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Simplify channel creation.
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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 "protocol.h"
26
27static const uint32_t scanopts[] = {
28 SR_CONF_CONN,
29 SR_CONF_SERIALCOMM,
30};
31
32static const uint32_t devopts[] = {
33 SR_CONF_MULTIMETER,
34 SR_CONF_CONTINUOUS,
35 SR_CONF_LIMIT_SAMPLES | SR_CONF_SET,
36 SR_CONF_LIMIT_MSEC | SR_CONF_SET,
37};
38
39#define BUF_MAX 50
40
41#define SERIALCOMM "4800/8n1/dtr=1/rts=0/flow=1"
42
43SR_PRIV struct sr_dev_driver norma_dmm_driver_info;
44SR_PRIV struct sr_dev_driver siemens_b102x_driver_info;
45
46static const char* get_brandstr(struct sr_dev_driver* drv)
47{
48 if (drv == &norma_dmm_driver_info)
49 return "Norma";
50 else
51 return "Siemens";
52}
53
54static const char* get_typestr(int type, struct sr_dev_driver* drv)
55{
56 static const char* nameref[5][2] = {
57 {"DM910", "B1024"},
58 {"DM920", "B1025"},
59 {"DM930", "B1026"},
60 {"DM940", "B1027"},
61 {"DM950", "B1028"}};
62
63 if ((type < 1) || (type > 5))
64 return "Unknown type!";
65
66 return nameref[type-1][(drv == &siemens_b102x_driver_info)];
67}
68
69static int init_norma_dmm(struct sr_context *sr_ctx)
70{
71 return std_init(sr_ctx, &norma_dmm_driver_info, LOG_PREFIX);
72}
73
74static int init_siemens_b102x(struct sr_context *sr_ctx)
75{
76 return std_init(sr_ctx, &siemens_b102x_driver_info, LOG_PREFIX);
77}
78
79static GSList *do_scan(struct sr_dev_driver* drv, GSList *options)
80{
81 struct sr_dev_inst *sdi;
82 struct drv_context *drvc;
83 struct dev_context *devc;
84 struct sr_config *src;
85 struct sr_serial_dev_inst *serial;
86 GSList *l, *devices;
87 int len, cnt;
88 const char *conn, *serialcomm;
89 char *buf;
90 char req[10];
91 int auxtype;
92
93 devices = NULL;
94 drvc = drv->priv;
95 drvc->instances = NULL;
96 conn = serialcomm = NULL;
97
98 for (l = options; l; l = l->next) {
99 src = l->data;
100 switch (src->key) {
101 case SR_CONF_CONN:
102 conn = g_variant_get_string(src->data, NULL);
103 break;
104 case SR_CONF_SERIALCOMM:
105 serialcomm = g_variant_get_string(src->data, NULL);
106 break;
107 }
108 }
109 if (!conn)
110 return NULL;
111 if (!serialcomm)
112 serialcomm = SERIALCOMM;
113
114 serial = sr_serial_dev_inst_new(conn, serialcomm);
115
116 if (serial_open(serial, SERIAL_RDWR) != SR_OK)
117 return NULL;
118
119 serial_flush(serial);
120
121 if (!(buf = g_try_malloc(BUF_MAX))) {
122 sr_err("Serial buffer malloc failed.");
123 return NULL;
124 }
125
126 snprintf(req, sizeof(req), "%s\r\n",
127 nmadmm_requests[NMADMM_REQ_IDN].req_str);
128 g_usleep(150 * 1000); /* Wait a little to allow serial port to settle. */
129 for (cnt = 0; cnt < 7; cnt++) {
130 if (serial_write_blocking(serial, req, strlen(req), 0) < 0) {
131 sr_err("Unable to send identification request.");
132 return NULL;
133 }
134 len = BUF_MAX;
135 serial_readline(serial, &buf, &len, NMADMM_TIMEOUT_MS);
136 if (!len)
137 continue;
138 buf[BUF_MAX - 1] = '\0';
139
140 /* Match ID string, e.g. "1834 065 V1.06,IF V1.02" (DM950) */
141 if (g_regex_match_simple("^1834 [^,]*,IF V*", (char *)buf, 0, 0)) {
142 auxtype = xgittoint(buf[7]);
143 sr_spew("%s %s DMM %s detected!", get_brandstr(drv), get_typestr(auxtype, drv), buf + 9);
144
145 sdi = g_malloc0(sizeof(struct sr_dev_inst));
146 sdi->status = SR_ST_INACTIVE;
147 sdi->vendor = g_strdup(get_brandstr(drv));
148 sdi->model = g_strdup(get_typestr(auxtype, drv));
149 sdi->version = g_strdup(buf + 9);
150 devc = g_malloc0(sizeof(struct dev_context));
151 devc->type = auxtype;
152 devc->version = g_strdup(&buf[9]);
153 devc->elapsed_msec = g_timer_new();
154 sdi->conn = serial;
155 sdi->priv = devc;
156 sdi->driver = drv;
157 sr_channel_new(sdi, 0, SR_CHANNEL_ANALOG, TRUE, "P1");
158 drvc->instances = g_slist_append(drvc->instances, sdi);
159 devices = g_slist_append(devices, sdi);
160 break;
161 }
162
163 /*
164 * The interface of the DM9x0 contains a cap that needs to
165 * charge for up to 10s before the interface works, if not
166 * powered externally. Therefore wait a little to improve
167 * chances.
168 */
169 if (cnt == 3) {
170 sr_info("Waiting 5s to allow interface to settle.");
171 g_usleep(5 * 1000 * 1000);
172 }
173 }
174
175 g_free(buf);
176
177 serial_close(serial);
178 if (!devices)
179 sr_serial_dev_inst_free(serial);
180
181 return devices;
182}
183
184static GSList *scan_norma_dmm(GSList *options)
185{
186 return do_scan(&norma_dmm_driver_info, options);
187}
188
189static GSList *scan_siemens_b102x(GSList *options)
190{
191 return do_scan(&siemens_b102x_driver_info, options);
192}
193
194static GSList *dev_list_norma_dmm(void)
195{
196 return ((struct drv_context *)(norma_dmm_driver_info.priv))->instances;
197}
198
199static GSList *dev_list_siemens_b102x(void)
200{
201 return ((struct drv_context *)(siemens_b102x_driver_info.priv))->instances;
202}
203
204static int dev_close(struct sr_dev_inst *sdi)
205{
206 struct dev_context *devc;
207
208 std_serial_dev_close(sdi);
209
210 /* Free dynamically allocated resources. */
211 if ((devc = sdi->priv) && devc->version) {
212 g_free(devc->version);
213 devc->version = NULL;
214 g_timer_destroy(devc->elapsed_msec);
215 }
216
217 return SR_OK;
218}
219
220static int cleanup_norma_dmm(void)
221{
222 return std_dev_clear(&norma_dmm_driver_info, NULL);
223}
224
225static int cleanup_siemens_b102x(void)
226{
227 return std_dev_clear(&siemens_b102x_driver_info, NULL);
228}
229
230static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi,
231 const struct sr_channel_group *cg)
232{
233 struct dev_context *devc;
234
235 (void)cg;
236
237 if (sdi->status != SR_ST_ACTIVE)
238 return SR_ERR_DEV_CLOSED;
239
240 if (!(devc = sdi->priv)) {
241 sr_err("sdi->priv was NULL.");
242 return SR_ERR_BUG;
243 }
244
245 switch (key) {
246 case SR_CONF_LIMIT_MSEC:
247 if (g_variant_get_uint64(data) == 0) {
248 sr_err("LIMIT_MSEC can't be 0.");
249 return SR_ERR;
250 }
251 devc->limit_msec = g_variant_get_uint64(data);
252 sr_dbg("Setting time limit to %" PRIu64 "ms.",
253 devc->limit_msec);
254 break;
255 case SR_CONF_LIMIT_SAMPLES:
256 devc->limit_samples = g_variant_get_uint64(data);
257 sr_dbg("Setting sample limit to %" PRIu64 ".",
258 devc->limit_samples);
259 break;
260 default:
261 return SR_ERR_NA;
262 }
263
264 return SR_OK;
265}
266
267static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
268 const struct sr_channel_group *cg)
269{
270 (void)sdi;
271 (void)cg;
272
273 switch (key) {
274 case SR_CONF_SCAN_OPTIONS:
275 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
276 scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
277 break;
278 case SR_CONF_DEVICE_OPTIONS:
279 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
280 devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
281 break;
282 default:
283 return SR_ERR_NA;
284 }
285
286 return SR_OK;
287}
288
289static int dev_acquisition_start(const struct sr_dev_inst *sdi,
290 void *cb_data)
291{
292 struct dev_context *devc;
293 struct sr_serial_dev_inst *serial;
294
295 if (!sdi || !cb_data || !(devc = sdi->priv))
296 return SR_ERR_BUG;
297
298 if (sdi->status != SR_ST_ACTIVE)
299 return SR_ERR_DEV_CLOSED;
300
301 devc->cb_data = cb_data;
302
303 /* Send header packet to the session bus. */
304 std_session_send_df_header(cb_data, LOG_PREFIX);
305
306 /* Start timer, if required. */
307 if (devc->limit_msec)
308 g_timer_start(devc->elapsed_msec);
309
310 /* Poll every 100ms, or whenever some data comes in. */
311 serial = sdi->conn;
312 serial_source_add(sdi->session, serial, G_IO_IN, 100,
313 norma_dmm_receive_data, (void *)sdi);
314
315 return SR_OK;
316}
317
318static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
319{
320 struct dev_context *devc;
321
322 /* Stop timer, if required. */
323 if (sdi && (devc = sdi->priv) && devc->limit_msec)
324 g_timer_stop(devc->elapsed_msec);
325
326 return std_serial_dev_acquisition_stop(sdi, cb_data, dev_close,
327 sdi->conn, LOG_PREFIX);
328}
329
330SR_PRIV struct sr_dev_driver norma_dmm_driver_info = {
331 .name = "norma-dmm",
332 .longname = "Norma DM9x0 DMMs",
333 .api_version = 1,
334 .init = init_norma_dmm,
335 .cleanup = cleanup_norma_dmm,
336 .scan = scan_norma_dmm,
337 .dev_list = dev_list_norma_dmm,
338 .dev_clear = NULL,
339 .config_get = NULL,
340 .config_set = config_set,
341 .config_list = config_list,
342 .dev_open = std_serial_dev_open,
343 .dev_close = dev_close,
344 .dev_acquisition_start = dev_acquisition_start,
345 .dev_acquisition_stop = dev_acquisition_stop,
346 .priv = NULL,
347};
348
349
350SR_PRIV struct sr_dev_driver siemens_b102x_driver_info = {
351 .name = "siemens-b102x",
352 .longname = "Siemens B102x DMMs",
353 .api_version = 1,
354 .init = init_siemens_b102x,
355 .cleanup = cleanup_siemens_b102x,
356 .scan = scan_siemens_b102x,
357 .dev_list = dev_list_siemens_b102x,
358 .dev_clear = NULL,
359 .config_get = NULL,
360 .config_set = config_set,
361 .config_list = config_list,
362 .dev_open = std_serial_dev_open,
363 .dev_close = dev_close,
364 .dev_acquisition_start = dev_acquisition_start,
365 .dev_acquisition_stop = dev_acquisition_stop,
366 .priv = NULL,
367};