#include <msp430x14x.h>
#define uint unsigned int
#define uchar unsigned char
static uchar adc_flag = 0 ;
uint AD_TEMP = 0 ;
void int_clk()
{
uchar i ;
BCSCTL1&=~XT2OFF; //翻开XT振动器
BCSCTL2|=SELM1+SELS; //MCLK为8MHz,SMCLK为8MHz
do
{
IFG1&=~OFIFG; //铲除振动过错标志
for(i=0;i<100;i++)
_NOP(); //延时等候
}
while((IFG1&OFIFG)!=0); //假如标志为1,则持续循环等候
IFG1&=~OFIFG;
}
int_adc()
{
P6SEL |= BIT0 ; //挑选ＡＤ通道
ADC12CTL0 |= ADC12ON + SHT0_2 + REF2_5V + REFON ; //采样坚持时刻为16个ADC12CLK
/*ADC12ON ADC模块电源操控位；
REF2_5V 内部参阅电压挑选位０：１.５Ｖ １：２.５Ｖ
REFON 参阅电压模块操控位０：封闭 １：翻开*/
ADC12CTL1 |= ADC12SSEL0 + ADC12SSEL1 ; //ADC12时钟源挑选操控位 00ADC12OSC 01ACLK 10MCLK 11SMCLK
ADC12MCTL0 = 0x10; // 接连转化完毕通道，CHANNEL = A0 参阅挑选操控位
ADC12IE |= 0x01; //使能A/D转化器
ADC12CTL0 |= ENC ; //AD转化使能
}
#pragma vector = ADC_VECTOR
__interrupt void ADC12ISR(void)
{
while((ADC12CTL1 & 0x01)== 1); //等候转化完
adc_flag = 1 ;
AD_TEMP = ADC12MEM0 ; //设置ＡＤ转化完结标志，并读取ＡＤＣ值
}
void main()
{
WDTCTL = WDTPW + WDTHOLD ;
int_clk();
int_adc();
_EINT(); //使能中止
adc_flag = 1 ;
while(1)
{
while(adc_flag == 1)
{
ADC12CTL0 |= ADC12SC ; //敞开转化
ADC12CTL0 &= ~ADC12SC ;
adc_flag = 0 ; //清中止标志
}
}
}
