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e33dcf90 ML |
1 | /* |
2 | * This file is part of the libserialport project. | |
3 | * | |
4 | * Copyright (C) 2014 Martin Ling <martin-libserialport@earth.li> | |
5 | * Copyright (C) 2014 Aurelien Jacobs <aurel@gnuage.org> | |
6 | * | |
7 | * This program is free software: you can redistribute it and/or modify | |
8 | * it under the terms of the GNU Lesser General Public License as | |
9 | * published by the Free Software Foundation, either version 3 of the | |
10 | * License, or (at your option) any later version. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU Lesser General Public License | |
18 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
19 | */ | |
20 | ||
c51b846e ML |
21 | #ifdef __linux__ |
22 | #define _BSD_SOURCE // for timeradd, timersub, timercmp | |
c51b846e ML |
23 | #endif |
24 | ||
e33dcf90 ML |
25 | #include <string.h> |
26 | #include <sys/types.h> | |
27 | #include <sys/stat.h> | |
28 | #include <fcntl.h> | |
29 | #include <unistd.h> | |
30 | #include <stdlib.h> | |
31 | #include <errno.h> | |
32 | #include <stdio.h> | |
33 | #include <stdarg.h> | |
34 | #ifdef _WIN32 | |
35 | #include <windows.h> | |
36 | #include <tchar.h> | |
37 | #include <setupapi.h> | |
38 | #include <cfgmgr32.h> | |
78940e69 ML |
39 | #undef DEFINE_GUID |
40 | #define DEFINE_GUID(name,l,w1,w2,b1,b2,b3,b4,b5,b6,b7,b8) \ | |
41 | static const GUID name = { l,w1,w2,{ b1,b2,b3,b4,b5,b6,b7,b8 } } | |
e33dcf90 | 42 | #include <usbioctl.h> |
d179da05 | 43 | #include <usbiodef.h> |
e33dcf90 ML |
44 | #else |
45 | #include <limits.h> | |
46 | #include <termios.h> | |
47 | #include <sys/ioctl.h> | |
48 | #include <sys/time.h> | |
49 | #include <limits.h> | |
50 | #include <poll.h> | |
51 | #endif | |
52 | #ifdef __APPLE__ | |
53 | #include <CoreFoundation/CoreFoundation.h> | |
54 | #include <IOKit/IOKitLib.h> | |
55 | #include <IOKit/serial/IOSerialKeys.h> | |
56 | #include <IOKit/serial/ioss.h> | |
57 | #include <sys/syslimits.h> | |
58 | #endif | |
59 | #ifdef __linux__ | |
60 | #include <dirent.h> | |
61 | #ifndef __ANDROID__ | |
62 | #include "linux/serial.h" | |
63 | #endif | |
64 | #include "linux_termios.h" | |
65 | ||
66 | /* TCGETX/TCSETX is not available everywhere. */ | |
67 | #if defined(TCGETX) && defined(TCSETX) && defined(HAVE_TERMIOX) | |
68 | #define USE_TERMIOX | |
69 | #endif | |
70 | #endif | |
71 | ||
72 | /* TIOCINQ/TIOCOUTQ is not available everywhere. */ | |
73 | #if !defined(TIOCINQ) && defined(FIONREAD) | |
74 | #define TIOCINQ FIONREAD | |
75 | #endif | |
76 | #if !defined(TIOCOUTQ) && defined(FIONWRITE) | |
77 | #define TIOCOUTQ FIONWRITE | |
78 | #endif | |
79 | ||
80 | /* Non-standard baudrates are not available everywhere. */ | |
81 | #if defined(HAVE_TERMIOS_SPEED) || defined(HAVE_TERMIOS2_SPEED) | |
82 | #define USE_TERMIOS_SPEED | |
83 | #endif | |
84 | ||
85 | struct sp_port { | |
86 | char *name; | |
87 | char *description; | |
88 | enum sp_transport transport; | |
89 | int usb_bus; | |
90 | int usb_address; | |
91 | int usb_vid; | |
92 | int usb_pid; | |
93 | char *usb_manufacturer; | |
94 | char *usb_product; | |
95 | char *usb_serial; | |
96 | char *bluetooth_address; | |
97 | #ifdef _WIN32 | |
98 | char *usb_path; | |
99 | HANDLE hdl; | |
100 | COMMTIMEOUTS timeouts; | |
101 | OVERLAPPED write_ovl; | |
102 | OVERLAPPED read_ovl; | |
103 | OVERLAPPED wait_ovl; | |
104 | DWORD events; | |
105 | BYTE pending_byte; | |
106 | BOOL writing; | |
107 | #else | |
108 | int fd; | |
109 | #endif | |
110 | }; | |
111 | ||
112 | struct sp_port_config { | |
113 | int baudrate; | |
114 | int bits; | |
115 | enum sp_parity parity; | |
116 | int stopbits; | |
117 | enum sp_rts rts; | |
118 | enum sp_cts cts; | |
119 | enum sp_dtr dtr; | |
120 | enum sp_dsr dsr; | |
121 | enum sp_xonxoff xon_xoff; | |
122 | }; | |
123 | ||
124 | struct port_data { | |
125 | #ifdef _WIN32 | |
126 | DCB dcb; | |
127 | #else | |
128 | struct termios term; | |
129 | int controlbits; | |
130 | int termiox_supported; | |
131 | int rts_flow; | |
132 | int cts_flow; | |
133 | int dtr_flow; | |
134 | int dsr_flow; | |
135 | #endif | |
136 | }; | |
137 | ||
138 | #ifdef _WIN32 | |
139 | typedef HANDLE event_handle; | |
140 | #else | |
141 | typedef int event_handle; | |
142 | #endif | |
143 | ||
144 | /* Standard baud rates. */ | |
145 | #ifdef _WIN32 | |
146 | #define BAUD_TYPE DWORD | |
147 | #define BAUD(n) {CBR_##n, n} | |
148 | #else | |
149 | #define BAUD_TYPE speed_t | |
150 | #define BAUD(n) {B##n, n} | |
151 | #endif | |
152 | ||
153 | struct std_baudrate { | |
154 | BAUD_TYPE index; | |
155 | int value; | |
156 | }; | |
157 | ||
158 | extern const struct std_baudrate std_baudrates[]; | |
159 | ||
160 | #define ARRAY_SIZE(x) (sizeof(x) / sizeof(x[0])) | |
161 | #define NUM_STD_BAUDRATES ARRAY_SIZE(std_baudrates) | |
162 | ||
163 | extern void (*sp_debug_handler)(const char *format, ...); | |
164 | ||
165 | /* Debug output macros. */ | |
7890cef6 ML |
166 | #define DEBUG_FMT(fmt, ...) do { \ |
167 | if (sp_debug_handler) \ | |
168 | sp_debug_handler(fmt ".\n", __VA_ARGS__); \ | |
169 | } while (0) | |
170 | #define DEBUG(msg) DEBUG_FMT(msg, NULL) | |
171 | #define DEBUG_ERROR(err, msg) DEBUG_FMT("%s returning " #err ": " msg, __func__) | |
172 | #define DEBUG_FAIL(msg) do { \ | |
e33dcf90 | 173 | char *errmsg = sp_last_error_message(); \ |
7890cef6 | 174 | DEBUG_FMT("%s returning SP_ERR_FAIL: " msg ": %s", __func__, errmsg); \ |
e33dcf90 ML |
175 | sp_free_error_message(errmsg); \ |
176 | } while (0); | |
7890cef6 ML |
177 | #define RETURN() do { \ |
178 | DEBUG_FMT("%s returning", __func__); \ | |
179 | return; \ | |
180 | } while(0) | |
181 | #define RETURN_CODE(x) do { \ | |
182 | DEBUG_FMT("%s returning " #x, __func__); \ | |
183 | return x; \ | |
184 | } while (0) | |
e33dcf90 ML |
185 | #define RETURN_CODEVAL(x) do { \ |
186 | switch (x) { \ | |
187 | case SP_OK: RETURN_CODE(SP_OK); \ | |
188 | case SP_ERR_ARG: RETURN_CODE(SP_ERR_ARG); \ | |
189 | case SP_ERR_FAIL: RETURN_CODE(SP_ERR_FAIL); \ | |
190 | case SP_ERR_MEM: RETURN_CODE(SP_ERR_MEM); \ | |
191 | case SP_ERR_SUPP: RETURN_CODE(SP_ERR_SUPP); \ | |
192 | } \ | |
193 | } while (0) | |
194 | #define RETURN_OK() RETURN_CODE(SP_OK); | |
7890cef6 ML |
195 | #define RETURN_ERROR(err, msg) do { \ |
196 | DEBUG_ERROR(err, msg); \ | |
197 | return err; \ | |
198 | } while (0) | |
199 | #define RETURN_FAIL(msg) do { \ | |
200 | DEBUG_FAIL(msg); \ | |
201 | return SP_ERR_FAIL; \ | |
202 | } while (0) | |
9caa2e86 ML |
203 | #define RETURN_INT(x) do { \ |
204 | int _x = x; \ | |
7890cef6 | 205 | DEBUG_FMT("%s returning %d", __func__, _x); \ |
9caa2e86 ML |
206 | return _x; \ |
207 | } while (0) | |
208 | #define RETURN_STRING(x) do { \ | |
209 | char *_x = x; \ | |
7890cef6 | 210 | DEBUG_FMT("%s returning %s", __func__, _x); \ |
9caa2e86 ML |
211 | return _x; \ |
212 | } while (0) | |
213 | #define RETURN_POINTER(x) do { \ | |
214 | void *_x = x; \ | |
7890cef6 | 215 | DEBUG_FMT("%s returning %p", __func__, _x); \ |
e33dcf90 ML |
216 | return _x; \ |
217 | } while (0) | |
218 | #define SET_ERROR(val, err, msg) do { DEBUG_ERROR(err, msg); val = err; } while (0) | |
219 | #define SET_FAIL(val, msg) do { DEBUG_FAIL(msg); val = SP_ERR_FAIL; } while (0) | |
7890cef6 ML |
220 | #define TRACE(fmt, ...) DEBUG_FMT("%s(" fmt ") called", __func__, __VA_ARGS__) |
221 | #define TRACE_VOID() DEBUG_FMT("%s() called", __func__) | |
e33dcf90 ML |
222 | |
223 | #define TRY(x) do { int ret = x; if (ret != SP_OK) RETURN_CODEVAL(ret); } while (0) | |
224 | ||
970f279a | 225 | SP_PRIV struct sp_port **list_append(struct sp_port **list, const char *portname); |
48a4076f | 226 | |
e33dcf90 | 227 | /* OS-specific Helper functions. */ |
970f279a AJ |
228 | SP_PRIV enum sp_return get_port_details(struct sp_port *port); |
229 | SP_PRIV enum sp_return list_ports(struct sp_port ***list); |