Release 3.0.0

Changes:
 - Updated the Core to SiSDK 2024.12.1 and Matter 2.5.1
   - Matter standard has been updated to Matter 1.4
   - Expect more robust reconnections and increased stability
   - Enabled new clusters/devices in the SDK (no Matter library support yet):
      - Oven
      - Laundry washer/dryer
      - Refrigerator
      - Dishwasher
      - Energy EVSE
      - Water heater
      - Power source
      - RVC
      - CO/smoke alarm
      - CO measurement
      - CO2 measurement
      - Water heater
      - Basic Video Player
      - Binding
 - Implemented Matter Air Purifier support
 - Implemented simultaneous Matter and BLE support along with examples
 - Refactored the Matter Air Quality Sensor example
 - Added 'Arduino Matter Provision' support for the XIAO MG24
 - Added 8 new Matter provisioning binaries for the Nano Matter
 - Switched the Nano Matter to the OpenThread Certification libraries
 - Added Matter.decommission() to the readme
 - Exposed the mode setting API to the users in MatterFan
 - Fixed the occupancy attribute initialization in the Matter DeviceOccupancySensor
 - Fixed Matter provisioning binaries '1' and '2' for the Nano Matter
 - Implemented AI/ML support for all compatible boards (Nano Matter, XIAO MG24, xG24 Dev/Explorer Kit) - alongside with the option to use AI/ML with radio variants. All supported boards can run the Magic Wand example now.
 - Added BLE SPP (Serial Port Profile) example
 - Added the Silicon Labs fork of the OneWire library
 - Added hardware info sketch
 - Implemented additional APIs for getting heap memory info
 - Added getters for board and radio stack type
 - Added OpenThread RCP firmware for the XIAO MG24
 - Added OpenThread RCP firmware for the SparkFun Thing Plus Matter
 - Added basic HIL smoke test for the Matter library
 - Switched the language standard to C18 and GNU++17 for all variants
 - Limited 'chip' namespace usage in the Matter library headers
 - Renamed the core folder from 'silabs' to 'gecko'
 - Made the board/variant specific macros more consistent
 - Added missing string conversion functions (itoa, ltoa, utoa, ultoa)
 - Changed the deep sleep escape pin on the XIAO MG24 to PC1 (D1)
 - Replaced sent bytes with received bytes in 'SPI.transfer(buf, count)' return value
 - Remapped Serial1/SPI1 to the correct MikroBUS pins on the xG24 ExpKit and Lyra24P20
 - Fixed Matter pairing code printing corner cases
 - Added initialization guard to WatchdogTimer
 - Made the GPIO interrupt handler thread safe
 - Fixed Serial init in the BLE blinky example
 - Made the usage of the -Wno-unused-parameter flag consistent across boards and variants
 - Solved CI/CD issue with LFS artifact publishing
 - And a bunch of other minor fixes & improvements

Author: silabs-bozont

boards.txt

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright 2024 Silicon Laboratories Inc. www.silabs.com
+ * Copyright 2025 Silicon Laboratories Inc. www.silabs.com
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -120,5 +120,6 @@ void analogReadDMA(pin_size_t pin, uint32_t *buffer, uint32_t size, void (*user_
 bool get_system_init_finished();
 uint32_t get_system_reset_cause();
 void escape_hatch();
+void gpio_interrupt_handler_init();
 
 #endif // ARDUINO_H

cores/silabs/Arduino.h renamed to cores/gecko/Arduino.h

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright 2024 Silicon Laboratories Inc. www.silabs.com
+ * Copyright 2025 Silicon Laboratories Inc. www.silabs.com
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -29,6 +29,8 @@
 
 #include <list>
 #include "gpiointerrupt.h"
+#include "FreeRTOS.h"
+#include "semphr.h"
 
 typedef struct {
   PinName pin_name;
@@ -38,20 +40,35 @@ typedef struct {
 
 static std::list<gpio_interrupt_handler_t> gpio_interrupt_handlers;
 
+SemaphoreHandle_t gpio_isr_mutex;
+StaticSemaphore_t gpio_isr_mutex_buf;
+
 static void gpio_irq_handler(uint8_t interrupt_num, void *ctx)
 {
   (void)ctx;
+  UBaseType_t uxSavedInterruptStatus;
+  uxSavedInterruptStatus = taskENTER_CRITICAL_FROM_ISR();
+
   // Go through all the interrupt handler entries
   for (auto& entry : gpio_interrupt_handlers) {
     // If the entry matches the triggered interrupt number - call the registered callback
     if (entry.interrupt_num == interrupt_num && entry.callback) {
       entry.callback();
     }
   }
+
+  taskEXIT_CRITICAL_FROM_ISR(uxSavedInterruptStatus);
+}
+
+void gpio_interrupt_handler_init()
+{
+  gpio_isr_mutex = xSemaphoreCreateMutexStatic(&gpio_isr_mutex_buf);
+  configASSERT(gpio_isr_mutex);
 }
 
 void detachInterrupt(PinName interruptNumber)
 {
+  xSemaphoreTake(gpio_isr_mutex, portMAX_DELAY);
   bool entry_found = false;
   uint8_t interrupt_num;
   // Find the handler entry for the requested pin
@@ -68,13 +85,15 @@ void detachInterrupt(PinName interruptNumber)
 
   // Return if the entry for the pin was not found
   if (!entry_found) {
+    xSemaphoreGive(gpio_isr_mutex);
     return;
   }
 
   // Deregister the external interrupt as well
   GPIO_Port_TypeDef sl_port = getSilabsPortFromArduinoPin(interruptNumber);
   uint32_t sl_pin = getSilabsPinFromArduinoPin(interruptNumber);
   GPIO_ExtIntConfig(sl_port, sl_pin, interrupt_num, false, false, false);
+  xSemaphoreGive(gpio_isr_mutex);
 }
 
 void detachInterrupt(pin_size_t interruptNumber)
@@ -100,6 +119,7 @@ void attachInterrupt(PinName interruptNumber, voidFuncPtr callback, PinStatus mo
     return;
   }
 
+  xSemaphoreTake(gpio_isr_mutex, portMAX_DELAY);
   GPIO_Port_TypeDef sl_port = getSilabsPortFromArduinoPin(interruptNumber);
   uint32_t sl_pin = getSilabsPinFromArduinoPin(interruptNumber);
 
@@ -127,6 +147,7 @@ void attachInterrupt(PinName interruptNumber, voidFuncPtr callback, PinStatus mo
   // Allocate an interrupt number for the pin
   uint32_t interrupt_num = GPIOINT_CallbackRegisterExt(sl_pin, &gpio_irq_handler, nullptr);
   if (interrupt_num == INTERRUPT_UNAVAILABLE) {
+    xSemaphoreGive(gpio_isr_mutex);
     return;
   }
 
@@ -139,6 +160,7 @@ void attachInterrupt(PinName interruptNumber, voidFuncPtr callback, PinStatus mo
   inthandler_entry.callback = callback;
   inthandler_entry.interrupt_num = interrupt_num;
   gpio_interrupt_handlers.push_back(inthandler_entry);
+  xSemaphoreGive(gpio_isr_mutex);
 }
 
 void attachInterruptParam(pin_size_t interruptNumber, voidFuncPtrParam callback, PinStatus mode, void* param)

cores/silabs/Interrupt.cpp renamed to cores/gecko/Interrupt.cpp

@@ -29,7 +29,6 @@
 #include <cstdarg>
 #include "em_usart.h"
 #include "sl_iostream.h"
-#include "sl_iostream_init_usart_instances.h"
 
 using namespace arduino;