2 * This file is part of the libsigrok project.
4 * Copyright (C) 2015 Bartosz Golaszewski <bgolaszewski@baylibre.com>
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.
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.
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/>.
22 SR_PRIV struct sr_dev_driver baylibre_acme_driver_info;
23 static struct sr_dev_driver *di = &baylibre_acme_driver_info;
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 SR_CONF_PROBE_FACTOR | SR_CONF_GET | SR_CONF_SET,
31 SR_CONF_POWER_OFF | SR_CONF_GET | SR_CONF_SET,
34 #define MAX_SAMPLE_RATE 500 /* In Hz */
36 static const uint64_t samplerates[] = {
38 SR_HZ(MAX_SAMPLE_RATE),
42 static int init(struct sr_context *sr_ctx)
44 return std_init(sr_ctx, di, LOG_PREFIX);
47 static GSList *scan(GSList *options)
49 struct drv_context *drvc;
50 struct dev_context *devc;
51 struct sr_dev_inst *sdi;
61 devc = g_malloc0(sizeof(struct dev_context));
62 devc->samplerate = SR_HZ(10);
64 sdi = g_malloc0(sizeof(struct sr_dev_inst));
65 sdi->status = SR_ST_INACTIVE;
66 sdi->model = g_strdup("Acme cape");
70 status = bl_acme_is_sane();
75 * Iterate over all ACME connectors and check if any probes
78 for (i = 0; i < MAX_PROBES; i++) {
80 * First check if there's an energy probe on this connector. If
81 * not, and we're already at the fifth probe - see if we can
82 * detect a temperature probe.
84 status = bl_acme_detect_probe(bl_acme_get_enrg_addr(i),
88 /* Energy probe detected. */
89 status = bl_acme_register_probe(sdi,
91 bl_acme_get_enrg_addr(i),
94 sr_err("Error registering power probe %d",
99 } else if (i >= TEMP_PRB_START_INDEX) {
100 status = bl_acme_detect_probe(bl_acme_get_temp_addr(i),
104 /* Temperature probe detected. */
105 status = bl_acme_register_probe(sdi,PROBE_TEMP,
106 bl_acme_get_temp_addr(i),
109 sr_err("Error registering temp "
110 "probe %d", PROBE_NUM(i));
118 devices = g_slist_append(devices, sdi);
119 drvc->instances = g_slist_append(drvc->instances, sdi);
125 sr_dev_inst_free(sdi);
130 static GSList *dev_list(void)
132 return ((struct drv_context *)(di->priv))->instances;
135 static int dev_clear(void)
137 return std_dev_clear(di, NULL);
140 static int dev_open(struct sr_dev_inst *sdi)
144 /* Nothing to do here. */
145 sdi->status = SR_ST_ACTIVE;
150 static int dev_close(struct sr_dev_inst *sdi)
154 /* Nothing to do here. */
155 sdi->status = SR_ST_INACTIVE;
160 static int cleanup(void)
167 static int config_get(uint32_t key, GVariant **data,
168 const struct sr_dev_inst *sdi,
169 const struct sr_channel_group *cg)
171 struct dev_context *devc;
180 case SR_CONF_LIMIT_SAMPLES:
181 *data = g_variant_new_uint64(devc->limit_samples);
183 case SR_CONF_LIMIT_MSEC:
184 *data = g_variant_new_uint64(devc->limit_msec);
186 case SR_CONF_SAMPLERATE:
187 *data = g_variant_new_uint64(devc->samplerate);
189 case SR_CONF_PROBE_FACTOR:
191 return SR_ERR_CHANNEL_GROUP;
192 ret = bl_acme_get_shunt(cg, &shunt);
194 *data = g_variant_new_uint64(shunt);
196 case SR_CONF_POWER_OFF:
198 return SR_ERR_CHANNEL_GROUP;
199 ret = bl_acme_read_power_state(cg, &power_off);
201 *data = g_variant_new_boolean(power_off);
210 static int config_set(uint32_t key, GVariant *data,
211 const struct sr_dev_inst *sdi,
212 const struct sr_channel_group *cg)
214 struct dev_context *devc;
218 if (sdi->status != SR_ST_ACTIVE)
219 return SR_ERR_DEV_CLOSED;
225 case SR_CONF_LIMIT_SAMPLES:
226 devc->limit_samples = g_variant_get_uint64(data);
227 devc->limit_msec = 0;
228 sr_dbg("Setting sample limit to %" PRIu64,
229 devc->limit_samples);
231 case SR_CONF_LIMIT_MSEC:
232 devc->limit_msec = g_variant_get_uint64(data) * 1000;
233 devc->limit_samples = 0;
234 sr_dbg("Setting time limit to %" PRIu64"ms", devc->limit_msec);
236 case SR_CONF_SAMPLERATE:
237 samplerate = g_variant_get_uint64(data);
238 if (samplerate > MAX_SAMPLE_RATE) {
239 sr_err("Maximum sample rate is %d", MAX_SAMPLE_RATE);
240 ret = SR_ERR_SAMPLERATE;
243 devc->samplerate = samplerate;
244 sr_dbg("Setting samplerate to %" PRIu64, devc->samplerate);
246 case SR_CONF_PROBE_FACTOR:
248 return SR_ERR_CHANNEL_GROUP;
249 ret = bl_acme_set_shunt(cg, g_variant_get_uint64(data));
251 case SR_CONF_POWER_OFF:
253 return SR_ERR_CHANNEL_GROUP;
254 ret = bl_acme_set_power_off(cg, g_variant_get_boolean(data));
263 static int config_list(uint32_t key, GVariant **data,
264 const struct sr_dev_inst *sdi,
265 const struct sr_channel_group *cg)
276 case SR_CONF_DEVICE_OPTIONS:
277 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
282 case SR_CONF_SAMPLERATE:
283 g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}"));
284 gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"),
286 ARRAY_SIZE(samplerates),
288 g_variant_builder_add(&gvb, "{sv}", "samplerate-steps", gvar);
289 *data = g_variant_builder_end(&gvb);
298 static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data)
300 struct dev_context *devc;
304 if (sdi->status != SR_ST_ACTIVE)
305 return SR_ERR_DEV_CLOSED;
308 devc->samples_read = 0;
310 if (pipe(devc->pipe_fds)) {
311 sr_err("Error setting up pipe");
315 devc->channel = g_io_channel_unix_new(devc->pipe_fds[0]);
316 g_io_channel_set_flags(devc->channel, G_IO_FLAG_NONBLOCK, NULL);
317 g_io_channel_set_encoding(devc->channel, NULL, NULL);
318 g_io_channel_set_buffered(devc->channel, FALSE);
320 sr_session_source_add_channel(sdi->session, devc->channel,
321 G_IO_IN | G_IO_ERR, 1,
322 bl_acme_receive_data, (void *)sdi);
324 /* Send header packet to the session bus. */
325 std_session_send_df_header(sdi, LOG_PREFIX);
326 devc->start_time = g_get_monotonic_time();
331 static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
333 struct sr_datafeed_packet packet;
334 struct dev_context *devc;
340 if (sdi->status != SR_ST_ACTIVE)
341 return SR_ERR_DEV_CLOSED;
343 sr_session_source_remove_channel(sdi->session, devc->channel);
344 g_io_channel_shutdown(devc->channel, FALSE, NULL);
345 g_io_channel_unref(devc->channel);
346 devc->channel = NULL;
348 /* Send last packet. */
349 packet.type = SR_DF_END;
350 sr_session_send(sdi, &packet);
355 SR_PRIV struct sr_dev_driver baylibre_acme_driver_info = {
356 .name = "baylibre-acme",
357 .longname = "BayLibre ACME (Another Cute Measurement Equipment)",
362 .dev_list = dev_list,
363 .dev_clear = dev_clear,
364 .config_get = config_get,
365 .config_set = config_set,
366 .config_list = config_list,
367 .dev_open = dev_open,
368 .dev_close = dev_close,
369 .dev_acquisition_start = dev_acquisition_start,
370 .dev_acquisition_stop = dev_acquisition_stop,