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Diffstat (limited to 'LUFA/Drivers/USB/Core/UC3/USBController_UC3.h')
-rw-r--r--LUFA/Drivers/USB/Core/UC3/USBController_UC3.h10
1 files changed, 10 insertions, 0 deletions
diff --git a/LUFA/Drivers/USB/Core/UC3/USBController_UC3.h b/LUFA/Drivers/USB/Core/UC3/USBController_UC3.h
index 4a5d267c8..006e08970 100644
--- a/LUFA/Drivers/USB/Core/UC3/USBController_UC3.h
+++ b/LUFA/Drivers/USB/Core/UC3/USBController_UC3.h
@@ -84,6 +84,16 @@
#error F_USB is not defined. You must define F_USB to the frequency of the clock input to the USB module.
#endif
+ #if (defined(USB_SERIES_UC3A3_AVR) || defined(USB_SERIES_UC3A4_AVR))
+ #if ((F_USB < 12000000) || (F_USB % 12000000))
+ #error Invalid F_USB specified. F_USB must be a multiple of 12MHz for UC3A3 and UC3A4 devices.
+ #endif
+ #else
+ #if ((F_USB < 48000000) || (F_USB % 48000000))
+ #error Invalid F_USB specified. F_USB must be a multiple of 48MHz for UC3A and UC3B devices.
+ #endif
+ #endif
+
/* Public Interface - May be used in end-application: */
/* Macros: */
/** \name USB Controller Option Masks */