From f2801f15202a0f2e498c36a117707a90bd5075e6 Mon Sep 17 00:00:00 2001
From: Martino Facchin <m.facchin@arduino.cc>
Date: Fri, 13 Dec 2024 12:43:45 +0100
Subject: [PATCH] core: add time related macros

Fixes compilation error found at https://www.cnx-software.com/2024/12/10/arduino-core-for-zephyr-beta-released/
---
 cores/arduino/Arduino.h     | 1 +
 cores/arduino/time_macros.h | 7 +++++++
 2 files changed, 8 insertions(+)
 create mode 100644 cores/arduino/time_macros.h

diff --git a/cores/arduino/Arduino.h b/cores/arduino/Arduino.h
index bdf9c57d..9f9eb76c 100644
--- a/cores/arduino/Arduino.h
+++ b/cores/arduino/Arduino.h
@@ -113,6 +113,7 @@ int digitalPinToInterrupt(pin_size_t pin);
 #include <zephyrSerial.h>
 #include <strings.h>
 #include <api/itoa.h>
+#include <time_macros.h>
 
 // Allow namespace-less operations if Arduino.h is included
 using namespace arduino;
diff --git a/cores/arduino/time_macros.h b/cores/arduino/time_macros.h
new file mode 100644
index 00000000..6c9290f6
--- /dev/null
+++ b/cores/arduino/time_macros.h
@@ -0,0 +1,7 @@
+#pragma once
+
+#include <zephyr/sys/time_units.h>
+
+#define clockCyclesPerMicrosecond()  (1000000 / k_cyc_to_ns_near64(1000))
+#define clockCyclesToMicroseconds(a) (a / clockCyclesPerMicrosecond())
+#define microsecondsToClockCycles(a) (a * clockCyclesPerMicrosecond())