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-rw-r--r--keyboards/hhkb/rn42/suart.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/keyboards/hhkb/rn42/suart.h b/keyboards/hhkb/rn42/suart.h
new file mode 100644
index 0000000000..7d92be0692
--- /dev/null
+++ b/keyboards/hhkb/rn42/suart.h
@@ -0,0 +1,8 @@
+#ifndef SUART
+#define SUART
+
+void xmit(uint8_t);
+uint8_t rcvr(void);
+uint8_t recv(void);
+
+#endif /* SUART */