diff --git a/bsp_q7s/boardtest/Q7STestTask.cpp b/bsp_q7s/boardtest/Q7STestTask.cpp
index ca64c8a6..a1470b79 100644
--- a/bsp_q7s/boardtest/Q7STestTask.cpp
+++ b/bsp_q7s/boardtest/Q7STestTask.cpp
@@ -3,6 +3,8 @@
 #include "fsfw/timemanager/Stopwatch.h"
 #include "fsfw/tasks/TaskFactory.h"
 
+#include "bsp_q7s/memory/scratchApi.h"
+
 #include <iostream>
 #include <fstream>
 #include <cstdio>
@@ -12,6 +14,7 @@ Q7STestTask::Q7STestTask(object_id_t objectId): TestTask(objectId) {
 
 ReturnValue_t Q7STestTask::performOneShotAction() {
     //sdCardTests();
+    testScratchApi();
     return TestTask::performOneShotAction();
 }
 
@@ -50,3 +53,15 @@ void Q7STestTask::fileTests() {
     system("echo \"Hallo Welt\" > /tmp/test2.txt");
     system("echo \"Hallo Welt\"");
 }
+
+void Q7STestTask::testScratchApi() {
+    ReturnValue_t result = scratch::writeNumber("TEST", 1);
+    if(result != HasReturnvaluesIF::RETURN_OK) {
+        sif::debug << "Q7STestTask::scratchApiTest: Writing number failed" << std::endl;
+    }
+    int number = 0;
+    result = scratch::readNumber("TEST", number);
+    if(result != HasReturnvaluesIF::RETURN_OK) {
+        sif::debug << "Q7STestTask::scratchApiTest: Reading number failed" << std::endl;
+    }
+}
diff --git a/bsp_q7s/boardtest/Q7STestTask.h b/bsp_q7s/boardtest/Q7STestTask.h
index 7056853e..664a8fa2 100644
--- a/bsp_q7s/boardtest/Q7STestTask.h
+++ b/bsp_q7s/boardtest/Q7STestTask.h
@@ -11,6 +11,9 @@ private:
 
     void sdCardTests();
     void fileTests();
+
+    void testScratchApi();
+
 };
 
 
diff --git a/bsp_q7s/memory/SdCardManager.cpp b/bsp_q7s/memory/SdCardManager.cpp
index d23a4331..6a7c5585 100644
--- a/bsp_q7s/memory/SdCardManager.cpp
+++ b/bsp_q7s/memory/SdCardManager.cpp
@@ -66,7 +66,7 @@ ReturnValue_t SdCardManager::setSdCardState(sd::SdCard sdCard, bool on) {
         statestring = "off";
     }
     std::ostringstream command;
-    command << "h7hw sd set " << sdstring << " " << statestring;
+    command << "q7hw sd set " << sdstring << " " << statestring;
     int result = std::system(command.str().c_str());
     if(result == 0) {
         return HasReturnvaluesIF::RETURN_OK;
diff --git a/bsp_q7s/memory/scratchApi.h b/bsp_q7s/memory/scratchApi.h
index 32e604a1..246515a1 100644
--- a/bsp_q7s/memory/scratchApi.h
+++ b/bsp_q7s/memory/scratchApi.h
@@ -2,9 +2,11 @@
 #define BSP_Q7S_MEMORY_SCRATCHAPI_H_
 
 #include "fsfw/returnvalues/HasReturnvaluesIF.h"
+#include "fsfw/serviceinterface/ServiceInterface.h"
 #include "linux/utility/utility.h"
 
 #include <iostream>
+#include <fstream>
 #include <sstream>
 #include <type_traits>
 #include <cstdlib>
@@ -18,10 +20,11 @@ namespace {
 static size_t counter = 0;
 }
 
-template<typename T, class = typename std::enable_if<std::is_unsigned<T>::value>::type>
+template<typename T, class = typename std::enable_if<std::is_integral<T>::value>::type>
 inline ReturnValue_t writeNumber(std::string name, T num) noexcept {
     std::ostringstream oss;
     oss << "xsc_scratch write " << name << " " << num;
+    sif::debug << oss.str() << std::endl;
     int result = std::system(oss.str().c_str());
     if(result != 0) {
         utility::handleSystemError(result, "scratch::writeNumber");
@@ -30,15 +33,28 @@ inline ReturnValue_t writeNumber(std::string name, T num) noexcept {
     return HasReturnvaluesIF::RETURN_OK;
 }
 
-template<typename T, class = typename std::enable_if<std::is_unsigned<T>::value>::type>
+template<typename T, class = typename std::enable_if<std::is_integral<T>::value>::type>
 inline ReturnValue_t readNumber(std::string name, T& num) noexcept {
-    std::ostringstream oss;
-    oss << "xsc_scratch read " << name << " > /tmp/scratchro" << counter++;
+    using namespace std;
+    string filename = "/tmp/sro" + counter++;
+    ostringstream oss;
+    oss << "xsc_scratch read " << name << " < " << filename;
+    sif::debug << oss.str() << std::endl;
     int result = std::system(oss.str().c_str());
     if(result != 0) {
         utility::handleSystemError(result, "scratch::writeNumber");
         return HasReturnvaluesIF::RETURN_FAILED;
     }
+    ifstream file(filename);
+    string line;
+    if (not std::getline(file, line)) {
+        return HasReturnvaluesIF::RETURN_FAILED;
+    }
+
+    size_t pos = line.find("=");
+    std::string valueAsString = line.substr(pos);
+    sif::debug << valueAsString << std::endl;
+    num = std::stoi(valueAsString);
     return HasReturnvaluesIF::RETURN_OK;
 }