added connection Indication to the display header

speedclock.h

@@ -27,6 +27,7 @@ typedef struct transcv_struct{
 #define STOPBUTTON_PRESSED LOW           // this the signal level the top button will be at as soon as pressed
 #define MIN_DELAY_BETWEEN_PRESSED_MS 1000 // this defines the time in milliseconds before the button is expected to be pressed again. We do this to avaoid keybouncing
 #define MIN_DELAY_BETWEEN_SEND_MS 100    // this defines the time in milliseconds before the next set of data will be send to the base station - except the button was pressed.
+#define CONN_TIMEOUT 10000
 
 #define STARTBUTTON_IN 4                  // start button
 #define STARTBUTTON_PRESSED LOW

speedclock.ino

@@ -30,9 +30,11 @@ unsigned long runner_start_time = 0;          // this is the time the runner lef
 signed long runner_run_time = 0;              // this is the time the runner really needed or the time started to early - depending on sign ... 
 unsigned long run_time = 0;                   // if the timer is running this is that start time ...
 boolean warn_during_run = false;              // will be set to true if there is a warning during the run - usually an offset sync error
+unsigned long connection_established = 0;
 
 boolean topbuttonwaspressed = false;
 
+
 timer_state_e timer_state = TIMER_WAIT;       // timer needs to be initialized ... 
 timer_state_e timer_new_state = TIMER_INIT;       // timer needs to be initialized ... 
 
@@ -170,6 +172,7 @@ void loop(void) {
     // read data from TOP_STATION ... 
     if( radio.available()){
         // check if radio data is available - if so read the data
+        connection_established = millis();
         while( radio.available(&pipeNo)){              // Read all available payloads
           radio.read( &radio_data, sizeof(radio_data) );                                  // Read the data the TOPSTATION sent
         } 
@@ -182,7 +185,6 @@ void loop(void) {
         Serial.println(current_time_offset);
         Serial.print(F(" Button was pressed last time on client in millis: "));
         Serial.println(radio_data.topbuttonpressedtime); 
-        
     }
 
     // offset calculation ... only needed if the variation is bigger than allowed or not enough values available already ...
@@ -475,9 +477,17 @@ void update_screen(timer_state_e state){
     display.setLetterSpacing(1);
     display.setCursor(64 - (display.strWidth(header_to_char) / 2), 0);
     display.print(header_to_char);
+    display.setCursor(1,0);
+    if(millis() - connection_established >= CONN_TIMEOUT || connection_established == 0){
+      display.print("  ");
+    }
+    else {
+      display.print("Y");
+    }
     display.setCursor(0,1);
     display.setLetterSpacing(0);
     display.print("----------------------------");
+    
     //end of the Header
     //display.setLetterSpacing(1);
     display.set2X();