#include "msp430.h"
#include "adc.h"

unsigned int adc_read(unsigned int channel)
{
	ADC10CTL0 &= ~ENC; 				/* Disable ADC */
	ADC10CTL0 = ADC10SHT_3 + ADC10ON; 		/* 16 clock ticks, 
							   ADC On */
	ADC10CTL1 = ADC10SSEL_3 + channel; 		/* Set 'chan', SMCLK */
	ADC10CTL0 |= ENC + ADC10SC; 			/* Enable and start 
							   conversion */
	while (!(ADC10CTL0 & ADC10IFG));		/* wait */
	
	return ADC10MEM;
}