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8fa9368e BV |
1 | /* |
2 | * This file is part of the libsigrok project. | |
3 | * | |
4 | * Copyright (C) 2013 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 | ||
be733919 | 20 | #include <string.h> |
8fa9368e BV |
21 | #include "protocol.h" |
22 | ||
7fb8279c BV |
23 | #define SERIALCOMM "9600/8n1" |
24 | /* 23ms is the longest interval between tokens. */ | |
25 | #define MAX_SCAN_TIME 25 * 1000 | |
26 | ||
27 | static const int32_t hwopts[] = { | |
28 | SR_CONF_CONN, | |
29 | }; | |
30 | ||
31 | static const int32_t hwcaps[] = { | |
32 | SR_CONF_SOUNDLEVELMETER, | |
33 | SR_CONF_LIMIT_SAMPLES, | |
34 | SR_CONF_CONTINUOUS, | |
e1af0e85 | 35 | SR_CONF_DATALOG, |
be733919 | 36 | SR_CONF_SPL_WEIGHT_FREQ, |
7fb8279c BV |
37 | }; |
38 | ||
be733919 BV |
39 | static const char *weight_freq[] = { |
40 | "A", | |
41 | "C", | |
42 | }; | |
7fb8279c | 43 | |
8fa9368e BV |
44 | SR_PRIV struct sr_dev_driver cem_dt_885x_driver_info; |
45 | static struct sr_dev_driver *di = &cem_dt_885x_driver_info; | |
46 | ||
47 | ||
48 | static int init(struct sr_context *sr_ctx) | |
49 | { | |
50 | return std_init(sr_ctx, di, LOG_PREFIX); | |
51 | } | |
52 | ||
53 | static GSList *scan(GSList *options) | |
54 | { | |
55 | struct drv_context *drvc; | |
7fb8279c BV |
56 | struct dev_context *devc; |
57 | struct sr_config *src; | |
58 | struct sr_serial_dev_inst *serial; | |
59 | struct sr_dev_inst *sdi; | |
60 | struct sr_probe *probe; | |
61 | GSList *l, *devices; | |
62 | gint64 start; | |
63 | const char *conn; | |
64 | unsigned char c; | |
65 | ||
66 | conn = NULL; | |
67 | for (l = options; l; l = l->next) { | |
68 | src = l->data; | |
69 | if (src->key == SR_CONF_CONN) | |
70 | conn = g_variant_get_string(src->data, NULL); | |
71 | } | |
72 | if (!conn) | |
73 | return NULL; | |
74 | ||
75 | if (!(serial = sr_serial_dev_inst_new(conn, SERIALCOMM))) | |
76 | return NULL; | |
8fa9368e | 77 | |
7fb8279c BV |
78 | if (serial_open(serial, SERIAL_RDONLY | SERIAL_NONBLOCK) != SR_OK) |
79 | return NULL; | |
8fa9368e BV |
80 | |
81 | devices = NULL; | |
82 | drvc = di->priv; | |
7fb8279c BV |
83 | start = g_get_monotonic_time(); |
84 | while (g_get_monotonic_time() - start < MAX_SCAN_TIME) { | |
85 | if (serial_read(serial, &c, 1) == 1 && c == 0xa5) { | |
86 | /* Found one. */ | |
87 | if (!(sdi = sr_dev_inst_new(0, SR_ST_INACTIVE, "CEM", | |
88 | "DT-885x", NULL))) | |
89 | return NULL; | |
90 | ||
91 | if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) { | |
92 | sr_dbg("Device context malloc failed."); | |
93 | return NULL; | |
94 | } | |
e1af0e85 BV |
95 | devc->cur_mqflags = 0; |
96 | devc->recording = -1; | |
7fb8279c BV |
97 | |
98 | if (!(sdi->conn = sr_serial_dev_inst_new(conn, SERIALCOMM))) | |
99 | return NULL; | |
100 | ||
101 | sdi->inst_type = SR_INST_SERIAL; | |
102 | sdi->priv = devc; | |
103 | sdi->driver = di; | |
e37c4b39 | 104 | if (!(probe = sr_probe_new(0, SR_PROBE_ANALOG, TRUE, "SPL"))) |
7fb8279c BV |
105 | return NULL; |
106 | sdi->probes = g_slist_append(sdi->probes, probe); | |
107 | drvc->instances = g_slist_append(drvc->instances, sdi); | |
108 | devices = g_slist_append(devices, sdi); | |
109 | break; | |
110 | } | |
111 | /* It takes about 1ms for a byte to come in. */ | |
112 | g_usleep(1000); | |
113 | } | |
8fa9368e | 114 | |
7fb8279c | 115 | serial_close(serial); |
8fa9368e BV |
116 | |
117 | return devices; | |
118 | } | |
119 | ||
120 | static GSList *dev_list(void) | |
121 | { | |
122 | struct drv_context *drvc; | |
123 | ||
124 | drvc = di->priv; | |
125 | ||
126 | return drvc->instances; | |
127 | } | |
128 | ||
129 | static int dev_clear(void) | |
130 | { | |
131 | return std_dev_clear(di, NULL); | |
132 | } | |
133 | ||
134 | static int dev_open(struct sr_dev_inst *sdi) | |
135 | { | |
7fb8279c | 136 | struct sr_serial_dev_inst *serial; |
8fa9368e | 137 | |
7fb8279c BV |
138 | serial = sdi->conn; |
139 | if (serial_open(serial, SERIAL_RDWR) != SR_OK) | |
140 | return SR_ERR; | |
8fa9368e BV |
141 | |
142 | sdi->status = SR_ST_ACTIVE; | |
143 | ||
144 | return SR_OK; | |
145 | } | |
146 | ||
147 | static int dev_close(struct sr_dev_inst *sdi) | |
148 | { | |
7fb8279c | 149 | struct sr_serial_dev_inst *serial; |
8fa9368e | 150 | |
7fb8279c BV |
151 | serial = sdi->conn; |
152 | if (serial && serial->fd != -1) { | |
153 | serial_close(serial); | |
154 | sdi->status = SR_ST_INACTIVE; | |
155 | } | |
8fa9368e BV |
156 | |
157 | return SR_OK; | |
158 | } | |
159 | ||
160 | static int cleanup(void) | |
161 | { | |
7fb8279c | 162 | return dev_clear(); |
8fa9368e BV |
163 | } |
164 | ||
165 | static int config_get(int key, GVariant **data, const struct sr_dev_inst *sdi) | |
166 | { | |
7fb8279c | 167 | struct dev_context *devc; |
be733919 | 168 | int tmp; |
8fa9368e | 169 | |
7fb8279c BV |
170 | if (!sdi) |
171 | return SR_ERR_ARG; | |
8fa9368e | 172 | |
7fb8279c | 173 | devc = sdi->priv; |
8fa9368e | 174 | switch (key) { |
7fb8279c BV |
175 | case SR_CONF_LIMIT_SAMPLES: |
176 | *data = g_variant_new_uint64(devc->limit_samples); | |
177 | break; | |
e1af0e85 BV |
178 | case SR_CONF_DATALOG: |
179 | *data = g_variant_new_boolean(cem_dt_885x_recording_get(sdi)); | |
180 | break; | |
be733919 BV |
181 | case SR_CONF_SPL_WEIGHT_FREQ: |
182 | tmp = cem_dt_885x_weight_freq_get(sdi); | |
183 | if (tmp == SR_MQFLAG_SPL_FREQ_WEIGHT_A) | |
184 | *data = g_variant_new_string("A"); | |
185 | else if (tmp == SR_MQFLAG_SPL_FREQ_WEIGHT_C) | |
186 | *data = g_variant_new_string("C"); | |
187 | else | |
188 | return SR_ERR; | |
189 | break; | |
8fa9368e BV |
190 | default: |
191 | return SR_ERR_NA; | |
192 | } | |
193 | ||
7fb8279c | 194 | return SR_OK; |
8fa9368e BV |
195 | } |
196 | ||
197 | static int config_set(int key, GVariant *data, const struct sr_dev_inst *sdi) | |
198 | { | |
7fb8279c BV |
199 | struct dev_context *devc; |
200 | uint64_t tmp_u64; | |
8fa9368e | 201 | int ret; |
be733919 | 202 | const char *tmp_str; |
8fa9368e | 203 | |
8fa9368e BV |
204 | if (sdi->status != SR_ST_ACTIVE) |
205 | return SR_ERR_DEV_CLOSED; | |
206 | ||
7fb8279c BV |
207 | if (!(devc = sdi->priv)) { |
208 | sr_err("sdi->priv was NULL."); | |
209 | return SR_ERR_BUG; | |
210 | } | |
211 | ||
8fa9368e BV |
212 | ret = SR_OK; |
213 | switch (key) { | |
7fb8279c BV |
214 | case SR_CONF_LIMIT_SAMPLES: |
215 | tmp_u64 = g_variant_get_uint64(data); | |
216 | devc->limit_samples = tmp_u64; | |
217 | ret = SR_OK; | |
218 | break; | |
e1af0e85 BV |
219 | case SR_CONF_DATALOG: |
220 | if (g_variant_get_boolean(data)) { | |
221 | /* Start logging. */ | |
222 | ret = cem_dt_885x_recording_set(sdi, TRUE); | |
223 | } else { | |
224 | /* Stop logging. */ | |
225 | ret = cem_dt_885x_recording_set(sdi, FALSE); | |
226 | } | |
227 | break; | |
be733919 BV |
228 | case SR_CONF_SPL_WEIGHT_FREQ: |
229 | tmp_str = g_variant_get_string(data, NULL); | |
230 | if (!strcmp(tmp_str, "A")) | |
231 | ret = cem_dt_885x_weight_freq_set(sdi, | |
232 | SR_MQFLAG_SPL_FREQ_WEIGHT_A); | |
233 | else if (!strcmp(tmp_str, "C")) | |
234 | ret = cem_dt_885x_weight_freq_set(sdi, | |
235 | SR_MQFLAG_SPL_FREQ_WEIGHT_C); | |
236 | else | |
237 | return SR_ERR_ARG; | |
238 | break; | |
8fa9368e BV |
239 | default: |
240 | ret = SR_ERR_NA; | |
241 | } | |
242 | ||
243 | return ret; | |
244 | } | |
245 | ||
246 | static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi) | |
247 | { | |
248 | int ret; | |
249 | ||
250 | (void)sdi; | |
8fa9368e BV |
251 | |
252 | ret = SR_OK; | |
253 | switch (key) { | |
7fb8279c BV |
254 | case SR_CONF_SCAN_OPTIONS: |
255 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, | |
256 | hwopts, ARRAY_SIZE(hwopts), sizeof(int32_t)); | |
257 | break; | |
258 | case SR_CONF_DEVICE_OPTIONS: | |
259 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, | |
260 | hwcaps, ARRAY_SIZE(hwcaps), sizeof(int32_t)); | |
261 | break; | |
be733919 BV |
262 | case SR_CONF_SPL_WEIGHT_FREQ: |
263 | *data = g_variant_new_strv(weight_freq, ARRAY_SIZE(weight_freq)); | |
264 | break; | |
8fa9368e BV |
265 | default: |
266 | return SR_ERR_NA; | |
267 | } | |
268 | ||
269 | return ret; | |
270 | } | |
271 | ||
e37c4b39 | 272 | static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data) |
8fa9368e | 273 | { |
e37c4b39 BV |
274 | struct dev_context *devc; |
275 | struct sr_serial_dev_inst *serial; | |
8fa9368e BV |
276 | |
277 | if (sdi->status != SR_ST_ACTIVE) | |
278 | return SR_ERR_DEV_CLOSED; | |
279 | ||
e37c4b39 BV |
280 | if (!(devc = sdi->priv)) { |
281 | sr_err("sdi->priv was NULL."); | |
282 | return SR_ERR_BUG; | |
283 | } | |
284 | ||
285 | devc->cb_data = cb_data; | |
286 | devc->state = ST_INIT; | |
287 | devc->num_samples = 0; | |
288 | devc->buf_len = 0; | |
289 | ||
290 | /* Send header packet to the session bus. */ | |
291 | std_session_send_df_header(cb_data, LOG_PREFIX); | |
292 | ||
293 | /* Poll every 100ms, or whenever some data comes in. */ | |
294 | serial = sdi->conn; | |
295 | sr_source_add(serial->fd, G_IO_IN, 150, cem_dt_885x_receive_data, | |
296 | (void *)sdi); | |
8fa9368e BV |
297 | |
298 | return SR_OK; | |
299 | } | |
300 | ||
301 | static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data) | |
302 | { | |
303 | (void)cb_data; | |
304 | ||
305 | if (sdi->status != SR_ST_ACTIVE) | |
306 | return SR_ERR_DEV_CLOSED; | |
307 | ||
e37c4b39 BV |
308 | return std_dev_acquisition_stop_serial(sdi, cb_data, dev_close, |
309 | sdi->conn, LOG_PREFIX); | |
8fa9368e BV |
310 | |
311 | return SR_OK; | |
312 | } | |
313 | ||
314 | SR_PRIV struct sr_dev_driver cem_dt_885x_driver_info = { | |
315 | .name = "cem-dt-885x", | |
316 | .longname = "CEM DT-885x", | |
317 | .api_version = 1, | |
318 | .init = init, | |
319 | .cleanup = cleanup, | |
320 | .scan = scan, | |
321 | .dev_list = dev_list, | |
322 | .dev_clear = dev_clear, | |
323 | .config_get = config_get, | |
324 | .config_set = config_set, | |
325 | .config_list = config_list, | |
326 | .dev_open = dev_open, | |
327 | .dev_close = dev_close, | |
328 | .dev_acquisition_start = dev_acquisition_start, | |
329 | .dev_acquisition_stop = dev_acquisition_stop, | |
330 | .priv = NULL, | |
331 | }; |