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AD7691 Driver

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gianni_pancrazi

Joined: 13 Feb 2007
Posts: 4

AD7691 Driver

Posted: Wed Feb 21, 2007 10:40 am

At the end I managed to realize it... Very Happy

I'm using a 4 wire bus, with CS.

Code:

#include<Header.h>
#device *=16
#use delay(clock=16000000)
#use rs232(baud=9600, xmit=PIN_C6, rcv=PIN_C7)
#define SDI PIN_B4
#define SDO PIN_C5    // the pin description is PIC oriented
#define SCKL PIN_C3
#define CNV PIN_A4
#define LED PIN_B2
int32 data=0;

int i;

void main()
{
unsigned long cnt=0;

while(1)
{
output_high(SDO);
output_high(CNV);       /* Starting conversion */
output_low(SDO);
delay_us(15);
                     /* Conversion Ended */

for(i=19;i>0;--i)
// for(i=32;i>13;--i)
            {
            output_low(SCKL);
            output_high(SCKL);
            shift_left(&data,3,input(SDI)); /* maybe 1 instead of 3???*/
         // bit_set(data, i)
         // this function is too slow to be used in the application...
            }

output_high(SDO);
output_low(CNV);

cnt ++;
if (cnt==10000)
{
//    printf("\r the acquired value is: %x", data);
   printf("%x", data);
   data=0;
   output_toggle(LED);    /* Blinking LED for debugging*/
   cnt=0;
}

} ;

} // main() END

I will happy if anybody of u has comments/suggestions...

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