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1 | /* | |
2 | * This file is part of the libsigrok project. | |
3 | * | |
4 | * Copyright (C) 2013 Matthias Heidbrink <m-sigrok@heidbrink.biz> | |
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 | /** @file | |
21 | * Norma DM9x0/Siemens B102x DMMs driver. | |
22 | * @internal | |
23 | */ | |
24 | ||
25 | #include <config.h> | |
26 | #include "protocol.h" | |
27 | ||
28 | static const uint32_t scanopts[] = { | |
29 | SR_CONF_CONN, | |
30 | SR_CONF_SERIALCOMM, | |
31 | }; | |
32 | ||
33 | static const uint32_t devopts[] = { | |
34 | SR_CONF_MULTIMETER, | |
35 | SR_CONF_CONTINUOUS, | |
36 | SR_CONF_LIMIT_SAMPLES | SR_CONF_SET, | |
37 | SR_CONF_LIMIT_MSEC | SR_CONF_SET, | |
38 | }; | |
39 | ||
40 | #define BUF_MAX 50 | |
41 | ||
42 | #define SERIALCOMM "4800/8n1/dtr=1/rts=0/flow=1" | |
43 | ||
44 | SR_PRIV struct sr_dev_driver norma_dmm_driver_info; | |
45 | SR_PRIV struct sr_dev_driver siemens_b102x_driver_info; | |
46 | ||
47 | static const char *get_brandstr(struct sr_dev_driver *drv) | |
48 | { | |
49 | if (drv == &norma_dmm_driver_info) | |
50 | return "Norma"; | |
51 | else | |
52 | return "Siemens"; | |
53 | } | |
54 | ||
55 | static const char *get_typestr(int type, struct sr_dev_driver *drv) | |
56 | { | |
57 | static const char *nameref[5][2] = { | |
58 | {"DM910", "B1024"}, | |
59 | {"DM920", "B1025"}, | |
60 | {"DM930", "B1026"}, | |
61 | {"DM940", "B1027"}, | |
62 | {"DM950", "B1028"}}; | |
63 | ||
64 | if ((type < 1) || (type > 5)) | |
65 | return "Unknown type!"; | |
66 | ||
67 | return nameref[type-1][(drv == &siemens_b102x_driver_info)]; | |
68 | } | |
69 | ||
70 | static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx) | |
71 | { | |
72 | return std_init(sr_ctx, di, LOG_PREFIX); | |
73 | } | |
74 | ||
75 | static GSList *scan(struct sr_dev_driver *drv, GSList *options) | |
76 | { | |
77 | struct sr_dev_inst *sdi; | |
78 | struct drv_context *drvc; | |
79 | struct dev_context *devc; | |
80 | struct sr_config *src; | |
81 | struct sr_serial_dev_inst *serial; | |
82 | GSList *l, *devices; | |
83 | int len, cnt; | |
84 | const char *conn, *serialcomm; | |
85 | char *buf; | |
86 | char req[10]; | |
87 | int auxtype; | |
88 | ||
89 | devices = NULL; | |
90 | drvc = drv->context; | |
91 | drvc->instances = NULL; | |
92 | conn = serialcomm = NULL; | |
93 | ||
94 | for (l = options; l; l = l->next) { | |
95 | src = l->data; | |
96 | switch (src->key) { | |
97 | case SR_CONF_CONN: | |
98 | conn = g_variant_get_string(src->data, NULL); | |
99 | break; | |
100 | case SR_CONF_SERIALCOMM: | |
101 | serialcomm = g_variant_get_string(src->data, NULL); | |
102 | break; | |
103 | } | |
104 | } | |
105 | if (!conn) | |
106 | return NULL; | |
107 | if (!serialcomm) | |
108 | serialcomm = SERIALCOMM; | |
109 | ||
110 | serial = sr_serial_dev_inst_new(conn, serialcomm); | |
111 | ||
112 | if (serial_open(serial, SERIAL_RDWR) != SR_OK) | |
113 | return NULL; | |
114 | ||
115 | serial_flush(serial); | |
116 | ||
117 | buf = g_malloc(BUF_MAX); | |
118 | ||
119 | snprintf(req, sizeof(req), "%s\r\n", | |
120 | nmadmm_requests[NMADMM_REQ_IDN].req_str); | |
121 | g_usleep(150 * 1000); /* Wait a little to allow serial port to settle. */ | |
122 | for (cnt = 0; cnt < 7; cnt++) { | |
123 | if (serial_write_blocking(serial, req, strlen(req), | |
124 | serial_timeout(serial, strlen(req))) < 0) { | |
125 | sr_err("Unable to send identification request."); | |
126 | return NULL; | |
127 | } | |
128 | len = BUF_MAX; | |
129 | serial_readline(serial, &buf, &len, NMADMM_TIMEOUT_MS); | |
130 | if (!len) | |
131 | continue; | |
132 | buf[BUF_MAX - 1] = '\0'; | |
133 | ||
134 | /* Match ID string, e.g. "1834 065 V1.06,IF V1.02" (DM950) */ | |
135 | if (g_regex_match_simple("^1834 [^,]*,IF V*", (char *)buf, 0, 0)) { | |
136 | auxtype = xgittoint(buf[7]); | |
137 | sr_spew("%s %s DMM %s detected!", get_brandstr(drv), get_typestr(auxtype, drv), buf + 9); | |
138 | ||
139 | sdi = g_malloc0(sizeof(struct sr_dev_inst)); | |
140 | sdi->status = SR_ST_INACTIVE; | |
141 | sdi->vendor = g_strdup(get_brandstr(drv)); | |
142 | sdi->model = g_strdup(get_typestr(auxtype, drv)); | |
143 | sdi->version = g_strdup(buf + 9); | |
144 | devc = g_malloc0(sizeof(struct dev_context)); | |
145 | devc->type = auxtype; | |
146 | devc->version = g_strdup(&buf[9]); | |
147 | devc->elapsed_msec = g_timer_new(); | |
148 | sdi->conn = serial; | |
149 | sdi->priv = devc; | |
150 | sdi->driver = drv; | |
151 | sr_channel_new(sdi, 0, SR_CHANNEL_ANALOG, TRUE, "P1"); | |
152 | drvc->instances = g_slist_append(drvc->instances, sdi); | |
153 | devices = g_slist_append(devices, sdi); | |
154 | break; | |
155 | } | |
156 | ||
157 | /* | |
158 | * The interface of the DM9x0 contains a cap that needs to | |
159 | * charge for up to 10s before the interface works, if not | |
160 | * powered externally. Therefore wait a little to improve | |
161 | * chances. | |
162 | */ | |
163 | if (cnt == 3) { | |
164 | sr_info("Waiting 5s to allow interface to settle."); | |
165 | g_usleep(5 * 1000 * 1000); | |
166 | } | |
167 | } | |
168 | ||
169 | g_free(buf); | |
170 | ||
171 | serial_close(serial); | |
172 | if (!devices) | |
173 | sr_serial_dev_inst_free(serial); | |
174 | ||
175 | return devices; | |
176 | } | |
177 | ||
178 | static GSList *dev_list(const struct sr_dev_driver *di) | |
179 | { | |
180 | return ((struct drv_context *)(di->context))->instances; | |
181 | } | |
182 | ||
183 | static int dev_close(struct sr_dev_inst *sdi) | |
184 | { | |
185 | struct dev_context *devc; | |
186 | ||
187 | std_serial_dev_close(sdi); | |
188 | ||
189 | /* Free dynamically allocated resources. */ | |
190 | if ((devc = sdi->priv) && devc->version) { | |
191 | g_free(devc->version); | |
192 | devc->version = NULL; | |
193 | g_timer_destroy(devc->elapsed_msec); | |
194 | } | |
195 | ||
196 | return SR_OK; | |
197 | } | |
198 | ||
199 | static int cleanup(const struct sr_dev_driver *di) | |
200 | { | |
201 | return std_dev_clear(di, NULL); | |
202 | } | |
203 | ||
204 | static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi, | |
205 | const struct sr_channel_group *cg) | |
206 | { | |
207 | struct dev_context *devc; | |
208 | ||
209 | (void)cg; | |
210 | ||
211 | if (sdi->status != SR_ST_ACTIVE) | |
212 | return SR_ERR_DEV_CLOSED; | |
213 | ||
214 | if (!(devc = sdi->priv)) { | |
215 | sr_err("sdi->priv was NULL."); | |
216 | return SR_ERR_BUG; | |
217 | } | |
218 | ||
219 | switch (key) { | |
220 | case SR_CONF_LIMIT_MSEC: | |
221 | devc->limit_msec = g_variant_get_uint64(data); | |
222 | break; | |
223 | case SR_CONF_LIMIT_SAMPLES: | |
224 | devc->limit_samples = g_variant_get_uint64(data); | |
225 | break; | |
226 | default: | |
227 | return SR_ERR_NA; | |
228 | } | |
229 | ||
230 | return SR_OK; | |
231 | } | |
232 | ||
233 | static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, | |
234 | const struct sr_channel_group *cg) | |
235 | { | |
236 | (void)sdi; | |
237 | (void)cg; | |
238 | ||
239 | switch (key) { | |
240 | case SR_CONF_SCAN_OPTIONS: | |
241 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
242 | scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t)); | |
243 | break; | |
244 | case SR_CONF_DEVICE_OPTIONS: | |
245 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
246 | devopts, ARRAY_SIZE(devopts), sizeof(uint32_t)); | |
247 | break; | |
248 | default: | |
249 | return SR_ERR_NA; | |
250 | } | |
251 | ||
252 | return SR_OK; | |
253 | } | |
254 | ||
255 | static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data) | |
256 | { | |
257 | struct dev_context *devc; | |
258 | struct sr_serial_dev_inst *serial; | |
259 | ||
260 | if (!sdi || !cb_data || !(devc = sdi->priv)) | |
261 | return SR_ERR_BUG; | |
262 | ||
263 | if (sdi->status != SR_ST_ACTIVE) | |
264 | return SR_ERR_DEV_CLOSED; | |
265 | ||
266 | devc->cb_data = cb_data; | |
267 | ||
268 | /* Send header packet to the session bus. */ | |
269 | std_session_send_df_header(cb_data, LOG_PREFIX); | |
270 | ||
271 | /* Start timer, if required. */ | |
272 | if (devc->limit_msec) | |
273 | g_timer_start(devc->elapsed_msec); | |
274 | ||
275 | /* Poll every 100ms, or whenever some data comes in. */ | |
276 | serial = sdi->conn; | |
277 | serial_source_add(sdi->session, serial, G_IO_IN, 100, | |
278 | norma_dmm_receive_data, (void *)sdi); | |
279 | ||
280 | return SR_OK; | |
281 | } | |
282 | ||
283 | static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data) | |
284 | { | |
285 | struct dev_context *devc; | |
286 | ||
287 | /* Stop timer, if required. */ | |
288 | if (sdi && (devc = sdi->priv) && devc->limit_msec) | |
289 | g_timer_stop(devc->elapsed_msec); | |
290 | ||
291 | return std_serial_dev_acquisition_stop(sdi, cb_data, dev_close, | |
292 | sdi->conn, LOG_PREFIX); | |
293 | } | |
294 | ||
295 | SR_PRIV struct sr_dev_driver norma_dmm_driver_info = { | |
296 | .name = "norma-dmm", | |
297 | .longname = "Norma DM9x0 DMMs", | |
298 | .api_version = 1, | |
299 | .init = init, | |
300 | .cleanup = cleanup, | |
301 | .scan = scan, | |
302 | .dev_list = dev_list, | |
303 | .dev_clear = NULL, | |
304 | .config_get = NULL, | |
305 | .config_set = config_set, | |
306 | .config_list = config_list, | |
307 | .dev_open = std_serial_dev_open, | |
308 | .dev_close = dev_close, | |
309 | .dev_acquisition_start = dev_acquisition_start, | |
310 | .dev_acquisition_stop = dev_acquisition_stop, | |
311 | .context = NULL, | |
312 | }; | |
313 | ||
314 | SR_PRIV struct sr_dev_driver siemens_b102x_driver_info = { | |
315 | .name = "siemens-b102x", | |
316 | .longname = "Siemens B102x DMMs", | |
317 | .api_version = 1, | |
318 | .init = init, | |
319 | .cleanup = cleanup, | |
320 | .scan = scan, | |
321 | .dev_list = dev_list, | |
322 | .dev_clear = NULL, | |
323 | .config_get = NULL, | |
324 | .config_set = config_set, | |
325 | .config_list = config_list, | |
326 | .dev_open = std_serial_dev_open, | |
327 | .dev_close = dev_close, | |
328 | .dev_acquisition_start = dev_acquisition_start, | |
329 | .dev_acquisition_stop = dev_acquisition_stop, | |
330 | .context = NULL, | |
331 | }; |