MSP430内部温度传感器测验程序

//MSP430根底试验开发组件 – ADC12内部模块演示程序之内部温度传感器
//时钟设置:
////ACLK = n/a, MCLK = SMCLK = default DCO ~ 800kHz, ADC12CLK = ADC12OSC
//当时演示程序功用描绘:
////运用MSP430F14X内部的温度传感器,经过ADC12的通道10进行AD转化
////核算获得摄氏温度和华氏温度,经过断点在View->Watch中调查温度值
////因为定标问题, 可能会存在温度的差错

#include <msp430x14x.h>

unsigned int long temp;
unsigned int long TemperF; //华氏温度
unsigned int long TemperC; //摄氏温度
void main(void) {
WDTCTL = WDTPW + WDTHOLD; //关闭体系看门狗
ADC12CTL0 = SHT0_8 + REFON + ADC12ON; //内部1.5V参阅电压,翻开ADC12模块,设置采样坚持定时器
ADC12CTL1 = SHP; //采运用采样定时器
ADC12MCTL0 = SREF_1 + INCH_10; //参阅电压和通道挑选
ADC12IE = BIT0; //ADC12MEM0
ADC12CTL0 |= ENC; //答应转化

_BIS_SR(GIE); //敞开体系中止

while(1) {
ADC12CTL0 |= ADC12SC; //开端采样并AD转化

//oF = ((x/4096)*1500mV)-923mV)*1/1.97mV = x*761/4096 – 468
//IntDegF = (ADC12MEM0 – 2519)* 761/4096
TemperF = (temp – 2519) * 761;
TemperF = TemperF / 4096; //简化的华氏温度转化公式

//oC = ((x/4096)*1500mV)-986mV)*1/3.55mV = x*423/4096 – 278
//IntDegC = (ADC12MEM0 – 2692)* 423/4096
TemperC = (temp – 2692) * 423;
TemperC = TemperC / 4096; //简化的摄氏温度转化公式

_NOP(); //参加断点可用来调查IntDegF和IntDegC成果
}
}

#pragma vector=ADC_VECTOR
__interrupt void ADC12ISR(void) {
temp = ADC12MEM0; //保存转化成果
}