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883a2e9e BV |
1 | /* |
2 | * This file is part of the sigrok project. | |
3 | * | |
4 | * Copyright (C) 2012 Bert Vermeulen <bert@biot.com> | |
5 | * | |
6 | * This program is free software: you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation, either version 3 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
18 | */ | |
19 | ||
20 | #include <glib.h> | |
21 | #include "libsigrok.h" | |
22 | #include "libsigrok-internal.h" | |
23 | #include "config.h" | |
4f958423 BV |
24 | #include "fluke-dmm.h" |
25 | #include <sys/types.h> | |
26 | #include <sys/stat.h> | |
27 | #include <fcntl.h> | |
28 | #include <string.h> | |
29 | #include <errno.h> | |
883a2e9e BV |
30 | |
31 | ||
e7edd64f BV |
32 | SR_PRIV struct sr_dev_driver flukedmm_driver_info; |
33 | static struct sr_dev_driver *di = &flukedmm_driver_info; | |
883a2e9e | 34 | |
4f958423 BV |
35 | static const struct flukedmm_profile supported_flukedmm[] = { |
36 | { FLUKE_187, "187" }, | |
37 | }; | |
38 | ||
883a2e9e BV |
39 | |
40 | /* Properly close and free all devices. */ | |
41 | static int clear_instances(void) | |
42 | { | |
43 | struct sr_dev_inst *sdi; | |
44 | struct drv_context *drvc; | |
45 | struct dev_context *devc; | |
46 | GSList *l; | |
47 | ||
4f958423 BV |
48 | if (!(drvc = di->priv)) |
49 | return SR_OK; | |
50 | ||
883a2e9e BV |
51 | drvc = di->priv; |
52 | for (l = drvc->instances; l; l = l->next) { | |
4f958423 | 53 | if (!(sdi = l->data)) |
883a2e9e | 54 | continue; |
4f958423 | 55 | if (!(devc = sdi->priv)) |
883a2e9e | 56 | continue; |
4f958423 | 57 | sr_serial_dev_inst_free(devc->serial); |
883a2e9e BV |
58 | sr_dev_inst_free(sdi); |
59 | } | |
883a2e9e BV |
60 | g_slist_free(drvc->instances); |
61 | drvc->instances = NULL; | |
62 | ||
63 | return SR_OK; | |
64 | } | |
65 | ||
66 | static int hw_init(void) | |
67 | { | |
68 | struct drv_context *drvc; | |
69 | ||
70 | if (!(drvc = g_try_malloc0(sizeof(struct drv_context)))) { | |
4f958423 | 71 | sr_err("fluke-dmm: driver context malloc failed."); |
883a2e9e BV |
72 | return SR_ERR; |
73 | } | |
74 | ||
883a2e9e BV |
75 | di->priv = drvc; |
76 | ||
77 | return SR_OK; | |
78 | } | |
79 | ||
4f958423 BV |
80 | static int serial_readline(int fd, char **buf, int *buflen, uint64_t timeout_ms) |
81 | { | |
82 | uint64_t start; | |
83 | int maxlen, len; | |
84 | ||
85 | timeout_ms *= 1000; | |
86 | start = g_get_monotonic_time(); | |
87 | ||
88 | maxlen = *buflen; | |
89 | *buflen = len = 0; | |
90 | while(1) { | |
91 | len = maxlen - *buflen - 1; | |
92 | if (len < 1) | |
93 | break; | |
fb480d57 | 94 | len = serial_read(fd, *buf + *buflen, 1); |
4f958423 BV |
95 | if (len > 0) { |
96 | *buflen += len; | |
97 | *(*buf + *buflen) = '\0'; | |
fb480d57 BV |
98 | if (*buflen > 0 && *(*buf + *buflen - 1) == '\n') { |
99 | /* Strip LF and terminate. */ | |
100 | *(*buf + --*buflen) = '\0'; | |
4f958423 | 101 | break; |
fb480d57 | 102 | } |
4f958423 BV |
103 | } |
104 | if (g_get_monotonic_time() - start > timeout_ms) | |
105 | /* Timeout */ | |
106 | break; | |
107 | g_usleep(2000); | |
108 | } | |
fb480d57 | 109 | sr_dbg("fluke-dmm: received %d: '%s'", *buflen, *buf); |
4f958423 BV |
110 | |
111 | return SR_OK; | |
112 | } | |
113 | ||
883a2e9e BV |
114 | static GSList *hw_scan(GSList *options) |
115 | { | |
4f958423 | 116 | struct sr_dev_inst *sdi; |
883a2e9e | 117 | struct drv_context *drvc; |
4f958423 BV |
118 | struct dev_context *devc; |
119 | struct sr_hwopt *opt; | |
120 | struct sr_probe *probe; | |
121 | GSList *l, *devices; | |
fb480d57 | 122 | int retry, len, fd, i, s; |
4f958423 | 123 | const char *conn, *serialcomm; |
fb480d57 | 124 | char buf[128], *b, **tokens; |
883a2e9e | 125 | |
883a2e9e BV |
126 | drvc = di->priv; |
127 | drvc->instances = NULL; | |
128 | ||
4f958423 BV |
129 | devices = NULL; |
130 | conn = serialcomm = NULL; | |
131 | for (l = options; l; l = l->next) { | |
132 | opt = l->data; | |
133 | switch (opt->hwopt) { | |
134 | case SR_HWOPT_CONN: | |
135 | conn = opt->value; | |
136 | break; | |
137 | case SR_HWOPT_SERIALCOMM: | |
138 | serialcomm = opt->value; | |
139 | break; | |
140 | } | |
141 | } | |
142 | if (!conn) { | |
143 | sr_dbg("fluke-dmm: no serial port provided"); | |
144 | return NULL; | |
145 | } | |
146 | if (!serialcomm) { | |
147 | sr_dbg("fluke-dmm: no serial communication parameters provided"); | |
148 | return NULL; | |
149 | } | |
150 | ||
151 | if ((fd = serial_open(conn, O_RDWR|O_NONBLOCK)) == -1) { | |
152 | sr_err("fluke-dmm: unable to open %s: %s", conn, strerror(errno)); | |
153 | return NULL; | |
154 | } | |
155 | ||
156 | if (serial_set_paramstr(fd, serialcomm) != SR_OK) { | |
157 | sr_err("fluke-dmm: unable to set serial parameters: %s", | |
158 | strerror(errno)); | |
159 | return NULL; | |
160 | } | |
161 | ||
fb480d57 BV |
162 | b = buf; |
163 | retry = 0; | |
164 | /* We'll try the discovery sequence three times in case the device | |
165 | * is not in an idle state when we send ID. */ | |
166 | while (!devices && retry < 3) { | |
167 | retry++; | |
168 | serial_flush(fd); | |
169 | if (serial_write(fd, "ID\r", 3) == -1) { | |
170 | sr_err("fluke-dmm: unable to send ID string: %s", | |
171 | strerror(errno)); | |
172 | continue; | |
173 | } | |
4f958423 | 174 | |
fb480d57 BV |
175 | /* Response is first a CMD_ACK byte (ASCII '0' for OK, |
176 | * or '1' to signify an error. */ | |
177 | len = 128; | |
178 | serial_readline(fd, &b, &len, 150); | |
179 | if (len != 1) | |
180 | continue; | |
181 | if (buf[0] != '0') { | |
182 | sr_dbg("fluke-dmm: got ID response %.2x", buf[0]); | |
183 | continue; | |
184 | } | |
4f958423 | 185 | |
fb480d57 BV |
186 | /* If CMD_ACK was OK, ID string follows. */ |
187 | len = 128; | |
188 | serial_readline(fd, &b, &len, 150); | |
189 | if (len < 10) | |
190 | continue; | |
191 | tokens = g_strsplit(buf, ",", 3); | |
192 | if (!strncmp("FLUKE", tokens[0], 5) | |
193 | && tokens[1] && tokens[2]) { | |
194 | for (i = 0; supported_flukedmm[i].model; i++) { | |
195 | if (strcmp(supported_flukedmm[i].modelname, tokens[0] + 6)) | |
196 | continue; | |
197 | /* Skip leading spaces in version number. */ | |
198 | for (s = 0; tokens[1][s] == ' '; s++); | |
199 | if (!(sdi = sr_dev_inst_new(0, SR_ST_INACTIVE, "Fluke", | |
200 | tokens[0] + 6, tokens[1] + s))) | |
201 | return NULL; | |
202 | if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) { | |
203 | sr_dbg("fluke-dmm: failed to malloc devc"); | |
204 | return NULL; | |
205 | } | |
206 | devc->profile = &supported_flukedmm[i]; | |
207 | devc->serial = sr_serial_dev_inst_new(conn, -1); | |
208 | sdi->priv = devc; | |
209 | sdi->driver = di; | |
210 | if (!(probe = sr_probe_new(0, SR_PROBE_ANALOG, TRUE, "P1"))) | |
211 | return NULL; | |
212 | sdi->probes = g_slist_append(sdi->probes, probe); | |
213 | drvc->instances = g_slist_append(drvc->instances, sdi); | |
214 | devices = g_slist_append(devices, sdi); | |
215 | break; | |
4f958423 | 216 | } |
4f958423 | 217 | } |
fb480d57 | 218 | g_strfreev(tokens); |
4f958423 | 219 | } |
4f958423 BV |
220 | |
221 | serial_close(fd); | |
883a2e9e BV |
222 | |
223 | return devices; | |
224 | } | |
225 | ||
226 | static GSList *hw_dev_list(void) | |
227 | { | |
228 | struct drv_context *drvc; | |
229 | ||
230 | drvc = di->priv; | |
231 | ||
232 | return drvc->instances; | |
233 | } | |
234 | ||
235 | static int hw_dev_open(struct sr_dev_inst *sdi) | |
236 | { | |
237 | ||
238 | /* TODO */ | |
239 | ||
240 | return SR_OK; | |
241 | } | |
242 | ||
243 | static int hw_dev_close(struct sr_dev_inst *sdi) | |
244 | { | |
245 | ||
246 | /* TODO */ | |
247 | ||
248 | return SR_OK; | |
249 | } | |
250 | ||
251 | static int hw_cleanup(void) | |
252 | { | |
253 | ||
254 | clear_instances(); | |
255 | ||
256 | /* TODO */ | |
257 | ||
258 | return SR_OK; | |
259 | } | |
260 | ||
261 | static int hw_info_get(int info_id, const void **data, | |
262 | const struct sr_dev_inst *sdi) | |
263 | { | |
264 | ||
265 | ||
266 | switch (info_id) { | |
267 | /* TODO */ | |
268 | default: | |
269 | return SR_ERR_ARG; | |
270 | } | |
271 | ||
272 | return SR_OK; | |
273 | } | |
274 | ||
275 | static int hw_dev_config_set(const struct sr_dev_inst *sdi, int hwcap, | |
276 | const void *value) | |
277 | { | |
278 | int ret; | |
279 | ||
280 | if (sdi->status != SR_ST_ACTIVE) | |
281 | return SR_ERR; | |
282 | ||
283 | ret = SR_OK; | |
284 | switch (hwcap) { | |
285 | /* TODO */ | |
286 | default: | |
287 | ret = SR_ERR_ARG; | |
288 | } | |
289 | ||
290 | return ret; | |
291 | } | |
292 | ||
293 | static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi, | |
294 | void *cb_data) | |
295 | { | |
296 | ||
297 | /* TODO */ | |
298 | ||
299 | return SR_OK; | |
300 | } | |
301 | ||
302 | static int hw_dev_acquisition_stop(const struct sr_dev_inst *sdi, | |
303 | void *cb_data) | |
304 | { | |
305 | ||
306 | (void)cb_data; | |
307 | ||
308 | if (sdi->status != SR_ST_ACTIVE) | |
309 | return SR_ERR; | |
310 | ||
311 | /* TODO */ | |
312 | ||
313 | return SR_OK; | |
314 | } | |
315 | ||
e7edd64f | 316 | SR_PRIV struct sr_dev_driver flukedmm_driver_info = { |
883a2e9e BV |
317 | .name = "fluke-dmm", |
318 | .longname = "Fluke 18x/28x series DMMs", | |
319 | .api_version = 1, | |
320 | .init = hw_init, | |
321 | .cleanup = hw_cleanup, | |
322 | .scan = hw_scan, | |
323 | .dev_list = hw_dev_list, | |
324 | .dev_clear = clear_instances, | |
325 | .dev_open = hw_dev_open, | |
326 | .dev_close = hw_dev_close, | |
327 | .info_get = hw_info_get, | |
328 | .dev_config_set = hw_dev_config_set, | |
329 | .dev_acquisition_start = hw_dev_acquisition_start, | |
330 | .dev_acquisition_stop = hw_dev_acquisition_stop, | |
331 | .priv = NULL, | |
332 | }; |