From 6726d94537277867adb024d32fb4f5642fc7bbfb Mon Sep 17 00:00:00 2001
From: Randy Mackay <rmackay9@yahoo.com>
Date: Thu, 26 Jan 2017 12:41:33 +0900
Subject: [PATCH] Copter: update notify during ESC calibration

The notify devices including the RGB were not being updated meaning the main LED was normally frozen or off during calibration.  The desired behaviour is that it flashes red, blue, yellow.
---
 ArduCopter/esc_calibration.cpp | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/ArduCopter/esc_calibration.cpp b/ArduCopter/esc_calibration.cpp
index 3e3bf59097..9eaeaaf114 100644
--- a/ArduCopter/esc_calibration.cpp
+++ b/ArduCopter/esc_calibration.cpp
@@ -93,10 +93,16 @@ void Copter::esc_calibration_passthrough()
     // arm motors
     motors->armed(true);
     motors->enable();
-    
+
+    uint32_t last_notify_update_ms = 0;
     while(1) {
         // flash LEDS
         AP_Notify::flags.esc_calibration = true;
+        uint32_t now = AP_HAL::millis();
+        if (now - last_notify_update_ms > 20) {
+            last_notify_update_ms = now;
+            update_notify();
+        }
 
         // read pilot input
         read_radio();