From 83cbb921f513d7e87cdca4a9baf40f8b7d1465e8 Mon Sep 17 00:00:00 2001
From: Embedded Innovation <Yveaux@users.noreply.github.com>
Date: Sun, 17 Jul 2016 10:28:00 +0200
Subject: [PATCH] Unify interrupt handling (#520)

ATMega328 hardware abstraction used a mix of AVR cli/sei and Arduino
noInterrupts/interrupts calls.
Changed to use AVR cli/sei only.
---
 core/MyHwATMega328.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/core/MyHwATMega328.cpp b/core/MyHwATMega328.cpp
index 11e0912..349e775 100644
--- a/core/MyHwATMega328.cpp
+++ b/core/MyHwATMega328.cpp
@@ -161,7 +161,7 @@ uint16_t hwCPUVoltage() {
 }
 
 uint16_t hwCPUFrequency() {
-	noInterrupts();
+	cli();
 	// setup timer1
 	TIFR1 = 0xFF;   
 	TCNT1 = 0; 
@@ -183,7 +183,7 @@ uint16_t hwCPUFrequency() {
 	wdt_reset();
 	WDTCSR |= (1 << WDCE) | (1 << WDE);
 	WDTCSR = WDTsave;
-	interrupts();	
+	sei();	
 	// return frequency in 1/10MHz (accuracy +- 10%)
 	return TCNT1 * 2048UL / 100000UL;
 }