[Tinyos-help] (no subject)

[Lakshmi Pradeep]

Hi ,
                 Thanks for your reply.I am attaching that code below . Could you please
check it for me ?         BlinkM is a code for checking a random number
generation .Function ran0 returns a random number between 0.0  and
1.0.   This function works in C. 
I am working with moteworks platform,mib520 programming board ,micaz motes . I got this error on executing this
code in nesC.  

BlinkM.nc:29 syntax error before  '&'.
make: *** [exe0]  Error1

If generated value(val) is less than 1.0 the red led must toggle.
Is the all bitwise operators used below works with nesC? Please give me a reply.

.....................................................................................Code..........................
module BlinkM {
  provides {
    interface StdControl;
  }
  uses {
    interface Timer;
    interface Leds;
  }
}
implementation {

    long val,tn;
    long idum=21;
    long p=0.5;
    
    
    command result_t StdControl.init() {
    call Leds.init(); 
    return SUCCESS;
  }
command result_t StdControl.start() {
    // Start a repeating timer that fires every 1000ms
    return call Timer.start(TIMER_REPEAT, 1000);
  }
command result_t StdControl.stop() {
    return call Timer.stop();
  }

double ran0(long &idum)
{
    const int a=16807,m=2147483647,q=127773;
    const int r=2836,MASK=123459876;
    const double am=1./m;
    long k;
    double ans;

    idum^=MASK;
    k=(idum)/q;
    idum=a*(idum-k*q)-r*k;

    if(idum<0)
        idum+=m;
    ans=am*(idum);
    idum^=MASK;
    return ans;
}

event result_t Timer.fired()
  {
    double i=1.0;
        val=ran0(idum);
    tn=p/(1-p*(val/(1/p)));
    if(val<i)
    call Leds.redToggle();
    
    return SUCCESS;
  }
  
}

Thanks 
Lakshmi


----- Original Message ----
From: Michael Schippling <schip at santafe.edu>
To: Lakshmi Pradeep <lakshmiup at yahoo.com>
Cc: tinyos-help at millennium.berkeley.edu
Sent: Wednesday, May 28, 2008 1:16:39 AM
Subject: Re: [Tinyos-help] (no subject)

All that should work just like good old C...
Do you have specific problems that we can argue about?
MS


Lakshmi Pradeep wrote:
> Hi
>              I have some doubts regarding the use of pointers in 
> nesC.Can we use a simple C function like    double rand(long &idum)   in 
> nesC? What are bitwise operators used in nesC? Please reply.
> Thanks
> Lakshmi
> 
> 
> ------------------------------------------------------------------------
> 
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