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msp430 - MSP430G2553：连续 ADC10 采样（带中断）

问题描述

我写了一个小程序，根据ADC10中断对MSP430G2553的内部温度传感器进行连续采样。但是，我的代码并没有这样做。它（仅）触发一次中断，填充数组的第一个索引，然后停止。我错过了什么？

    #include <msp430g2553.h>

/**
 * main.c
 * Use ADC module to read the value of the MCU's internal temperature sensor
 * and dump those values into an array.
 */

volatile unsigned counter = 0;
volatile unsigned temparr[20];

void main(void)
{
    WDTCTL = WDTPW + WDTHOLD;                                           // Stop WDT

    ADC10CTL0 = SREF_1 + ADC10SHT_3 + REFON + ADC10ON + ADC10IE + MSC;  // Set ADC module
    ADC10CTL1 = CONSEQ_0 + INCH_10 + ADC10DIV_7;                        // Set ADC module
    ADC10DTC0 = ADC10CT;                                                // Set ADC module

    ADC10CTL0 |= ENC + ADC10SC;                                         // Start ADC + sampling

    __enable_interrupt();

}

#pragma vector=ADC10_VECTOR
__interrupt void ADC10_IRS(void)
{
    while (ADC10CTL1 & BUSY);                                           // Give time to the ADC to settle

    if (counter < 20) {
        temparr[counter] = ADC10MEM;
        counter++;
    }

    else {
        counter = 0;
    }
}

标签： msp430texas-instruments

解决方案

    #include <msp430g2553.h>

/**
 * main.c
 * Use ADC module to read the value of the MCU's internal temperature sensor
 * and dump those values into an array.
 */

volatile unsigned counter = 0;
volatile unsigned temparr[20];

void main(void)
{
    WDTCTL = WDTPW + WDTHOLD;                                           // Stop WDT

    ADC10CTL0 = SREF_1 + ADC10SHT_3 + REFON + ADC10ON + ADC10IE + MSC;  // Set ADC module
    ADC10CTL1 = CONSEQ_2 + INCH_10 + ADC10DIV_7;                        // Set ADC module
    ADC10DTC0 = ADC10CT;                                                // Set ADC module

    ADC10CTL0 |= ENC + ADC10SC;

    __enable_interrupt();

}

#pragma vector=ADC10_VECTOR
__interrupt void ADC10_IRS(void)
{
    //while (ADC10CTL1 & BUSY);                                           // Give time to the ADC to settle

    if (counter < 20) {
        temparr[counter] = ADC10MEM;
        counter++;
    }

    else {
        counter = 0;
        ADC10CTL0 &= ~(ENC + ADC10SC);
    }
}

看来这是调试器的问题。运行代码几次后，它才开始工作：S。我正在使用通过 Spy-By-Wire 直接连接到 MSP430G2553 芯片的 MSP-FET 闪存工具。我知道一些 TI 用户在最新固件更新 (CCS8) 后报告了此设备的问题。

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