Re: [Paparazzi-devel] External Voltage Sensor for Battery Warnings

[Balazs GATI]

Dear Felix,

I just finished the application of the redefined ADC_CHANNEL_VSUPPLY. It 
works great!
For everybody, who would like to apply it: dont forget to complete the 
airframe file with a raw makefile section. In case of a current sensor 
(measures voltage and current) with the following line:
<makefile>
    ap.CFLAGS += -DADC -DUSE_ADC_3 -DUSE_ADC_4
</makefile>
(if you are using different ADC channels, replace the numbers with the 
current ones)

Balazs




2012.01.18. 23:55 keltezéssel, Felix Ruess írta:
> Hi Balazs,
>
> you can add<define name="VoltageOfAdc(adc)" value="(0.0246*adc)"/>
> (with the ratio you need of course to your airframe file (e.g. BAT
> section).
> Then you also need to change the ADC channel that is used to read the
> voltage, e.g.<define name="ADC_CHANNEL_VSUPPLY" value="ADC_4"/>. You
> have to add that to the ap firmware section, so it will be a global
> define and just one in the generated airframe file.
>
> To not get errors because ADC_CHANNEL_VSUPPLY gets redefined, pull
> again from master...
>
> Cheers, Felix
>
> On Sun, Jan 15, 2012 at 7:52 PM,<address@hidden>  wrote:
> > Dear Developer,
> >
> > we are using a TWOG in an EasyGlider for two years, and we are very
> > satisfied with it and very pleased that you make it accessible for all the
> > world.
> >
> > We would ask you for some support now. We changed the airframe to a
> > Trainer 60 with a 6cell 5000mAh LiPo. Because of the higher accu voltage
> > (22.2V) we had to apply a switching power supply to provide power for
> > TWOG. We installed a Sparkfun Current Sensor to the ESC, too. We
> > configured successfully the ADC channels, and now we are able to display
> > the actual motor current and battery voltage on the GCS with a papget.
> > Unfortunately we didn't find the way, how to use the ADC channel of
> > battery voltage for generating the warnings (LOW, CRITICAL, CATASTROPHIC
> > BATT. LEVEL). Is there any way to do it without to change the code
> > directly?
> >
> > Thank you in advance
> >   Balazs
> >
> > Budapest University of Technology and Economics
> > Department of Aircraft and Ships
> >
> >
> > _______________________________________________
> > Paparazzi-devel mailing list
> > address@hidden
> > https://lists.nongnu.org/mailman/listinfo/paparazzi-devel
>
> _______________________________________________
> Paparazzi-devel mailing list
> address@hidden
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--
Balazs GATI, PhD
     Department of Aircraft and Ships
     Budapest University of Technology and Economics

Address:   Budapest
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