added licenseHEADmaster

1 files changed, 45 insertions, 0 deletions

diff --git a/software/main/sntp.c b/software/main/sntp.c
new file mode 100644
index 0000000..c639a79
--- /dev/null
+++ b/software/main/sntp.c
@@ -0,0 +1,45 @@
+#include <string.h>
+#include <time.h>
+#include <sys/time.h>
+#include "freertos/FreeRTOS.h"
+#include "freertos/task.h"
+#include "freertos/event_groups.h"
+#include "esp_system.h"
+#include "esp_event.h"
+#include "esp_log.h"
+#include "esp_attr.h"
+#include "esp_sleep.h"
+#include "nvs_flash.h"
+#include "esp_sntp.h"
+
+#include "../include/sntp.h"
+
+void obtain_time(void);
+void initialize_sntp(void);
+
+void time_sync_notification_cb(struct timeval *tv) {
+    ESP_LOGI(SNTP_TAG, "Notification of a time synchronization event");
+}
+
+void initialize_sntp(void) {
+    ESP_LOGI(SNTP_TAG, "Initializing SNTP");
+    sntp_setoperatingmode(SNTP_OPMODE_POLL);
+    sntp_setservername(0, "pool.ntp.org");
+    sntp_set_time_sync_notification_cb(time_sync_notification_cb);
+    sntp_init();
+}
+
+void obtain_time(void) {
+    initialize_sntp();
+
+    time_t now = 0;
+    struct tm timeinfo = {0};
+    int retry = 0;
+    const int retry_count = 10;
+    while (sntp_get_sync_status() == SNTP_SYNC_STATUS_RESET && ++retry < retry_count) {
+        ESP_LOGI(SNTP_TAG, "Waiting for system time to be set... (%d/%d)", retry, retry_count);
+        vTaskDelay(2000 / portTICK_PERIOD_MS);
+    }
+    time(&now);
+    localtime_r(&now, &timeinfo);
+}
\ No newline at end of file