diff --git a/cores/beken-72xx/arduino/src/ArduinoFamily.h b/cores/beken-72xx/arduino/src/ArduinoFamily.h
index 88c4184..9e3801c 100644
--- a/cores/beken-72xx/arduino/src/ArduinoFamily.h
+++ b/cores/beken-72xx/arduino/src/ArduinoFamily.h
@@ -1,6 +1,27 @@
-/* Copyright (c) Kuba Szczodrzyński 2022-06-14. */
+/* Copyright (c) Kuba Szczodrzyński 2023-03-02. */
 
 #pragma once
 
 // Provide GPIO names to variant.cpp files
 #define LT_VARIANT_INCLUDE "gpio_pub.h"
+
+#include <stdint.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif // __cplusplus
+
+extern void vPortClearInterruptMask(uint32_t ulNewMaskValue);
+extern uint32_t ulPortSetInterruptMask(void);
+
+// TODO
+// #define clockCyclesPerMicrosecond()	 (SystemCoreClock / 1000000L)
+// #define clockCyclesToMicroseconds(a) (a * 1000L / (SystemCoreClock / 1000L))
+// #define microsecondsToClockCycles(a) (a * (SystemCoreClock / 1000000L))
+
+#define interrupts()   vPortClearInterruptMask(0)
+#define noInterrupts() ulPortSetInterruptMask()
+
+#ifdef __cplusplus
+} // extern "C"
+#endif
diff --git a/cores/common/arduino/src/Arduino.h b/cores/common/arduino/src/Arduino.h
index 285d593..5c392e9 100644
--- a/cores/common/arduino/src/Arduino.h
+++ b/cores/common/arduino/src/Arduino.h
@@ -5,6 +5,10 @@
 // LibreTuya C API (with C standard libraries)
 #include <libretuya.h>
 
+// Additional C libraries
+#include <sys/time.h>
+#include <time.h>
+
 // C++ standard libraries
 #ifdef __cplusplus
 #include <algorithm>
diff --git a/cores/common/arduino/src/wiring_compat.h b/cores/common/arduino/src/wiring_compat.h
index 6d4197c..622452d 100644
--- a/cores/common/arduino/src/wiring_compat.h
+++ b/cores/common/arduino/src/wiring_compat.h
@@ -29,6 +29,10 @@ extern "C" {
 #define attachInterruptArg	attachInterruptParam
 #define voidFuncPtrArg		voidFuncPtrParam
 
+// Additional Arduino compatibility macros
+#define round(x)				   ((x) >= 0 ? (long)((x) + 0.5) : (long)((x)-0.5))
+#define digitalPinToInterrupt(pin) (pin)
+
 // FreeRTOS utilities
 #if LT_HAS_FREERTOS
 // if xCoreID < 0 or CPU is unicore, it will use xTaskCreate, else xTaskCreatePinnedToCore