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-rw-r--r--apps/px4io/protocol.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/apps/px4io/protocol.h b/apps/px4io/protocol.h
index 6dbe16229..54f2fa27c 100644
--- a/apps/px4io/protocol.h
+++ b/apps/px4io/protocol.h
@@ -109,7 +109,7 @@
#define PX4IO_P_STATUS_ALARMS_SERVO_CURRENT (1 << 2) /* servo current limit was exceeded */
#define PX4IO_P_STATUS_ALARMS_ACC_CURRENT (1 << 3) /* accessory current limit was exceeded */
#define PX4IO_P_STATUS_ALARMS_FMU_LOST (1 << 4) /* timed out waiting for controls from FMU */
-#define PX4IO_P_STATUS_ALARMS_RC_LOST (1 << 5)
+#define PX4IO_P_STATUS_ALARMS_RC_LOST (1 << 5) /* timed out waiting for RC input */
#define PX4IO_P_STATUS_VBATT 4 /* battery voltage in mV */
#define PX4IO_P_STATUS_IBATT 5 /* battery current in cA */