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-rw-r--r--src/core/ao_usb.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/core/ao_usb.h b/src/core/ao_usb.h
index 35e64e65..1ce4f82f 100644
--- a/src/core/ao_usb.h
+++ b/src/core/ao_usb.h
@@ -137,4 +137,6 @@ struct ao_usb_line_coding {
uint8_t data_bits;
} ;
+extern __pdata uint8_t ao_usb_running;
+
#endif /* _AO_USB_H_ */