Add OLED health function

src/main.cpp

@@ -16,11 +16,19 @@
 #include "config.h"
 
 U8G2_SSD1309_128X64_NONAME2_1_4W_HW_SPI disp(U8G2_R0, /* cs=*/ 15, /* dc=*/ 2, /* reset=*/ 16);
-double progress = 0;
+
+// Socket data variables
+double progress = 0.0;
+uint64 timeRemaining = 0;
+uint64 timeElapsed = 0;
+uint8 hotendTemp = 0;
+uint8 buildPlateTemp = 0;
 
 // TODO:
 // 1. Add WPA2 and connect QR to display
 //  "WIFI:S:"+ssid+";T:WPA;P:"+pass+";;"
+// 2. Use config.h for printer spec for now
+// 3. Add webfig menu for selecting a printer
 
 void statusMsg(String msg){
   disp.firstPage();
@@ -29,6 +37,14 @@ void statusMsg(String msg){
   }while ( disp.nextPage() );
 }
 
+void screenRefresh(){
+  // Fill screen
+  disp.setDrawColor(0);
+  disp.drawBox(0, 0, 128, 64);
+  delay(20);
+  disp.setDrawColor(1);
+}
+
 void configModeCallback (WiFiManager *myWiFiManager) {
   Serial.println("Entered config mode");
   statusMsg("Setup");
@@ -143,6 +159,10 @@ void loop(void) {
     disp.setDrawColor(1);
     drawUI();
     drawProgress();
+    if(millis() % 500 <= 2){
+      Serial.println("Refreshing");
+      screenRefresh();
+    }
   }while ( disp.nextPage() );
 
   // TODO: Replace this with data fetch