From 07360645afd84a4ccdf8cb3fba89c36511b4f7a4 Mon Sep 17 00:00:00 2001
From: Makuna <Makuna@hotmail.com>
Date: Mon, 8 Jun 2015 17:49:18 -0700
Subject: [PATCH] Out of bounds pixel count check

Added ISYNC
---
 NeoPixelBus.cpp | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/NeoPixelBus.cpp b/NeoPixelBus.cpp
index 13c01b2..598b99b 100644
--- a/NeoPixelBus.cpp
+++ b/NeoPixelBus.cpp
@@ -92,6 +92,7 @@ static inline void send_pixels_800(uint8_t* pixels, uint8_t* end, uint8_t pin)
 
     // this set low will help cleanup the first bit
     GPIO_REG_WRITE(GPIO_OUT_W1TC_ADDRESS, pinRegister);
+    __asm__ __volatile__("isync");
 
     cyclesStart = ESP.getCycleCount() + CYCLES_800;
     while (pixels < end)
@@ -145,6 +146,7 @@ static inline void send_pixels_400(uint8_t* pixels, uint8_t* end, uint8_t pin)
 
     // this set low will help cleanup the first bit
     GPIO_REG_WRITE(GPIO_OUT_W1TC_ADDRESS, pinRegister);
+    __asm__ __volatile__("isync");
 
     cyclesStart = ESP.getCycleCount() + CYCLES_400;
     while (pixels < end)
@@ -1166,6 +1168,11 @@ RgbColor NeoPixelBus::GetPixelColor(uint16_t n) const
 
 void NeoPixelBus::LinearFadePixelColor(uint16_t time, uint16_t n, RgbColor color)
 {
+    if (n >= _countPixels)
+    {
+        return;
+    }
+
     if (_animations[n].time != 0)
     {
         _activeAnimations--;