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->vendor = g_strdup("BayLibre");
67 sdi->model = g_strdup("ACME");
71 status = bl_acme_is_sane();
76 * Iterate over all ACME connectors and check if any probes
79 for (i = 0; i < MAX_PROBES; i++) {
81 * First check if there's an energy probe on this connector. If
82 * not, and we're already at the fifth probe - see if we can
83 * detect a temperature probe.
85 status = bl_acme_detect_probe(bl_acme_get_enrg_addr(i),
86 PROBE_NUM(i), ENRG_PROBE_NAME);
88 /* Energy probe detected. */
89 status = bl_acme_register_probe(sdi, PROBE_ENRG,
90 bl_acme_get_enrg_addr(i), PROBE_NUM(i));
92 sr_err("Error registering power probe %d",
96 } else if (i >= TEMP_PRB_START_INDEX) {
97 status = bl_acme_detect_probe(bl_acme_get_temp_addr(i),
98 PROBE_NUM(i), TEMP_PROBE_NAME);
100 /* Temperature probe detected. */
101 status = bl_acme_register_probe(sdi,PROBE_TEMP,
102 bl_acme_get_temp_addr(i), PROBE_NUM(i));
104 sr_err("Error registering temp "
105 "probe %d", PROBE_NUM(i));
113 * Let's assume there's no ACME device present if no probe
114 * has been registered.
116 if (sdi->channel_groups == NULL)
119 devices = g_slist_append(devices, sdi);
120 drvc->instances = g_slist_append(drvc->instances, sdi);
126 sr_dev_inst_free(sdi);
131 static GSList *dev_list(void)
133 return ((struct drv_context *)(di->priv))->instances;
136 static int dev_clear(void)
138 return std_dev_clear(di, NULL);
141 static int dev_open(struct sr_dev_inst *sdi)
145 /* Nothing to do here. */
146 sdi->status = SR_ST_ACTIVE;
151 static int dev_close(struct sr_dev_inst *sdi)
155 /* Nothing to do here. */
156 sdi->status = SR_ST_INACTIVE;
161 static int cleanup(void)
168 static int config_get(uint32_t key, GVariant **data,
169 const struct sr_dev_inst *sdi,
170 const struct sr_channel_group *cg)
172 struct dev_context *devc;
181 case SR_CONF_LIMIT_SAMPLES:
182 *data = g_variant_new_uint64(devc->limit_samples);
184 case SR_CONF_LIMIT_MSEC:
185 *data = g_variant_new_uint64(devc->limit_msec);
187 case SR_CONF_SAMPLERATE:
188 *data = g_variant_new_uint64(devc->samplerate);
190 case SR_CONF_PROBE_FACTOR:
192 return SR_ERR_CHANNEL_GROUP;
193 ret = bl_acme_get_shunt(cg, &shunt);
195 *data = g_variant_new_uint64(shunt);
197 case SR_CONF_POWER_OFF:
199 return SR_ERR_CHANNEL_GROUP;
200 ret = bl_acme_read_power_state(cg, &power_off);
202 *data = g_variant_new_boolean(power_off);
211 static int config_set(uint32_t key, GVariant *data,
212 const struct sr_dev_inst *sdi,
213 const struct sr_channel_group *cg)
215 struct dev_context *devc;
219 if (sdi->status != SR_ST_ACTIVE)
220 return SR_ERR_DEV_CLOSED;
226 case SR_CONF_LIMIT_SAMPLES:
227 devc->limit_samples = g_variant_get_uint64(data);
228 devc->limit_msec = 0;
229 sr_dbg("Setting sample limit to %" PRIu64, 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,
278 devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
280 case SR_CONF_SAMPLERATE:
281 g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}"));
282 gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"),
283 samplerates, ARRAY_SIZE(samplerates), sizeof(uint64_t));
284 g_variant_builder_add(&gvb, "{sv}", "samplerate-steps", gvar);
285 *data = g_variant_builder_end(&gvb);
294 static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data)
296 struct dev_context *devc;
300 if (sdi->status != SR_ST_ACTIVE)
301 return SR_ERR_DEV_CLOSED;
304 devc->samples_read = 0;
306 if (pipe(devc->pipe_fds)) {
307 sr_err("Error setting up pipe");
311 devc->channel = g_io_channel_unix_new(devc->pipe_fds[0]);
312 g_io_channel_set_flags(devc->channel, G_IO_FLAG_NONBLOCK, NULL);
313 g_io_channel_set_encoding(devc->channel, NULL, NULL);
314 g_io_channel_set_buffered(devc->channel, FALSE);
316 sr_session_source_add_channel(sdi->session, devc->channel,
317 G_IO_IN | G_IO_ERR, 1, bl_acme_receive_data, (void *)sdi);
319 /* Send header packet to the session bus. */
320 std_session_send_df_header(sdi, LOG_PREFIX);
321 devc->start_time = g_get_monotonic_time();
326 static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
328 struct sr_datafeed_packet packet;
329 struct dev_context *devc;
335 if (sdi->status != SR_ST_ACTIVE)
336 return SR_ERR_DEV_CLOSED;
338 sr_session_source_remove_channel(sdi->session, devc->channel);
339 g_io_channel_shutdown(devc->channel, FALSE, NULL);
340 g_io_channel_unref(devc->channel);
341 devc->channel = NULL;
343 /* Send last packet. */
344 packet.type = SR_DF_END;
345 sr_session_send(sdi, &packet);
350 SR_PRIV struct sr_dev_driver baylibre_acme_driver_info = {
351 .name = "baylibre-acme",
352 .longname = "BayLibre ACME (Another Cute Measurement Equipment)",
357 .dev_list = dev_list,
358 .dev_clear = dev_clear,
359 .config_get = config_get,
360 .config_set = config_set,
361 .config_list = config_list,
362 .dev_open = dev_open,
363 .dev_close = dev_close,
364 .dev_acquisition_start = dev_acquisition_start,
365 .dev_acquisition_stop = dev_acquisition_stop,