ECE 322 day15

// example file
// msp430fr69xx_ta0_02.c

#include <msp430.h>

int main(void)
{
  WDTCTL = WDTPW | WDTHOLD;                 // Stop WDT

  // Configure GPIO
  P1DIR |= BIT0;
  P1OUT |= BIT0;

  // Disable the GPIO power-on default high-impedance mode to activate
  // previously configured port settings
  PM5CTL0 &= ~LOCKLPM5;

  TA0CCTL0 = CCIE;                          // TACCR0 interrupt enabled
  TA0CCR0 = 50000;
  TA0CTL = TASSEL__SMCLK | MC__UP;          // SMCLK, UP mode

  __bis_SR_register(LPM0_bits + GIE);       // Enter LPM0 w/ interrupt
  __no_operation();                         // For debugger
}

// Timer0_A0 interrupt service routine
#if defined(__TI_COMPILER_VERSION__) || defined(__IAR_SYSTEMS_ICC__)
#pragma vector = TIMER0_A0_VECTOR
__interrupt void Timer0_A0_ISR (void)
#elif defined(__GNUC__)
void __attribute__ ((interrupt(TIMER0_A0_VECTOR))) Timer0_A0_ISR (void)
#else
#error Compiler not supported!
#endif
{
  P1OUT ^= BIT0;
}

volatile unsigned char TimerFlag = 0;

void TimerISR() {
   TimerFlag = 1;
}

#include "RIMS.h"

volatile unsigned char TimerFlag=0; // ISR raises, main() lowers

void TimerISR() {
 TimerFlag = 1;
}

enum BL_States { BL_SMStart, BL_LedOff, BL_LedOn } BL_State;

void TickFct_Blink() {

   switch ( BL_State ) { //Transitions
      case BL_SMStart:
         BL_State = BL_LedOff; //Initial state
         break;
      case BL_LedOff:
         BL_State = BL_LedOn;
         break;
      case BL_LedOn:
         BL_State = BL_LedOff;
         break;
 default:
         BL_State = BL_SMStart;
         break;
   }

   switch (BL_State ) { //State actions
      case BL_LedOff:
         B0 = 0;
         break;
      case BL_LedOn:
         B0 = 1;
         break;
 default:
         break;
   }
}

void main() {
   B = 0; //Init outputs
   TimerSet(2000);
   TimerOn();
   BL_State = BL_SMStart; // Indicates initial call to tick-fct
   while (1) {
      TickFct_Blink();      // Execute one synchSM tick
      while (!TimerFlag){}  // Wait for BL's period
      TimerFlag = 0;        // Lower flag
   }
}