From 7dc0aa16ec06dd35813beec825168ac568d88d3d Mon Sep 17 00:00:00 2001
From: Khoi Hoang <57012152+khoih-prog@users.noreply.github.com>
Date: Sun, 16 May 2021 23:48:44 -0400
Subject: [PATCH] Add defs for compatibility (#142)

Add definitions for compatibility to many platforms and libraries
- clockCyclesPerMicrosecond()
- clockCyclesToMicroseconds(a)
- microsecondsToClockCycles(a)
---
 cores/rp2040/Arduino.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/cores/rp2040/Arduino.h b/cores/rp2040/Arduino.h
index f8a32aa81..99c1eb85b 100644
--- a/cores/rp2040/Arduino.h
+++ b/cores/rp2040/Arduino.h
@@ -40,6 +40,11 @@
 extern "C"{
 #endif // __cplusplus
 
+// For compatibility to many platforms and libraries
+#define clockCyclesPerMicrosecond() ( F_CPU / 1000000L )
+#define clockCyclesToMicroseconds(a) ( (a) / clockCyclesPerMicrosecond() )
+#define microsecondsToClockCycles(a) ( (a) * clockCyclesPerMicrosecond() )
+
 // Disable/reenable all interrupts.  Safely handles nested disables
 void interrupts();
 void noInterrupts();