pim/prometheus-sensors
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Add statistics to DHT

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This commit is contained in:
Pim van Pelt
2018-04-04 16:54:10 +02:00
parent e41fb6900d
commit 9a358e31ab
1 changed files with 26 additions and 4 deletions
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30
src/dht_drv.c
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@ -21,6 +21,7 @@ static int s_num_dht = 0;
static void dht_prometheus_metrics(struct mg_connection *nc, void *user_data) {
int i;
struct mgos_dht_stats stats;
for (i=0; i<s_num_dht; i++) {
mgos_prometheus_metrics_printf(nc, GAUGE,
@ -29,6 +30,25 @@ static void dht_prometheus_metrics(struct mg_connection *nc, void *user_data) {
mgos_prometheus_metrics_printf(nc, GAUGE,
"humidity", "Relative humidity percentage",
"{sensor=\"%d\",type=\"DHT\"} %f", i, s_dht_sensor[i]->humidity);
if (mgos_dht_getStats(s_dht_sensor[i]->dht, &stats)) {
mgos_prometheus_metrics_printf(nc, COUNTER,
"sensor_read_total", "Total reads from sensor",
"{sensor=\"%d\",type=\"DHT\"} %u", i, stats.read);
mgos_prometheus_metrics_printf(nc, COUNTER,
"sensor_read_success_total", "Total successful reads from sensor",
"{sensor=\"%d\",type=\"DHT\"} %u", i, stats.read_success);
mgos_prometheus_metrics_printf(nc, COUNTER,
"sensor_read_success_cached_total", "Total successful cached reads from sensor",
"{sensor=\"%d\",type=\"DHT\"} %u", i, stats.read_success_cached);
uint32_t errors = stats.read - stats.read_success - stats.read_success_cached;
mgos_prometheus_metrics_printf(nc, COUNTER,
"sensor_read_error_total", "Total unsuccessful reads from sensor",
"{sensor=\"%d\",type=\"DHT\"} %u", i, errors);
mgos_prometheus_metrics_printf(nc, COUNTER,
"sensor_read_success_usecs_total", "Total microseconds spent in reads from sensor",
"{sensor=\"%d\",type=\"DHT\"} %f", i, stats.read_success_usecs);
}
}
(void) user_data;
@ -36,16 +56,18 @@ static void dht_prometheus_metrics(struct mg_connection *nc, void *user_data) {
static void dht_timer_cb(void *user_data) {
struct dht_sensor *dht_sensor = (struct dht_sensor *)user_data;
double start;
struct mgos_dht_stats stats_before, stats_after;
uint32_t usecs=0;
if (!dht_sensor) return;
start=mgos_uptime();
mgos_dht_getStats(dht_sensor->dht, &stats_before);
dht_sensor->temp = mgos_dht_get_temp(dht_sensor->dht);
dht_sensor->humidity = mgos_dht_get_humidity(dht_sensor->dht);
usecs=1000000*(mgos_uptime()-start);
LOG(LL_INFO, ("DHT sensor=%u gpio=%u temperature=%.2fC humidity=%.0f%% usecs=%u", dht_sensor->idx, dht_sensor->gpio, dht_sensor->temp, dht_sensor->humidity, usecs));
mgos_dht_getStats(dht_sensor->dht, &stats_after);
usecs=stats_after.read_success_usecs - stats_before.read_success_usecs;
LOG(LL_INFO, ("DHT sensor=%u gpio=%u temperature=%.2fC humidity=%.1f%% usecs=%u", dht_sensor->idx, dht_sensor->gpio, dht_sensor->temp, dht_sensor->humidity, usecs));
}
static bool dht_sensor_create(int pin, enum dht_type type) {