new file: main/include/functions.h

modified:   main/include/sht31.h
renamed:    main/include/lib.h -> main/src/functions.c
modified:   main/src/http_client.c
modified:   main/src/main.c
modified:   main/src/sht31.c

firmware/main/include/functions.h

@@ -0,0 +1,10 @@
+#ifndef FUNCTIONS_H
+#define FUNCTIONS_H
+
+void split_float(float num, int *int_part, float *dec_part);
+
+char* floatToString(float num);
+
+char* intToString(int num);
+
+#endif