启用UART时暂停

论坛上，PIC24FJ128GA202XC16调试了主板和子板一对一回。子板包含图片，母板包含女儿的标题以及SD和UART/USB收发器电路，所有IO都有跳线。第一组板工作得很好。必须对UART/USB收发器的IO参考如何供电做一些小调整，以及一些小事情。对两个板进行更新。新的子板仍然适合于原来的母板头，并且工作得很好，即所有的IO工作。问题：如果我在旧板或新子板上启用UART（UART到USBCOM）并在新的母板上运行它，那么调试停止。我的常规调试错误处理函数（见下文）没有被跳过。调试停止，虽然我不知道它在哪里停止，也不知道它为什么停止。注意：如果UART/USB收发器跳线连接与否，调试停止（UART管脚浮动）。有人能给我一些关于如何继续解决暂停问题的提示和提供id吗？关于我的新母亲董事会可能有什么问题？谢谢，Craig//Only支持DEBUG测试/*Primary Exception Vector处理程序：如果INTCON2bits.ALTIVT=0，则使用这些例程。该文件中的所有陷阱服务例程都只是确保设备在陷阱服务例程中持续执行代码。用户可以修改这里提供的基本框架以适应其应用的需要。*/void_.((中断，no_auto_psv))OscillatorFail(void){errLoc=getErrLoc()；INTCON1bits.OSCFAIL=0;//清除陷阱标志，而(1)}//void_.(u inter._))_AddressError(void)voi(中断，no_auto_auto_psv)1_AddressErError(void){未签名的char ele(void){未签名的char(vo_ele___..{未符号._auto_auto_auto_auto_psv_vvvvvvvvvvvvvvvvvvvvvvvvvvvvv))AdAdAdAdAdAddressErErErErEr(无效)_Address.{._未签名的char char_ele(void..{__11ele___...ele 1111ele__.{1111ele____psv)_StackError(void){errLoc=GEtErErLoc()；INTCON1bits.STKERR=0; ; //清除陷阱标志，同时(1)；///清除陷阱标志，同时(1)：}}///void_u.u._.(u_中断u_intergetintergetintergegetErErErErErErErErErErErLoc()INTCON1bits.STKEKERR=0;//void_att_._._._.u((u interu_inter_inter_inter_._._u interu_._u interu_.u_._u._u*备选异常向量处理ers：如果INTCON2bits.ALTIVT=1，则使用这些例程。该文件中的所有陷阱服务例程都只是确保device在陷阱服务例程内连续执行代码。用户可以修改这里提供的基本框架以适应其应用的需要。*/void_.((inter.，no_auto_psv))AltOscillatorFail(void){INTCON1bits.OSCFAIL=0；而(1);}void_.((inter.，no_auto_psv))_AltAddressError(void){INTCON1bits.ADDRERR=0；(1);}void_.((inter.，no_auto_psv))AltStackError(void){INTCON1bits.STKERR=0；而(1);}void_.((inter.，no_auto_psv))AltMathError(void){INTCON1bits.MATHERR=0；而(1);}



      以下为原文

    Forum,

PIC24FJ128GA202
XC16
Debugging

Made mother board and daughter board pair a while back.  The daughter board contained the pic and the mother board contained a header for the daughter along with SD and UART/USB transceiver circuitry with jumpers to all IO.

The first set of boards work well.  Had to make a minor tweak to how the IO reference for UART/USB transceiver was powered and a few minor things.

Made an update to both boards.  The new daughter boards still fit into the original mother board headers and work perfectly well i.e. all IO work.

Problem:  If I enable UART (UART to USB COMs) on either the old or new daughter board and run it on the new mother board then debugging halts.  My normal DEBUG error handling functions (see below) are not tripped.  Debugging halts though I can't tell where it is halting or exactly why it is halting.

Note:  debugging halts if the UART/USB transceiver jumpers are connected or not (UART pins floating).

Would someone please provide me some pointers on how to move forward troubleshooting the halt issue and provide ideas as to what may be wrong with my new mother boards?

Thank you,
Craig

// Only support DEBUG testing
/*
Primary Exception Vector handlers:
These routines are used if INTCON2bits.ALTIVT = 0.
All trap service routines in this file simply ensure that device
continuously executes code within the trap service routine. Users
may modify the basic framework provided here to suit to the needs
of their application.
*/
void __attribute__((interrupt, no_auto_psv)) _OscillatorFail(void)
{
    errLoc=getErrLoc();
    INTCON1bits.OSCFAIL = 0;        //Clear the trap flag
    while (1);
}

//void __attribute__((__interrupt__)) _AddressError(void)
void __attribute__((interrupt, no_auto_psv)) _AddressError(void)
{
    unsigned char ele;
    ele                 = 1;
    errLoc=getErrLoc();
    INTCON1bits.ADDRERR = 0;        //Clear the trap flag
    while (1);
}

//void __attribute__((__interrupt__)) _StackError(void)
void __attribute__((interrupt, no_auto_psv)) _StackError(void)
{
    errLoc=getErrLoc();
    INTCON1bits.STKERR = 0;         //Clear the trap flag
    while (1);
}

//void __attribute__((__interrupt__)) _MathError(void)
void __attribute__((interrupt, no_auto_psv)) _MathError(void)
{
    errLoc=getErrLoc();
    INTCON1bits.MATHERR = 0;        //Clear the trap flag
    while (1);
}



/*
Alternate Exception Vector handlers:
These routines are used if INTCON2bits.ALTIVT = 1.
All trap service routines in this file simply ensure that device
continuously executes code within the trap service routine. Users
may modify the basic framework provided here to suit to the needs
of their application.
*/

void __attribute__((interrupt, no_auto_psv)) _AltOscillatorFail(void)
{
    INTCON1bits.OSCFAIL = 0;
    while (1);
}

void __attribute__((interrupt, no_auto_psv)) _AltAddressError(void)
{
    INTCON1bits.ADDRERR = 0;
    while (1);
}

void __attribute__((interrupt, no_auto_psv)) _AltStackError(void)
{
    INTCON1bits.STKERR = 0;
    while (1);
}

void __attribute__((interrupt, no_auto_psv)) _AltMathError(void)
{
    INTCON1bits.MATHERR = 0;
    while (1);
}