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),
85 PROBE_NUM(i), ENRG_PROBE_NAME);
87 /* Energy probe detected. */
88 status = bl_acme_register_probe(sdi, PROBE_ENRG,
89 bl_acme_get_enrg_addr(i), PROBE_NUM(i));
91 sr_err("Error registering power probe %d",
95 } else if (i >= TEMP_PRB_START_INDEX) {
96 status = bl_acme_detect_probe(bl_acme_get_temp_addr(i),
97 PROBE_NUM(i), TEMP_PROBE_NAME);
99 /* Temperature probe detected. */
100 status = bl_acme_register_probe(sdi,PROBE_TEMP,
101 bl_acme_get_temp_addr(i), PROBE_NUM(i));
103 sr_err("Error registering temp "
104 "probe %d", PROBE_NUM(i));
111 devices = g_slist_append(devices, sdi);
112 drvc->instances = g_slist_append(drvc->instances, sdi);
118 sr_dev_inst_free(sdi);
123 static GSList *dev_list(void)
125 return ((struct drv_context *)(di->priv))->instances;
128 static int dev_clear(void)
130 return std_dev_clear(di, NULL);
133 static int dev_open(struct sr_dev_inst *sdi)
137 /* Nothing to do here. */
138 sdi->status = SR_ST_ACTIVE;
143 static int dev_close(struct sr_dev_inst *sdi)
147 /* Nothing to do here. */
148 sdi->status = SR_ST_INACTIVE;
153 static int cleanup(void)
160 static int config_get(uint32_t key, GVariant **data,
161 const struct sr_dev_inst *sdi,
162 const struct sr_channel_group *cg)
164 struct dev_context *devc;
173 case SR_CONF_LIMIT_SAMPLES:
174 *data = g_variant_new_uint64(devc->limit_samples);
176 case SR_CONF_LIMIT_MSEC:
177 *data = g_variant_new_uint64(devc->limit_msec);
179 case SR_CONF_SAMPLERATE:
180 *data = g_variant_new_uint64(devc->samplerate);
182 case SR_CONF_PROBE_FACTOR:
184 return SR_ERR_CHANNEL_GROUP;
185 ret = bl_acme_get_shunt(cg, &shunt);
187 *data = g_variant_new_uint64(shunt);
189 case SR_CONF_POWER_OFF:
191 return SR_ERR_CHANNEL_GROUP;
192 ret = bl_acme_read_power_state(cg, &power_off);
194 *data = g_variant_new_boolean(power_off);
203 static int config_set(uint32_t key, GVariant *data,
204 const struct sr_dev_inst *sdi,
205 const struct sr_channel_group *cg)
207 struct dev_context *devc;
211 if (sdi->status != SR_ST_ACTIVE)
212 return SR_ERR_DEV_CLOSED;
218 case SR_CONF_LIMIT_SAMPLES:
219 devc->limit_samples = g_variant_get_uint64(data);
220 devc->limit_msec = 0;
221 sr_dbg("Setting sample limit to %" PRIu64, devc->limit_samples);
223 case SR_CONF_LIMIT_MSEC:
224 devc->limit_msec = g_variant_get_uint64(data) * 1000;
225 devc->limit_samples = 0;
226 sr_dbg("Setting time limit to %" PRIu64"ms", devc->limit_msec);
228 case SR_CONF_SAMPLERATE:
229 samplerate = g_variant_get_uint64(data);
230 if (samplerate > MAX_SAMPLE_RATE) {
231 sr_err("Maximum sample rate is %d", MAX_SAMPLE_RATE);
232 ret = SR_ERR_SAMPLERATE;
235 devc->samplerate = samplerate;
236 sr_dbg("Setting samplerate to %" PRIu64, devc->samplerate);
238 case SR_CONF_PROBE_FACTOR:
240 return SR_ERR_CHANNEL_GROUP;
241 ret = bl_acme_set_shunt(cg, g_variant_get_uint64(data));
243 case SR_CONF_POWER_OFF:
245 return SR_ERR_CHANNEL_GROUP;
246 ret = bl_acme_set_power_off(cg, g_variant_get_boolean(data));
255 static int config_list(uint32_t key, GVariant **data,
256 const struct sr_dev_inst *sdi,
257 const struct sr_channel_group *cg)
268 case SR_CONF_DEVICE_OPTIONS:
269 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
270 devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
272 case SR_CONF_SAMPLERATE:
273 g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}"));
274 gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"),
275 samplerates, ARRAY_SIZE(samplerates), sizeof(uint64_t));
276 g_variant_builder_add(&gvb, "{sv}", "samplerate-steps", gvar);
277 *data = g_variant_builder_end(&gvb);
286 static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data)
288 struct dev_context *devc;
292 if (sdi->status != SR_ST_ACTIVE)
293 return SR_ERR_DEV_CLOSED;
296 devc->samples_read = 0;
298 if (pipe(devc->pipe_fds)) {
299 sr_err("Error setting up pipe");
303 devc->channel = g_io_channel_unix_new(devc->pipe_fds[0]);
304 g_io_channel_set_flags(devc->channel, G_IO_FLAG_NONBLOCK, NULL);
305 g_io_channel_set_encoding(devc->channel, NULL, NULL);
306 g_io_channel_set_buffered(devc->channel, FALSE);
308 sr_session_source_add_channel(sdi->session, devc->channel,
309 G_IO_IN | G_IO_ERR, 1, bl_acme_receive_data, (void *)sdi);
311 /* Send header packet to the session bus. */
312 std_session_send_df_header(sdi, LOG_PREFIX);
313 devc->start_time = g_get_monotonic_time();
318 static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
320 struct sr_datafeed_packet packet;
321 struct dev_context *devc;
327 if (sdi->status != SR_ST_ACTIVE)
328 return SR_ERR_DEV_CLOSED;
330 sr_session_source_remove_channel(sdi->session, devc->channel);
331 g_io_channel_shutdown(devc->channel, FALSE, NULL);
332 g_io_channel_unref(devc->channel);
333 devc->channel = NULL;
335 /* Send last packet. */
336 packet.type = SR_DF_END;
337 sr_session_send(sdi, &packet);
342 SR_PRIV struct sr_dev_driver baylibre_acme_driver_info = {
343 .name = "baylibre-acme",
344 .longname = "BayLibre ACME (Another Cute Measurement Equipment)",
349 .dev_list = dev_list,
350 .dev_clear = dev_clear,
351 .config_get = config_get,
352 .config_set = config_set,
353 .config_list = config_list,
354 .dev_open = dev_open,
355 .dev_close = dev_close,
356 .dev_acquisition_start = dev_acquisition_start,
357 .dev_acquisition_stop = dev_acquisition_stop,