Hi EvryOne,
i'm mohammed from morocco, i'm studying embedded systems and i have my
graduate project in WSN with TinyOS on Micaz.
i have to work with Sensirion SHT75; i saw the contrib code from
http://tinyos.cvs.sourceforge.net/viewvc/tinyos/tinyos-2.x-contrib/imsas/tos/platforms/meshbean/chips/sht11/sht75%20interfacing.pdf
about that subject and i just changed few things to let things go with the
micaz board.
*DATA = MicaBusC.Int3; *
*SCK = MicaBusC.PW2;*
* *
*
*
*components HplSensirionSht11P;*
* HplSensirionSht11P.PWR -> MicaBusC.PW5; // Power*
* HplSensirionSht11P.DATA -> MicaBusC.Int3; //data*
* HplSensirionSht11P.SCK -> MicaBusC.PW2; //clk*
i've also connected the sht75 to this pins with a pull up resistor for DATA
and pull down for the clock.
the code didn't work because waitForResponse() (from HplSensirionSht11C.nc)
returns FAIL. and i don't know why ?
* error_t waitForResponse() {*
* call DATA.makeInput();*
* call DATA.set();*
* call CLOCK.set();*
* if (call DATA.get()) {*
*
*
* // the device didn't pull the DATA line low*
* // the command wasn't received or acknowledged*
*
*
* return FAIL;*
* }*
* call CLOCK.clr();*
* return SUCCESS;*
* }*
i'm asking for your help !
thanks in advance !
best regards !
--
___________________________________________________________________
*YASSINE Mohammed*
*Mobile and Embedded Systems engineer student at the*
*National Advanced School of Computer Science and System Analysis *
*(ENSIAS - Morocco).*
<https://twitter.com/_MohaYassine_>
<https://www.facebook.com/its.YassineMohammed>
<https://plus.google.com/104643636005434170744/posts>
*+212 673-40-30-68*
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