比较32位变量会导致意外行为

您好，我有两个带有PIC32 MZ2048 EFM144（带有密码）的D3307板，用和声编码和XC32 1.44编译器。我有很多关于PIC24和DSPIC33的经验，所以我认为这是一块蛋糕，但不是。我已经配置了time2，t= 100nS和PR。10中的2个得到1US中断。在ISR中，它计算一个32位值。问题是我尝试的任何一个，IfPuPuthIn HealthBealTealPixVal1M1s变得大于100，它导致意外的行为，例如LED不闪烁1秒的速率，但非常不规则。调试表明，即使IfStimeDebug .UI32 IyAdvalPaldRealPrimeStaldPrime/Salk不为true，但该语句将变成真的。在将时钟设置为动态的和谐后，它工作得更好，但现在CPU在接收UART RX数据时冻结（然而，故障ISR或ORR变为真）。似乎没有错误的长VARS出了问题。有什么想法吗？



      以下为原文

    Hello,

I have a couple of DM320007 boards with the PIC32MZ2048EFM144 (with Crypto) and using HARMony for coding and XC32 1.44 compiler.
I have lots of experience with the PIC24 and dsPIC33's, so I thought this one would be a piece of cake too, but not.
I have configured timer2 with T=100ns and with PR2 of 10 its gets 1us interrupt.
Within that ISR it counts a 32bit value.
//====== DEFINITIONS =====================
struct strSysDebug{
    unsigned long int ui32_RunTimeSec;
    unsigned long int ui32_MainloopCounter;
    unsigned long int ui32_MainloopCounterCompareValue;
    unsigned long int ui32_TimerValue;
    float f32_CPUBelasting;
   
    unsigned long int ui32_IntervalCounterLEDHeartbeat;
    unsigned long int ui32_IntervalLEDHeartbeat;
   
    unsigned char bStructInit;
};

void __ISR(_TIMER_2_VECTOR,ipl6SRS) Timer2ISR(void)
{
    SystemDebug.ui32_TimerValue++;
    SystemDebug.ui32_IntervalCounterLEDHeartbeat++;
    //LATHbits.LATH0 = !LATHbits.LATH0;
    T2IF;// = 0;
}


//Init
if(!bInit)
{
   SystemDebug.ui32_IntervalLEDHeartbeat = CPU_MAIN_HEARTBEATLED_INTERVAL_1MS; //Macro define 1000ul
   bInit = TRUE;
}
if (SystemDebug.ui32_IntervalCounterLEDHeartbeat >= SystemDebug.ui32_IntervalLEDHeartbeat)
{
//Led blink
}



Problem is whatever I try, if CPU_MAIN_HEARTBEATLED_INTERVAL_1MS gets bigger than 100 it results in unsuspected behaviour, such as leds doesn't blink with rate of 1sec but very irregular. Debugging shows that even if SystemDebug.ui32_IntervalCounterLEDHeartbeat not equal/ statement not true, this statement however becomes true.

After I set clock to dynamic in Harmony it works a lot better, but now the cpu freezes when receiveing UART RX data (however FAULT ISR nor OERR becomes true).

It seems like something going wrong with unsigned long vars.

Any ideas?