{"action":"created","issue":{"url":"https://api.github.com/repos/mavlink/mavros/issues/461","repository_url":"https://api.github.com/repos/mavlink/mavros","labels_url":"https://api.github.com/repos/mavlink/mavros/issues/461/labels{/name}","comments_url":"https://api.github.com/repos/mavlink/mavros/issues/461/comments","events_url":"https://api.github.com/repos/mavlink/mavros/issues/461/events","html_url":"https://github.com/mavlink/mavros/issues/461","id":124312525,"number":461,"title":"Mavros topic not publishing on ArduCopter","user":{"login":"PenguinCheng","id":11533179,"avatar_url":"https://avatars.githubusercontent.com/u/11533179?v=3","gravatar_id":"","url":"https://api.github.com/users/PenguinCheng","html_url":"https://github.com/PenguinCheng","followers_url":"https://api.github.com/users/PenguinCheng/followers","following_url":"https://api.github.com/users/PenguinCheng/following{/other_user}","gists_url":"https://api.github.com/users/PenguinCheng/gists{/gist_id}","starred_url":"https://api.github.com/users/PenguinCheng/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/PenguinCheng/subscriptions","organizations_url":"https://api.github.com/users/PenguinCheng/orgs","repos_url":"https://api.github.com/users/PenguinCheng/repos","events_url":"https://api.github.com/users/PenguinCheng/events{/privacy}","received_events_url":"https://api.github.com/users/PenguinCheng/received_events","type":"User","site_admin":false},"labels":[{"url":"https://api.github.com/repos/mavlink/mavros/labels/question","name":"question","color":"cc317c"}],"state":"closed","locked":false,"assignee":null,"milestone":null,"comments":10,"created_at":"2015-12-30T07:03:48Z","updated_at":"2016-02-24T18:27:45Z","closed_at":"2016-01-28T10:56:23Z","body":"We are using the mavros library to connect with pixhawk(hardware). Our firmware is APM:Copter V3.4-dev and I launch the mavros code using:\r\n----------------------------------------------------------------\r\nroslaunch mavros apm2.launch\r\n-----------------------------------------------------------------\r\nIt all seems good. And I can see the topic list as:\r\n-----------------------------------------------------------------\r\n/diagnostics\r\n/mavlink/from\r\n/mavlink/to\r\n/mavros/battery\r\n/mavros/fix\r\n/mavros/gps_vel\r\n/mavros/imu/atm_pressure\r\n/mavros/imu/data\r\n/mavros/imu/data_raw\r\n/mavros/imu/mag\r\n/mavros/imu/temperature\r\n/mavros/mission/waypoints\r\n/mavros/radio_status\r\n/mavros/rc/in\r\n/mavros/rc/out\r\n/mavros/rc/override\r\n/mavros/state\r\n/mavros/time_reference\r\n/rosout\r\n/rosout_agg\r\n...\r\n--------------------------------------------------------------------------\r\nHowever, I can just get topics like /mavros/state, /diagnostics, and I can't get other topics when I run the command like:\r\n-------------------------------------------------------------------------------------------------------------\r\nrostopic echo /mavros/imu/data rostopic echo /mavros/global_position/raw/fix\r\n...\r\n-------------------------------------------------------------------------------------------------------------\r\nI Armed the motors and still can't get such topics. It seems that mavros publishs no data on those topics.\r\nAll these steps are correct in SITL with no issues. And I'm trying to do this on real Copter, but encountered this issues. Can anybody help?\r\n"},"comment":{"url":"https://api.github.com/repos/mavlink/mavros/issues/comments/188394213","html_url":"https://github.com/mavlink/mavros/issues/461#issuecomment-188394213","issue_url":"https://api.github.com/repos/mavlink/mavros/issues/461","id":188394213,"user":{"login":"vooon","id":1023568,"avatar_url":"https://avatars.githubusercontent.com/u/1023568?v=3","gravatar_id":"","url":"https://api.github.com/users/vooon","html_url":"https://github.com/vooon","followers_url":"https://api.github.com/users/vooon/followers","following_url":"https://api.github.com/users/vooon/following{/other_user}","gists_url":"https://api.github.com/users/vooon/gists{/gist_id}","starred_url":"https://api.github.com/users/vooon/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/vooon/subscriptions","organizations_url":"https://api.github.com/users/vooon/orgs","repos_url":"https://api.github.com/users/vooon/repos","events_url":"https://api.github.com/users/vooon/events{/privacy}","received_events_url":"https://api.github.com/users/vooon/received_events","type":"User","site_admin":false},"created_at":"2016-02-24T18:27:45Z","updated_at":"2016-02-24T18:27:45Z","body":"I'm do not know what DroneAPI uses for that parameter. Check what messages available by QGC."}}