cotninued sd card access manager

bsp_q7s/memory/SdCardManager.cpp

@@ -0,0 +1,55 @@
+#include "SdCardManager.h"
+#include "fsfw/ipc/MutexFactory.h"
+
+#include <fstream>
+#include <filesystem>
+
+SdCardManager* SdCardManager::factoryInstance = nullptr;
+
+SdCardManager::SdCardManager() {
+}
+
+SdCardManager::~SdCardManager() {
+}
+
+void SdCardManager::create() {
+    if(factoryInstance == nullptr) {
+        factoryInstance = new SdCardManager();
+    }
+}
+
+SdCardManager* SdCardManager::instance() {
+    SdCardManager::create();
+    return SdCardManager::factoryInstance;
+}
+
+ReturnValue_t SdCardManager::switchOnSdCard(sd::SdCard sdCard) {
+    if(sdCardActive(sdCard)) {
+        return ALREADY_ON;
+    }
+    return HasReturnvaluesIF::RETURN_OK;
+}
+
+ReturnValue_t SdCardManager::switchOffSdCard(sd::SdCard sdCard) {
+    return HasReturnvaluesIF::RETURN_OK;
+}
+
+bool SdCardManager::sdCardActive(sd::SdCard sdCard) {
+    if(std::filesystem::exists("/tmp/sd_status.txt")) {
+        std::ifstream sdStatus("/tmp/sd_status.txt");
+        return HasReturnvaluesIF::RETURN_OK;
+    }
+
+    return false;
+}
+
+sd::SdCard SdCardManager::getPreferredSdCard() const {
+    return preferredSdCard;
+}
+
+void SdCardManager::setPreferredSdCard(sd::SdCard sdCard) {
+    preferredSdCard = sdCard;
+}
+
+void SdCardManager::updateSdCardStateFile() {
+}