small refactoring how the playlist works. allow faces to do working stuff in a loop thread

include/faceCalendar.h

@@ -4,6 +4,7 @@
 
 void setupFaceCalendar();
 void loopFaceCalendar();
+void playlistFaceCalendar();
 bool updateCalendarData();
 
 #endif

include/faceWeather.h

@@ -37,6 +37,7 @@ extern faceWeatherData weatherData;
 
 void setupFaceWeather();
 void loopFaceWeather();
+void playlistFaceWeather();
 
 bool updateWeatherData();
 

src/faceCalendar.cpp

@@ -31,6 +31,12 @@ void setupFaceCalendar()
 }
 
 void loopFaceCalendar()
+{
+	//downloadRandomePicture();
+	//downloadFile("https://images.unsplash.com/photo-1582225764554-a82806fe9f30?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjExMDM0OH0&w=390&h=384&fm=png&fit=crop&duotone=000000,FFFFFF", "/tom");
+}
+
+void playlistFaceCalendar()
 {
 	// TODO update picture every x seconds
 	showFaceCalendar();

src/faceWeather.cpp

@@ -5,6 +5,7 @@
 #include "display.h"
 #include "download.h"
 #include "settings.h"
+#include "datetime.h"
 
 #include <Fonts/FreeSansBold24pt7b.h> // current day
 #include <Fonts/FreeSansBold18pt7b.h> // current day
@@ -13,6 +14,8 @@ const char faceWeatherCurrent[] = "/weatherCurrent.json";
 const char faceWeatherForecast[] = "/weatherForecast.json";
 faceWeatherData weatherData;
 
+unsigned long lastWeatherDataUpdate = 0;
+
 void render_current();
 void render_forecast();
 bool readWeatherData();
@@ -20,9 +23,21 @@ bool readWeatherData();
 void setupFaceWeather()
 {
 	readWeatherData();
+	lastWeatherDataUpdate = millis();
 }
 
 void loopFaceWeather()
+{
+	// update every 10 min
+	if ((millis() - lastWeatherDataUpdate) >= 600000)
+	{
+		Serial.println(&now, "update weather data @ %A, %B %d %Y %H:%M:%S");
+		lastWeatherDataUpdate = millis();
+		updateWeatherData();
+	}
+}
+
+void playlistFaceWeather()
 {
 	display.setRotation(0);
 	display.setFullWindow();

src/playlist.cpp

@@ -16,8 +16,8 @@ typedef FaceAndName FaceAndNameList[];
 
 // List of faces to cycle through
 FaceAndNameList faces = {
-	{loopFaceWeather, "Weather"},
-	{loopFaceCalendar, "Calendar"},
+	{playlistFaceWeather, "Weather"},
+	{playlistFaceCalendar, "Calendar"},
 };
 
 const uint8_t faceCount = ARRAY_SIZE(faces);
@@ -51,6 +51,9 @@ void setupPlaylist()
 
 void loopPlaylist()
 {
+	loopFaceWeather();
+	loopFaceCalendar();
+
 	if (PlaylistGetRemainingTimeMs() <= 0) // && autoplayEnabled
 	{
 		PlaylistResetTimer();