Sealevel altitude
Hi, I found very useful when my OSD was minimOSD, where is a way to get on screen sealevel altitude? As far as I know, this information is provided by GPS, isn´t it?
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Hi, I found very useful when my OSD was minimOSD, where is a way to get on screen sealevel altitude? As far as I know, this information is provided by GPS, isn´t it?
7 replies
3dsky - Flying with the best
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Look for altitude in gui, you can choose from absolute, relative or both to be displayed, scale type 0 for above sealevel alt or 1 for relative alt.
drashiel
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Thanks for your response 3dsky. I configured relative altitude and absolute altitude on be displayed, but both of them shows same value, altitude from ground (absolute must be arround 720 meters but got 0 value on ground).
I checked using Mission Planner and shows correct both of them, altitude from sealevel and ground.
I´m using APM 3.2.
Regards.
drashiel
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i try disabbling GPS2 (since I have not on board) but no luck. Another thing I tried is reconfigure SR0 and SR1 parameters, but with minimOSD was working fine.
Somebody has altitude absolute and relative with firmware 10?
Regards.
3dsky - Flying with the best
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Works for me, try my config file, maybe you've missed something.
drashiel
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I was looking your config and looks like mine, I´ll try with your config to test.
I do some research comparing with minimOSD since was working fine with my setup:
MinimOSD has two versions, one for plane and other for copter (I´m on a copter), why?
Looking on code I found this line to get alt from gps on minim plane version:
https://github.com/marcmerlin/ ... k.ino
osd_alt = mavlink_msg_vfr_hud_get_alt(&msg);
But for copter is slightly diferent:
https://github.com/marcmerlin/ ... k.ino
osd_alt_gps = mavlink_msg_gps_raw_int_get_alt(&msg) / 1000.0f;
Looking inside playuav code found this:
osd_alt = mavlink_msg_vfr_hud_get_alt(&msg);
Wow, looks like plane version, but for copter the way to get alt is not same.
So I suspect gps absolute alt is on different frames depending what APM version runs on the board.
What do you think?
drashiel
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Finally add some changes to code and made my custom firmware that works fine, now I get sealevel altitude reported from GPS.
Probably other people running copters have same problem like me, I could send my compiled version if you want. Send me a message and send as soon as I can.
Regards.
3dsky - Flying with the best
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ool, I have a second osd for my copter, I didn't install it yet, will do tomorrow and see if it works.