[参考译文] MSP430FR6989：有关器件库的问题

我实际上测试了两个版本、两个版本都没有挂起。  这是我使用的代码。

#include "driverlib.h"
#include <stdint.h>

    uint16_t measureESIOSC(void);
    uint16_t measureESIOSC_OLD(void);
int main(void) {

    WDT_A_hold(WDT_A_BASE);

    PM5CTL0 &= ~LOCKLPM5;
    P1DIR = BIT0;
    P1OUT = 0; // OFF LED

    measureESIOSC();
    measureESIOSC_OLD();

    P1OUT |= BIT0; // TURN ON LED TO SHOW CODE MADE IT ALL THE WAY
    while(1);
}

// This is in 2.91.13.01 (Latest version)
 uint16_t measureESIOSC(void)

 {

     uint16_t temp;

     // This and next instruction realizes a clear->set ESICLKGON bit.
     ESIOSC &= ~(ESICLKGON);

     // This starts measurement.
     ESIOSC |= ESICLKGON + ESIHFSEL;

     _no_operation();

     // Get counter value, when measurement has not finished yet, ESICNT3
     // value is 0x01
     do
     {
         temp = ESICNT3;
     } while(temp == 0x01);

     // Stop ESIOSC oscillator
     ESIOSC &= ~(ESICLKGON);

     // returns counter value ESICNT3
     return temp;
 }


 //This is in  2.00.00.16
 uint16_t measureESIOSC_OLD(void){

     //uint16_t temp;

     // This and next instruction realizes a clear->set ESICLKGON bit.
     ESIOSC &= ~(ESICLKGON);

     // This starts measurement.
     ESIOSC |= ESICLKGON + ESIHFSEL;

     // Get counter value, when measurement has not finished yet, ESICNT3
     // value is 0x01
     while(ESICNT3==1);

     // Stop ESIOSC oscillator
     ESIOSC &= ~(ESICLKGON);

     // returns counter value ESICNT3
     return (ESICNT3);
 }