From ebc02673ddc269f1cfdb98e061dc72c33783d3a6 Mon Sep 17 00:00:00 2001
From: Robin Mueller <robin.mueller.m@gmail.com>
Date: Fri, 2 Sep 2022 08:50:39 +0200
Subject: [PATCH 1/2] provide a weak print char impl

---
 src/fsfw_hal/common/CMakeLists.txt |  2 ++
 src/fsfw_hal/common/printChar.c    | 10 ++++++++++
 2 files changed, 12 insertions(+)
 create mode 100644 src/fsfw_hal/common/printChar.c

diff --git a/src/fsfw_hal/common/CMakeLists.txt b/src/fsfw_hal/common/CMakeLists.txt
index f1cfec52..1cd9c678 100644
--- a/src/fsfw_hal/common/CMakeLists.txt
+++ b/src/fsfw_hal/common/CMakeLists.txt
@@ -1 +1,3 @@
 add_subdirectory(gpio)
+
+target_sources(${LIB_FSFW_NAME} PRIVATE printChar.c)
\ No newline at end of file
diff --git a/src/fsfw_hal/common/printChar.c b/src/fsfw_hal/common/printChar.c
new file mode 100644
index 00000000..6e02c1df
--- /dev/null
+++ b/src/fsfw_hal/common/printChar.c
@@ -0,0 +1,10 @@
+#include <stdio.h>
+#include <stdbool.h>
+
+void __attribute__((weak)) printChar(const char* character, bool errStream) {
+  if (errStream) {
+    fprintf(stderr, "%c", *character);
+  } else {
+    printf("%c", *character);
+  }
+}

From d52f3354552371db87b881d6100dcdabc14598ce Mon Sep 17 00:00:00 2001
From: Ulrich Mohr <mohr@irs.uni-stuttgart.de>
Date: Thu, 8 Sep 2022 11:47:40 +0200
Subject: [PATCH 2/2] sif::buffer: if disabeld do not print

---
 src/fsfw/serviceinterface/ServiceInterfaceBuffer.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/fsfw/serviceinterface/ServiceInterfaceBuffer.cpp b/src/fsfw/serviceinterface/ServiceInterfaceBuffer.cpp
index dd928efe..092c234c 100644
--- a/src/fsfw/serviceinterface/ServiceInterfaceBuffer.cpp
+++ b/src/fsfw/serviceinterface/ServiceInterfaceBuffer.cpp
@@ -58,6 +58,9 @@ ServiceInterfaceBuffer::ServiceInterfaceBuffer(std::string setMessage, bool addC
 }
 
 void ServiceInterfaceBuffer::putChars(char const* begin, char const* end) {
+  if (not isActive) {
+    return;
+  }
   char array[BUF_SIZE];
   uint32_t length = end - begin;
   if (length > sizeof(array)) {