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-rw-r--r--digital/io-hub/src/apbirthday/top.hh8
1 files changed, 8 insertions, 0 deletions
diff --git a/digital/io-hub/src/apbirthday/top.hh b/digital/io-hub/src/apbirthday/top.hh
index 95f20a44..09a1b365 100644
--- a/digital/io-hub/src/apbirthday/top.hh
+++ b/digital/io-hub/src/apbirthday/top.hh
@@ -24,8 +24,16 @@
//
// }}}
+/// Test whether there is an obstacle blocking in the given direction.
+bool
+top_follow_blocking (int dir_sign);
+
/// Update external consign when following cake.
void
top_update ();
+/// Generate TOP FSM events, return true if one event handled.
+bool
+top_fsm_gen_event ();
+
#endif // top_hh