behaviour in a port configuration. - * - * @param[in] config Pointer to a configuration structure. Must not be NULL. - * @param[in] rts RTS pin mode, or -1 to retain the current setting. - * - * @return SP_OK upon success, a negative error code otherwise. - * - * @since 0.1.0 - */ -enum sp_return sp_set_config_rts(struct sp_port_config *config, enum sp_rts rts); - -/** - * Set the CTS pin behaviour for the specified serial port. - * - * @param[in] port Pointer to a port structure. Must not be NULL. - * @param[in] cts CTS pin mode. - * - * @return SP_OK upon success, a negative error code otherwise. - * - * @since 0.1.0 - */ -enum sp_return sp_set_cts(struct sp_port *port, enum sp_cts cts); - -/** - * Get the CTS pin behaviour from a port configuration. - * - * The user should allocate a variable of type enum sp_cts and - * pass a pointer to this to receive the result. - * - * @param[in] config Pointer to a configuration structure. Must not be NULL. - * @param[out] cts_ptr Pointer to a variable to store the result. Must not be NULL. - * - * @return SP_OK upon success, a negative error code otherwise. - * - * @since 0.1.0 - */ -enum sp_return sp_get_config_cts(const struct sp_port_config *config, enum sp_cts *cts_ptr); - -/** - * Set the CTS pin behaviour in a port configuration. - * - * @param[in] config Pointer to a configuration structure. Must not be NULL. - * @param[in] cts CTS pin mode, or -1 to retain the current setting. - * - * @return SP_OK upon success, a negative error code otherwise. - * - * @since 0.1.0 - */ -enum sp_return sp_set_config_cts(struct sp_port_config *config, enum sp_cts cts); - -/** - * Set the DTR pin behaviour for the specified serial port. - * - * @param[in] port Pointer to a port structure. Must not be NULL. - * @param[in] dtr DTR pin mode. - * - * @return SP_OK upon success, a negative error code otherwise. - * - * @since 0.1.0 - */ -enum sp_return sp_set_dtr(struct sp_port *port, enum sp_dtr dtr); - -/** - * Get the DTR pin behaviour from a port configuration. - * - * The user should allocate a variable of type enum sp_dtr and - * pass a pointer to this to receive the result. - * - * @param[in] config Pointer to a configuration structure. Must not be NULL. - * @param[out] dtr_ptr Pointer to a variable to store the result. Must not be NULL. - * - * @return SP_OK upon success, a negative error code otherwise. - * - * @since 0.1.0 - */ -enum sp_return sp_get_config_dtr(const struct sp_port_config *config, enum sp_dtr *dtr_ptr); - -/** - * Set the DTR pin behaviour in a port configuration. - * - * @param[in] config Pointer to a configuration structure. Must not be NULL. - * @param[in] dtr DTR pin mode, or -1 to retain the current setting. - * - * @return SP_OK upon success, a negative error code otherwise. - * - * @since 0.1.0 - */ -enum sp_return sp_set_config_dtr(struct sp_port_config *config, enum sp_dtr dtr); - -/** - * Set the DSR pin behaviour for the specified serial port. - * - * @param[in] port Pointer to a port structure. Must not be NULL. - * @param[in] dsr DSR pin mode. - * - * @return SP_OK upon success, a negative error code otherwise. - * - * @since 0.1.0 - */ -enum sp_return sp_set_dsr(struct sp_port *port, enum sp_dsr dsr); - -/** - * Get the DSR pin behaviour from a port configuration. - * - * The user should allocate a variable of type enum sp_dsr and - * pass a pointer to this to receive the result. - * - * @param[in] config Pointer to a configuration structure. Must not be NULL. - * @param[out] dsr_ptr Pointer to a variable to store the result. Must not be NULL. - * - * @return SP_OK upon success, a negative error code otherwise. - * - * @since 0.1.0 - */ -enum sp_return sp_get_config_dsr(const struct sp_port_config *config, enum sp_dsr *dsr_ptr); - -/** - * Set the DSR pin behaviour in a port configuration. - * - * @param[in] config Pointer to a configuration structure. Must not be NULL. - * @param[in] dsr DSR pin mode, or -1 to retain the current setting. - * - * @return SP_OK upon success, a negative error code otherwise. - * - * @since 0.1.0 - */ -enum sp_return sp_set_config_dsr(struct sp_port_config *config, enum sp_dsr dsr); - -/** - * Set the XON/XOFF configuration for the specified serial port. - * - * @param[in] port Pointer to a port structure. Must not be NULL. - * @param[in] xon_xoff XON/XOFF mode. - * - * @return SP_OK upon success, a negative error code otherwise. - * - * @since 0.1.0 - */ -enum sp_return sp_set_xon_xoff(struct sp_port *port, enum sp_xonxoff xon_xoff); - -/** - * Get the XON/XOFF configuration from a port configuration. - * - * The user should allocate a variable of type enum sp_xonxoff and - * pass a pointer to this to receive the result. - * - * @param[in] config Pointer to a configuration structure. Must not be NULL. - * @param[out] xon_xoff_ptr Pointer to a variable to store the result. Must not be NULL. - * - * @return SP_OK upon success, a negative error code otherwise. - * - * @since 0.1.0 - */ -enum sp_return sp_get_config_xon_xoff(const struct sp_port_config *config, enum sp_xonxoff *xon_xoff_ptr); - -/** - * Set the XON/XOFF configuration in a port configuration. - * - * @param[in] config Pointer to a configuration structure. Must not be NULL. - * @param[in] xon_xoff XON/XOFF mode, or -1 to retain the current setting. - * - * @return SP_OK upon success, a negative error code otherwise. - * - * @since 0.1.0 - */ -enum sp_return sp_set_config_xon_xoff(struct sp_port_config *config, enum sp_xonxoff xon_xoff); - -/** - * Set the flow control type in a port configuration. - * - * This function is a wrapper that sets the RTS, CTS, DTR, DSR and - * XON/XOFF settings as necessary for the specified flow control - * type. For more fine-grained control of these settings, use their - * individual configuration functions. - * - * @param[in] config Pointer to a configuration structure. Must not be NULL. - * @param[in] flowcontrol Flow control setting to use. - * - * @return SP_OK upon success, a negative error code otherwise. - * - * @since 0.1.0 - */ -enum sp_return sp_set_config_flowcontrol(struct sp_port_config *config, enum sp_flowcontrol flowcontrol); - -/** - * Set the flow control type for the specified serial port. - * - * This function is a wrapper that sets the RTS, CTS, DTR, DSR and - * XON/XOFF settings as necessary for the specified flow control - * type. For more fine-grained control of these settings, use their - * individual configuration functions. - * - * @param[in] port Pointer to a port structure. Must not be NULL. - * @param[in] flowcontrol Flow control setting to use. - * - * @return SP_OK upon success, a negative error code otherwise. - * - * @since 0.1.0 - */ -enum sp_return sp_set_flowcontrol(struct sp_port *port, enum sp_flowcontrol flowcontrol); - -/** - * @} - * - * @defgroup Data Data handling - * - * Reading, writing, and flushing data. - * - * @{ - */ - -/** - * Read bytes from the specified serial port, blocking until complete. - * - * @warning If your program runs on Unix, defines its own signal handlers, and - * needs to abort blocking reads when these are called, then you - * should not use this function. It repeats system calls that return - * with EINTR. To be able to abort a read from a signal handler, you - * should implement your own blocking read using sp_nonblocking_read() - * together with a blocking method that makes sense for your program. - * E.g. you can obtain the file descriptor for an open port using - * sp_get_port_handle() and use this to call select() or pselect(), - * with appropriate arrangements to return if a signal is received. - * - * @param[in] port Pointer to a port structure. Must not be NULL. - * @param[out] buf Buffer in which to store the bytes read. Must not be NULL. - * @param[in] count Requested number of bytes to read. - * @param[in] timeout_ms Timeout in milliseconds, or zero to wait indefinitely. - * - * @return The number of bytes read on success, or a negative error code. If - * the number of bytes returned is less than that requested, the - * timeout was reached before the requested number of bytes was - * available. If timeout is zero, the function will always return - * either the requested number of bytes or a negative error code. - * - * @since 0.1.0 - */ -enum sp_return sp_blocking_read(struct sp_port *port, void *buf, size_t count, unsigned int timeout_ms); - -/** - * Read bytes from the specified serial port, returning as soon as any data is - * available. - * - * @warning If your program runs on Unix, defines its own signal handlers, and - * needs to abort blocking reads when these are called, then you - * should not use this function. It repeats system calls that return - * with EINTR. To be able to abort a read from a signal handler, you - * should implement your own blocking read using sp_nonblocking_read() - * together with a blocking method that makes sense for your program. - * E.g. you can obtain the file descriptor for an open port using - * sp_get_port_handle() and use this to call select() or pselect(), - * with appropriate arrangements to return if a signal is received. - * - * @param[in] port Pointer to a port structure. Must not be NULL. - * @param[out] buf Buffer in which to store the bytes read. Must not be NULL. - * @param[in] count Maximum number of bytes to read. Must not be zero. - * @param[in] timeout_ms Timeout in milliseconds, or zero to wait indefinitely. - * - * @return The number of bytes read on success, or a negative error code. If - * the result is zero, the timeout was reached before any bytes were - * available. If timeout_ms is zero, the function will always return - * either at least one byte, or a negative error code. - * - * @since 0.1.1 - */ -enum sp_return sp_blocking_read_next(struct sp_port *port, void *buf, size_t count, unsigned int timeout_ms); - -/** - * Read bytes from the specified serial port, without blocking. - * - * @param[in] port Pointer to a port structure. Must not be NULL. - * @param[out] buf Buffer in which to store the bytes read. Must not be NULL. - * @param[in] count Maximum number of bytes to read. - * - * @return The number of bytes read on success, or a negative error code. The - * number of bytes returned may be any number from zero to the maximum - * that was requested. - * - * @since 0.1.0 - */ -enum sp_return sp_nonblocking_read(struct sp_port *port, void *buf, size_t count); - -/** - * Write bytes to the specified serial port, blocking until complete. - * - * Note that this function only ensures that the accepted bytes have been - * written to the OS; they may be held in driver or hardware buffers and not - * yet physically transmitted. To check whether all written bytes have actually - * been transmitted, use the sp_output_waiting() function. To wait until all - * written bytes have actually been transmitted, use the sp_drain() function. - * - * @warning If your program runs on Unix, defines its own signal handlers, and - * needs to abort blocking writes when these are called, then you - * should not use this function. It repeats system calls that return - * with EINTR. To be able to abort a write from a signal handler, you - * should implement your own blocking write using sp_nonblocking_write() - * together with a blocking method that makes sense for your program. - * E.g. you can obtain the file descriptor for an open port using - * sp_get_port_handle() and use this to call select() or pselect(), - * with appropriate arrangements to return if a signal is received. - * - * @param[in] port Pointer to a port structure. Must not be NULL. - * @param[in] buf Buffer containing the bytes to write. Must not be NULL. - * @param[in] count Requested number of bytes to write. - * @param[in] timeout_ms Timeout in milliseconds, or zero to wait indefinitely. - * - * @return The number of bytes written on success, or a negative error code. - * If the number of bytes returned is less than that requested, the - * timeout was reached before the requested number of bytes was - * written. If timeout is zero, the function will always return - * either the requested number of bytes or a negative error code. In - * the event of an error there is no way to determine how many bytes - * were sent before the error occurred. - * - * @since 0.1.0 - */ -enum sp_return sp_blocking_write(struct sp_port *port, const void *buf, size_t count, unsigned int timeout_ms); - -/** - * Write bytes to the specified serial port, without blocking. - * - * Note that this function only ensures that the accepted bytes have been - * written to the OS; they may be held in driver or hardware buffers and not - * yet physically transmitted. To check whether all written bytes have actually - * been transmitted, use the sp_output_waiting() function. To wait until all - * written bytes have actually been transmitted, use the sp_drain() function. - * - * @param[in] port Pointer to a port structure. Must not be NULL. - * @param[in] buf Buffer containing the bytes to write. Must not be NULL. - * @param[in] count Maximum number of bytes to write. - * - * @return The number of bytes written on success, or a negative error code. - * The number of bytes returned may be any number from zero to the - * maximum that was requested. - * - * @since 0.1.0 - */ -enum sp_return sp_nonblocking_write(struct sp_port *port, const void *buf, size_t count); - -/** - * Gets the number of bytes waiting in the input buffer. - * - * @param[in] port Pointer to a port structure. Must not be NULL. - * - * @return Number of bytes waiting on success, a negative error code otherwise. - * - * @since 0.1.0 - */ -enum sp_return sp_input_waiting(struct sp_port *port); - -/** - * Gets the number of bytes waiting in the output buffer. - * - * @param[in] port Pointer to a port structure. Must not be NULL. - * - * @return Number of bytes waiting on success, a negative error code otherwise. - * - * @since 0.1.0 - */ -enum sp_return sp_output_waiting(struct sp_port *port); - -/** - * Flush serial port buffers. Data in the selected buffer(s) is discarded. - * - * @param[in] port Pointer to a port structure. Must not be NULL. - * @param[in] buffers Which buffer(s) to flush. - * - * @return SP_OK upon success, a negative error code otherwise. - * - * @since 0.1.0 - */ -enum sp_return sp_flush(struct sp_port *port, enum sp_buffer buffers); - -/** - * Wait for buffered data to be transmitted. - * - * @warning If your program runs on Unix, defines its own signal handlers, and - * needs to abort draining the output buffer when when these are - * called, then you should not use this function. It repeats system - * calls that return with EINTR. To be able to abort a drain from a - * signal handler, you would need to implement your own blocking - * drain by polling the result of sp_output_waiting(). - * - * @param[in] port Pointer to a port structure. Must not be NULL. - * - * @return SP_OK upon success, a negative error code otherwise. - * - * @since 0.1.0 - */ -enum sp_return sp_drain(struct sp_port *port); - -/** - * @} - * - * @defgroup Waiting Waiting - * - * Waiting for events and timeout handling. - * - * @{ - */ - -/** - * Allocate storage for a set of events. - * - * The user should allocate a variable of type struct sp_event_set *, - * then pass a pointer to this variable to receive the result. - * - * The result should be freed after use by calling sp_free_event_set(). - * - * @param[out] result_ptr If any error is returned, the variable pointed to by - * result_ptr will be set to NULL. Otherwise, it will - * be set to point to the event set. Must not be NULL. - * - * @return SP_OK upon success, a negative error code otherwise. - * - * @since 0.1.0 - */ -enum sp_return sp_new_event_set(struct sp_event_set **result_ptr); - -/** - * Add events to a struct sp_event_set for a given port. - * - * The port must first be opened by calling sp_open() using the same port - * structure. - * - * After the port is closed or the port structure freed, the results may - * no longer be valid. - * - * @param[in,out] event_set Event set to update. Must not be NULL. - * @param[in] port Pointer to a port structure. Must not be NULL. - * @param[in] mask Bitmask of events to be waited for. - * - * @return SP_OK upon success, a negative error code otherwise. - * - * @since 0.1.0 - */ -enum sp_return sp_add_port_events(struct sp_event_set *event_set, - const struct sp_port *port, enum sp_event mask); - -/** - * Wait for any of a set of events to occur. - * - * @param[in] event_set Event set to wait on. Must not be NULL. - * @param[in] timeout_ms Timeout in milliseconds, or zero to wait indefinitely. - * - * @return SP_OK upon success, a negative error code otherwise. - * - * @since 0.1.0 - */ -enum sp_return sp_wait(struct sp_event_set *event_set, unsigned int timeout_ms); - -/** - * Free a structure allocated by sp_new_event_set(). - * - * @param[in] event_set Event set to free. Must not be NULL. - * - * @since 0.1.0 - */ -void sp_free_event_set(struct sp_event_set *event_set); - -/** - * @} - * - * @defgroup Signals Signals - * - * Port signalling operations. - * - * @{ - */ - -/** - * Gets the status of the control signals for the specified port. - * - * The user should allocate a variable of type "enum sp_signal" and pass a - * pointer to this variable to receive the result. The result is a bitmask - * in which individual signals can be checked by bitwise OR with values of - * the sp_signal enum. - * - * @param[in] port Pointer to a port structure. Must not be NULL. - * @param[out] signal_mask Pointer to a variable to receive the result. - * Must not be NULL. - * - * @return SP_OK upon success, a negative error code otherwise. - * - * @since 0.1.0 - */ -enum sp_return sp_get_signals(struct sp_port *port, enum sp_signal *signal_mask); - -/** - * Put the port transmit line into the break state. - * - * @param[in] port Pointer to a port structure. Must not be NULL. - * - * @return SP_OK upon success, a negative error code otherwise. - * - * @since 0.1.0 - */ -enum sp_return sp_start_break(struct sp_port *port); - -/** - * Take the port transmit line out of the break state. - * - * @param[in] port Pointer to a port structure. Must not be NULL. - * - * @return SP_OK upon success, a negative error code otherwise. - * - * @since 0.1.0 - */ -enum sp_return sp_end_break(struct sp_port *port); - -/** - * @} - * - * @defgroup Errors Errors - * - * Obtaining error information. - * - * @{ - */ - -/** - * Get the error code for a failed operation. - * - * In order to obtain the correct result, this function should be called - * straight after the failure, before executing any other system operations. - * The result is thread-specific, and only valid when called immediately - * after a previous call returning SP_ERR_FAIL. - * - * @return The system's numeric code for the error that caused the last - * operation to fail. - * - * @since 0.1.0 - */ -int sp_last_error_code(void); - -/** - * Get the error message for a failed operation. - * - * In order to obtain the correct result, this function should be called - * straight after the failure, before executing other system operations. - * The result is thread-specific, and only valid when called immediately - * after a previous call returning SP_ERR_FAIL. - * - * @return The system's message for the error that caused the last - * operation to fail. This string may be allocated by the function, - * and should be freed after use by calling sp_free_error_message(). - * - * @since 0.1.0 - */ -char *sp_last_error_message(void); - -/** - * Free an error message returned by sp_last_error_message(). - * - * @param[in] message The error message string to free. Must not be NULL. - * - * @since 0.1.0 - */ -void sp_free_error_message(char *message); - -/** - * Set the handler function for library debugging messages. - * - * Debugging messages are generated by the library during each operation, - * to help in diagnosing problems. The handler will be called for each - * message. The handler can be set to NULL to ignore all debug messages. - * - * The handler function should accept a format string and variable length - * argument list, in the same manner as e.g. printf(). - * - * The default handler is sp_default_debug_handler(). - * - * @param[in] handler The handler function to use. Can be NULL (in that case - * all debug messages will be ignored). - * - * @since 0.1.0 - */ -void sp_set_debug_handler(void (*handler)(const char *format, ...)); - -/** - * Default handler function for library debugging messages. - * - * This function prints debug messages to the standard error stream if the - * environment variable LIBSERIALPORT_DEBUG is set. Otherwise, they are - * ignored. - * - * @param[in] format The format string to use. Must not be NULL. - * @param[in] ... The variable length argument list to use. - * - * @since 0.1.0 - */ -void sp_default_debug_handler(const char *format, ...); - -/** @} */ - -/** - * @defgroup Versions Versions - * - * Version number querying functions, definitions, and macros. - * - * This set of API calls returns two different version numbers related - * to libserialport. The "package version" is the release version number of the - * libserialport tarball in the usual "major.minor.micro" format, e.g. "0.1.0". - * - * The "library version" is independent of that; it is the libtool version - * number in the "current:revision:age" format, e.g. "2:0:0". - * See http://www.gnu.org/software/libtool/manual/libtool.html#Libtool-versioning for details. - * - * Both version numbers (and/or individual components of them) can be - * retrieved via the API calls at runtime, and/or they can be checked at - * compile/preprocessor time using the respective macros. - * - * @{ - */ - -/* - * Package version macros (can be used for conditional compilation). - */ - -/** The libserialport package 'major' version number. */ -#define SP_PACKAGE_VERSION_MAJOR @SP_PACKAGE_VERSION_MAJOR@ - -/** The libserialport package 'minor' version number. */ -#define SP_PACKAGE_VERSION_MINOR @SP_PACKAGE_VERSION_MINOR@ - -/** The libserialport package 'micro' version number. */ -#define SP_PACKAGE_VERSION_MICRO @SP_PACKAGE_VERSION_MICRO@ - -/** The libserialport package version ("major.minor.micro") as string. */ -#define SP_PACKAGE_VERSION_STRING "@SP_PACKAGE_VERSION@" - -/* - * Library/libtool version macros (can be used for conditional compilation). - */ - -/** The libserialport libtool 'current' version number. */ -#define SP_LIB_VERSION_CURRENT @SP_LIB_VERSION_CURRENT@ - -/** The libserialport libtool 'revision' version number. */ -#define SP_LIB_VERSION_REVISION @SP_LIB_VERSION_REVISION@ - -/** The libserialport libtool 'age' version number. */ -#define SP_LIB_VERSION_AGE @SP_LIB_VERSION_AGE@ - -/** The libserialport libtool version ("current:revision:age") as string. */ -#define SP_LIB_VERSION_STRING "@SP_LIB_VERSION@" - -/** - * Get the major libserialport package version number. - * - * @return The major package version number. - * - * @since 0.1.0 - */ -int sp_get_major_package_version(void); - -/** - * Get the minor libserialport package version number. - * - * @return The minor package version number. - * - * @since 0.1.0 - */ -int sp_get_minor_package_version(void); - -/** - * Get the micro libserialport package version number. - * - * @return The micro package version number. - * - * @since 0.1.0 - */ -int sp_get_micro_package_version(void); - -/** - * Get the libserialport package version number as a string. - * - * @return The package version number string. The returned string is - * static and thus should NOT be free'd by the caller. - * - * @since 0.1.0 - */ -const char *sp_get_package_version_string(void); - -/** - * Get the "current" part of the libserialport library version number. - * - * @return The "current" library version number. - * - * @since 0.1.0 - */ -int sp_get_current_lib_version(void); - -/** - * Get the "revision" part of the libserialport library version number. - * - * @return The "revision" library version number. - * - * @since 0.1.0 - */ -int sp_get_revision_lib_version(void); - -/** - * Get the "age" part of the libserialport library version number. - * - * @return The "age" library version number. - * - * @since 0.1.0 - */ -int sp_get_age_lib_version(void); - -/** - * Get the libserialport library version number as a string. - * - * @return The library version number string. The returned string is - * static and thus should NOT be free'd by the caller. - * - * @since 0.1.0 - */ -const char *sp_get_lib_version_string(void); - -/** @} */ - -#ifdef __cplusplus -} -#endif - -#endif