#include <msp430x14x.h>
#include "adc.h"

void Init_ADC(void)
{
    //設置P6.0~P6.3為模擬輸入通道
    P6SEL = 0X07;                 
    
    //設置ENC為0，從而修改ADC12寄存器的值
    ADC12CTL0 &= ~(ENC);      
    //轉換的起始地址為：ADCMEM0
    ADC12CTL1 |= CSTARTADD_0;		
    
    //設置參考電壓分別為AVSS和AVCC，輸入通道為A0
    ADC12MCTL0 = INCH_0;            
    //設置參考電壓分別為AVSS和AVCC，輸入通道為A1
    ADC12MCTL1 = INCH_1;    
    //設置參考電壓分別為AVSS和AVCC，輸入通道為A2
    ADC12MCTL2 = INCH_2;     
    //設置參考電壓分別為AVSS和AVCC，輸入通道為A3
    ADC12MCTL3 = INCH_3; 
    //設置參考電壓分別為AVSS和AVCC，輸入通道為A4
    ADC12MCTL4 = INCH_4;        
    //設置參考電壓分別為AVSS和AVCC，輸入通道為A5    
    ADC12MCTL5 = INCH_5;            
    //設置參考電壓分別為AVSS和AVCC，輸入通道為A6
    ADC12MCTL6 = INCH_6 ;    
    //設置參考電壓分別為AVSS和AVCC，輸入通道為A7
    ADC12MCTL7 = INCH_7 + EOS;      
    	    
    ADC12CTL0 |= ADC12ON;
    ADC12CTL0 |= MSC;
    
    //轉換模式為：多通道、單次轉換
    ADC12CTL1 |= CONSEQ_1;	
    //SMCLK
    ADC12CTL1 |= ADC12SSEL_1;	
    //時鐘分頻為1
    ADC12CTL1 |= ADC12DIV_0;		
    //采樣脈沖由采用定時器產生
    ADC12CTL1 |= (SHP);			
    //使能ADC轉換            
    ADC12CTL0 |= ENC;			
    return;
}