safety mechanism on reboots

bsp_q7s/core/CoreController.cpp

@@ -3,6 +3,7 @@
 #include <fsfw/events/EventManager.h>
 #include <fsfw/filesystem/HasFileSystemIF.h>
 #include <fsfw/ipc/QueueFactory.h>
+#include <fsfw/tasks/TaskFactory.h>
 
 #include "OBSWVersion.h"
 #include "fsfw/serviceinterface/ServiceInterface.h"
@@ -932,6 +933,9 @@ ReturnValue_t CoreController::actionReboot(const uint8_t *data, size_t size) {
 ReturnValue_t CoreController::gracefulShutdownTasks(xsc::Chip chip, xsc::Copy copy,
                                                     bool &protOpPerformed) {
   sdcMan->setBlocking(true);
+  sdcMan->markUnusable();
+  // Wait two seconds to ensure no one uses the SD cards
+  TaskFactory::delayTask(2000);
   // Attempt graceful shutdown by unmounting and switching off SD cards
   sdcMan->switchOffSdCard(sd::SdCard::SLOT_0);
   sdcMan->switchOffSdCard(sd::SdCard::SLOT_1);