指向Struct问题的指针抛出异常

大家好，我想在我的代码中使用指针来构造，因为我有使用这个表单的库。我遇到的问题是，当我试图访问结构中的一个成员时，就会抛出异常。我用XC32编译器使用PIC32 MM0256GPM028。这里是我的代码（注意，这是生成异常的最简单的代码形式），在这里，当我尝试将Tun1成员设置为0时，出现异常。有趣的是，我尝试了同样的代码在PICT32 MX795F512L中，没有例外发生并且工作良好。有什么评论吗？提前感谢。



      以下为原文

    Hi all,

I am trying to use Pointer to Struct in my code since I have library which uses that form. The problem I encounter is when ever I try to access a member in the structure a exception is thrown. I am using PIC32MM0256GPM028 with XC32 compiler. Here is my code (note this is the simplest form of code which generate the exception)

#include "mcc_generated_files/mcc.h"
#include "common.h"
#include "mcc_generated_files/spi2.h"
#include

unsigned char rx_buffer;


typedef struct{
   
    unsigned int temp1;
    unsigned char temp2;
   
   
}FIELD_UNIT;

FIELD_UNIT *Field_Unit;



/*
                         Main application
*/
int main(void)
{
    // initialize the device
    SYSTEM_Initialize();

    // When using interrupts, you need to set the Global Interrupt Enable bits
    // Use the following macros to:

    // Enable the Global Interrupts
    //INTERRUPT_GlobalEnable();

    // Disable the Global Interrupts
    //INTERRUPT_GlobalDisable();

   
    while(1)
    {
   
    //IO_RB9_Toggle();
        Field_Unit->temp1=0; //<---At this point exception occurs.
   
    }

   
}
/**
End of File


Here, I when I try to set the temp1 member to zero an exception occur. Interestingly, I tried the same code in PIC32MX795F512L and no exceptions occur and works fine.
Any comments?

Thanks in advance.