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

[Refik Sever]

Hello, 

Thank you very much for your suggestions. 

Best regards,
Refik

>Message: 2
>Date: Wed, 24 Jul 2013 09:18:37 -0300
>From: Gerard Toonstra <address@hidden>
>To: address@hidden
>Subject: Re: [Paparazzi-devel] how to disable failsafe in orange
>Message-ID:
>       <address@hidden>
>Content-Type: text/plain; charset="utf-8"

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


>Message: 3
>Date: Wed, 24 Jul 2013 14:31:46 +0200
>From: Felix Ruess <address@hidden>
>To: Paparazzi devel list <address@hidden>
>Subject: Re: [Paparazzi-devel] how to disable failsafe in orange
>Message-ID:
>       <address@hidden>
>Content-Type: text/plain; charset="utf-8"
>
Hi,

If I remember correctly the ppm encoder will shut off the ppm output if the
throttle channel (3) exceeds the normal values (i.e. you programmed a very
high failsafe value in your receiver).
Have a look at the configuration of the ppm encoder:
https://github.com/paparazzi/ppm-encoder/blob/master/sw/ppm_encoder/servo2pp
m_settings.h

Cheers, Felix


On Wed, Jul 24, 2013 at 2:18 PM, Gerard Toonstra <address@hidden>wrote:

>
> 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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>> https://lists.nongnu.org/mailman/listinfo/paparazzi-devel
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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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>> i-devel/attachments/20130723/4466ae83/attachment.html>
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>
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