Added LED_ONCE to led handler

src/ledHandler.c

@@ -43,6 +43,15 @@ static void blink_on_board_led_cb(void *arg) {
             // toggle LED each tick
             mgos_gpio_toggle(ON_BOARD_LED);
             break;
+        case LED_ONCE:
+            ++numTicksLedHasThisState;
+            if (numTicksLedHasThisState == 1) {
+                mgos_gpio_write(ON_BOARD_LED, 0); // on
+            } else
+            if (numTicksLedHasThisState > 8) {
+                set_led_status(LED_OFF);
+            }
+            break;
         default:
             LOG(LL_ERROR, ("Invalid current LED status: %d -- ignored", currentStatus));
             break;

src/ledHandler.h

@@ -10,7 +10,8 @@ enum LEDStatus {
     LED_OFF = 0, // permanently off
     LED_ON = 1, // permanently on
     LED_BLINK_SLOW = 2, // on 0,5x / second (1s on, 1s off)
-    LED_BLINK_FAST = 3 // on 2x / second (250ms on, 250ms off)
+    LED_BLINK_FAST = 3, // on 2x / second (250ms on, 250ms off)
+    LED_ONCE = 4 // on for 2 seconds, then off again
 };
 
 extern void set_led_status(enum LEDStatus newStatus);