PIC32MZ中断调用导致锁定的功能

你好，这个芯片是PIC32MZ2048EFG100如果我像这样运行代码，那么一切正常。我们对中断函数中的count变量进行递增，然后读取main中的变量。但是，如果我更改了代码，以便_u ISR函数调用另一个函数，那么一旦中断触发，代码就会完全冻结。知道我做错了什么吗？



      以下为原文

    Hello,

This chip is a PIC32MZ2048EFG100

If I run the code like this then everything works as expected. We increment the count variable in the interrupt function and read the variable in the main.

int main() {
   ANSELB = 0x0000;
   ANSELD = 0x0000;

    // Loop: Loop 2 times
    for (FCLV_LOOP1=0; (FCLV_LOOP1)<(2); (FCLV_LOOP1)++)  {
        FCP_SET(M, D, 0x00000010, 4, (1));  // Output: 1 -> D4
        FCI_DELAYBYTE_S(1);  // Delay: 1 s
        FCP_SET(M, D, 0x00000010, 4, (0));  // Output: 0 -> D4   
        FCI_DELAYBYTE_S(1);  // Delay: 1 s
    }

    // Interrupt: Enable TMR1
    T1CON = (T1CON & 0xfffd);
    T1CON = ((T1CON & 0xff0f) | 0x0030);
    PR1=65536-1;
    T1CON = T1CON | 0x8000;
    IEC0bits.T1IE = 1;
    IPC1bits.T1IP = 1;
    IPC1bits.T1IS = 0;
    TMR1 = 0;
    INTCONbits.MVEC = 1;
    __builtin_mtc0(12,0,(__builtin_mfc0(12,0) | 0x0001));

    // Loop: While 1
    while (1)  {
        FCP_SET(M, B, 0x00000800, 11, (FCV_COUNT & 1));   // Output: count & 1 -> B11
        FCP_SET(M, D, 0x00000010, 4, (1));  // Output: 1 -> D4
        FCI_DELAYBYTE_MS(80);  // Delay: 80 ms
        FCP_SET(M, D, 0x00000010, 4, (0));  // Output: 0 -> D4
        FCI_DELAYBYTE_MS(80); // Delay: 80 ms  
    }
    return 0; }

void __ISR(_TIMER_1_VECTOR, ipl1AUTO) _IntHandlerDrvTmrInstance0(void) {
    IFS0bits.T1IF = 0;
     FCV_COUNT = FCV_COUNT + 1; }


However if I change the code so that the __ISR function calls another function then the code completely freezes as soon as the interrupt fires. Any idea what I'm doing wrong?

void FCM_timerint()  {

    FCV_COUNT = FCV_COUNT + 1; }


void __ISR(_TIMER_1_VECTOR, ipl1AUTO) _IntHandlerDrvTmrInstance0(void) {
    IFS0bits.T1IF = 0;
     FCM_timerint(); }