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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 | #include "protocol.h" | |
21 | ||
22 | static const int32_t hwopts[] = { | |
23 | SR_CONF_CONN, | |
24 | SR_CONF_SERIALCOMM, | |
25 | }; | |
26 | ||
27 | static const int32_t hwcaps[] = { | |
28 | SR_CONF_MULTIMETER, | |
29 | SR_CONF_LIMIT_SAMPLES, | |
30 | SR_CONF_LIMIT_MSEC, | |
31 | SR_CONF_CONTINUOUS, | |
32 | }; | |
33 | ||
34 | #define BUF_MAX 50 | |
35 | ||
36 | #define SERIALCOMM "4800/8n1/dtr=1/rts=0/flow=1" | |
37 | ||
38 | SR_PRIV struct sr_dev_driver norma_dmm_driver_info; | |
39 | static struct sr_dev_driver *di = &norma_dmm_driver_info; | |
40 | ||
41 | static int init(struct sr_context *sr_ctx) | |
42 | { | |
43 | return std_init(sr_ctx, di, LOG_PREFIX); | |
44 | } | |
45 | ||
46 | static GSList *scan(GSList *options) | |
47 | { | |
48 | struct sr_dev_inst *sdi; | |
49 | struct drv_context *drvc; | |
50 | struct dev_context *devc; | |
51 | struct sr_config *src; | |
52 | struct sr_probe *probe; | |
53 | struct sr_serial_dev_inst *serial; | |
54 | GSList *l, *devices; | |
55 | int len, cnt; | |
56 | const char *conn, *serialcomm; | |
57 | char *buf; | |
58 | char fmttype[10]; | |
59 | char req[10]; | |
60 | int auxtype; | |
61 | ||
62 | devices = NULL; | |
63 | drvc = di->priv; | |
64 | drvc->instances = NULL; | |
65 | conn = serialcomm = NULL; | |
66 | ||
67 | for (l = options; l; l = l->next) { | |
68 | src = l->data; | |
69 | switch (src->key) { | |
70 | case SR_CONF_CONN: | |
71 | conn = g_variant_get_string(src->data, NULL); | |
72 | break; | |
73 | case SR_CONF_SERIALCOMM: | |
74 | serialcomm = g_variant_get_string(src->data, NULL); | |
75 | break; | |
76 | } | |
77 | } | |
78 | if (!conn) | |
79 | return NULL; | |
80 | if (!serialcomm) | |
81 | serialcomm = SERIALCOMM; | |
82 | ||
83 | if (!(serial = sr_serial_dev_inst_new(conn, serialcomm))) | |
84 | return NULL; | |
85 | ||
86 | if (serial_open(serial, SERIAL_RDWR | SERIAL_NONBLOCK) != SR_OK) | |
87 | return NULL; | |
88 | ||
89 | serial_flush(serial); | |
90 | ||
91 | if (!(buf = g_try_malloc(BUF_MAX))) { | |
92 | sr_err("Serial buffer malloc failed."); | |
93 | return NULL; | |
94 | } | |
95 | ||
96 | snprintf(req, sizeof(req), "%s\r\n", | |
97 | nmadmm_requests[NMADMM_REQ_IDN].req_str); | |
98 | for (cnt = 0; cnt < 7; cnt++) { | |
99 | if (serial_write(serial, req, strlen(req)) == -1) { | |
100 | sr_err("Unable to send identification request: %d %s.", | |
101 | errno, strerror(errno)); | |
102 | return NULL; | |
103 | } | |
104 | len = BUF_MAX; | |
105 | serial_readline(serial, &buf, &len, 1500); | |
106 | if (!len) | |
107 | continue; | |
108 | buf[BUF_MAX - 1] = '\0'; | |
109 | ||
110 | /* Match ID string, e.g. "1834 065 V1.06,IF V1.02" (DM950) */ | |
111 | if (g_regex_match_simple("^1834 [^,]*,IF V*", (char *)buf, 0, 0)) { | |
112 | auxtype = xgittoint(buf[7]); | |
113 | // TODO: Will this work with non-DM950? | |
114 | snprintf(fmttype, sizeof(fmttype), "DM9%d0", auxtype); | |
115 | sr_spew("Norma %s DMM %s detected!", fmttype, &buf[9]); | |
116 | ||
117 | if (!(sdi = sr_dev_inst_new(0, SR_ST_INACTIVE, | |
118 | "Norma", fmttype, buf + 9))) | |
119 | return NULL; | |
120 | if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) { | |
121 | sr_err("Device context malloc failed."); | |
122 | return NULL; | |
123 | } | |
124 | devc->type = auxtype; | |
125 | devc->version = g_strdup(&buf[9]); | |
126 | devc->elapsed_msec = g_timer_new(); | |
127 | ||
128 | sdi->conn = serial; | |
129 | sdi->priv = devc; | |
130 | sdi->driver = di; | |
131 | if (!(probe = sr_probe_new(0, SR_PROBE_ANALOG, TRUE, | |
132 | "P1"))) | |
133 | return NULL; | |
134 | sdi->probes = g_slist_append(sdi->probes, probe); | |
135 | drvc->instances = g_slist_append(drvc->instances, sdi); | |
136 | devices = g_slist_append(devices, sdi); | |
137 | break; | |
138 | } | |
139 | ||
140 | /* | |
141 | * The interface of the DM9x0 contains a cap that needs to | |
142 | * charge for up to 10s before the interface works, if not | |
143 | * powered externally. Therefore wait a little to improve | |
144 | * chances. | |
145 | */ | |
146 | if (cnt == 3) { | |
147 | sr_info("Waiting 5s to allow interface to settle."); | |
148 | g_usleep(5 * 1000 * 1000); | |
149 | } | |
150 | } | |
151 | ||
152 | g_free(buf); | |
153 | ||
154 | serial_close(serial); | |
155 | if (!devices) | |
156 | sr_serial_dev_inst_free(serial); | |
157 | ||
158 | return devices; | |
159 | } | |
160 | ||
161 | static GSList *dev_list(void) | |
162 | { | |
163 | return ((struct drv_context *)(di->priv))->instances; | |
164 | } | |
165 | ||
166 | static int dev_clear(void) | |
167 | { | |
168 | return std_dev_clear(di, NULL); | |
169 | } | |
170 | ||
171 | static int dev_close(struct sr_dev_inst *sdi) | |
172 | { | |
173 | struct dev_context *devc; | |
174 | ||
175 | std_serial_dev_close(sdi); | |
176 | ||
177 | /* Free dynamically allocated resources. */ | |
178 | if ((devc = sdi->priv) && devc->version) { | |
179 | g_free(devc->version); | |
180 | devc->version = NULL; | |
181 | g_timer_destroy(devc->elapsed_msec); | |
182 | } | |
183 | ||
184 | return SR_OK; | |
185 | } | |
186 | ||
187 | static int cleanup(void) | |
188 | { | |
189 | return dev_clear(); | |
190 | } | |
191 | ||
192 | static int config_set(int key, GVariant *data, const struct sr_dev_inst *sdi, | |
193 | const struct sr_probe_group *probe_group) | |
194 | { | |
195 | struct dev_context *devc; | |
196 | ||
197 | (void)probe_group; | |
198 | ||
199 | if (sdi->status != SR_ST_ACTIVE) | |
200 | return SR_ERR_DEV_CLOSED; | |
201 | ||
202 | if (!(devc = sdi->priv)) { | |
203 | sr_err("sdi->priv was NULL."); | |
204 | return SR_ERR_BUG; | |
205 | } | |
206 | ||
207 | switch (key) { | |
208 | case SR_CONF_LIMIT_MSEC: | |
209 | /* TODO: not yet implemented */ | |
210 | if (g_variant_get_uint64(data) == 0) { | |
211 | sr_err("LIMIT_MSEC can't be 0."); | |
212 | return SR_ERR; | |
213 | } | |
214 | devc->limit_msec = g_variant_get_uint64(data); | |
215 | sr_dbg("Setting time limit to %" PRIu64 "ms.", | |
216 | devc->limit_msec); | |
217 | break; | |
218 | case SR_CONF_LIMIT_SAMPLES: | |
219 | devc->limit_samples = g_variant_get_uint64(data); | |
220 | sr_dbg("Setting sample limit to %" PRIu64 ".", | |
221 | devc->limit_samples); | |
222 | break; | |
223 | default: | |
224 | return SR_ERR_NA; | |
225 | } | |
226 | ||
227 | return SR_OK; | |
228 | } | |
229 | ||
230 | static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi, | |
231 | const struct sr_probe_group *probe_group) | |
232 | { | |
233 | (void)sdi; | |
234 | (void)probe_group; | |
235 | ||
236 | switch (key) { | |
237 | case SR_CONF_SCAN_OPTIONS: | |
238 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, | |
239 | hwopts, ARRAY_SIZE(hwopts), sizeof(int32_t)); | |
240 | break; | |
241 | case SR_CONF_DEVICE_OPTIONS: | |
242 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, | |
243 | hwcaps, ARRAY_SIZE(hwcaps), sizeof(int32_t)); | |
244 | break; | |
245 | default: | |
246 | return SR_ERR_NA; | |
247 | } | |
248 | ||
249 | return SR_OK; | |
250 | } | |
251 | ||
252 | static int dev_acquisition_start(const struct sr_dev_inst *sdi, | |
253 | void *cb_data) | |
254 | { | |
255 | struct dev_context *devc; | |
256 | struct sr_serial_dev_inst *serial; | |
257 | ||
258 | (void)sdi; | |
259 | (void)cb_data; | |
260 | ||
261 | if (!sdi || !cb_data || !(devc = sdi->priv)) | |
262 | return SR_ERR_BUG; | |
263 | ||
264 | if (sdi->status != SR_ST_ACTIVE) | |
265 | return SR_ERR_DEV_CLOSED; | |
266 | ||
267 | devc->cb_data = cb_data; | |
268 | ||
269 | /* Send header packet to the session bus. */ | |
270 | std_session_send_df_header(cb_data, LOG_PREFIX); | |
271 | ||
272 | /* Start timer, if required. */ | |
273 | if (devc->limit_msec) | |
274 | g_timer_start(devc->elapsed_msec); | |
275 | ||
276 | /* Poll every 100ms, or whenever some data comes in. */ | |
277 | serial = sdi->conn; | |
278 | serial_source_add(serial, G_IO_IN, 100, norma_dmm_receive_data, | |
279 | (void *)sdi); | |
280 | ||
281 | return SR_OK; | |
282 | } | |
283 | ||
284 | static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data) | |
285 | { | |
286 | struct dev_context *devc; | |
287 | ||
288 | /* Stop timer, if required. */ | |
289 | if (sdi && (devc = sdi->priv) && devc->limit_msec) | |
290 | g_timer_stop(devc->elapsed_msec); | |
291 | ||
292 | return std_serial_dev_acquisition_stop(sdi, cb_data, dev_close, | |
293 | sdi->conn, LOG_PREFIX); | |
294 | } | |
295 | ||
296 | SR_PRIV struct sr_dev_driver norma_dmm_driver_info = { | |
297 | .name = "norma-dmm", | |
298 | .longname = "Norma DM9x0 / Siemens B102x DMMs", | |
299 | .api_version = 1, | |
300 | .init = init, | |
301 | .cleanup = cleanup, | |
302 | .scan = scan, | |
303 | .dev_list = dev_list, | |
304 | .dev_clear = dev_clear, | |
305 | .config_get = NULL, | |
306 | .config_set = config_set, | |
307 | .config_list = config_list, | |
308 | .dev_open = std_serial_dev_open, | |
309 | .dev_close = dev_close, | |
310 | .dev_acquisition_start = dev_acquisition_start, | |
311 | .dev_acquisition_stop = dev_acquisition_stop, | |
312 | .priv = NULL, | |
313 | }; |