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-rw-r--r--digital/io/src/cylinder.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/digital/io/src/cylinder.h b/digital/io/src/cylinder.h
index 8b9cb427..f6d7ff58 100644
--- a/digital/io/src/cylinder.h
+++ b/digital/io/src/cylinder.h
@@ -25,4 +25,12 @@
*
* }}} */
+#include "common.h"
+
+/* last state of optical fence */
+extern uint8_t of_state;
+
+/* nb puck in cylinder */
+extern uint8_t nb_puck_cylinder;
+
#endif /* cylinder_h */