init.c

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#include "timer.h"
#include "init.h"
#include "adc.h"
#include "lcdisp.h"
#include "comm.h"
#include "setup.h"

void Init(void) {
  extern MEASSET g_sets[NUM_MS];
  UCHAR i=0;

  // done individually by LCD init
//  DDRA=(0<<DDA7) | (0<<DDA6) | (0<<DDA5) | (0<<DDA4) | (0<<DDA3) | (0<<DDA2) | (0<<DDA1) | (0<<DDA0);
  // State: Bit7=T Bit6=T Bit5=T Bit4=T Bit3=T Bit2=T Bit1=T Bit0=T
//  PORTA=(0<<PORTA7) | (0<<PORTA6) | (0<<PORTA5) | (0<<PORTA4) | (0<<PORTA3) | (0<<PORTA2) | (0<<PORTA1) | (0<<PORTA0);

  // Port B initialization
//  DDRB - Port B Data Direction Register
//    | DDB7 [0] | DDB6 [0] | DDB5 [0] | DDB4 [1] | DDB3 [1] | DDB2 [0] | DDB1 [0] | DDB0 [0] |
//    configure PB3 & PB4 as output
  DDRB=(0<<DDB7) | (0<<DDB6) | (0<<DDB5) | (1<<DDB4) | (1<<DDB3) | (0<<DDB2) | (0<<DDB1) | (0<<DDB0);

//  PORTB - Port B Data Register
//    | PORTB7 [0] | PORTB6 [0] | PORTB5 [0] | PORTB4 [0] | PORTB3 [0] | PORTB2 [0] | PORTB1 [0] | PORTB0 [0] |
  PORTB=(0<<PORTB7) | (0<<PORTB6) | (0<<PORTB5) | (0<<PORTB4) | (0<<PORTB3) | (0<<PORTB2) | (0<<PORTB1) | (0<<PORTB0);
  
//  ACSRA - Analog Comparator Control and Status Register A
//    | ACD [1] | ACBG [0] | ACO [0] | ACI [0] | ACIE [0] | ACME [0] | ACIS1 [0] | ACIS0 [0] |
//    set ACD bit to '1' to disable analog comparator
  AC_SR = (1<<ACD) | (0<<ACBG) | (0<<ACO) | (0<<ACI) | (0<<ACIE) | (0<<ACME) | (0<<ACIS1) | (0<<ACIS0);
  
//  clock prescaler setup - division factor = 1 (@ system clock = 8 MHz)
  CLKPR = (1<<CLKPCE) | (0<<CLKPS3) | (0<<CLKPS2) | (0<<CLKPS1) | (0<<CLKPS0);
  CLKPR = (0<<CLKPCE) | (0<<CLKPS3) | (0<<CLKPS2) | (0<<CLKPS1) | (0<<CLKPS0);

  TimerInit();
  AdcInit();
  CommInit();
  SetupInit();
  LcdInit();
  //invalidate values of measurement sets
  for(i=0;i<NUM_MS;++i) {
    g_sets[i].inTemp = INVALID_VAL_I16;
    g_sets[i].outTemp = INVALID_VAL_I16;
    g_sets[i].forTemp = INVALID_VAL_U16;
  }
}