2 files changed, 5 insertions, 1 deletions
diff --git a/testhal/STM32/multi/USB_CDC/cfg-stm32f407_discovery/portab.c b/testhal/STM32/multi/USB_CDC/cfg-stm32f407_discovery/portab.c
index 0918c108c..8ab191970 100644
--- a/testhal/STM32/multi/USB_CDC/cfg-stm32f407_discovery/portab.c
+++ b/testhal/STM32/multi/USB_CDC/cfg-stm32f407_discovery/portab.c
@@ -48,4 +48,8 @@
 /* Module exported functions.                                                */
 /*===========================================================================*/
 
+void portab_setup(void) {
+
+}
+
 /** @} */
diff --git a/testhal/STM32/multi/USB_CDC/cfg-stm32f407_discovery/portab.h b/testhal/STM32/multi/USB_CDC/cfg-stm32f407_discovery/portab.h
index 70e918219..123349a97 100644
--- a/testhal/STM32/multi/USB_CDC/cfg-stm32f407_discovery/portab.h
+++ b/testhal/STM32/multi/USB_CDC/cfg-stm32f407_discovery/portab.h
@@ -58,7 +58,7 @@
 #ifdef __cplusplus
 extern "C" {
 #endif
-
+  void portab_setup(void);
 #ifdef __cplusplus
 }
 #endif