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-rw-r--r--src/modules/px4iofirmware/protocol.h11
1 files changed, 6 insertions, 5 deletions
diff --git a/src/modules/px4iofirmware/protocol.h b/src/modules/px4iofirmware/protocol.h
index 91975f2a0..313084fe9 100644
--- a/src/modules/px4iofirmware/protocol.h
+++ b/src/modules/px4iofirmware/protocol.h
@@ -209,15 +209,16 @@ enum { /* DSM bind states */
#define PX4IO_REBOOT_BL_MAGIC 14662 /* required argument for reboot (random) */
#define PX4IO_P_SETUP_CRC 11 /* get CRC of IO firmware */
- /* 12 occupied by CRC */
+ /* storage space of 12 occupied by CRC */
+#define PX4IO_P_SETUP_FORCE_SAFETY_OFF 12 /* force safety switch into
+ 'armed' (PWM enabled) state - this is a non-data write and
+ hence index 12 can safely be used. */
#define PX4IO_P_SETUP_RC_THR_FAILSAFE_US 13 /**< the throttle failsafe pulse length in microseconds */
-#define PX4IO_P_SETUP_FORCE_SAFETY_OFF 12 /* force safety switch into
- 'armed' (PWM enabled) state */
-#define PX4IO_FORCE_SAFETY_MAGIC 22027 /* required argument for force safety (random) */
+#define PX4IO_FORCE_SAFETY_MAGIC 22027 /* required argument for force safety (random) */
/* autopilot control values, -10000..10000 */
-#define PX4IO_PAGE_CONTROLS 51 /**< actuator control groups, one after the other, 8 wide */
+#define PX4IO_PAGE_CONTROLS 51 /**< actuator control groups, one after the other, 8 wide */
#define PX4IO_P_CONTROLS_GROUP_0 (PX4IO_PROTOCOL_MAX_CONTROL_COUNT * 0) /**< 0..PX4IO_PROTOCOL_MAX_CONTROL_COUNT - 1 */
#define PX4IO_P_CONTROLS_GROUP_1 (PX4IO_PROTOCOL_MAX_CONTROL_COUNT * 1) /**< 0..PX4IO_PROTOCOL_MAX_CONTROL_COUNT - 1 */
#define PX4IO_P_CONTROLS_GROUP_2 (PX4IO_PROTOCOL_MAX_CONTROL_COUNT * 2) /**< 0..PX4IO_PROTOCOL_MAX_CONTROL_COUNT - 1 */