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dfaee1de BG |
1 | /* |
2 | * This file is part of the libsigrok project. | |
3 | * | |
4 | * Copyright (C) 2015 Bartosz Golaszewski <bgolaszewski@baylibre.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 | ||
20 | #include "protocol.h" | |
21 | ||
22 | SR_PRIV struct sr_dev_driver baylibre_acme_driver_info; | |
23 | static struct sr_dev_driver *di = &baylibre_acme_driver_info; | |
24 | ||
6b80b80d BG |
25 | static const uint32_t devopts[] = { |
26 | SR_CONF_CONTINUOUS | SR_CONF_SET, | |
27 | SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET, | |
28 | SR_CONF_LIMIT_MSEC | SR_CONF_GET | SR_CONF_SET, | |
29 | SR_CONF_SAMPLERATE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
30 | }; | |
31 | ||
32 | #define MAX_SAMPLE_RATE 500 /* In Hz */ | |
33 | ||
34 | static const uint64_t samplerates[] = { | |
35 | SR_HZ(1), | |
36 | SR_HZ(MAX_SAMPLE_RATE), | |
37 | SR_HZ(1), | |
38 | }; | |
39 | ||
dfaee1de BG |
40 | static int init(struct sr_context *sr_ctx) |
41 | { | |
42 | return std_init(sr_ctx, di, LOG_PREFIX); | |
43 | } | |
44 | ||
45 | static GSList *scan(GSList *options) | |
46 | { | |
47 | struct drv_context *drvc; | |
6b80b80d BG |
48 | struct dev_context *devc; |
49 | struct sr_dev_inst *sdi; | |
dfaee1de | 50 | GSList *devices; |
6b80b80d BG |
51 | gboolean status; |
52 | int i; | |
dfaee1de BG |
53 | |
54 | (void)options; | |
55 | ||
dfaee1de | 56 | drvc = di->priv; |
6b80b80d | 57 | devices = NULL; |
dfaee1de | 58 | |
6b80b80d BG |
59 | devc = g_malloc0(sizeof(struct dev_context)); |
60 | devc->samplerate = SR_HZ(10); | |
61 | ||
62 | sdi = g_malloc0(sizeof(struct sr_dev_inst)); | |
63 | sdi->status = SR_ST_INACTIVE; | |
64 | sdi->model = g_strdup("Acme cape"); | |
65 | sdi->driver = di; | |
66 | sdi->priv = devc; | |
67 | ||
68 | status = bl_acme_is_sane(); | |
69 | if (!status) | |
70 | goto err_out; | |
71 | ||
72 | /* | |
73 | * Iterate over all ACME connectors and check if any probes | |
74 | * are present. | |
75 | */ | |
76 | for (i = 0; i < MAX_PROBES; i++) { | |
77 | /* | |
78 | * First check if there's an energy probe on this connector. If | |
79 | * not, and we're already at the fifth probe - see if we can | |
80 | * detect a temperature probe. | |
81 | */ | |
82 | status = bl_acme_detect_probe(bl_acme_get_enrg_addr(i), | |
83 | PROBE_NUM(i), | |
84 | ENRG_PROBE_NAME); | |
85 | if (status) { | |
86 | /* Energy probe detected. */ | |
87 | status = bl_acme_register_probe(sdi, | |
88 | PROBE_ENRG, | |
89 | bl_acme_get_enrg_addr(i), | |
90 | PROBE_NUM(i)); | |
91 | if (!status) { | |
92 | sr_err("Error registering power probe %d", | |
93 | PROBE_NUM(i)); | |
94 | continue; | |
95 | } | |
96 | ||
97 | } else if (i >= TEMP_PRB_START_INDEX) { | |
98 | status = bl_acme_detect_probe(bl_acme_get_temp_addr(i), | |
99 | PROBE_NUM(i), | |
100 | TEMP_PROBE_NAME); | |
101 | if (status) { | |
102 | /* Temperature probe detected. */ | |
103 | status = bl_acme_register_probe(sdi,PROBE_TEMP, | |
104 | bl_acme_get_temp_addr(i), | |
105 | PROBE_NUM(i)); | |
106 | if (!status) { | |
107 | sr_err("Error registering temp " | |
108 | "probe %d", PROBE_NUM(i)); | |
109 | continue; | |
110 | } | |
111 | } | |
112 | ||
113 | } | |
114 | } | |
115 | ||
116 | devices = g_slist_append(devices, sdi); | |
117 | drvc->instances = g_slist_append(drvc->instances, sdi); | |
dfaee1de BG |
118 | |
119 | return devices; | |
6b80b80d BG |
120 | |
121 | err_out: | |
122 | g_free(devc); | |
123 | sr_dev_inst_free(sdi); | |
124 | ||
125 | return NULL; | |
dfaee1de BG |
126 | } |
127 | ||
128 | static GSList *dev_list(void) | |
129 | { | |
130 | return ((struct drv_context *)(di->priv))->instances; | |
131 | } | |
132 | ||
133 | static int dev_clear(void) | |
134 | { | |
135 | return std_dev_clear(di, NULL); | |
136 | } | |
137 | ||
138 | static int dev_open(struct sr_dev_inst *sdi) | |
139 | { | |
140 | (void)sdi; | |
141 | ||
6b80b80d | 142 | /* Nothing to do here. */ |
dfaee1de BG |
143 | sdi->status = SR_ST_ACTIVE; |
144 | ||
145 | return SR_OK; | |
146 | } | |
147 | ||
148 | static int dev_close(struct sr_dev_inst *sdi) | |
149 | { | |
150 | (void)sdi; | |
151 | ||
6b80b80d | 152 | /* Nothing to do here. */ |
dfaee1de BG |
153 | sdi->status = SR_ST_INACTIVE; |
154 | ||
155 | return SR_OK; | |
156 | } | |
157 | ||
158 | static int cleanup(void) | |
159 | { | |
160 | dev_clear(); | |
161 | ||
dfaee1de BG |
162 | return SR_OK; |
163 | } | |
164 | ||
6b80b80d BG |
165 | static int config_get(uint32_t key, GVariant **data, |
166 | const struct sr_dev_inst *sdi, | |
167 | const struct sr_channel_group *cg) | |
dfaee1de | 168 | { |
6b80b80d | 169 | struct dev_context *devc; |
dfaee1de BG |
170 | int ret; |
171 | ||
dfaee1de BG |
172 | (void)cg; |
173 | ||
6b80b80d BG |
174 | devc = sdi->priv; |
175 | ||
dfaee1de BG |
176 | ret = SR_OK; |
177 | switch (key) { | |
6b80b80d BG |
178 | case SR_CONF_LIMIT_SAMPLES: |
179 | *data = g_variant_new_uint64(devc->limit_samples); | |
180 | break; | |
181 | case SR_CONF_LIMIT_MSEC: | |
182 | *data = g_variant_new_uint64(devc->limit_msec); | |
183 | break; | |
184 | case SR_CONF_SAMPLERATE: | |
185 | *data = g_variant_new_uint64(devc->samplerate); | |
186 | break; | |
dfaee1de BG |
187 | default: |
188 | return SR_ERR_NA; | |
189 | } | |
190 | ||
191 | return ret; | |
192 | } | |
193 | ||
6b80b80d BG |
194 | static int config_set(uint32_t key, GVariant *data, |
195 | const struct sr_dev_inst *sdi, | |
196 | const struct sr_channel_group *cg) | |
dfaee1de | 197 | { |
6b80b80d BG |
198 | struct dev_context *devc; |
199 | uint64_t samplerate; | |
dfaee1de BG |
200 | int ret; |
201 | ||
dfaee1de BG |
202 | (void)cg; |
203 | ||
204 | if (sdi->status != SR_ST_ACTIVE) | |
205 | return SR_ERR_DEV_CLOSED; | |
206 | ||
6b80b80d BG |
207 | devc = sdi->priv; |
208 | ||
dfaee1de BG |
209 | ret = SR_OK; |
210 | switch (key) { | |
6b80b80d BG |
211 | case SR_CONF_LIMIT_SAMPLES: |
212 | devc->limit_samples = g_variant_get_uint64(data); | |
213 | devc->limit_msec = 0; | |
214 | sr_dbg("Setting sample limit to %" PRIu64, | |
215 | devc->limit_samples); | |
216 | break; | |
217 | case SR_CONF_LIMIT_MSEC: | |
218 | devc->limit_msec = g_variant_get_uint64(data) * 1000; | |
219 | devc->limit_samples = 0; | |
220 | sr_dbg("Setting time limit to %" PRIu64"ms", devc->limit_msec); | |
221 | break; | |
222 | case SR_CONF_SAMPLERATE: | |
223 | samplerate = g_variant_get_uint64(data); | |
224 | if (samplerate > MAX_SAMPLE_RATE) { | |
225 | sr_err("Maximum sample rate is %d", MAX_SAMPLE_RATE); | |
226 | ret = SR_ERR_SAMPLERATE; | |
227 | break; | |
228 | } | |
229 | devc->samplerate = samplerate; | |
230 | sr_dbg("Setting samplerate to %" PRIu64, devc->samplerate); | |
231 | break; | |
dfaee1de BG |
232 | default: |
233 | ret = SR_ERR_NA; | |
234 | } | |
235 | ||
236 | return ret; | |
237 | } | |
238 | ||
6b80b80d BG |
239 | static int config_list(uint32_t key, GVariant **data, |
240 | const struct sr_dev_inst *sdi, | |
241 | const struct sr_channel_group *cg) | |
dfaee1de | 242 | { |
6b80b80d BG |
243 | GVariant *gvar; |
244 | GVariantBuilder gvb; | |
dfaee1de BG |
245 | int ret; |
246 | ||
247 | (void)sdi; | |
dfaee1de BG |
248 | (void)cg; |
249 | ||
250 | ret = SR_OK; | |
251 | switch (key) { | |
6b80b80d BG |
252 | case SR_CONF_DEVICE_OPTIONS: |
253 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
254 | devopts, | |
255 | ARRAY_SIZE(devopts), | |
256 | sizeof(uint32_t)); | |
257 | break; | |
258 | case SR_CONF_SAMPLERATE: | |
259 | g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}")); | |
260 | gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"), | |
261 | samplerates, | |
262 | ARRAY_SIZE(samplerates), | |
263 | sizeof(uint64_t)); | |
264 | g_variant_builder_add(&gvb, "{sv}", "samplerate-steps", gvar); | |
265 | *data = g_variant_builder_end(&gvb); | |
266 | break; | |
dfaee1de BG |
267 | default: |
268 | return SR_ERR_NA; | |
269 | } | |
270 | ||
271 | return ret; | |
272 | } | |
273 | ||
6b80b80d | 274 | static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data) |
dfaee1de | 275 | { |
6b80b80d BG |
276 | struct dev_context *devc; |
277 | ||
dfaee1de BG |
278 | (void)cb_data; |
279 | ||
280 | if (sdi->status != SR_ST_ACTIVE) | |
281 | return SR_ERR_DEV_CLOSED; | |
282 | ||
6b80b80d BG |
283 | devc = sdi->priv; |
284 | devc->samples_read = 0; | |
285 | ||
286 | if (pipe(devc->pipe_fds)) { | |
287 | sr_err("Error setting up pipe"); | |
288 | return SR_ERR; | |
289 | } | |
290 | ||
291 | devc->channel = g_io_channel_unix_new(devc->pipe_fds[0]); | |
292 | g_io_channel_set_flags(devc->channel, G_IO_FLAG_NONBLOCK, NULL); | |
293 | g_io_channel_set_encoding(devc->channel, NULL, NULL); | |
294 | g_io_channel_set_buffered(devc->channel, FALSE); | |
295 | ||
296 | sr_session_source_add_channel(sdi->session, devc->channel, | |
297 | G_IO_IN | G_IO_ERR, 1, | |
298 | bl_acme_receive_data, (void *)sdi); | |
299 | ||
300 | /* Send header packet to the session bus. */ | |
301 | std_session_send_df_header(sdi, LOG_PREFIX); | |
302 | devc->start_time = g_get_monotonic_time(); | |
dfaee1de BG |
303 | |
304 | return SR_OK; | |
305 | } | |
306 | ||
307 | static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data) | |
308 | { | |
6b80b80d BG |
309 | struct sr_datafeed_packet packet; |
310 | struct dev_context *devc; | |
311 | ||
dfaee1de BG |
312 | (void)cb_data; |
313 | ||
6b80b80d BG |
314 | devc = sdi->priv; |
315 | ||
dfaee1de BG |
316 | if (sdi->status != SR_ST_ACTIVE) |
317 | return SR_ERR_DEV_CLOSED; | |
318 | ||
6b80b80d BG |
319 | sr_session_source_remove_channel(sdi->session, devc->channel); |
320 | g_io_channel_shutdown(devc->channel, FALSE, NULL); | |
321 | g_io_channel_unref(devc->channel); | |
322 | devc->channel = NULL; | |
323 | ||
324 | /* Send last packet. */ | |
325 | packet.type = SR_DF_END; | |
326 | sr_session_send(sdi, &packet); | |
dfaee1de BG |
327 | |
328 | return SR_OK; | |
329 | } | |
330 | ||
331 | SR_PRIV struct sr_dev_driver baylibre_acme_driver_info = { | |
332 | .name = "baylibre-acme", | |
6b80b80d | 333 | .longname = "BayLibre ACME (Another Cute Measurement Equipment)", |
dfaee1de BG |
334 | .api_version = 1, |
335 | .init = init, | |
336 | .cleanup = cleanup, | |
337 | .scan = scan, | |
338 | .dev_list = dev_list, | |
339 | .dev_clear = dev_clear, | |
340 | .config_get = config_get, | |
341 | .config_set = config_set, | |
342 | .config_list = config_list, | |
343 | .dev_open = dev_open, | |
344 | .dev_close = dev_close, | |
345 | .dev_acquisition_start = dev_acquisition_start, | |
346 | .dev_acquisition_stop = dev_acquisition_stop, | |
347 | .priv = NULL, | |
348 | }; |