usb: FREE_STANDING should come with USE_SYS.

2019-05-10 10:17:48 +09:00
parent fee2cae8c4
commit c1ea549995
2 changed files with 8 additions and 0 deletions
--- a/mcu/usb-stm32f103.c
+++ b/mcu/usb-stm32f103.c
@@ -31,6 +31,10 @@

 #ifdef USE_SYS
 #include "sys-stm32f103.h"
+#else
+# ifdef FREE_STANDING
+# error "Please compile with -DUSE_SYS"
+# endif
 #endif

 #include "stm32f103.h"