* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
- * 1. The above copyright notice and this permission notice shall be
+ * 1. The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
- * 2. If the Software is incorporated into a build system that allows
+ * 2. If the Software is incorporated into a build system that allows
* selection among a list of target devices, then similar target
* devices manufactured by PJRC.COM must be included in the list of
* target devices and selectable in the same manner.
#ifndef _usb_dev_h_
#define _usb_dev_h_
+#include "usb_desc.h"
+#if F_CPU >= 20000000 && defined(NUM_ENDPOINTS)
+
// This header is NOT meant to be included when compiling
// user sketches in Arduino. The low-level functions
// provided by usb_dev.c are meant to be called only by
// code which provides higher-level interfaces to the user.
#include "usb_mem.h"
-#include "usb_desc.h"
#ifdef __cplusplus
extern "C" {
+#ifdef __cplusplus
+}
+#endif
+
+#else // F_CPU >= 20000000 && defined(NUM_ENDPOINTS)
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+void usb_init(void);
+
#ifdef __cplusplus
}
#endif
+#endif // F_CPU >= 20000000 && defined(NUM_ENDPOINTS)
#endif