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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 uint32_t scanopts[] = { | |
31 | SR_CONF_CONN, | |
32 | SR_CONF_SERIALCOMM, | |
33 | }; | |
34 | ||
35 | static const uint32_t devopts[] = { | |
36 | SR_CONF_MULTIMETER, | |
37 | SR_CONF_CONTINUOUS, | |
38 | SR_CONF_LIMIT_SAMPLES | SR_CONF_SET, | |
39 | SR_CONF_LIMIT_MSEC | SR_CONF_SET, | |
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_channel *ch; | |
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) != 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_blocking(serial, "ID\r", 3, SERIAL_WRITE_TIMEOUT_MS) < 0) { | |
94 | sr_err("Unable to send ID string"); | |
95 | continue; | |
96 | } | |
97 | ||
98 | /* Response is first a CMD_ACK byte (ASCII '0' for OK, | |
99 | * or '1' to signify an error. */ | |
100 | len = 128; | |
101 | serial_readline(serial, &b, &len, 150); | |
102 | if (len != 1) | |
103 | continue; | |
104 | if (buf[0] != '0') | |
105 | continue; | |
106 | ||
107 | /* If CMD_ACK was OK, ID string follows. */ | |
108 | len = 128; | |
109 | serial_readline(serial, &b, &len, 850); | |
110 | if (len < 10) | |
111 | continue; | |
112 | if (strcspn(buf, ",") < 15) | |
113 | /* Looks like it's comma-separated. */ | |
114 | tokens = g_strsplit(buf, ",", 3); | |
115 | else | |
116 | /* Fluke 199B, at least, uses semicolon. */ | |
117 | tokens = g_strsplit(buf, ";", 3); | |
118 | if (!strncmp("FLUKE", tokens[0], 5) | |
119 | && tokens[1] && tokens[2]) { | |
120 | for (i = 0; supported_flukedmm[i].model; i++) { | |
121 | if (strcmp(supported_flukedmm[i].modelname, tokens[0] + 6)) | |
122 | continue; | |
123 | /* Skip leading spaces in version number. */ | |
124 | for (s = 0; tokens[1][s] == ' '; s++); | |
125 | sdi = sr_dev_inst_new(); | |
126 | sdi->status = SR_ST_INACTIVE; | |
127 | sdi->vendor = g_strdup("Fluke"); | |
128 | sdi->model = g_strdup(tokens[0] + 6); | |
129 | sdi->version = g_strdup(tokens[1] + s); | |
130 | if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) { | |
131 | sr_err("Device context malloc failed."); | |
132 | return NULL; | |
133 | } | |
134 | devc->profile = &supported_flukedmm[i]; | |
135 | sdi->inst_type = SR_INST_SERIAL; | |
136 | sdi->conn = serial; | |
137 | sdi->priv = devc; | |
138 | sdi->driver = di; | |
139 | if (!(ch = sr_channel_new(0, SR_CHANNEL_ANALOG, TRUE, "P1"))) | |
140 | return NULL; | |
141 | sdi->channels = g_slist_append(sdi->channels, ch); | |
142 | drvc->instances = g_slist_append(drvc->instances, sdi); | |
143 | devices = g_slist_append(devices, sdi); | |
144 | break; | |
145 | } | |
146 | } | |
147 | g_strfreev(tokens); | |
148 | if (devices) | |
149 | /* Found one. */ | |
150 | break; | |
151 | } | |
152 | serial_close(serial); | |
153 | if (!devices) | |
154 | sr_serial_dev_inst_free(serial); | |
155 | ||
156 | return devices; | |
157 | } | |
158 | ||
159 | static GSList *scan(GSList *options) | |
160 | { | |
161 | struct sr_config *src; | |
162 | GSList *l, *devices; | |
163 | int i; | |
164 | const char *conn, *serialcomm; | |
165 | ||
166 | conn = serialcomm = NULL; | |
167 | for (l = options; l; l = l->next) { | |
168 | src = l->data; | |
169 | switch (src->key) { | |
170 | case SR_CONF_CONN: | |
171 | conn = g_variant_get_string(src->data, NULL); | |
172 | break; | |
173 | case SR_CONF_SERIALCOMM: | |
174 | serialcomm = g_variant_get_string(src->data, NULL); | |
175 | break; | |
176 | } | |
177 | } | |
178 | if (!conn) | |
179 | return NULL; | |
180 | ||
181 | devices = NULL; | |
182 | if (serialcomm) { | |
183 | /* Use the provided comm specs. */ | |
184 | devices = fluke_scan(conn, serialcomm); | |
185 | } else { | |
186 | for (i = 0; scan_conn[i]; i++) { | |
187 | if ((devices = fluke_scan(conn, scan_conn[i]))) | |
188 | break; | |
189 | /* The Scopemeter 199B, at least, requires this | |
190 | * after all the 115k/9.6k confusion. */ | |
191 | g_usleep(5000); | |
192 | } | |
193 | } | |
194 | ||
195 | return devices; | |
196 | } | |
197 | ||
198 | static GSList *dev_list(void) | |
199 | { | |
200 | return ((struct drv_context *)(di->priv))->instances; | |
201 | } | |
202 | ||
203 | static int cleanup(void) | |
204 | { | |
205 | return std_dev_clear(di, NULL); | |
206 | } | |
207 | ||
208 | static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi, | |
209 | const struct sr_channel_group *cg) | |
210 | { | |
211 | struct dev_context *devc; | |
212 | ||
213 | (void)cg; | |
214 | ||
215 | if (sdi->status != SR_ST_ACTIVE) | |
216 | return SR_ERR_DEV_CLOSED; | |
217 | ||
218 | if (!(devc = sdi->priv)) { | |
219 | sr_err("sdi->priv was NULL."); | |
220 | return SR_ERR_BUG; | |
221 | } | |
222 | ||
223 | switch (key) { | |
224 | case SR_CONF_LIMIT_MSEC: | |
225 | /* TODO: not yet implemented */ | |
226 | if (g_variant_get_uint64(data) == 0) { | |
227 | sr_err("LIMIT_MSEC can't be 0."); | |
228 | return SR_ERR; | |
229 | } | |
230 | devc->limit_msec = g_variant_get_uint64(data); | |
231 | sr_dbg("Setting time limit to %" PRIu64 "ms.", | |
232 | devc->limit_msec); | |
233 | break; | |
234 | case SR_CONF_LIMIT_SAMPLES: | |
235 | devc->limit_samples = g_variant_get_uint64(data); | |
236 | sr_dbg("Setting sample limit to %" PRIu64 ".", | |
237 | devc->limit_samples); | |
238 | break; | |
239 | default: | |
240 | return SR_ERR_NA; | |
241 | } | |
242 | ||
243 | return SR_OK; | |
244 | } | |
245 | ||
246 | static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, | |
247 | const struct sr_channel_group *cg) | |
248 | { | |
249 | (void)sdi; | |
250 | (void)cg; | |
251 | ||
252 | switch (key) { | |
253 | case SR_CONF_SCAN_OPTIONS: | |
254 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
255 | scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t)); | |
256 | break; | |
257 | case SR_CONF_DEVICE_OPTIONS: | |
258 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
259 | devopts, ARRAY_SIZE(devopts), sizeof(uint32_t)); | |
260 | break; | |
261 | default: | |
262 | return SR_ERR_NA; | |
263 | } | |
264 | ||
265 | return SR_OK; | |
266 | } | |
267 | ||
268 | static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data) | |
269 | { | |
270 | struct dev_context *devc; | |
271 | struct sr_serial_dev_inst *serial; | |
272 | ||
273 | if (sdi->status != SR_ST_ACTIVE) | |
274 | return SR_ERR_DEV_CLOSED; | |
275 | ||
276 | if (!(devc = sdi->priv)) { | |
277 | sr_err("sdi->priv was NULL."); | |
278 | return SR_ERR_BUG; | |
279 | } | |
280 | ||
281 | devc->cb_data = cb_data; | |
282 | ||
283 | /* Send header packet to the session bus. */ | |
284 | std_session_send_df_header(cb_data, LOG_PREFIX); | |
285 | ||
286 | /* Poll every 100ms, or whenever some data comes in. */ | |
287 | serial = sdi->conn; | |
288 | serial_source_add(sdi->session, serial, G_IO_IN, 50, | |
289 | fluke_receive_data, (void *)sdi); | |
290 | ||
291 | if (serial_write_blocking(serial, "QM\r", 3, SERIAL_WRITE_TIMEOUT_MS) < 0) { | |
292 | sr_err("Unable to send QM."); | |
293 | return SR_ERR; | |
294 | } | |
295 | devc->cmd_sent_at = g_get_monotonic_time() / 1000; | |
296 | devc->expect_response = TRUE; | |
297 | ||
298 | return SR_OK; | |
299 | } | |
300 | ||
301 | static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data) | |
302 | { | |
303 | return std_serial_dev_acquisition_stop(sdi, cb_data, std_serial_dev_close, | |
304 | sdi->conn, LOG_PREFIX); | |
305 | } | |
306 | ||
307 | SR_PRIV struct sr_dev_driver flukedmm_driver_info = { | |
308 | .name = "fluke-dmm", | |
309 | .longname = "Fluke 18x/28x series DMMs", | |
310 | .api_version = 1, | |
311 | .init = init, | |
312 | .cleanup = cleanup, | |
313 | .scan = scan, | |
314 | .dev_list = dev_list, | |
315 | .dev_clear = NULL, | |
316 | .config_get = NULL, | |
317 | .config_set = config_set, | |
318 | .config_list = config_list, | |
319 | .dev_open = std_serial_dev_open, | |
320 | .dev_close = std_serial_dev_close, | |
321 | .dev_acquisition_start = dev_acquisition_start, | |
322 | .dev_acquisition_stop = dev_acquisition_stop, | |
323 | .priv = NULL, | |
324 | }; |