|Subject:||Re: [Paparazzi-devel] Futaba SBUS through R/C connector on Umarim|
|Date:||Mon, 15 Jun 2015 23:05:14 +0200|
|User-agent:||Mozilla/5.0 (X11; Linux i686; rv:31.0) Gecko/20100101 Thunderbird/31.7.0|
Le 14/06/2015 15:00, Joseph Muhlhausen a écrit :
It all depends on the behavior of the converter when the signal is lost. If it keep sending a "failsafe" value, you'll not be able to tell if it is lost, but if the signal becomes null, you'll have the info.
A hack we did some time ago for lpc21 is to use the led signal of the receiver (if the color is changed/tuned off when the signal is lost) and put this to a GPIO input. Then you need to define some stuff to turn this into RC_LOST signal.
And for the airframe (for pin P0.17):
<subsystem name="radio_control" type="ppm">
<define name="PPM_RSSI_IOPIN" value="IO0PIN"/>
<define name="PPM_RSSI_PIN" value="17"/>
<define name="PPM_RSSI_VALID_LEVEL" value="0"/>
I guess it should work, but I don't use Lisa boards
I don't think it works
I never tried, probably a bit annoying....
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