khoirula / ardupilot-mega

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Inconsistent GPS LED behavior #224

Closed GoogleCodeExporter closed 8 years ago

GoogleCodeExporter commented 8 years ago
(This may be related to issue 221--MediaTek initialization bug)

There are two problems here: the first is that GPS LED reporting is different 
in CLI mode and in Fly mode. 

The second is that GPS lock LED behavior is not correct on power up. Only after 
a warm reset do the LEDs reflect GPS lock.

Here is the observed behavior: 

In CLI mode:
   Waiting for GPS lock: solid green, blinking red. 
   When GPS lock achieved (as shown by MediaTek led): solid green, solid red.

In fly mode (after cold restart):

   Waiting for GPS lock: solid yellow, no other LEDs. 
   When GPS lock achieved: No change (same solid yellow)

In fly mode (after warm restart):

   Waiting for GPS lock: solid yellow
   When GPS lock achieved: solid yellow, solid red

In other words, APM only reports correct GPS status after a warm restart. Also, 
the LEDs are different in CLI mode and Fly mode.

Original issue reported on code.google.com by analogue...@gmail.com on 15 Nov 2010 at 1:48

GoogleCodeExporter commented 8 years ago

Original comment by analogue...@gmail.com on 15 Nov 2010 at 1:48

GoogleCodeExporter commented 8 years ago
Hey Chris,

What rev are you looking at?  Your description is not consisten with what I get 
with the beta branch.

Original comment by dewei...@gmail.com on 15 Nov 2010 at 2:39

GoogleCodeExporter commented 8 years ago
This appears to be MediaTek only. Probably due to the intitialization problem 
mentioned in issue 221.

Original comment by analogue...@gmail.com on 15 Nov 2010 at 6:07

GoogleCodeExporter commented 8 years ago

Original comment by dewei...@gmail.com on 2 Apr 2011 at 3:19