ardupilot/ArduCopterMega/command description.txt

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ArduPilotMega 2.0 Commands
Command Structure in bytes
0 0x00 byte Command ID
1 0x01 byte Parameter 1
2 0x02 long Parameter 2
3 0x03 ..
4 0x04 ..
5 0x05 ..
6 0x06 long Parameter 3
7 0x07 ..
8 0x08 ..
9 0x09 ..
10 0x0A long Parameter 4
11 0x0B ..
11 0x0C ..
11 0x0D ..
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Commands below MAV_CMD_NAV_LAST are commands that have a end criteria, eg "reached waypoint" or "reached altitude"
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Command ID Name Parameter 1 Altitude Latitude Longitude
0x10 / 16 MAV_CMD_NAV_WAYPOINT - altitude lat lon
0x11 / 17 MAV_CMD_NAV_LOITER_UNLIM (indefinitely) - altitude lat lon
0x12 / 18 MAV_CMD_NAV_LOITER_TURNS turns altitude lat lon
0x13 / 19 MAV_CMD_NAV_LOITER_TIME time (seconds*10) altitude lat lon
0x14 / 20 MAV_CMD_NAV_RETURN_TO_LAUNCH - altitude lat lon
0x15 / 21 MAV_CMD_NAV_LAND - altitude lat lon
0x16 / 22 MAV_CMD_NAV_TAKEOFF takeoff pitch altitude - -
NOTE: for command 0x16 the value takeoff pitch specifies the minimum pitch for the case with airspeed sensor and the target pitch for the case without.
0x17 / 23 MAV_CMD_NAV_TARGET - altitude lat lon
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May Commands - these commands are optional to finish
Command ID Name Parameter 1 Parameter 2 Parameter 3 Parameter 4
0x70 / 112 MAV_CMD_CONDITION_DELAY - - time (milliseconds) -
0x71 / 113 MAV_CMD_CONDITION_CHANGE_ALT rate (cm/sec) alt (finish) - -
0x72 / 114 MAV_CMD_NAV_LAND_OPTIONS (NOT CURRENTLY IN MAVLINK PROTOCOL)
0x23 MAV_CMD_CONDITION_ANGLE angle speed direction (-1,1) rel (1), abs (0)
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Unexecuted commands > MAV_CMD_NAV_LAST are dropped when ready for the next command < MAV_CMD_NAV_LAST so plan/queue commands accordingly!
For example if you had a string of CMD_MAV_CONDITION commands following a 0x10 command that had not finished when the waypoint was
reached, the unexecuted CMD_MAV_CONDITION and CMD_MAV_DO commands would be skipped and the next command < MAV_CMD_NAV_LAST would be loaded
***********************************
Now Commands - these commands are executed once until no more new now commands are available
Command ID Name Parameter 1 Parameter 2 Parameter 3 Parameter 4
0xB1 / 177 MAV_CMD_DO_JUMP index repeat count
0XB2 / 178 MAV_CMD_DO_CHANGE_SPEED TODO - Fill in from protocol
0xB3 / 179 MAV_CMD_DO_SET_HOME
0xB4 / 180 MAV_CMD_DO_SET_PARAMETER
0xB5 / 181 MAV_CMD_DO_SET_RELAY
0xB6 / 182 MAV_CMD_DO_REPEAT_RELAY
0xB7 / 183 MAV_CMD_DO_SET_SERVO
0xB8 / 184 MAV_CMD_DO_REPEAT_SERVO