adds a USB serial port to your design

Dependents:   Example_WatchDog_Timer

Revision:
72:08cd983d075e
Parent:
71:53949e6131f6
--- a/targets/TARGET_STM/USBHAL_STM32.cpp	Thu Jul 27 12:14:04 2017 +0100
+++ b/targets/TARGET_STM/USBHAL_STM32.cpp	Tue Nov 20 20:23:51 2018 +0000
@@ -24,6 +24,7 @@
 #define USBSTM_HAL_UNSUPPORTED
 #endif
 
+
 #ifndef USBSTM_HAL_UNSUPPORTED
 #include "USBHAL.h"
 #include "pinmap.h"
@@ -36,7 +37,6 @@
 
 #include "USBHAL_STM_TARGET.h"
 
-
 /*  this call at device reception completion on a Out Enpoint  */
 void HAL_PCD_DataOutStageCallback(PCD_HandleTypeDef *hpcd, uint8_t epnum)
 {