Re: [Paparazzi-devel] Sensirion SHT75 on APOGEE

[Felix Ruess]

Thanks for testing, merged to master.

On Mon, May 19, 2014 at 10:28 PM, Andreas Philipp <address@hidden> wrote:

Hi,

thanks to Felix the SHT75 sensor is now (git checkout sht75_gpio) working also for the STM-boards (tested for Apogee). Including the following into the airframe file:

--------------------------------------------------------
<modules>
   <load name="humid_sht.xml">
      <define name="SHT_DAT_GPIO" value="GPIOB,GPIO1"/>
      <define name="SHT_SCK_GPIO" value="GPIOC,GPIO5"/>
   </load>
</modules>
--------------------------------------------------------

allows to use molex connectors prepared for the UMARIM-Lite (as described at: http://wiki.paparazziuav.org/wiki/SUMO) on the Apogee AUX connector. Works out of the box including the humidity and air temperature messages like a charme. Great!

Thanks again!

Cheers,
Andreas

Am 18.05.2014 21:42, schrieb philipan:

Hi all,

thanks a lot for information!
Felix, I will report on testing the new code next week, thanks a lot so
far!

Cheers,
Andreas

Am 17.05.2014 00:13, schrieb Felix Ruess:

Hi,

quickly converted it to the gpio interface, ready to test:
https://github.com/paparazzi/paparazzi/pull/721

Cheers, Felix


On Fri, May 16, 2014 at 11:07 PM, Felix Ruess <address@hidden> wrote:

Hi,

if the timing of the bitbanging is not a problem it should be fairly easy
to rewrite the driver to use mcu_periph/gpio (which is the same on lpc21
and stm32) instead of direct register access...

Cheers, Felix


On Fri, May 16, 2014 at 11:01 PM, Martin Mueller <address@hidden> wrote:

Hi,

the SHT75 driver would need some changes to work with any non-LPC based
autopilot. It uses the LPCs GPIO registers directly in humid_sht.h as the
SHT75 only supports a proprietary serial protocol, close but not exactly
I2C. You can use the SHT25 which is genuine I2C.

Martin


On 05/16/2014 09:55 AM, Gautier Hattenberger wrote:

Hi,

This module is only for LPC based boards (umarim, tiny). You can try to
use humid_sht_i2c.xml which seems to be for SHT25, no idea if it also
works on SHT75.

Gautier


Le 16/05/2014 09:00, Andreas Philipp a écrit :

Dear list,

trying to compile an air frame file for the APOGEE including the
module humid_sht.xml (for the Sensirion SHT75 humidity and temperature
sensor described at
http://wiki.paparazziuav.org/wiki/Module/Sensirion_SHT75) like this:

---------------------------------------------------------------------
<modules>
[...]
    <load name="humid_sht.xml"/>
</modules>

<firmware name="fixedwing">
     <target name="sim" board="pc"/>
     <target name="ap" board="apogee_1.0_chibios"/>
[...]
  </firmware>

---------------------------------------------------------------------

ends in:

---------------------------------------------------------------------
[...]
Compiling humid_sht.c
modules/meteo/humid_sht.c:10:21: fatal error: LPC21xx.h: No such file
or directory
  #include "LPC21xx.h"
                      ^
compilation terminated.
make[1]: ***
[/home/philipan/paparazzi/var/aircrafts/es_apogee/ap/obj/
modules/meteo/humid_sht.o]
Error 1
make[1]: Leaving directory `/home/philipan/paparazzi/sw/airborne'
make: *** [ap.compile] Error 2
make: Leaving directory `/home/philipan/paparazzi'

FAILED 'make -C /home/philipan/paparazzi -f Makefile.ac
AIRCRAFT=es_apogee ap.compile' with code 2
---------------------------------------------------------------------

Please find the air-frame file and the complete compile log in the
attachments. It seems it uses special files for boards with the LPC21
processor. Is it possible to run this module plugged in at AUX on the
Apogee board (as it is done on the Umarim as described at
http://wiki.paparazziuav.org/wiki/SUMO/prepare_electronics ) ?

Thanks for any help!

Andreas


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--
--------------------------------------

Dr. Andreas Philipp
Institute of Geography
University of Augsburg
Universitaetsstrasse 10
D - 86135 Augsburg
Germany

Phone:  ++49/821/598-2266
Fax:    ++49/821/598-2264
Email:  address@hidden
http://www.geo.uni-augsburg.de/lehrstuehle/phygeo/personal/philipp/
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