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-rw-r--r--Projects/USBtoSerial/makefile1
1 files changed, 1 insertions, 0 deletions
diff --git a/Projects/USBtoSerial/makefile b/Projects/USBtoSerial/makefile
index a87f30320..b77b6b654 100644
--- a/Projects/USBtoSerial/makefile
+++ b/Projects/USBtoSerial/makefile
@@ -121,6 +121,7 @@ LUFA_OPTS += -D FIXED_CONTROL_ENDPOINT_SIZE=8
LUFA_OPTS += -D FIXED_NUM_CONFIGURATIONS=1
LUFA_OPTS += -D USE_FLASH_DESCRIPTORS
LUFA_OPTS += -D USE_STATIC_OPTIONS="(USB_DEVICE_OPT_FULLSPEED | USB_OPT_REG_ENABLED | USB_OPT_AUTO_PLL)"
+LUFA_OPTS += -D INTERRUPT_CONTROL_ENDPOINT
# Create the LUFA source path variables by including the LUFA root makefile