Add OSAL singleton initialization to Os::init()

Os/Cpu.hpp

@@ -79,7 +79,7 @@ class Cpu final : public CpuInterface {
     //-----------------------------------------------------------------------------
 
     //! \brief initialize the singleton
-    void init();
+    static void init();
 
     //! \brief return singleton
     static Cpu& getSingleton();

Os/Memory.hpp

@@ -67,7 +67,7 @@ class Memory final : public MemoryInterface {
   public:
 
     //! \brief initialize the singleton
-    void init();
+    static void init();
 
     //! \brief return singleton
     static Memory& getSingleton();

Os/Os.cpp

@@ -5,14 +5,18 @@
 #include "Os/Os.hpp"
 #include "FpConfig.h"
 #include "Os/Console.hpp"
+#include "Os/Cpu.hpp"
 #include "Os/FileSystem.hpp"
+#include "Os/Memory.hpp"
 
 namespace Os {
 
 void init() {
-    // Console and FileSystem are singletons and must be initialized
-    (void)Os::Console::init();
-    (void)Os::FileSystem::init();
+    // Initialize all OSAL singletons
+    Os::Console::init();
+    Os::FileSystem::init();
+    Os::Cpu::init();
+    Os::Memory::init();
 }
 
 }  // namespace Os

Os/Os.hpp

@@ -35,7 +35,9 @@ struct UsedTotal {
 
 }
 
-//! \brief Initialization function for the OSAL layer
+//! \brief Initialize the OS Abstraction Layer (OSAL)
+//!
+//! - Initialize all singletons for the OSAL modules that use the singleton pattern
 void init();
 
 }  // namespace Os