Update temperature every half hour

package.json

@@ -7,6 +7,7 @@
         "civic",
         "segment",
         "display",
+        "led",
         "speedometer"
     ],
     "private": true,

src/c/main.c

@@ -40,6 +40,7 @@ static GBitmap *s_e_icon;
 static GBitmap *s_f_icon;
 
 // tracking statics
+static bool s_pkjs_ready = false;
 static int s_batt_level;
 static uint8_t s_temp_level;
 
@@ -252,26 +253,32 @@ static void update_minute_1() {
 	}
 }
 
+static void update_temperature() {
+	DictionaryIterator *out;
+	AppMessageResult result = app_message_outbox_begin(&out);
+	if (result != APP_MSG_OK) {
+		s_temp_level = 0; // error; set to 0 bars to indicate TODO invert color and set to 20?
+		return;
+	}
+	dict_write_int8(out, MESSAGE_KEY_PKJS_TEMP_BAR_COUNT, 1);
+	result = app_message_outbox_send();
+	if (result != APP_MSG_OK) {
+		s_temp_level = 0; // error; set to 0 bars to indicate TODO invert color and set to 20?
+		return;
+	}
+}
+
 static void minute_handler(struct tm *tick_time, TimeUnits units_changed) {
 	update_minute_1();
+	if (s_pkjs_ready && tick_time->tm_min % 30 == 0) {
+		update_temperature();
+	}
 }
 
 static void inbox_received_handler(DictionaryIterator *iter, void *context) {
 	Tuple *ready_tuple = dict_find(iter, MESSAGE_KEY_PKJS_READY);
 	if (ready_tuple) {
-		// request temp bars from PKJS
-		DictionaryIterator *out;
-		AppMessageResult result = app_message_outbox_begin(&out);
-		if (result != APP_MSG_OK) {
-			s_temp_level = 0; // error; set to 0 bars to indicate TODO invert color and set to 20?
-			return;
-		}
-		dict_write_int8(out, MESSAGE_KEY_PKJS_TEMP_BAR_COUNT, 1);
-		result = app_message_outbox_send();
-		if (result != APP_MSG_OK) {
-			s_temp_level = 0; // error; set to 0 bars to indicate TODO invert color and set to 20?
-			return;
-		}
+		update_temperature();
 		return;
 	}