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1 | /* | |
2 | * This file is part of the sigrok project. | |
3 | * | |
4 | * Copyright (C) 2012 Uwe Hermann <uwe@hermann-uwe.de> | |
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 2 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, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
19 | */ | |
20 | ||
21 | #include <fcntl.h> | |
22 | #include <glib.h> | |
23 | #include "libsigrok.h" | |
24 | #include "libsigrok-internal.h" | |
25 | #include "protocol.h" | |
26 | ||
27 | #define SERIALCOMM "9600/8e1" | |
28 | ||
29 | static const int hwopts[] = { | |
30 | SR_CONF_CONN, | |
31 | SR_CONF_SERIALCOMM, | |
32 | 0, | |
33 | }; | |
34 | ||
35 | static const int hwcaps[] = { | |
36 | SR_CONF_SOUNDLEVELMETER, | |
37 | SR_CONF_LIMIT_SAMPLES, | |
38 | SR_CONF_CONTINUOUS, | |
39 | 0, | |
40 | }; | |
41 | ||
42 | SR_PRIV struct sr_dev_driver tondaj_sl_814_driver_info; | |
43 | static struct sr_dev_driver *di = &tondaj_sl_814_driver_info; | |
44 | ||
45 | /* Properly close and free all devices. */ | |
46 | static int clear_instances(void) | |
47 | { | |
48 | struct sr_dev_inst *sdi; | |
49 | struct drv_context *drvc; | |
50 | struct dev_context *devc; | |
51 | GSList *l; | |
52 | ||
53 | if (!(drvc = di->priv)) | |
54 | return SR_OK; | |
55 | ||
56 | for (l = drvc->instances; l; l = l->next) { | |
57 | if (!(sdi = l->data)) | |
58 | continue; | |
59 | if (!(devc = sdi->priv)) | |
60 | continue; | |
61 | sr_serial_dev_inst_free(devc->serial); | |
62 | sr_dev_inst_free(sdi); | |
63 | } | |
64 | ||
65 | g_slist_free(drvc->instances); | |
66 | drvc->instances = NULL; | |
67 | ||
68 | return SR_OK; | |
69 | } | |
70 | ||
71 | static int hw_init(struct sr_context *sr_ctx) | |
72 | { | |
73 | return std_hw_init(sr_ctx, di, DRIVER_LOG_DOMAIN); | |
74 | } | |
75 | ||
76 | static GSList *hw_scan(GSList *options) | |
77 | { | |
78 | struct drv_context *drvc; | |
79 | struct dev_context *devc; | |
80 | struct sr_dev_inst *sdi; | |
81 | struct sr_config *src; | |
82 | struct sr_probe *probe; | |
83 | GSList *devices, *l; | |
84 | const char *conn, *serialcomm; | |
85 | ||
86 | drvc = di->priv; | |
87 | drvc->instances = NULL; | |
88 | ||
89 | devices = NULL; | |
90 | ||
91 | conn = serialcomm = NULL; | |
92 | for (l = options; l; l = l->next) { | |
93 | if (!(src = l->data)) { | |
94 | sr_err("Invalid option data, skipping."); | |
95 | continue; | |
96 | } | |
97 | switch (src->key) { | |
98 | case SR_CONF_CONN: | |
99 | conn = src->value; | |
100 | break; | |
101 | case SR_CONF_SERIALCOMM: | |
102 | serialcomm = src->value; | |
103 | break; | |
104 | default: | |
105 | sr_err("Unknown option %d, skipping.", src->key); | |
106 | break; | |
107 | } | |
108 | } | |
109 | if (!conn) | |
110 | return NULL; | |
111 | if (!serialcomm) | |
112 | serialcomm = SERIALCOMM; | |
113 | ||
114 | if (!(sdi = sr_dev_inst_new(0, SR_ST_INACTIVE, "Tondaj", | |
115 | "SL-814", NULL))) { | |
116 | sr_err("Failed to create device instance."); | |
117 | return NULL; | |
118 | } | |
119 | ||
120 | if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) { | |
121 | sr_err("Device context malloc failed."); | |
122 | return NULL; | |
123 | } | |
124 | ||
125 | if (!(devc->serial = sr_serial_dev_inst_new(conn, serialcomm))) | |
126 | return NULL; | |
127 | ||
128 | if (serial_open(devc->serial, SERIAL_RDWR | SERIAL_NONBLOCK) != SR_OK) | |
129 | return NULL; | |
130 | ||
131 | sdi->priv = devc; | |
132 | sdi->driver = di; | |
133 | probe = sr_probe_new(0, SR_PROBE_ANALOG, TRUE, "P1"); | |
134 | if (!probe) { | |
135 | sr_err("Failed to create probe."); | |
136 | return NULL; | |
137 | } | |
138 | sdi->probes = g_slist_append(sdi->probes, probe); | |
139 | drvc->instances = g_slist_append(drvc->instances, sdi); | |
140 | devices = g_slist_append(devices, sdi); | |
141 | ||
142 | return devices; | |
143 | } | |
144 | ||
145 | static GSList *hw_dev_list(void) | |
146 | { | |
147 | struct drv_context *drvc; | |
148 | ||
149 | drvc = di->priv; | |
150 | ||
151 | return drvc->instances; | |
152 | } | |
153 | ||
154 | static int hw_dev_open(struct sr_dev_inst *sdi) | |
155 | { | |
156 | struct dev_context *devc; | |
157 | ||
158 | devc = sdi->priv; | |
159 | ||
160 | if (serial_open(devc->serial, SERIAL_RDWR | SERIAL_NONBLOCK) != SR_OK) | |
161 | return SR_ERR; | |
162 | ||
163 | sdi->status = SR_ST_ACTIVE; | |
164 | ||
165 | return SR_OK; | |
166 | } | |
167 | ||
168 | static int hw_dev_close(struct sr_dev_inst *sdi) | |
169 | { | |
170 | struct dev_context *devc; | |
171 | ||
172 | devc = sdi->priv; | |
173 | ||
174 | if (devc->serial && devc->serial->fd != -1) { | |
175 | serial_close(devc->serial); | |
176 | sdi->status = SR_ST_INACTIVE; | |
177 | } | |
178 | ||
179 | return SR_OK; | |
180 | } | |
181 | ||
182 | static int hw_cleanup(void) | |
183 | { | |
184 | clear_instances(); | |
185 | ||
186 | return SR_OK; | |
187 | } | |
188 | ||
189 | static int config_set(int id, const void *value, const struct sr_dev_inst *sdi) | |
190 | { | |
191 | struct dev_context *devc; | |
192 | ||
193 | if (sdi->status != SR_ST_ACTIVE) { | |
194 | sr_err("Device inactive, can't set config options."); | |
195 | return SR_ERR; | |
196 | } | |
197 | ||
198 | devc = sdi->priv; | |
199 | ||
200 | switch (id) { | |
201 | case SR_CONF_LIMIT_SAMPLES: | |
202 | devc->limit_samples = *(const uint64_t *)value; | |
203 | sr_dbg("Setting sample limit to %" PRIu64 ".", | |
204 | devc->limit_samples); | |
205 | break; | |
206 | default: | |
207 | sr_err("Unknown hardware capability: %d.", id); | |
208 | return SR_ERR_ARG; | |
209 | } | |
210 | ||
211 | return SR_OK; | |
212 | } | |
213 | ||
214 | static int config_list(int key, const void **data, const struct sr_dev_inst *sdi) | |
215 | { | |
216 | ||
217 | (void)sdi; | |
218 | ||
219 | switch (key) { | |
220 | case SR_CONF_SCAN_OPTIONS: | |
221 | *data = hwopts; | |
222 | break; | |
223 | case SR_CONF_DEVICE_OPTIONS: | |
224 | *data = hwcaps; | |
225 | break; | |
226 | default: | |
227 | return SR_ERR_ARG; | |
228 | } | |
229 | ||
230 | return SR_OK; | |
231 | } | |
232 | ||
233 | static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi, | |
234 | void *cb_data) | |
235 | { | |
236 | struct sr_datafeed_packet packet; | |
237 | struct sr_datafeed_header header; | |
238 | struct dev_context *devc; | |
239 | ||
240 | devc = sdi->priv; | |
241 | devc->cb_data = cb_data; | |
242 | ||
243 | /* Send header packet to the session bus. */ | |
244 | sr_dbg("Sending SR_DF_HEADER."); | |
245 | packet.type = SR_DF_HEADER; | |
246 | packet.payload = (uint8_t *)&header; | |
247 | header.feed_version = 1; | |
248 | gettimeofday(&header.starttime, NULL); | |
249 | sr_session_send(devc->cb_data, &packet); | |
250 | ||
251 | /* Poll every 500ms, or whenever some data comes in. */ | |
252 | sr_source_add(devc->serial->fd, G_IO_IN, 500, | |
253 | tondaj_sl_814_receive_data, (void *)sdi); | |
254 | ||
255 | return SR_OK; | |
256 | } | |
257 | ||
258 | static int hw_dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data) | |
259 | { | |
260 | int ret, final_ret; | |
261 | struct sr_datafeed_packet packet; | |
262 | struct dev_context *devc; | |
263 | ||
264 | final_ret = SR_OK; | |
265 | ||
266 | if (sdi->status != SR_ST_ACTIVE) { | |
267 | sr_err("Device inactive, can't stop acquisition."); | |
268 | return SR_ERR; | |
269 | } | |
270 | ||
271 | devc = sdi->priv; | |
272 | ||
273 | if ((ret = sr_source_remove(devc->serial->fd)) < 0) { | |
274 | sr_err("Error removing source: %d.", ret); | |
275 | final_ret = SR_ERR; | |
276 | } | |
277 | ||
278 | if ((ret = hw_dev_close(sdi)) < 0) { | |
279 | sr_err("Error closing device: %d.", ret); | |
280 | final_ret = SR_ERR; | |
281 | } | |
282 | ||
283 | /* Send end packet to the session bus. */ | |
284 | sr_dbg("Sending SR_DF_END."); | |
285 | packet.type = SR_DF_END; | |
286 | sr_session_send(cb_data, &packet); | |
287 | ||
288 | return final_ret; | |
289 | } | |
290 | ||
291 | SR_PRIV struct sr_dev_driver tondaj_sl_814_driver_info = { | |
292 | .name = "tondaj-sl-814", | |
293 | .longname = "Tondaj SL-814", | |
294 | .api_version = 1, | |
295 | .init = hw_init, | |
296 | .cleanup = hw_cleanup, | |
297 | .scan = hw_scan, | |
298 | .dev_list = hw_dev_list, | |
299 | .dev_clear = clear_instances, | |
300 | .config_set = config_set, | |
301 | .config_list = config_list, | |
302 | .dev_open = hw_dev_open, | |
303 | .dev_close = hw_dev_close, | |
304 | .dev_acquisition_start = hw_dev_acquisition_start, | |
305 | .dev_acquisition_stop = hw_dev_acquisition_stop, | |
306 | .priv = NULL, | |
307 | }; |