update time code

src/main.cpp

@@ -29,7 +29,7 @@
 U8G2_SSD1306_128X64_NONAME_F_HW_I2C u8g2(U8G2_R0, /* reset=*/ 16, /* clock=*/ 15, /* data=*/ 4);
 
 
-char timeStr[64];
+char timeStr[20];
 char weatherStr[32];
 RTC_DATA_ATTR static int boot_count = 0;
 
@@ -66,6 +66,10 @@ void setup() {
   tzset();
   localtime_r(&now, &timeinfo);
 
+  if (timeinfo.tm_year < (2016 - 1900)) {
+    // time not set
+  }
+
   //Initialize Basecamp
   iot.begin();
 
@@ -237,8 +241,7 @@ void loop()
   tzset();
   localtime_r(&now, &timeinfo);
 
-strftime(timeStr, sizeof(timeStr), "%c", &timeinfo);
-Serial.println(timeStr);
+strftime(timeStr, sizeof(timeStr), "%H:%M:%S", &timeinfo);
 
     sprintf(weatherStr, "%.1f°C  %.1f%%  %.0fhPa", bme280.readTemperature(), bme280.readHumidity(), bme280.readPressure());
   }