* 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 int init(struct sr_context *sr_ctx)
-{
- return std_init(sr_ctx, di, LOG_PREFIX);
-}
-
-static GSList *scan(GSList *options)
-{
- struct drv_context *drvc;
- GSList *devices;
-
- (void)options;
-
- devices = NULL;
- drvc = di->priv;
- drvc->instances = NULL;
+static const uint32_t drvopts[] = {
+ SR_CONF_THERMOMETER,
+ SR_CONF_POWERMETER,
+};
- /* TODO: scan for devices, either based on a SR_CONF_CONN option
- * or on a USB scan. */
+static const uint32_t devopts[] = {
+ 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,
+};
- return devices;
-}
+/*
+ * 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)
-static GSList *dev_list(void)
-{
- return ((struct drv_context *)(di->priv))->instances;
-}
+#define MAX_SAMPLE_RATE 500 /* In Hz */
-static int dev_clear(void)
-{
- return std_dev_clear(di, NULL);
-}
+static const uint64_t samplerates[] = {
+ SR_HZ(1),
+ SR_HZ(MAX_SAMPLE_RATE),
+ SR_HZ(1),
+};
-static int dev_open(struct sr_dev_inst *sdi)
+static GSList *scan(struct sr_dev_driver *di, GSList *options)
{
- (void)sdi;
+ struct dev_context *devc;
+ struct sr_dev_inst *sdi;
+ gboolean status;
+ int i;
- /* TODO: get handle from sdi->conn and open it. */
-
- sdi->status = SR_ST_ACTIVE;
-
- return SR_OK;
-}
-
-static int dev_close(struct sr_dev_inst *sdi)
-{
- (void)sdi;
+ (void)options;
- /* TODO: get handle from sdi->conn and close it. */
+ devc = g_malloc0(sizeof(struct dev_context));
+ devc->samplerate = SR_HZ(10);
+ sdi = g_malloc0(sizeof(struct sr_dev_inst));
sdi->status = SR_ST_INACTIVE;
+ sdi->vendor = g_strdup("BayLibre");
+ sdi->model = g_strdup("ACME");
+ sdi->priv = devc;
+
+ status = bl_acme_is_sane();
+ if (!status)
+ goto err_out;
+
+ /*
+ * Iterate over all ACME connectors and check if any probes
+ * are present.
+ */
+ for (i = 0; i < MAX_PROBES; i++) {
+ /*
+ * First check if there's an energy probe on this connector. If
+ * not, and we're already at the fifth probe - see if we can
+ * detect a temperature probe.
+ */
+ status = bl_acme_detect_probe(bl_acme_get_enrg_addr(i),
+ PROBE_NUM(i), ENRG_PROBE_NAME);
+ if (status) {
+ /* Energy probe detected. */
+ status = bl_acme_register_probe(sdi, PROBE_ENRG,
+ bl_acme_get_enrg_addr(i), PROBE_NUM(i));
+ if (!status) {
+ sr_err("Error registering power probe %d",
+ PROBE_NUM(i));
+ continue;
+ }
+ } else if (i >= TEMP_PRB_START_INDEX) {
+ status = bl_acme_detect_probe(bl_acme_get_temp_addr(i),
+ PROBE_NUM(i), TEMP_PROBE_NAME);
+ if (status) {
+ /* Temperature probe detected. */
+ status = bl_acme_register_probe(sdi,PROBE_TEMP,
+ bl_acme_get_temp_addr(i), PROBE_NUM(i));
+ if (!status) {
+ sr_err("Error registering temp "
+ "probe %d", PROBE_NUM(i));
+ continue;
+ }
+ }
+ }
+ }
- return SR_OK;
-}
+ /*
+ * Let's assume there's no ACME device present if no probe
+ * has been registered.
+ */
+ if (!sdi->channel_groups)
+ goto err_out;
-static int cleanup(void)
-{
- dev_clear();
+ return std_scan_complete(di, g_slist_append(NULL, sdi));
- /* TODO: free other driver resources, if any. */
+err_out:
+ g_free(devc);
+ sr_dev_inst_free(sdi);
- return SR_OK;
+ return NULL;
}
-static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
- const struct sr_channel_group *cg)
+static int config_get(uint32_t key, GVariant **data,
+ const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
{
+ struct dev_context *devc;
int ret;
+ uint64_t shunt;
+ gboolean power_off;
- (void)sdi;
- (void)data;
- (void)cg;
+ devc = sdi->priv;
ret = SR_OK;
+
switch (key) {
- /* TODO */
+ case SR_CONF_LIMIT_SAMPLES:
+ case SR_CONF_LIMIT_MSEC:
+ return sr_sw_limits_config_get(&devc->limits, key, data);
+ case SR_CONF_SAMPLERATE:
+ *data = g_variant_new_uint64(devc->samplerate);
+ break;
+ case SR_CONF_PROBE_FACTOR:
+ if (!cg)
+ return SR_ERR_CHANNEL_GROUP;
+ ret = bl_acme_get_shunt(cg, &shunt);
+ if (ret == SR_OK)
+ *data = g_variant_new_uint64(shunt);
+ break;
+ case SR_CONF_POWER_OFF:
+ if (!cg)
+ return SR_ERR_CHANNEL_GROUP;
+ ret = bl_acme_read_power_state(cg, &power_off);
+ if (ret == SR_OK)
+ *data = g_variant_new_boolean(power_off);
+ break;
default:
return SR_ERR_NA;
}
return ret;
}
-static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi,
- const struct sr_channel_group *cg)
+static int config_set(uint32_t key, GVariant *data,
+ const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
{
- int ret;
-
- (void)data;
- (void)cg;
+ struct dev_context *devc;
+ uint64_t samplerate;
- if (sdi->status != SR_ST_ACTIVE)
- return SR_ERR_DEV_CLOSED;
+ devc = sdi->priv;
- ret = SR_OK;
switch (key) {
- /* TODO */
+ case SR_CONF_LIMIT_SAMPLES:
+ case SR_CONF_LIMIT_MSEC:
+ 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);
+ return SR_ERR_SAMPLERATE;
+ }
+ devc->samplerate = samplerate;
+ bl_acme_maybe_set_update_interval(sdi, samplerate);
+ break;
+ case SR_CONF_PROBE_FACTOR:
+ if (!cg)
+ return SR_ERR_CHANNEL_GROUP;
+ return bl_acme_set_shunt(cg, g_variant_get_uint64(data));
+ case SR_CONF_POWER_OFF:
+ if (!cg)
+ return SR_ERR_CHANNEL_GROUP;
+ 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)
+static int config_list(uint32_t key, GVariant **data,
+ const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
{
- 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)data;
- (void)cg;
+ return SR_OK;
+}
- ret = SR_OK;
- switch (key) {
- /* TODO */
- 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);
+ }
+}
+
+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 ret;
+ 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)
{
- (void)sdi;
- (void)cb_data;
+ struct dev_context *devc;
+ struct itimerspec tspec = {
+ .it_interval = { 0, 0 },
+ .it_value = { 0, 0 }
+ };
+
+ if (dev_acquisition_open(sdi))
+ return SR_ERR;
+
+ devc = sdi->priv;
+ 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;
+ }
+
+ 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;
+ }
- if (sdi->status != SR_ST_ACTIVE)
- return SR_ERR_DEV_CLOSED;
+ 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);
- /* TODO: configure hardware, reset acquisition state, set up
- * callbacks and send header packet. */
+ sr_session_source_add_channel(sdi->session, devc->channel,
+ G_IO_IN | G_IO_ERR, 1000, bl_acme_receive_data, (void *)sdi);
+
+ 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)
{
- (void)cb_data;
+ struct dev_context *devc;
+
+ devc = sdi->priv;
+
+ 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;
- if (sdi->status != SR_ST_ACTIVE)
- return SR_ERR_DEV_CLOSED;
+ std_session_send_df_end(sdi);
- /* TODO: stop acquisition. */
+ 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",
+ .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