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-rw-r--r--src/modules/px4iofirmware/protocol.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/modules/px4iofirmware/protocol.h b/src/modules/px4iofirmware/protocol.h
index bd777428f..874dc0c39 100644
--- a/src/modules/px4iofirmware/protocol.h
+++ b/src/modules/px4iofirmware/protocol.h
@@ -115,6 +115,7 @@
#define PX4IO_P_STATUS_FLAGS_SAFETY_OFF (1 << 12) /* safety is off */
#define PX4IO_P_STATUS_FLAGS_FMU_INITIALIZED (1 << 13) /* FMU was initialized and OK once */
#define PX4IO_P_STATUS_FLAGS_RC_ST24 (1 << 14) /* ST24 input is valid */
+#define PX4IO_P_STATUS_FLAGS_RC_SUMD (1 << 15) /* SUMD input is valid */
#define PX4IO_P_STATUS_ALARMS 3 /* alarm flags - alarms latch, write 1 to a bit to clear it */
#define PX4IO_P_STATUS_ALARMS_VBATT_LOW (1 << 0) /* [1] VBatt is very close to regulator dropout */