Hello Eric, to use MKK esc you
need some lines in airframe file:
...
...
this command put some delay in ESC startup
communication.
About MAG initialization, i have the same
issue in my TWOG + 10DOF IMU with HMC5843;
To solve this i put a little delay in MAG
initialization.
Put a issue about this problem on github.
regards
> Date: Tue, 24 Jul 2012 17:30:24
+0200
> From:
address@hidden
> To:
address@hidden
> Subject: [Paparazzi-devel] I2C
startup on lisa/L
>
> Hi,
>
> I have received a new Aspirin2.0,
with the lisa/L adaptator, it is realy
> better tha my...... I will rework on
it!!!
>
> Bur I have some problems:
>
> On power-up the mag (5883 on I2C)
does not start one time on 5 try. 95%
> of the powerup test the mkk
controlers does not start.
>
> If I reset trought the jtag (reprog
the cpu) no problem 100% good power
> up and the MAG and the MKK run
correctly.
>
> The other way is to power-up, the MKK
led are on, reset the STM32 (CC
> on the reset cap, C9) the MKK red
leds are OFF. I have change C9 from
> 100nF to 1µF, the problem still
present.
>
> With logic analyzer, when the MKK
fail, we can see 4 acces(to the 4 mkk
> adress) without ACK, then the STM32
make only READ acces to the MKK....
>
> Probably we try to early to
config/write to the MKKK, they are not
"wake
> up", and the STM32 driver goes in an
aproximative state
>
> On lisa/M with aspirin 1.5, some time
the mag hang to at power up.
>
> Some one have seen this problems?
>
> Eric
>
>
>
>
>
>
> Le 20/07/2012 16:30, Eric BAHIER a
écrit :
> > Hello,
> >
> > I continue to work o my
problemsss with Lisa/L and Aspirin 1.5like
> > I have solve some problems, wire
connection length, and decoupling
> > capa....
> >
> > With the last GIT (V3.9) (with
aspirin.c from july 19from Christophe).
> > I have from 20sec to 5 minutes
of stay in live I2C.
> > I have connect the logic
analyzer on the I2C (SDA-SCL) and on
Gyro-int
> > and Mag-int.
> >
> > The software read (@68) the gyro
when the interrupt occur, it "smell"
> > perfect. each interrupt is
followed by read cycle, then the interrupt
> > request is clear. the interrupt
remain every 1.8 ms.
> >
> > Concerning the MAG (@1E) the
software acces it every time, with or
> > without interrupt.....
> > The MAG is able to give new
measurement at 75hz (13ms), the interrupt
> > request is present every 13ms,
same as the specs.
> > But the software read all the
time.... evry about....400µsec, we have
> > 100µs free time between the end
a read, and the beginning of the
> > follow on.
> >
> > on lisa/M the stability is
(probably) better, but some time the MAG
> > does not run....
> >
> >
> > thank for your help,
> >
> > regards
> >
> > Eric
> >
> >
>
> --
> ************************************
> Lez Concept EURL
>
> Eric BAHIER
> 15 chemin neuf
> 34 980 Montferrier sur LEZ
> France
>
> Tel : 33 4 67 59 92 53
> Fax : 33 9 59 15 92 53
> ************************************
>
>
>
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