Add more include protection macros to give the user warnings when they try to manuall...

[pub/USBasp.git] / LUFA / Drivers / USB / LowLevel / LowLevel.h

diff --git a/LUFA/Drivers/USB/LowLevel/LowLevel.h b/LUFA/Drivers/USB/LowLevel/LowLevel.h
index dc01d24..1a92d47 100644 (file)
--- a/LUFA/Drivers/USB/LowLevel/LowLevel.h
+++ b/LUFA/Drivers/USB/LowLevel/LowLevel.h
@@ -70,6 +70,10 @@
                #endif\r
 \r
        /* Preprocessor Checks and Defines: */\r
+               #if !defined(__INCLUDE_FROM_USB_DRIVER)\r
+                       #error Do not include this file directly. Include LUFA/Drivers/USB.h instead.\r
+               #endif\r
+\r
                #if !defined(F_CLOCK)\r
                        #error F_CLOCK is not defined. You must define F_CLOCK to the frequency of the unprescaled input clock in your project makefile.\r
                #endif\r