starting fsfw

common/CMakeLists.txt

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+target_sources(
+  ${TARGET_NAME} PRIVATE
+  printChar.c)

common/printChar.c

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+#include <stdbool.h>
+#include <stdio.h>
+
+void printChar(const char* character, bool errStream) {
+  if (errStream) {
+    fprintf(stderr, "%c", *character);
+  } else {
+    printf("%c", *character);
+  }
+}