I tired ADXL202 for accelerometer and tried to measure a short
montion.

I used capture mode and main cal are as below:

...
  ccp2_2=cpp2_read();
  //cal total and width
   //65536*0.2us=13307.2us, is 13ms. for 20mhz crystal.
  //65536*1us=65 ms. for 4mhz crystal
  //keep every timer1_0->timer1_1 or timer1_1->t2 must <= than 65636.
  //can have one roll over. timer1 continuously run without reset.
  if (ccp2_2<=ccp2_1)ccp2_low_n=65536-(ccp2_1-ccp2_2);
  else ccp2_low_n=ccp2_2-ccp2_1;
  if (ccp2_1<=ccp2_0)ccp2_high_n=65536-(ccp2_0-ccp2_1);
  else ccp2_high_n=ccp2_1-ccp2_0;
  ccp2_0=ccp2_2;//cal end, give to _0 as next starting rise
...

Above work perfect, but a value I get is too small comparing with
g. So, useless if I can't keep excuracy of leveling, that I really can't.

My conclusion is ADXL202 only for static titling measurement.
Now, I turn to use PS2 mouse as motion sensor.

Hope helpful

Paul

----- Original Message -----
From: "Rick Regan" <rdrdr2k@YAHOO.COM>
To: <PICLIST@MITVMA.MIT.EDU>
Sent: Saturday, December 06, 2003 11:13 AM
Subject: Re: [PIC]:ADXL202 Accelerometer


> --- Lee Barker <iyasu@CABLENET-VA.COM> wrote:
> > What I was trying to do was send the raw data back
>
> My first suggestion is to break this down into small
> chunks you can debug independently.  Many things
>

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