Re: [Paparazzi-devel] V4.9 and BAT value problem

[Eric BAHIER]

Hi felix,

I have "GIT" on systeme to master, 7b7bec44, your last update on 2013-01-25-00-12-52
make clean
make.... some error   "ImportError: no module named yaml"

I can run ./paparazzi... when compiling I have some lib error

I am not very friend with git, today I try to understand him.... I will try!

thanks

Eric

Le 28/01/2013 21:36, Felix Ruess a écrit :

Hi Eric,

I have to wonder: did you even read my previous mail?

Again: the stable v4.2 branch does _NOT_ contain the proposed fix.

So checking out e5b2e9a won't contain it...

It was added in the development branch (master) or the v4.2_vsupply_fix branch in my repo as already described.

If I'm right, then with a VOLTAGE_ADC_B value of 5 you should get an offset of 0.5V (with current v4.2.0_stable-3-ge5b2e9a).

Setting it to 50 should give you an offset of 5V like you would probably expect.

In master and v4.2_vsupply_fix it *should* work to give you a 5V offset with VOLTAGE_ADC_B=5

Cheers, Felix

On Mon, Jan 28, 2013 at 8:19 PM, <address@hidden> wrote:

Hi felix,

I pocedd :
git reset --hard e5b2e9a
make
paparazzi_version.... OK
./paparazzi
clean
upload

Nothing better B value still ignored.

Today I fly with 5 lipo... 21V,
I have a big one, ready to fly in 10 cells lipo... or 12 if necessary.

thank,

Eric


Felix Ruess <address@hidden> a écrit :

Hi Eric,

the latest version is v4.2.0_stable-3-ge5b2e9a

But as I said, this proposed fix is _NOT_ in the stable v4.2 yet, but in
master.
If it works as expected I can backport it to v4.2...

Did you try to set it to some high value like 50?

For convenience I also pushed the potential fix to my github repo on the
v4.2_vsupply_fix branch.
To test it:
git remote add -f flixr https://github.com/flixr/paparazzi.git
git checkout v4.2_vsupply_fix

Cheers, Felix

On Mon, Jan 28, 2013 at 7:31 PM, <address@hidden> wrote:

Hi Felix,

Today, I make a git pull.... gitk
I am on
xxxxxx:~/paparazzi$ ./paparazzi_version
v4.2.0_stable-2-gd155873

I suppose is the uptodate version?

with any valu in "VOLTAGE_ADC_B".... the GCS value stay the same (almost
ok on the real useable value)

        <define name="VOLTAGE_ADC_A"            value="0.0081"  unit="V"/>
     <!--theorique  0.0074 +1.6-->

        <define name="VOLTAGE_ADC_B"            value="5"       unit="V"/>
        <define name="VoltageOfAdc(adc)"        value ="(VOLTAGE_ADC_A *
adc + VOLTAGE_ADC_B )"/>

Many thanks,


Eric



Felix Ruess <address@hidden> a écrit :

 Hi Eric,

Regarding VoltageOfAdc:

Are you sure it's not changing anything at all?
As electrical.vsupply is in decivolts you need to define VOLTAGE_ADC_B to
20 if you want an offset of 2V.
Could you please check this?
I think fixed this in master so you can specify that in V as it should

be. (commit d266565227<https://github.com/**paparazzi/paparazzi/commit/*
*d266565227bb81f071662d104e4ccf**0244ff87df<https://github.com/paparazzi/paparazzi/commit/d266565227bb81f071662d104e4ccf0244ff87df>

>

)
If that works I'll backport the fix to v4.2 as well.

did you try that fix in master for the VOLTAGE_ADC_B?
If that does what you want/expect I'll backport it to v4.2 and we can make
a minor maintenance release..

Cheers, Felix


On Wed, Jan 9, 2013 at 12:39 AM, Felix Ruess <address@hidden>
wrote:

 Hi all,

so the ADC should now work again properly in master.
If the radio_control/ppm subsystem with input on SERVO6 (default) is used
the ADC is now automatically configured to use TIM1 instead of TIM2.

(fixed with commit ad81033ed<https://github.com/**
paparazzi/paparazzi/commit/**ad81033ed3573027b137fb86072893**b0857c133d<https://github.com/paparazzi/paparazzi/commit/ad81033ed3573027b137fb86072893b0857c133d>

>

)

If anyone has a good idea on how to automatically check and configure if
the same hardware resources are needed by several subsystems, ideas are
very welcome.

Cheers, Felix


On Tue, Jan 8, 2013 at 11:55 PM, Felix Ruess <address@hidden
>wrote:

 Hi Eric,

Stephen probably found the problem with adc in master: radio_control/ppm
on servo6 and adc both use TIM2
So it e.g. works if you use UART1_RX as RADIO_CONTROL_PPM_PIN (uses TIM1
for that).
In the meantime you could add <define name="USE_AD_TIM1"/> to your
firmware section if you use the ppm subsystem with the default input pin
(servo6).
We are still working on a good solution to configure that better.

Regarding VoltageOfAdc:
Are you sure it's not changing anything at all?
As electrical.vsupply is in decivolts you need to define VOLTAGE_ADC_B
to
20 if you want an offset of 2V.
Could you please check this?

I think fixed this in master so you can specify that in V as it should

be. (commit d266565227<https://github.com/**paparazzi/paparazzi/commit/
**d266565227bb81f071662d104e4ccf**0244ff87df<https://github.com/paparazzi/paparazzi/commit/d266565227bb81f071662d104e4ccf0244ff87df>

>

)
If that works I'll backport the fix to v4.2 as well.

Cheers, Felix


On Tue, Jan 8, 2013 at 10:46 PM, <address@hidden> wrote:

 Hi felix,

V4.2 solve my BAT problem,

a small bug still aliv :


 <section name="BAT">
<define name="VOLTAGE_ADC_A" value="0.0080"     unit="V"/>
 <!--theorique  0.0074 +1.6-->
    <define name="VOLTAGE_ADC_B" value="2"      unit="V"/>


<define name="VoltageOfAdc(adc)" value ="(VOLTAGE_ADC_A * adc +
VOLTAGE_ADC_B )"/>
  <define name="CATASTROPHIC_BAT_LEVEL" value="16." unit="V"/>
    <define name="CRITIC_BAT_LEVEL" value="17." unit="V"/>
    <define name="LOW_BAT_LEVEL" value="17.5" unit="V"/>
    <define name="MAX_BAT_LEVEL" value="23" unit="V"/>
  </section>


I can change "VOLTAGE_ADC_B" to any value, the value on the ground
still
 the same.


Best regards,

Eric



Felix Ruess <address@hidden> a écrit :

 Hi Eric,

as I said the bug was introduced when we switched from the stm lib to
libopencm3 in master... there is no point in wasting effort to find at
what
time the bug was introduced (is fine in v4.0 and v4.2 as there we
didn't
port ADC to libopencm3 yet).
We rather need to find which other subsystem "destroys" the adc
initialization/settings, or if there is some timing/sync issue or what
ever...

I would also recommend to use v4.2 instead of v4.0 ....

Regarding the calculation of the battery value (via VoltageOfAdc(x)):
is B
defined? Can you post the relevant part of your airframe file?
It should work fine if it's defined properly, e.g.

https://github.com/paparazzi/****paparazzi/blob/v4.2/conf/**<https://github.com/paparazzi/**paparazzi/blob/v4.2/conf/**>
airframes/examples/twog_****analogimu.xml#L94<https://**

github.com/paparazzi/**paparazzi/blob/v4.2/conf/**
airframes/examples/twog_**analogimu.xml#L94<https://github.com/paparazzi/paparazzi/blob/v4.2/conf/airframes/examples/twog_analogimu.xml#L94>
>


Cheers, Felix


On Mon, Jan 7, 2013 at 11:03 PM, Eric BAHIER <address@hidden>
wrote:

  Hi felix,

I have make many test to try to define when the bug appear.

Today I have fly on version    v4.0.1_stable-8-gbe4f487-dirty
2012-08-30

On this version evrything smell good. My airframe fixwings.xml file
was ok
for IR, it need some modification to be perfect in IMU. Today man and
aut1
was OK, AUTO2 was "full camicase version".

On V4.0.1 the bat value is fonctional.
If I try to use BATVALUE= Amul*adc+B. A coef is ok, B coef is  not
functional. To try it , Iput it to 10 (volts)... nothing change on
BAT
on
the ground station.

I will have two days with flying weather.... end of week will be with
dirty weather... It will be the perfect weather to test some
versionsssss
and try where is the bug in the GIT tree....


Thank for your help,

best regards




Le 07/01/2013 22:32, Felix Ruess a écrit :

Hi Eric,

 it should work fine in the stable releases v4.0 and v4.2. In master
(v4.9) we completely switched to libopencm3 and it seems there were
some
regressions introduced when porting the drivers.
Eduardo also reported that the problem only occurs in his setup if he
is
using the radio_control ppm subsystem, but not with the spektrum
subsystem.
It is probably related to some low level initialization of one of the
drivers...

 Still hoping that Stephen will have some time to look at this ;-)

 Cheers, Felix


On Tue, Dec 18, 2012 at 1:27 PM, Eric BAHIER <address@hidden
>wrote:

  Hi felix,

Thanks to look at my bug....
I test with 4 targets:
        Lisa/L 1.0 without alone (no GPS, no IMU.....) just the Xbee
        Lisa/L 1.0 full ready to fly (GPS,IMU,Xbee, Rx)
        Lisa/M 1.0 full ready to fly (GPS,IMU,Xbee, Rx)
        booz ready to fly (GPS,IMU,Xbee, Rx)

On my side I work on a lab PC, actualy in paparazzi V4.0.1... it
smell
good.
I will verifiy evrything on 4.0.1.... and make the update step by
step to
try to find when the bug appear, I will send you his birthday.....

Last time I play with GIT with limited updated, it was not complete
succesfull.... I will win to GIT!!!



Yesterday I look in source code... batcheker.c.......... I can not
see
anything.
My feeling is a time schedule problem, I suppose we "forgot" to
restart
the ADC processing, the ADC value stay the same evrytime after the
first
read....
Today it is only a idea, a feeling......

many thaks,

Eric


Le 18/12/2012 13:04, Felix Ruess a écrit :

Hi Eric,

 it works on my Lisa/L 1.0 (no IMU connected at the moment).
I tested it on the Lisa/M 1.0 as well and it indeed doesn't work
correctly, and it seems that there is some problem with proper adc
setup if
other peripherals are used as well.
It works when adding adc_init(); electrical_init(); to the end of
main_init()...
The test_adc target works fine.
 Couldn't find the actual problem yet... Stephen, Esden, any
ideas/time
to look into this?

 Created an issue for it:

https://github.com/paparazzi/****paparazzi/issues/339<https://github.com/paparazzi/**paparazzi/issues/339>
<https://**github.com/paparazzi/**paparazzi/issues/339<https://github.com/paparazzi/paparazzi/issues/339>

>


 Cheers, Felix


On Mon, Dec 17, 2012 at 12:35 PM, Eric BAHIER <
address@hidden
>wrote:

 Hi,

I try to kill my bug of BAT value on GCS.... it stil alive.....

I have 2 problems,
    To have a good value (8V) I need to modify the adc
value.....with
the documented function

 <section  name="BAT">
    ...
    <define  name="VOLTAGE_ADC_A"  value="0.011"/>
    <define  name="VOLTAGE_ADC_B"  value="0.635"/>
    <define  name="VoltageOfAdc(adc)"  value ="(VOLTAGE_ADC_A *
adc +
VOLTAGE_ADC_B)"/>
  </section>

With this my first mistake is solve (or work around.... perhaps it
is a
visible part of th iceberg....)

My real bug (I can not find any solution or work arround)

The BAT value is correctly read at power up, GCS give the good
infomation (if I use VoltageOfAdc...), Message windows give also
the
good
value.
If the BAT value change (LAB power supply can do it  easly), the
GCS
an
Message value still th power up value... In Message windows the
message is
updated, but with the power-up value....


This morning I have take My LISA/M, I have used the standard
fraser.....xml, I have juste change the IMU to my version, and
comment the
prog mode to use the standard jtag interface.

This mornig I have updated my config (git pull, make clean, make)
My
paparazzi version v4.9_devel-337-g34b46d2-dirty.

Anyone I have any idea where I have make the mistake......


Many thanks,

Eric

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Tel : 33 4 67 59 92 53
Fax : 33 9 59 15 92 53

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Tel : 33 4 67 59 92 53
Fax : 33 9 59 15 92 53

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34 980 Montferrier sur LEZ
France

Tel : 33 4 67 59 92 53
Fax : 33 9 59 15 92 53

****************************************


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Tel : 33 4 67 59 92 53
Fax : 33 9 59 15 92 53
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