mirror of
git://sigrok.org/libserialport
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107 lines
2.8 KiB
C
107 lines
2.8 KiB
C
/*
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* This file is part of the libserialport project.
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*
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* Copyright (C) 2013 Martin Ling <martin-libserialport@earth.li>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as
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* published by the Free Software Foundation, either version 3 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef LIBSERIALPORT_H
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#define LIBSERIALPORT_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <stddef.h>
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#ifdef _WIN32
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#include <windows.h>
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#endif
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/* A serial port. */
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struct sp_port {
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/* Name used to open the port */
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char *name;
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/* OS-specific port handle */
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#ifdef _WIN32
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HANDLE hdl;
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#else
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int fd;
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#endif
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};
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/* Return values. */
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enum {
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/* Operation completed successfully. */
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SP_OK = 0,
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/* Invalid arguments were passed to the function. */
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SP_ERR_ARG = -1,
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/* A system error occured while executing the operation. */
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SP_ERR_FAIL = -2,
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/* A memory allocation failed while executing the operation. */
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SP_ERR_MEM = -3,
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};
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/* Port access modes. */
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enum {
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/* Open port for read/write access. */
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SP_MODE_RDWR = 1,
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/* Open port for read access only. */
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SP_MODE_RDONLY = 2,
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/* Open port in non-blocking mode. */
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SP_MODE_NONBLOCK = 4,
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};
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/* Parity settings. */
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enum {
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/* No parity. */
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SP_PARITY_NONE = 0,
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/* Even parity. */
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SP_PARITY_EVEN = 1,
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/* Odd parity. */
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SP_PARITY_ODD = 2,
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};
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/* Flow control settings. */
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enum {
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/* No flow control. */
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SP_FLOW_NONE = 0,
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/* Hardware (RTS/CTS) flow control. */
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SP_FLOW_HARDWARE = 1,
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/* Software (XON/XOFF) flow control. */
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SP_FLOW_SOFTWARE = 2,
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};
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int sp_get_port_by_name(const char *portname, struct sp_port **port_ptr);
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void sp_free_port(struct sp_port *port);
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int sp_list_ports(struct sp_port ***list_ptr);
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int sp_copy_port(const struct sp_port *port, struct sp_port **copy_ptr);
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void sp_free_port_list(struct sp_port **ports);
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int sp_open(struct sp_port *port, int flags);
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int sp_close(struct sp_port *port);
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int sp_flush(struct sp_port *port);
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int sp_write(struct sp_port *port, const void *buf, size_t count);
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int sp_read(struct sp_port *port, void *buf, size_t count);
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int sp_set_params(struct sp_port *port, int baudrate, int bits, int parity,
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int stopbits, int flowcontrol, int rts, int dtr);
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int sp_last_error_code(void);
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char *sp_last_error_message(void);
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void sp_free_error_message(char *message);
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#ifdef __cplusplus
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}
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#endif
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#endif /* LIBSERIALPORT_H */
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