Add additional preprocessor sanity checks for the XMEGA platform based on the USB...

diff --git a/LUFA/Drivers/USB/Core/XMEGA/Device_XMEGA.h b/LUFA/Drivers/USB/Core/XMEGA/Device_XMEGA.h
index 268fe95..4d75cc2 100644 (file)
--- a/LUFA/Drivers/USB/Core/XMEGA/Device_XMEGA.h
+++ b/LUFA/Drivers/USB/Core/XMEGA/Device_XMEGA.h
@@ -92,10 +92,12 @@
                         */
                        #define USB_DEVICE_OPT_LOWSPEED        (1 << 0)
 
-                       /** Mask for the Options parameter of the \ref USB_Init() function. This indicates that the
-                        *  USB interface should be initialized in full speed (12Mb/s) mode.
-                        */
-                       #define USB_DEVICE_OPT_FULLSPEED       (0 << 0)
+                       #if (F_USB > 6000000)
+                               /** Mask for the Options parameter of the \ref USB_Init() function. This indicates that the
+                                *  USB interface should be initialized in full speed (12Mb/s) mode.
+                                */
+                               #define USB_DEVICE_OPT_FULLSPEED   (0 << 0)
+                       #endif
                        //@}
 
                        #if (!defined(NO_INTERNAL_SERIAL) || defined(__DOXYGEN__))

diff --git a/LUFA/Drivers/USB/Core/XMEGA/USBController_XMEGA.c b/LUFA/Drivers/USB/Core/XMEGA/USBController_XMEGA.c
index ffdca3a..844ef65 100644 (file)
--- a/LUFA/Drivers/USB/Core/XMEGA/USBController_XMEGA.c
+++ b/LUFA/Drivers/USB/Core/XMEGA/USBController_XMEGA.c
@@ -105,11 +105,15 @@ void USB_Disable(void)
 
 void USB_ResetInterface(void)
 {
+       #if defined(USB_DEVICE_OPT_FULLSPEED)
        if (USB_Options & USB_DEVICE_OPT_LOWSPEED)
          CLK.USBCTRL = (((F_USB / 6000000) - 1) << CLK_USBPSDIV_gp);
        else
          CLK.USBCTRL = (((F_USB / 48000000) - 1) << CLK_USBPSDIV_gp);
-
+       #else
+       CLK.USBCTRL = (((F_USB / 6000000) - 1) << CLK_USBPSDIV_gp);
+       #endif
+       
        if (USB_Options & USB_OPT_PLLCLKSRC)
          CLK.USBCTRL |= (CLK_USBSRC_PLL_gc   | CLK_USBSEN_bm);
        else

diff --git a/LUFA/Drivers/USB/Core/XMEGA/USBController_XMEGA.h b/LUFA/Drivers/USB/Core/XMEGA/USBController_XMEGA.h
index 1cdb6f0..25402e8 100644 (file)
--- a/LUFA/Drivers/USB/Core/XMEGA/USBController_XMEGA.h
+++ b/LUFA/Drivers/USB/Core/XMEGA/USBController_XMEGA.h
@@ -95,7 +95,7 @@
                        #error F_USB is not defined. You must define F_USB to the frequency of the unprescaled USB controller clock in your project makefile.
                #endif
 
-               #if (F_USB % 6000000)
+               #if ((F_USB % 6000000) || (F_USB < 6000000))
                        #error Invalid F_USB specified. F_USB must be a multiple of 6MHz for USB Low Speed operation, and a multiple of 48MHz for Full Speed operation.
                #endif