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-rw-r--r--demos/AVR/RT-ARDUINOUNO/halconf.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/demos/AVR/RT-ARDUINOUNO/halconf.h b/demos/AVR/RT-ARDUINOUNO/halconf.h
index 074855e72..72c18744d 100644
--- a/demos/AVR/RT-ARDUINOUNO/halconf.h
+++ b/demos/AVR/RT-ARDUINOUNO/halconf.h
@@ -329,6 +329,7 @@
*/
#if !defined(SERIAL_USB_BUFFERS_NUMBER) || defined(__DOXYGEN__)
#define SERIAL_USB_BUFFERS_NUMBER 2
+#endif
/*===========================================================================*/
/* SPI driver related settings. */