Have a look at this might help. Note, we dont use a freescale accel, so some things may be different but you'll get the basic idea.
http://www.freescale.com/files/sensors/doc/app_note/AN3397.pdf?fpsp=1&WT_TYPE=Application%20Notes&WT_VENDOR=FREESCALE&WT_FILE_FORMAT=pdf&WT_ASSET=Documentation Joel Newkirk wrote: > On Sat, 20 Sep 2008 17:36:00 -0400, "Michael Fisher" <[EMAIL PROTECTED]> > wrote: >> On Sat, Sep 20, 2008 at 4:07 PM, Joel Newkirk <[EMAIL PROTECTED]> >> wrote: >> >>> I wrote a short shell script to repeatedly take the raw output from one >> of >>> the accelerometers >> (/sys/devices/platform/spi_s3c24xx_gpio.1/spi0.1/dump) >>> and massage the data to output X,Y,and Z-axis readings in decimal, -128 >> to >>> 128. > >> As a bit OT but since you have gone to the trouble of developing the >> script, >> could you run a test while driving/riding in the car and post what the >> readings might be? I was thinking of the possibility of having the FR >> determine if it was in a moving car or not. >> >> Mike >> >> -- >> Michael Fisher >> [EMAIL PROTECTED] > > No problem, I'll alter the script to intersperse timestamps and take it for > a ride tomorrow. It's dumping samples about once per second ATM - I'd > initially included a 'sleep 1' command then commented it out since the loop > execution ended up taking about 1 sec anyway. (chains of cat/grep/sed/cut > piped) > > The one caveat is that I don't have a good mount for it in the car - for > the requested test I'll just lay it on the floor on the passenger side and > note the physical orientation. (more OT than this request, I found out > that the rubberized surface on the back of the Freerunner is essentially > non-stick if you try to lay the Freerunner on a Handstands StickyPad - I've > had one of those on my dashboard for years, always kept my cellphone and > Zaurus there even on a sloped dashboard, but the Freerunner won't stick to > it even on the flat dash in my new car) > > j > > > _______________________________________________ > Openmoko community mailing list > [email protected] > http://lists.openmoko.org/mailman/listinfo/community _______________________________________________ Openmoko community mailing list [email protected] http://lists.openmoko.org/mailman/listinfo/community
