Re: BL4S100 delay rutine and conversion analog to digital

Thanks Scott



________________________________
 From: Scott Henion <[email protected]>
To: [email protected] 
Sent: Monday, August 20, 2012 9:19 PM
Subject: Re: [rabbit-semi] BL4S100 delay rutine and conversion analog to digital
 

  
On 8/20/2012 8:55 PM, Nestor Hernandez wrote:


>
>Hello,
>This is the first time I use a bl4s100. I created a program to made data acquisition of 50 point, between each point there is a delay of 100 ms. The delay time is calculate using this equation Td= Mc*(13*Ni+6)*(32*No+6), where Mc is the time per machine cycle, and Ni and No represent immediate values load into HL and BC, respectively. 
>
>The program compile and run well, the problems is on conversion analog to digital does not work and the delay time neither. Someone  could help me, in order to make this program work well. Is there any other way to create a delay routine of 100 ms?
>Thanks in advance,
> 
>I add the program
>#use "BL4S1xx.LIB"
>main ()
>{
>   int tiempo,i,a;
>   auto char buffer[10];
>   auto float Volts1,Volts2,A1,A2,*a1,*a2;
>   auto float Volts_A1[50],Volts_A2[50];
> 
>   brdInit();
> 
>   printf("\nPRESS ENTER TO START\n");
>   gets(buffer);
> 
>   for ( i = 0; i <50; i++)
>       {
>            Volts1=anaInVolts(1,1);
>                        Volts2=anaInVolts(2,1);
>                        A1=(10*Volts1);
>                        A2=(0.5*Volts2)-1,1389;
>            a2=&A2;
>                        a1=&A1;
>                        Volts_A1[i]=*a1;
>                        Volts_A2[i]=*a2;
> 
>            #asm
>            PUSH  AF;
>            PUSH  BC;
>            PUSH  HL;
>            LD                  BC,0x17h;
>OUTER:                      LD                   HL,0x19Fh;
>INNER:                       DEC    HL;
>                                               LD                   A,H;
>            OR      L;
>            JP    NZ, INNER;
>            DEC    BC;
>            LD                  A,B;
>            OR                  C;
>            JP                    NZ,OUTER;
>            POP    HL;
>            POP    BC;
>            POP    AF;
>            #endasm
>                        printf("%f\t
%f\t %d\n",Volts_A1[i],Volts_A2[i], i);
>                        }
>  }
I seem to remember there is a init function to set up the A/D.

As for a delay:

void delayMS((unsigned long millisecs)
{
    unsigned long stime=MS_TIMER;
    while ((MS_TIMER-stime)<millisecs)
        ;
}

You can put stime=MS_TIMER at the start of your for loop. Then the
    while loop at the end. That will make each loop 100ms.

Also, printf's will slow things way down.


-- 
------------------------------------------ Scott G. Henion, Consultant
Web site:    http://SHDesigns.org
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