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1 | /* | |
2 | * This file is part of the libsigrok 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 <sys/types.h> | |
22 | #include <sys/stat.h> | |
23 | #include <fcntl.h> | |
24 | #include <string.h> | |
25 | #include <errno.h> | |
26 | #include "libsigrok.h" | |
27 | #include "libsigrok-internal.h" | |
28 | #include "fluke-dmm.h" | |
29 | ||
30 | static const int32_t hwopts[] = { | |
31 | SR_CONF_CONN, | |
32 | SR_CONF_SERIALCOMM, | |
33 | }; | |
34 | ||
35 | static const int32_t hwcaps[] = { | |
36 | SR_CONF_MULTIMETER, | |
37 | SR_CONF_LIMIT_SAMPLES, | |
38 | SR_CONF_LIMIT_MSEC, | |
39 | SR_CONF_CONTINUOUS, | |
40 | }; | |
41 | ||
42 | SR_PRIV struct sr_dev_driver flukedmm_driver_info; | |
43 | static struct sr_dev_driver *di = &flukedmm_driver_info; | |
44 | ||
45 | static char *scan_conn[] = { | |
46 | /* 287/289 */ | |
47 | "115200/8n1", | |
48 | /* 187/189 */ | |
49 | "9600/8n1", | |
50 | /* Scopemeter 190 series */ | |
51 | "1200/8n1", | |
52 | NULL | |
53 | }; | |
54 | ||
55 | static const struct flukedmm_profile supported_flukedmm[] = { | |
56 | { FLUKE_187, "187", 100, 1000 }, | |
57 | { FLUKE_189, "189", 100, 1000 }, | |
58 | { FLUKE_287, "287", 100, 1000 }, | |
59 | { FLUKE_190, "199B", 1000, 3500 }, | |
60 | }; | |
61 | ||
62 | static int init(struct sr_context *sr_ctx) | |
63 | { | |
64 | return std_init(sr_ctx, di, LOG_PREFIX); | |
65 | } | |
66 | ||
67 | static GSList *fluke_scan(const char *conn, const char *serialcomm) | |
68 | { | |
69 | struct sr_dev_inst *sdi; | |
70 | struct drv_context *drvc; | |
71 | struct dev_context *devc; | |
72 | struct sr_probe *probe; | |
73 | struct sr_serial_dev_inst *serial; | |
74 | GSList *devices; | |
75 | int retry, len, i, s; | |
76 | char buf[128], *b, **tokens; | |
77 | ||
78 | if (!(serial = sr_serial_dev_inst_new(conn, serialcomm))) | |
79 | return NULL; | |
80 | ||
81 | if (serial_open(serial, SERIAL_RDWR | SERIAL_NONBLOCK) != SR_OK) | |
82 | return NULL; | |
83 | ||
84 | drvc = di->priv; | |
85 | b = buf; | |
86 | retry = 0; | |
87 | devices = NULL; | |
88 | /* We'll try the discovery sequence three times in case the device | |
89 | * is not in an idle state when we send ID. */ | |
90 | while (!devices && retry < 3) { | |
91 | retry++; | |
92 | serial_flush(serial); | |
93 | if (serial_write(serial, "ID\r", 3) == -1) { | |
94 | sr_err("Unable to send ID string: %s.", | |
95 | strerror(errno)); | |
96 | continue; | |
97 | } | |
98 | ||
99 | /* Response is first a CMD_ACK byte (ASCII '0' for OK, | |
100 | * or '1' to signify an error. */ | |
101 | len = 128; | |
102 | serial_readline(serial, &b, &len, 150); | |
103 | if (len != 1) | |
104 | continue; | |
105 | if (buf[0] != '0') | |
106 | continue; | |
107 | ||
108 | /* If CMD_ACK was OK, ID string follows. */ | |
109 | len = 128; | |
110 | serial_readline(serial, &b, &len, 850); | |
111 | if (len < 10) | |
112 | continue; | |
113 | if (strcspn(buf, ",") < 15) | |
114 | /* Looks like it's comma-separated. */ | |
115 | tokens = g_strsplit(buf, ",", 3); | |
116 | else | |
117 | /* Fluke 199B, at least, uses semicolon. */ | |
118 | tokens = g_strsplit(buf, ";", 3); | |
119 | if (!strncmp("FLUKE", tokens[0], 5) | |
120 | && tokens[1] && tokens[2]) { | |
121 | for (i = 0; supported_flukedmm[i].model; i++) { | |
122 | if (strcmp(supported_flukedmm[i].modelname, tokens[0] + 6)) | |
123 | continue; | |
124 | /* Skip leading spaces in version number. */ | |
125 | for (s = 0; tokens[1][s] == ' '; s++); | |
126 | if (!(sdi = sr_dev_inst_new(0, SR_ST_INACTIVE, "Fluke", | |
127 | tokens[0] + 6, tokens[1] + s))) | |
128 | return NULL; | |
129 | if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) { | |
130 | sr_err("Device context malloc failed."); | |
131 | return NULL; | |
132 | } | |
133 | devc->profile = &supported_flukedmm[i]; | |
134 | sdi->inst_type = SR_INST_SERIAL; | |
135 | sdi->conn = serial; | |
136 | sdi->priv = devc; | |
137 | sdi->driver = di; | |
138 | if (!(probe = sr_probe_new(0, SR_PROBE_ANALOG, TRUE, "P1"))) | |
139 | return NULL; | |
140 | sdi->probes = g_slist_append(sdi->probes, probe); | |
141 | drvc->instances = g_slist_append(drvc->instances, sdi); | |
142 | devices = g_slist_append(devices, sdi); | |
143 | break; | |
144 | } | |
145 | } | |
146 | g_strfreev(tokens); | |
147 | if (devices) | |
148 | /* Found one. */ | |
149 | break; | |
150 | } | |
151 | serial_close(serial); | |
152 | if (!devices) | |
153 | sr_serial_dev_inst_free(serial); | |
154 | ||
155 | return devices; | |
156 | } | |
157 | ||
158 | static GSList *scan(GSList *options) | |
159 | { | |
160 | struct sr_config *src; | |
161 | GSList *l, *devices; | |
162 | int i; | |
163 | const char *conn, *serialcomm; | |
164 | ||
165 | conn = serialcomm = NULL; | |
166 | for (l = options; l; l = l->next) { | |
167 | src = l->data; | |
168 | switch (src->key) { | |
169 | case SR_CONF_CONN: | |
170 | conn = g_variant_get_string(src->data, NULL); | |
171 | break; | |
172 | case SR_CONF_SERIALCOMM: | |
173 | serialcomm = g_variant_get_string(src->data, NULL); | |
174 | break; | |
175 | } | |
176 | } | |
177 | if (!conn) | |
178 | return NULL; | |
179 | ||
180 | if (serialcomm) { | |
181 | /* Use the provided comm specs. */ | |
182 | devices = fluke_scan(conn, serialcomm); | |
183 | } else { | |
184 | for (i = 0; scan_conn[i]; i++) { | |
185 | if ((devices = fluke_scan(conn, scan_conn[i]))) | |
186 | break; | |
187 | /* The Scopemeter 199B, at least, requires this | |
188 | * after all the 115k/9.6k confusion. */ | |
189 | g_usleep(5000); | |
190 | } | |
191 | } | |
192 | ||
193 | return devices; | |
194 | } | |
195 | ||
196 | static GSList *dev_list(void) | |
197 | { | |
198 | return ((struct drv_context *)(di->priv))->instances; | |
199 | } | |
200 | ||
201 | static int cleanup(void) | |
202 | { | |
203 | return std_dev_clear(di, NULL); | |
204 | } | |
205 | ||
206 | static int config_set(int id, GVariant *data, const struct sr_dev_inst *sdi, | |
207 | const struct sr_probe_group *probe_group) | |
208 | { | |
209 | struct dev_context *devc; | |
210 | ||
211 | (void)probe_group; | |
212 | ||
213 | if (sdi->status != SR_ST_ACTIVE) | |
214 | return SR_ERR_DEV_CLOSED; | |
215 | ||
216 | if (!(devc = sdi->priv)) { | |
217 | sr_err("sdi->priv was NULL."); | |
218 | return SR_ERR_BUG; | |
219 | } | |
220 | ||
221 | switch (id) { | |
222 | case SR_CONF_LIMIT_MSEC: | |
223 | /* TODO: not yet implemented */ | |
224 | if (g_variant_get_uint64(data) == 0) { | |
225 | sr_err("LIMIT_MSEC can't be 0."); | |
226 | return SR_ERR; | |
227 | } | |
228 | devc->limit_msec = g_variant_get_uint64(data); | |
229 | sr_dbg("Setting time limit to %" PRIu64 "ms.", | |
230 | devc->limit_msec); | |
231 | break; | |
232 | case SR_CONF_LIMIT_SAMPLES: | |
233 | devc->limit_samples = g_variant_get_uint64(data); | |
234 | sr_dbg("Setting sample limit to %" PRIu64 ".", | |
235 | devc->limit_samples); | |
236 | break; | |
237 | default: | |
238 | return SR_ERR_NA; | |
239 | } | |
240 | ||
241 | return SR_OK; | |
242 | } | |
243 | ||
244 | static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi, | |
245 | const struct sr_probe_group *probe_group) | |
246 | { | |
247 | (void)sdi; | |
248 | (void)probe_group; | |
249 | ||
250 | switch (key) { | |
251 | case SR_CONF_SCAN_OPTIONS: | |
252 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, | |
253 | hwopts, ARRAY_SIZE(hwopts), sizeof(int32_t)); | |
254 | break; | |
255 | case SR_CONF_DEVICE_OPTIONS: | |
256 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, | |
257 | hwcaps, ARRAY_SIZE(hwcaps), sizeof(int32_t)); | |
258 | break; | |
259 | default: | |
260 | return SR_ERR_NA; | |
261 | } | |
262 | ||
263 | return SR_OK; | |
264 | } | |
265 | ||
266 | static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data) | |
267 | { | |
268 | struct dev_context *devc; | |
269 | struct sr_serial_dev_inst *serial; | |
270 | ||
271 | if (sdi->status != SR_ST_ACTIVE) | |
272 | return SR_ERR_DEV_CLOSED; | |
273 | ||
274 | if (!(devc = sdi->priv)) { | |
275 | sr_err("sdi->priv was NULL."); | |
276 | return SR_ERR_BUG; | |
277 | } | |
278 | ||
279 | devc->cb_data = cb_data; | |
280 | ||
281 | /* Send header packet to the session bus. */ | |
282 | std_session_send_df_header(cb_data, LOG_PREFIX); | |
283 | ||
284 | /* Poll every 100ms, or whenever some data comes in. */ | |
285 | serial = sdi->conn; | |
286 | serial_source_add(serial, G_IO_IN, 50, fluke_receive_data, (void *)sdi); | |
287 | ||
288 | if (serial_write(serial, "QM\r", 3) == -1) { | |
289 | sr_err("Unable to send QM: %s.", strerror(errno)); | |
290 | return SR_ERR; | |
291 | } | |
292 | devc->cmd_sent_at = g_get_monotonic_time() / 1000; | |
293 | devc->expect_response = TRUE; | |
294 | ||
295 | return SR_OK; | |
296 | } | |
297 | ||
298 | static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data) | |
299 | { | |
300 | return std_serial_dev_acquisition_stop(sdi, cb_data, std_serial_dev_close, | |
301 | sdi->conn, LOG_PREFIX); | |
302 | } | |
303 | ||
304 | SR_PRIV struct sr_dev_driver flukedmm_driver_info = { | |
305 | .name = "fluke-dmm", | |
306 | .longname = "Fluke 18x/28x series DMMs", | |
307 | .api_version = 1, | |
308 | .init = init, | |
309 | .cleanup = cleanup, | |
310 | .scan = scan, | |
311 | .dev_list = dev_list, | |
312 | .dev_clear = NULL, | |
313 | .config_get = NULL, | |
314 | .config_set = config_set, | |
315 | .config_list = config_list, | |
316 | .dev_open = std_serial_dev_open, | |
317 | .dev_close = std_serial_dev_close, | |
318 | .dev_acquisition_start = dev_acquisition_start, | |
319 | .dev_acquisition_stop = dev_acquisition_stop, | |
320 | .priv = NULL, | |
321 | }; |