//Random -function, timer method
//
//Timer_A is setup in capture mode. SMCLK is set to the
//DCO and set as the input clock to Timer_A. ACLK
//is set to the VLO, which is the trigger for the capture.
//Timer_A counts the number of DCO clock pulses
//before the next VLO low-to-high transition occurs.
//The number of DCO clock pulses is saved by the timer
//in a Capture/Compare Register (CCR).

int randomize_led(){

	while(1){
		
	BCSCTL2 &= ~(DIVS1 + DIVS0);   			// SMCLK / 1 (subsystem clock)

	TACCR0 = 0;
	
	TACCTL0 = CAP | CM_1 | CCIS_1;            // Capture mode, positive edge/ aclk input
	TACTL = TASSEL_2 | MC_2;                  // SMCLK, continuous up

	
	while (!(CCIFG & TACCTL0));       // Wait for interrupt

	TACCTL0 &= ~CCIFG;                // Clear interrupt

	result =  TACCR0;        
	
	result = result & 0x0007;      			// bit masking the result to 3 bits
	
				
	BCSCTL2 |= DIVS1 + DIVS0;   			// SMCLK / 8 (subsystem clock)
											// set SMCLK back to 125KHZ
	
	if(result > 6){
		
		result = 6;
			
	}
				
	if(result < 1){
		result = 1;
	}
				
		if(result != prev_result){
			prev_result = result;
			return result;
			
		}
	
	}

}