[Paparazzi-devel] Tiny13 1.1 / Servo Output

[Matthew Currie]

Group,


 I have been diagnosing my servo output problem on my Tiny13 1.1 for 
some time now.  I put the Tiny13 under a 20-400x digital microscope and 
verified that all the crucial solder joints are great.  I currently have 
the Tiny13 under a DSO and now see that SERV_CLK is sending what looks 
like a reasonable clock, the SERV_RESET is sending a signal, but the 
SERV_DATA line is being held at VCC with no PPM signal present.  This 
now explains why my servos were moving to extremes and binding the 
control surfaces.  I checked the SERV_DATA line all the way to the LPC 
pin and verified it is held high there.  Is there something obvious I am 
missing?  Is this a symptom of a software misconfiguration?  Did 
anything change between Tiny13 and Tiny2 and maybe I have a bit of code 
crossed over?  Thanks guys.


Regards,
Matthew