Merge pull request 'Small tweaks' (#263) from fsfwexample/small-tweaks into development

Reviewed-on: fsfw/fsfw#263

devicehandlers/DeviceHandlerIF.h

@@ -18,6 +18,8 @@ public:
 	static const uint8_t TRANSITION_MODE_CHILD_ACTION_MASK = 0x20;
 	static const uint8_t TRANSITION_MODE_BASE_ACTION_MASK = 0x10;
 
+	static constexpr Command_t NO_COMMAND = -1;
+
 	/**
 	 * @brief This is the mode the <strong>device handler</strong> is in.
 	 *

osal/FreeRTOS/TaskManagement.h

@@ -13,7 +13,7 @@ extern "C" {
  * Architecture dependant portmacro.h function call.
  * Should be implemented in bsp.
  */
-extern void vRequestContextSwitchFromISR();
+extern "C" void vRequestContextSwitchFromISR();
 
 /*!
  * Used by functions to tell if they are being called from