timesync

src/main/CMakeLists.txt

@@ -2,4 +2,5 @@ idf_component_register(SRCS "app_main.c"
                             "network_mngr.c"
                             "gpio.c"
                             "counter.c"
+                            "timesync.c"
                     INCLUDE_DIRS ".")

src/main/app_main.c

@@ -15,6 +15,7 @@
 
 #include "gpio.h"
 #include "counter.h"
+#include "timesync.h"
 
 
 
@@ -36,9 +37,13 @@ void deviceInit() {
 void app_main(void)
 {
     deviceInit();
+
+    // it is important to initialize the counter before the gpios
     counterInit();
+
     gpioInit();
     networkInit(isGpioForceProv());
+    timesyncInit();
 
     /* Start main application now */
     while (1) {

src/main/counter.c

@@ -1,6 +1,7 @@
 #include <stdint.h>
 
 #include "counter.h"
+#include "timesync.h"
 
 #include <driver/timer.h>
 #include <esp_log.h>
@@ -33,7 +34,8 @@ static void counterZeroCrossingAveragerTask(void *arg) {
         if (currentCounterValue == QUEUE_MARKER) {
             if (counterCnt > 0) {
                 uint32_t counterSecondAverage = ((uint32_t)(counterSum)) / ((uint32_t)(counterCnt));
-                ESP_LOGI(TAG, "%u %u %u", (uint32_t)counterCnt, (uint32_t)counterSum, counterSecondAverage);
+                int ts = timesyncReady();
+                ESP_LOGI(TAG, "%d %u %u %u", ts, (uint32_t)counterCnt, (uint32_t)counterSum, counterSecondAverage);
             } else {
                 ESP_LOGW(TAG, "counterCnt is zero");
             }

src/main/timesync.c

@@ -0,0 +1,29 @@
+#include "timesync.h>"
+#include <stdbool.h>
+#include <esp_log.h>
+#include <esp_sntp.h>
+#include <time.h>
+#include <sys/time.h>
+
+static const char *TAG = "ts";
+
+static bool synchronized = false;
+
+void timesyncCallback(struct timeval *tv) {
+    ESP_LOGI(TAG, "time is synchronized now");
+    synchronized = true;
+}
+
+void timesyncInit() {
+    ESP_LOGI(TAG, "Initializiing SNTP");
+    sntp_setoperatingmode(SNTP_OPMODE_POLL);
+    sntp_setservername(0, SNTP_SERVER);
+    sntp_set_time_sync_notification_cb(timesyncCallback);
+    sntp_set_sync_mode(SNTP_SYNC_MODE_IMMED);
+    sntp_set_sync_interval(60*1000); // 1 minute
+    sntp_init();
+}
+
+bool timesyncReady() {
+    return synchronized;
+}

src/main/timesync.h

@@ -0,0 +1,16 @@
+#ifndef _TIMESYNC_H_
+#deifne _TIMESYNC_H_
+
+#include <stdbool.h>
+
+
+#define SNTP_SERVER "pool.ntp.org"
+
+
+void timesyncInit();
+bool timesyncReady();
+
+#endif // _TIMESYNC_H_
+
+
+