From 86581d81c98eae1fe5680f9154b54f55f63c931e Mon Sep 17 00:00:00 2001
From: Jakob Meier <meier-jakob@gmx.de>
Date: Mon, 13 Dec 2021 09:40:37 +0100
Subject: [PATCH] interpretation of empty value strings in json

---
 bsp_q7s/devices/startracker/ArcsecJsonParamBase.cpp | 7 +++++++
 bsp_q7s/devices/startracker/ArcsecJsonParamBase.h   | 5 +++++
 tmtc                                                | 2 +-
 3 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/bsp_q7s/devices/startracker/ArcsecJsonParamBase.cpp b/bsp_q7s/devices/startracker/ArcsecJsonParamBase.cpp
index 38040797..339c3fe7 100644
--- a/bsp_q7s/devices/startracker/ArcsecJsonParamBase.cpp
+++ b/bsp_q7s/devices/startracker/ArcsecJsonParamBase.cpp
@@ -17,12 +17,19 @@ ReturnValue_t ArcsecJsonParamBase::getParam(const std::string name, std::string&
     for (json::iterator it = set.begin(); it != set.end(); ++it) {
         if ((*it)[arcseckeys::NAME] == name) {
             value = (*it)[arcseckeys::VALUE];
+            convertEmpty(value);
             return RETURN_OK;
         }
     }
     return PARAM_NOT_EXISTS;
 }
 
+void ArcsecJsonParamBase::convertEmpty(std::string& value) {
+    if (value == "") {
+        value = "0";
+    }
+}
+
 void ArcsecJsonParamBase::addfloat(const std::string value, uint8_t* buffer) {
     float param = std::stof(value);
     std::memcpy(buffer, &param, sizeof(param));
diff --git a/bsp_q7s/devices/startracker/ArcsecJsonParamBase.h b/bsp_q7s/devices/startracker/ArcsecJsonParamBase.h
index dc59c6fc..320eff53 100644
--- a/bsp_q7s/devices/startracker/ArcsecJsonParamBase.h
+++ b/bsp_q7s/devices/startracker/ArcsecJsonParamBase.h
@@ -66,6 +66,11 @@ protected:
      */
     ReturnValue_t getParam(const std::string name, std::string& value);
 
+    /**
+     * @brief   Converts empty string which is equal to define a value as zero.
+     */
+    void convertEmpty(std::string& value);
+
     /**
      * @brief   This function adds a float represented as string to a buffer
      *
diff --git a/tmtc b/tmtc
index 7b01165f..bbae8284 160000
--- a/tmtc
+++ b/tmtc
@@ -1 +1 @@
-Subproject commit 7b01165ff937e45e052caeb550e622a8b9df6ee2
+Subproject commit bbae8284884ebfd49655e0a806e0d1288f4a7a70