lab4_with_timer.c

#include <msp430fg4618.h>
#include <msp430.h>
#include "LCD_Ctrl.h"
#include "stdio.h"





#define GREEN BIT2
#define ORANGE BIT1
#define LCD_SIZE 11

/* Exercises for C-code
 * 	1. Write program to display the number 2 ( segments abdeg ) on the rightmost
 * 	   seven segment display.
 * 	2. Write program to display the number 2 ( segments abdeg ) on the leftmost
 * 	   seven segment display.
 * 	3. Write a C-language program that cna display the numbers 0 - 9 and Letters A-F.
 * 	   Program should count up from 0 to F and then repeat indefinitely
 * 	4. Write a C-language program that counts up from 0 to 999 in decimal and displays this
 * 	   count every tenth of a second if SW1 is pressed and begin counting down when SW2 is pressed
 */





unsigned int characters[] = {0x5f,0x06,0x6b,0x2f,0x36,0x3d,0x7d,0x07,0x7f,0x37,0x77,0x7c,0x59,0x2d,0x79,0x71};
void Init_LCD(void) ;

unsigned char *LCDSeg = (unsigned char *) &LCDM3;
unsigned int cnts[] = {0,0,0,0,0,0,0} ;
unsigned int cnt  =  0;
int main(void) {
	volatile unsigned char a;		// <Volatile>
	volatile unsigned int i; 		// <Volatile>

	WDTCTL = WDTPW + WDTHOLD; 		// Stop watchdog timer

	// Clock Set up
	CCTL0 = CCIE;					// Set up Timer+Clock
	TACTL = TASSEL_1 + MC_1; 		// [timerA -> ACLK][MODE: UP]
	TACCR0 = 0x7FFE ;				// TACCR0 is the upper limit of the timer = 32768
	P2DIR |= GREEN+ORANGE; 			// Set Px as output to be able to turn on LED
	Init_LCD();

	__enable_interrupt();
	__bis_SR_register(LPM0 + GIE);  // LPM0 with interrupts enabled





	// "0": 01011111 0x5f
	// "1": 00000110 0x06
	// "2": 01101011 0x6B
	// "3": 00101111 0x2F
	// "4": 00110110 0x36
	// "5": 00111101 0x3D
	// "6":	01111101 0x7D
	// "7": 00000111 0x07
	// "8": 01111111 0x7F
	// "9": 00110111 0x37

	// "A": 01110111 0x77
	// "b": 01111100 0x7C
	// "c": 01011001 0x59
	// "d":	00101101 0x2D
	// "e": 01111001 0x79
	// "f": 01110001 0x71
}





#pragma vector = TIMERA0_VECTOR
__interrupt void Timer_A (void){
	if ( cnt%2 == 0 ){
		P2OUT ^= GREEN; 					// Toggle P1.0 using exclusive-OR
	}
	else P2OUT ^= ORANGE;
	cnt++ ;
}