--- a/main/calibration.c	Mon Feb 19 15:07:28 2024 +0100
+++ b/main/calibration.c	Mon Jun 24 17:05:20 2024 +0200
@@ -8,6 +8,7 @@
 
 static const char		*TAG = "calibration";
 
+extern my_config_t              config;
 
 extern uint16_t                 tp_xleft;		///< Testpoint X left
 extern uint16_t                 tp_xright;		///< Testpoint X right