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Re: [Paparazzi-devel] solved many problams with my lisa/m


From: Michal Podhradsky
Subject: Re: [Paparazzi-devel] solved many problams with my lisa/m
Date: Tue, 12 Feb 2013 16:09:18 -0700

Hi Michael,

can you please be more specific what did you change on the Aspirin? I.e. which jumper you added and also why?
Because if you keep the BARO_CS pin to constant value(3V) you won't be able to unselect it in case you want to, for example, talk with MPU chip which is on the same bus...
(talking of Aspirin 2.2. http://paparazzi.enac.fr/wiki/File:Aspirin_imu_schematic_V2_2.png)

Thanks for explanation, I am working with Lisa/Lia boards, so I ll be happy to learn more.

Regards
Michal


On Tue, Feb 12, 2013 at 12:23 PM, michael matkov <address@hidden> wrote:
hey everyone !

didn't touched paparazzi for a long time until :
i've got from TR , x3 lisa/m v2.0 with aspirin 2.2-r0

had alot of problams with IMU sensors, hanged start up of the STM32 ,super touch sensitive around the soldered aspirin
and troubled upload firmware with the paparazzi-center (random hangs and errors), i tried to contact with esden and TR but no replay
from both of them... even tough the fast shipping ,i tought all the three lisa DOA ...

then i decided to check by my self :
done some research and the new barometer hangs the SPI bus + garbeging the MPU6... values
removed the trace of that GYRO_SS pin as described at the wiki but no good.
BTW :when i've got the boards shipment ,i quickly soldered the aspirin include the pin that didn't need to be soldered ( see: http://paparazzi.enac.fr/wiki/address@hidden@warning )

all the problems got cleared until i've soldered jumper from the CS of the Barometer to 3.3v

now i feel like i've got new boards ;) fast upload ,fast start up ,and fast PFD lock !

maybe it will help somebody with the same problems
i don't know how or how to start :) can some one add :
if using the hardware setup above ,to pull high stm32 pin PC13 to high trough the c code -> its CS of the new barometer.
i think a future driver for that barometer will do that by the way ,but need to change the wiki to not remove that pad from the aspirin ?

sorry about my english ...

best regards
    matkov michael


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