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Add prometheus hook for battery voltage

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Pim van Pelt
2017-11-27 22:59:26 +01:00
parent 4aa8c56f40
commit 72f757a913
1 changed files with 11 additions and 0 deletions
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11
src/widget_battery.c
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@ -2,6 +2,7 @@
#include "mgos_adc.h" #include "mgos_adc.h"
#include "tft.h" #include "tft.h"
#include "mongoose-touch.h" #include "mongoose-touch.h"
#include "mgos_prometheus_metrics.h"
#define WIDGET_BATTERY_ADC_PIN 35 #define WIDGET_BATTERY_ADC_PIN 35
@ -40,6 +41,15 @@ static void widget_battery_render(struct widget_t *w, void *ev_data) {
(void) ev_data; (void) ev_data;
} }
static void prometheus_battery_metrics_fn(struct mg_connection *nc, void *user_data) {
mgos_prometheus_metrics_printf(nc, GAUGE,
"battery_mvolts", "Battery voltage in mV",
"%d", widget_battery_getvoltage());
(void) user_data;
}
void widget_battery_ev(int ev, struct widget_t *w, void *ev_data) { void widget_battery_ev(int ev, struct widget_t *w, void *ev_data) {
if (!w) if (!w)
return; return;
@ -48,6 +58,7 @@ void widget_battery_ev(int ev, struct widget_t *w, void *ev_data) {
case EV_WIDGET_CREATE: case EV_WIDGET_CREATE:
LOG(LL_INFO, ("Monitoring LiPo voltage on gpio=%d", WIDGET_BATTERY_ADC_PIN)); LOG(LL_INFO, ("Monitoring LiPo voltage on gpio=%d", WIDGET_BATTERY_ADC_PIN));
mgos_adc_enable(WIDGET_BATTERY_ADC_PIN); mgos_adc_enable(WIDGET_BATTERY_ADC_PIN);
mgos_prometheus_metrics_add_handler(prometheus_battery_metrics_fn, NULL);
case EV_WIDGET_DRAW: case EV_WIDGET_DRAW:
case EV_WIDGET_REDRAW: case EV_WIDGET_REDRAW:
case EV_WIDGET_TIMER: case EV_WIDGET_TIMER: