From f9d5f0a10ccef59029a135779cbe3261224cbbb0 Mon Sep 17 00:00:00 2001
From: Jacques Germishuys <jacquesg@striata.com>
Date: Fri, 4 Aug 2017 21:02:44 +0200
Subject: [PATCH] use F_CPU for the AVR CPU frequency (if available)

---
 ports/avr/atomport-private.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/ports/avr/atomport-private.h b/ports/avr/atomport-private.h
index 877535c..70f91d1 100644
--- a/ports/avr/atomport-private.h
+++ b/ports/avr/atomport-private.h
@@ -31,7 +31,11 @@
 #define __ATOM_PORT_PRIVATE_H
 
 /* CPU Frequency */
+#ifdef F_CPU
+#define AVR_CPU_HZ          F_CPU
+#else
 #define AVR_CPU_HZ          1000000
+#endif
 
 #ifdef __cplusplus
 extern "C" {