Messmodul.c

/*******************************************************

 * Ansteuerung des 12 Kanal AD-Wandlers auf dem Messmodul

 *******************************************************

 * Filename:  Messmodul.c

 * Author:    

 * History:

 * 17.05.2011  CL  v1.0  PIC18

 *******************************************************/

// Adds support for PIC18 Peripheral library functions and macros

#include <p18f2580.h>

#include <MAX1228.h>

#include <Defines.h>

#include <math.h>

#include <ctype.h>

#include <stdlib.h>

#include <reset.h>

#include <stdio.h>

#include <delays.h>

#include <spi.h>

// Configuration Bits

#pragma config WDT  = OFF

#pragma config OSC   = HS

#pragma config FCMEN   = ON

#pragma config XINST  = OFF

#pragma config LVP  = OFF

#pragma config MCLRE = ON

unsigned char conv_byte  = 0;

unsigned char setup_byte = 0;  

int  average_byte  = (MAX1228_AVERAGE_4);

unsigned char SPI_Send;

unsigned char SPI_Recv;

unsigned char sync_mode=0;

unsigned char bus_mode=0;

unsigned char smp_phase=0;

unsigned char w=0; 

unsigned char TempVar; 

void main(void)

{

  TRISAbits.TRISA5 = 0;

  TRISBbits.TRISB0 = 0;

  TRISCbits.TRISC1 = 0;

  TRISCbits.TRISC6 = 1;

  PORTBbits.RB0 = 1;

  PORTCbits.RC1 = 0;

    CS = 1;

//  conv_byte = (MAX1228_CONV_AIN11 | MAX1228_CONV_SCAN_00_N);

//  setup_byte = (MAX1228_SETUP_INTCLK | MAX1228_SETUP_INTREF_ACTIVE);

    sync_mode = SPI_FOSC_16 ;  

    bus_mode = MODE_01;

    smp_phase = SMPMID; 

  OpenSPI(sync_mode,bus_mode,smp_phase);

  TempVar = SSPBUF;           // Clears BF

    SSPCON1bits.WCOL = 0;

  CS = 0;  

  SSPBUF =0b00010000;      //Reset Byte

  while(!SSPSTATbits.BF);

  CS = 1;

  Delay10TCY();

  Delay10TCY();

  Delay10TCY();

  Delay10TCY();

   TempVar = SSPBUF;           // Clears BF

    SSPCON1bits.WCOL = 0;

  CS = 0;  

  SSPBUF =0b01101000;      //Setup Byte

  while(!SSPSTATbits.BF);

  CS = 1;

  Delay10TCY();

  Delay10TCY();

    while(1)

  {

    TempVar = SSPBUF;           // Clears BF

      SSPCON1bits.WCOL = 0;

    CS = 0;

    SSPBUF = 0b11011000;    //Conversion Byte

    //SSPBUF = 0b00011011;

    while(!SSPSTATbits.BF);

    CS = 1;  

    Delay10TCY();

    Delay10TCY();

    Delay10TCY();

    Delay10TCY();

  }    

}