* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
+#include <config.h>
#include "protocol.h"
+#include <time.h>
+#include <sys/timerfd.h>
-SR_PRIV struct sr_dev_driver baylibre_acme_driver_info;
-static struct sr_dev_driver *di = &baylibre_acme_driver_info;
+static const uint32_t drvopts[] = {
+ SR_CONF_THERMOMETER,
+ SR_CONF_POWERMETER,
+};
static const uint32_t devopts[] = {
- SR_CONF_CONTINUOUS | SR_CONF_SET,
+ SR_CONF_CONTINUOUS,
SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET,
SR_CONF_LIMIT_MSEC | SR_CONF_GET | SR_CONF_SET,
SR_CONF_SAMPLERATE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
- SR_CONF_PROBE_FACTOR | SR_CONF_GET | SR_CONF_SET,
- SR_CONF_POWER_OFF | SR_CONF_GET | SR_CONF_SET,
};
+/*
+ * Currently there are two channel-group/probe options for ACME:
+ * - SR_CONF_PROBE_FACTOR - allows to modify current shunt resistance
+ * calibration
+ * - SR_CONF_POWER_OFF - allows to remotely cut-off/restore power to
+ * measured devices
+ *
+ * They are not static - we have to check each probe's capabilities in
+ * config_list().
+ */
+#define MAX_DEVOPTS_CG 2
+#define HAS_PROBE_FACTOR (SR_CONF_PROBE_FACTOR | SR_CONF_GET | SR_CONF_SET)
+#define HAS_POWER_OFF (SR_CONF_POWER_OFF | SR_CONF_GET | SR_CONF_SET)
+
#define MAX_SAMPLE_RATE 500 /* In Hz */
static const uint64_t samplerates[] = {
SR_HZ(1),
};
-static int init(struct sr_context *sr_ctx)
+static GSList *scan(struct sr_dev_driver *di, GSList *options)
{
- return std_init(sr_ctx, di, LOG_PREFIX);
-}
-
-static GSList *scan(GSList *options)
-{
- struct drv_context *drvc;
struct dev_context *devc;
struct sr_dev_inst *sdi;
- GSList *devices;
gboolean status;
int i;
(void)options;
- drvc = di->priv;
- devices = NULL;
-
devc = g_malloc0(sizeof(struct dev_context));
devc->samplerate = SR_HZ(10);
sdi->status = SR_ST_INACTIVE;
sdi->vendor = g_strdup("BayLibre");
sdi->model = g_strdup("ACME");
- sdi->driver = di;
sdi->priv = devc;
status = bl_acme_is_sane();
* Let's assume there's no ACME device present if no probe
* has been registered.
*/
- if (sdi->channel_groups == NULL)
+ if (!sdi->channel_groups)
goto err_out;
- devices = g_slist_append(devices, sdi);
- drvc->instances = g_slist_append(drvc->instances, sdi);
-
- return devices;
+ return std_scan_complete(di, g_slist_append(NULL, sdi));
err_out:
g_free(devc);
return NULL;
}
-static GSList *dev_list(void)
-{
- return ((struct drv_context *)(di->priv))->instances;
-}
-
-static int dev_clear(void)
-{
- return std_dev_clear(di, NULL);
-}
-
-static int dev_open(struct sr_dev_inst *sdi)
-{
- (void)sdi;
-
- /* Nothing to do here. */
- sdi->status = SR_ST_ACTIVE;
-
- return SR_OK;
-}
-
-static int dev_close(struct sr_dev_inst *sdi)
-{
- (void)sdi;
-
- /* Nothing to do here. */
- sdi->status = SR_ST_INACTIVE;
-
- return SR_OK;
-}
-
-static int cleanup(void)
-{
- dev_clear();
-
- return SR_OK;
-}
-
static int config_get(uint32_t key, GVariant **data,
- const struct sr_dev_inst *sdi,
- const struct sr_channel_group *cg)
+ const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
{
struct dev_context *devc;
int ret;
devc = sdi->priv;
ret = SR_OK;
+
switch (key) {
case SR_CONF_LIMIT_SAMPLES:
- *data = g_variant_new_uint64(devc->limit_samples);
- break;
case SR_CONF_LIMIT_MSEC:
- *data = g_variant_new_uint64(devc->limit_msec);
- break;
+ return sr_sw_limits_config_get(&devc->limits, key, data);
case SR_CONF_SAMPLERATE:
*data = g_variant_new_uint64(devc->samplerate);
break;
}
static int config_set(uint32_t key, GVariant *data,
- const struct sr_dev_inst *sdi,
- const struct sr_channel_group *cg)
+ const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
{
struct dev_context *devc;
uint64_t samplerate;
- int ret;
-
- if (sdi->status != SR_ST_ACTIVE)
- return SR_ERR_DEV_CLOSED;
devc = sdi->priv;
- ret = SR_OK;
switch (key) {
case SR_CONF_LIMIT_SAMPLES:
- devc->limit_samples = g_variant_get_uint64(data);
- devc->limit_msec = 0;
- sr_dbg("Setting sample limit to %" PRIu64, devc->limit_samples);
- break;
case SR_CONF_LIMIT_MSEC:
- devc->limit_msec = g_variant_get_uint64(data) * 1000;
- devc->limit_samples = 0;
- sr_dbg("Setting time limit to %" PRIu64"ms", devc->limit_msec);
- break;
+ return sr_sw_limits_config_set(&devc->limits, key, data);
case SR_CONF_SAMPLERATE:
samplerate = g_variant_get_uint64(data);
if (samplerate > MAX_SAMPLE_RATE) {
sr_err("Maximum sample rate is %d", MAX_SAMPLE_RATE);
- ret = SR_ERR_SAMPLERATE;
- break;
+ return SR_ERR_SAMPLERATE;
}
devc->samplerate = samplerate;
- sr_dbg("Setting samplerate to %" PRIu64, devc->samplerate);
+ bl_acme_maybe_set_update_interval(sdi, samplerate);
break;
case SR_CONF_PROBE_FACTOR:
if (!cg)
return SR_ERR_CHANNEL_GROUP;
- ret = bl_acme_set_shunt(cg, g_variant_get_uint64(data));
- break;
+ return bl_acme_set_shunt(cg, g_variant_get_uint64(data));
case SR_CONF_POWER_OFF:
if (!cg)
return SR_ERR_CHANNEL_GROUP;
- ret = bl_acme_set_power_off(cg, g_variant_get_boolean(data));
- break;
+ return bl_acme_set_power_off(cg, g_variant_get_boolean(data));
default:
- ret = SR_ERR_NA;
+ return SR_ERR_NA;
}
- return ret;
+ return SR_OK;
}
static int config_list(uint32_t key, GVariant **data,
- const struct sr_dev_inst *sdi,
- const struct sr_channel_group *cg)
+ const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
{
- GVariant *gvar;
- GVariantBuilder gvb;
- int ret;
+ uint32_t devopts_cg[MAX_DEVOPTS_CG];
+ int num_devopts_cg = 0;
+
+ if (!cg) {
+ switch (key) {
+ case SR_CONF_DEVICE_OPTIONS:
+ return STD_CONFIG_LIST(key, data, sdi, cg, NO_OPTS, drvopts, devopts);
+ case SR_CONF_SAMPLERATE:
+ *data = std_gvar_samplerates_steps(ARRAY_AND_SIZE(samplerates));
+ break;
+ default:
+ return SR_ERR_NA;
+ }
+ } else {
+ switch (key) {
+ case SR_CONF_DEVICE_OPTIONS:
+ if (bl_acme_get_probe_type(cg) == PROBE_ENRG)
+ devopts_cg[num_devopts_cg++] = HAS_PROBE_FACTOR;
+ if (bl_acme_probe_has_pws(cg))
+ devopts_cg[num_devopts_cg++] = HAS_POWER_OFF;
+
+ *data = std_gvar_array_u32(devopts_cg, num_devopts_cg);
+ break;
+ default:
+ return SR_ERR_NA;
+ }
+ }
- (void)sdi;
- (void)cg;
+ return SR_OK;
+}
- ret = SR_OK;
- switch (key) {
- case SR_CONF_DEVICE_OPTIONS:
- *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
- devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
- break;
- case SR_CONF_SAMPLERATE:
- g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}"));
- gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"),
- samplerates, ARRAY_SIZE(samplerates), sizeof(uint64_t));
- g_variant_builder_add(&gvb, "{sv}", "samplerate-steps", gvar);
- *data = g_variant_builder_end(&gvb);
- break;
- default:
- return SR_ERR_NA;
+static void dev_acquisition_close(const struct sr_dev_inst *sdi)
+{
+ GSList *chl;
+ struct sr_channel *ch;
+
+ for (chl = sdi->channels; chl; chl = chl->next) {
+ ch = chl->data;
+ bl_acme_close_channel(ch);
}
+}
- return ret;
+static int dev_acquisition_open(const struct sr_dev_inst *sdi)
+{
+ GSList *chl;
+ struct sr_channel *ch;
+
+ for (chl = sdi->channels; chl; chl = chl->next) {
+ ch = chl->data;
+ if (bl_acme_open_channel(ch)) {
+ sr_err("Error opening channel %s", ch->name);
+ dev_acquisition_close(sdi);
+ return SR_ERR;
+ }
+ }
+
+ return 0;
}
-static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data)
+static int dev_acquisition_start(const struct sr_dev_inst *sdi)
{
struct dev_context *devc;
+ struct itimerspec tspec = {
+ .it_interval = { 0, 0 },
+ .it_value = { 0, 0 }
+ };
- (void)cb_data;
-
- if (sdi->status != SR_ST_ACTIVE)
- return SR_ERR_DEV_CLOSED;
+ if (dev_acquisition_open(sdi))
+ return SR_ERR;
devc = sdi->priv;
- devc->samples_read = 0;
+ devc->samples_missed = 0;
+ devc->timer_fd = timerfd_create(CLOCK_MONOTONIC, 0);
+ if (devc->timer_fd < 0) {
+ sr_err("Error creating timer fd");
+ return SR_ERR;
+ }
- if (pipe(devc->pipe_fds)) {
- sr_err("Error setting up pipe");
+ tspec.it_interval.tv_sec = 0;
+ tspec.it_interval.tv_nsec = SR_HZ_TO_NS(devc->samplerate);
+ tspec.it_value = tspec.it_interval;
+
+ if (timerfd_settime(devc->timer_fd, 0, &tspec, NULL)) {
+ sr_err("Failed to set timer");
+ close(devc->timer_fd);
return SR_ERR;
}
- devc->channel = g_io_channel_unix_new(devc->pipe_fds[0]);
+ devc->channel = g_io_channel_unix_new(devc->timer_fd);
g_io_channel_set_flags(devc->channel, G_IO_FLAG_NONBLOCK, NULL);
g_io_channel_set_encoding(devc->channel, NULL, NULL);
g_io_channel_set_buffered(devc->channel, FALSE);
sr_session_source_add_channel(sdi->session, devc->channel,
- G_IO_IN | G_IO_ERR, 1, bl_acme_receive_data, (void *)sdi);
+ G_IO_IN | G_IO_ERR, 1000, bl_acme_receive_data, (void *)sdi);
- /* Send header packet to the session bus. */
- std_session_send_df_header(sdi, LOG_PREFIX);
- devc->start_time = g_get_monotonic_time();
+ std_session_send_df_header(sdi);
+ sr_sw_limits_acquisition_start(&devc->limits);
return SR_OK;
}
-static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
+static int dev_acquisition_stop(struct sr_dev_inst *sdi)
{
- struct sr_datafeed_packet packet;
struct dev_context *devc;
- (void)cb_data;
-
devc = sdi->priv;
- if (sdi->status != SR_ST_ACTIVE)
- return SR_ERR_DEV_CLOSED;
-
+ dev_acquisition_close(sdi);
sr_session_source_remove_channel(sdi->session, devc->channel);
g_io_channel_shutdown(devc->channel, FALSE, NULL);
g_io_channel_unref(devc->channel);
devc->channel = NULL;
- /* Send last packet. */
- packet.type = SR_DF_END;
- sr_session_send(sdi, &packet);
+ std_session_send_df_end(sdi);
+
+ if (devc->samples_missed > 0)
+ sr_warn("%" PRIu64 " samples missed", devc->samples_missed);
return SR_OK;
}
-SR_PRIV struct sr_dev_driver baylibre_acme_driver_info = {
+static struct sr_dev_driver baylibre_acme_driver_info = {
.name = "baylibre-acme",
.longname = "BayLibre ACME (Another Cute Measurement Equipment)",
.api_version = 1,
- .init = init,
- .cleanup = cleanup,
+ .init = std_init,
+ .cleanup = std_cleanup,
.scan = scan,
- .dev_list = dev_list,
- .dev_clear = dev_clear,
+ .dev_list = std_dev_list,
+ .dev_clear = std_dev_clear,
.config_get = config_get,
.config_set = config_set,
.config_list = config_list,
- .dev_open = dev_open,
- .dev_close = dev_close,
+ .dev_open = std_dummy_dev_open,
+ .dev_close = std_dummy_dev_close,
.dev_acquisition_start = dev_acquisition_start,
.dev_acquisition_stop = dev_acquisition_stop,
- .priv = NULL,
+ .context = NULL,
};
+SR_REGISTER_DEV_DRIVER(baylibre_acme_driver_info);
projects / libsigrok.git / blobdiff