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bfd48770 MH |
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 | ||
f8e76e2e MH |
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 | ||
e790bd5c | 34 | #define BUF_MAX 50 |
f8e76e2e MH |
35 | |
36 | #define SERIALCOMM "4800/8n1/dtr=1/rts=0/flow=1" | |
37 | ||
bfd48770 MH |
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 | { | |
f8e76e2e | 48 | struct sr_dev_inst *sdi; |
bfd48770 | 49 | struct drv_context *drvc; |
f8e76e2e MH |
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 | ||
bfd48770 MH |
62 | devices = NULL; |
63 | drvc = di->priv; | |
64 | drvc->instances = NULL; | |
f8e76e2e MH |
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); | |
bfd48770 | 90 | |
e790bd5c | 91 | if (!(buf = g_try_malloc(BUF_MAX))) { |
f8e76e2e MH |
92 | sr_err("Serial buffer malloc failed."); |
93 | return NULL; | |
94 | } | |
95 | ||
96 | snprintf(req, sizeof(req), "%s\r\n", | |
e790bd5c | 97 | nmadmm_requests[NMADMM_REQ_IDN].req_str); |
f8e76e2e MH |
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.", | |
e790bd5c | 101 | errno, strerror(errno)); |
f8e76e2e MH |
102 | return NULL; |
103 | } | |
104 | len = BUF_MAX; | |
105 | serial_readline(serial, &buf, &len, 1500); | |
106 | if (!len) | |
107 | continue; | |
e790bd5c | 108 | buf[BUF_MAX - 1] = '\0'; |
f8e76e2e | 109 | |
e790bd5c UH |
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)) { | |
f8e76e2e MH |
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; | |
e790bd5c | 120 | if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) { |
f8e76e2e MH |
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 | } | |
e790bd5c UH |
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 | */ | |
f8e76e2e MH |
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); | |
bfd48770 MH |
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_open(struct sr_dev_inst *sdi) | |
172 | { | |
f8e76e2e | 173 | struct sr_serial_dev_inst *serial; |
bfd48770 | 174 | |
f8e76e2e MH |
175 | serial = sdi->conn; |
176 | if (serial_open(serial, SERIAL_RDWR | SERIAL_NONBLOCK) != SR_OK) | |
177 | return SR_ERR; | |
bfd48770 MH |
178 | |
179 | sdi->status = SR_ST_ACTIVE; | |
180 | ||
181 | return SR_OK; | |
182 | } | |
183 | ||
184 | static int dev_close(struct sr_dev_inst *sdi) | |
185 | { | |
f8e76e2e MH |
186 | struct sr_serial_dev_inst *serial; |
187 | struct dev_context *devc; | |
bfd48770 | 188 | |
f8e76e2e MH |
189 | serial = sdi->conn; |
190 | if (serial && serial->fd != -1) { | |
191 | serial_close(serial); | |
192 | sdi->status = SR_ST_INACTIVE; | |
193 | } | |
bfd48770 | 194 | |
e790bd5c | 195 | /* Free dynamically allocated resources. */ |
f8e76e2e MH |
196 | if ((devc = sdi->priv) && devc->version) { |
197 | g_free(devc->version); | |
198 | devc->version = NULL; | |
199 | g_timer_destroy(devc->elapsed_msec); | |
200 | } | |
bfd48770 MH |
201 | |
202 | return SR_OK; | |
203 | } | |
204 | ||
205 | static int cleanup(void) | |
206 | { | |
f8e76e2e | 207 | return dev_clear(); |
bfd48770 MH |
208 | } |
209 | ||
bfd48770 MH |
210 | static int config_set(int key, GVariant *data, const struct sr_dev_inst *sdi) |
211 | { | |
f8e76e2e | 212 | struct dev_context *devc; |
bfd48770 MH |
213 | |
214 | if (sdi->status != SR_ST_ACTIVE) | |
215 | return SR_ERR_DEV_CLOSED; | |
216 | ||
f8e76e2e MH |
217 | if (!(devc = sdi->priv)) { |
218 | sr_err("sdi->priv was NULL."); | |
219 | return SR_ERR_BUG; | |
220 | } | |
221 | ||
bfd48770 | 222 | switch (key) { |
f8e76e2e MH |
223 | case SR_CONF_LIMIT_MSEC: |
224 | /* TODO: not yet implemented */ | |
225 | if (g_variant_get_uint64(data) == 0) { | |
226 | sr_err("LIMIT_MSEC can't be 0."); | |
227 | return SR_ERR; | |
228 | } | |
229 | devc->limit_msec = g_variant_get_uint64(data); | |
230 | sr_dbg("Setting time limit to %" PRIu64 "ms.", | |
231 | devc->limit_msec); | |
232 | break; | |
233 | case SR_CONF_LIMIT_SAMPLES: | |
234 | devc->limit_samples = g_variant_get_uint64(data); | |
235 | sr_dbg("Setting sample limit to %" PRIu64 ".", | |
236 | devc->limit_samples); | |
237 | break; | |
bfd48770 | 238 | default: |
f8e76e2e | 239 | return SR_ERR_NA; |
bfd48770 MH |
240 | } |
241 | ||
f8e76e2e | 242 | return SR_OK; |
bfd48770 MH |
243 | } |
244 | ||
245 | static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi) | |
246 | { | |
bfd48770 | 247 | (void)sdi; |
bfd48770 | 248 | |
bfd48770 | 249 | switch (key) { |
f8e76e2e MH |
250 | case SR_CONF_SCAN_OPTIONS: |
251 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, | |
252 | hwopts, ARRAY_SIZE(hwopts), sizeof(int32_t)); | |
253 | break; | |
254 | case SR_CONF_DEVICE_OPTIONS: | |
255 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, | |
256 | hwcaps, ARRAY_SIZE(hwcaps), sizeof(int32_t)); | |
257 | break; | |
bfd48770 MH |
258 | default: |
259 | return SR_ERR_NA; | |
260 | } | |
261 | ||
f8e76e2e | 262 | return SR_OK; |
bfd48770 MH |
263 | } |
264 | ||
265 | static int dev_acquisition_start(const struct sr_dev_inst *sdi, | |
266 | void *cb_data) | |
267 | { | |
f8e76e2e MH |
268 | struct dev_context *devc; |
269 | struct sr_serial_dev_inst *serial; | |
270 | ||
bfd48770 MH |
271 | (void)sdi; |
272 | (void)cb_data; | |
273 | ||
f8e76e2e MH |
274 | if (!sdi || !cb_data || !(devc = sdi->priv)) |
275 | return SR_ERR_BUG; | |
276 | ||
bfd48770 MH |
277 | if (sdi->status != SR_ST_ACTIVE) |
278 | return SR_ERR_DEV_CLOSED; | |
279 | ||
f8e76e2e MH |
280 | devc->cb_data = cb_data; |
281 | ||
282 | /* Send header packet to the session bus. */ | |
283 | std_session_send_df_header(cb_data, LOG_PREFIX); | |
284 | ||
285 | /* Start timer, if required. */ | |
286 | if (devc->limit_msec) | |
287 | g_timer_start(devc->elapsed_msec); | |
288 | ||
289 | /* Poll every 100ms, or whenever some data comes in. */ | |
290 | serial = sdi->conn; | |
291 | sr_source_add(serial->fd, G_IO_IN, 100, norma_dmm_receive_data, | |
292 | (void *)sdi); | |
bfd48770 MH |
293 | |
294 | return SR_OK; | |
295 | } | |
296 | ||
297 | static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data) | |
298 | { | |
f8e76e2e | 299 | struct dev_context *devc; |
bfd48770 | 300 | |
f8e76e2e MH |
301 | /* Stop timer, if required. */ |
302 | if (sdi && (devc = sdi->priv) && devc->limit_msec) | |
303 | g_timer_stop(devc->elapsed_msec); | |
bfd48770 | 304 | |
f8e76e2e MH |
305 | return std_dev_acquisition_stop_serial(sdi, cb_data, dev_close, |
306 | sdi->conn, LOG_PREFIX); | |
bfd48770 MH |
307 | } |
308 | ||
309 | SR_PRIV struct sr_dev_driver norma_dmm_driver_info = { | |
310 | .name = "norma-dmm", | |
e790bd5c | 311 | .longname = "Norma DM9x0 / Siemens B102x DMMs", |
bfd48770 MH |
312 | .api_version = 1, |
313 | .init = init, | |
314 | .cleanup = cleanup, | |
315 | .scan = scan, | |
316 | .dev_list = dev_list, | |
317 | .dev_clear = dev_clear, | |
f8e76e2e | 318 | .config_get = NULL, |
bfd48770 MH |
319 | .config_set = config_set, |
320 | .config_list = config_list, | |
321 | .dev_open = dev_open, | |
322 | .dev_close = dev_close, | |
323 | .dev_acquisition_start = dev_acquisition_start, | |
324 | .dev_acquisition_stop = dev_acquisition_stop, | |
325 | .priv = NULL, | |
326 | }; |