AD1674 with AT89C51

Hi all

Here is code of AD1674 with C51 convert.

#include <reg51.h>
#include <INTRINS.H>
#include <STDIO.H>


sbit STATUS = P1^0;

unsigned char xdata CTRL _at_ 0x2FFF; //Why define CTRL at the external Address?
unsigned char xdata ADSEL _at_ 0x4FFF; //Why define ADSEL at the external Address?
unsigned char hByte;
unsigned char lByte;

void adc_Convert (void)
{

CTRL = 0x00; //Why assign 0x00 to the address? And What delegated for the CTRL?
ADSEL = 0x00; //Why assign 0x00 to the address?

while(STATUS==1);

CTRL = 0x02; //Why assign 0x02 to the address?
hByte = ADSEL;

CTRL = 0x03; //Why assign 0x03 to the address?
lByte = ADSEL;
}


void main(void)
{ unsigned int delay, MSB , LSB, adc_Res;

SCON = 0xDA;
TMOD |= 0x20;
TH1 = 0xFD;
TR1 = 1;
TI = 1;

while(1)
{
adc_Convert();
MSB=(unsigned int)(hByte << 4);
LSB=(unsigned int)(lByte >> 4);

adc_Res = MSB + LSB;

printf("ADC READINGS: %03Xh\n", adc_Res);

for (delay=0; delay<10000; delay++)
;
}
}





Please explain detail for me ,thanks for your help in advance!!

Where did you taken this code ?

Can you share the schematic where this code is implemented ?


--
Karan

Where did you taken this code ?

Can you share the schematic where this code is implemented ?


--
Karan

Karan123

Hi Karan

I don't upload photo of schematic,here is link for other website for your reference.

http://www.edaboard.com/thread355629.html