Re: [Paparazzi-devel] how to disable failsafe in orange

[Gerard Toonstra]

Hi Refik,

My info was incorrect, sorry about that.

The difference here is that it's a different failsafe 'switch'. See the types of switches at the top in: http://paparazzi.enac.fr/wiki/Failsafe
( note the important! BUT! If you set the failsafe value of the channel used for Mode 
control(Manual/Auto1/Auto2) to the value which commands Auto2, 
then 
paparazzi will switch automaticaly to Auto2 mode in case of RC 
connection lost.
" ).

So in my setup I'm actually setting the switch to AUTO2 for the failsafe condition.


In your case it's probably switching to AUTO2 because the servo signal for throttle is out of range in the radio file (which is thus another thing that could trigger 
AUTO2 conditions). It is still sending valid packets though in the radio module, which only switches to RC_LOST mode if there are no pulses coming in,
which is only valid for the first type of switch.


I don't think you can force RC_LOST mode if the radio pulses are out of the set range, but my knowledge doesn't go that far.
The effect in the end is the same.


Thus, I'd change the throttle value back to what it was in failsafe and use the mode switch in "AUTO2" instead. 


If the rx sends out crappy pulses, then hopefully an upgrade to the firmware remedies that. I can't think of anything you could sensibly do otherwise 
to prevent that.

Rgds,

Gerard

On Wed, Jul 24, 2013 at 8:47 AM, Refik Sever <address@hidden> wrote:

Hi,

@eduardo:
Actually we bought the orange openlrs 433Mhz receiver from HK and we haven't
change the firmware yet. I learned from your email that the receiver can
give ppm output. Maybe we can try to program it later when we have time.

@gerard:
I tried your suggestion and it works. Now, when I switch off the
transmitter, it goes to auto2. However, it does not go into RC_LOST state.
Do I need to change the radio xml file in order to do that?

Another problem is, when I re open the transmitter while the receiver is in
failsafe, it goes to auto1 and gives 35% throttle for 2 seconds. Then it
goes back to auto2. It seems that in the boot sequence of the transmitter,
it sends undesired values. Is there a way to avoid it?

Best regards,
Refik


Message: 2
Date: Tue, 23 Jul 2013 19:56:51 -0300
From: Eduardo lavratti <address@hidden>
To: Paparazzi developer forum <address@hidden>
Subject: Re: [Paparazzi-devel] how to disable failsafe in orange
        openlrs 433Mhz receiver
Message-ID: <address@hidden>
Content-Type: text/plain; charset="iso-8859-1"

First of all, way not you use the CPPM of openLRS ?

From: address@hidden
To: address@hidden
Date: Tue, 23 Jul 2013 22:46:40 +0000
Subject: [Paparazzi-devel] how to disable failsafe in orange openlrs 433Mhz
receiver







Dear all,



We are using orange openLRS 433 MHz Tx and Rx module with ER9x transmitter.
We also use 8ch ppm encoder. When we switch off the transmitter power, the
receiver goes into failsafe. Therefore, the autopilot does not understand
that RC is lost.



Does anybody know how to disable failsafe in this receiver?



Regards,

Refik





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Message: 3
Date: Tue, 23 Jul 2013 20:07:32 -0300
From: Gerard Toonstra <address@hidden>
To: address@hidden
Subject: Re: [Paparazzi-devel] how to disable failsafe in orange
        openlrs 433Mhz receiver
Message-ID:
        <address@hidden>
Content-Type: text/plain; charset="utf-8"

The Orange saves a failsafe position, correct?

You can distinguish failsafes by increasing tx range to -125% or less on
throttle, such that the throttle value is something under 1000us.
This is then set as failsafe. Then decrease the range to the normal -100%.
When you set throttle to zero, it works as normal.

When you turn the radio off, the failsafe value is sent, which then triggers
the AP for RC lost condition, assuming you have it configured correctly
there.

G>


On Tue, Jul 23, 2013 at 7:46 PM, Refik Sever
<address@hidden>wrote:

>  Dear all,
>
> We are using orange openLRS 433 MHz Tx and Rx module with ER9x
> transmitter. We also use 8ch ppm encoder. When we switch off the
> transmitter power, the receiver goes into failsafe. Therefore, the
> autopilot does not understand that RC is lost.
>
> Does anybody know how to disable failsafe in this receiver?
>
> Regards,
> Refik
>
> _______________________________________________
> Paparazzi-devel mailing list
> address@hidden
> https://lists.nongnu.org/mailman/listinfo/paparazzi-devel
>
>
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