timesync

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;
+}