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TM4C123 外部中断例程

wj z
Prodigy 210 points


自己按照Tiva写的总会进入DefaultIntHandler

  • 0
    Guru 65885 points
    贴你的代码上来。你说的外部中断，指的是GPIO中断吧，可以参考C:\ti\TivaWare_C_Series-2.1.4.178\examples\boards\dk-tm4c123g\interrupts线的代码，例程中就是展示了GPIO中断。
  • 0
    TI__Guru**** 252096 points
    建议您附上代码或者再详细说明您的问题，谢谢
  • 0 回复 xyz549040622
    Prodigy 210 points

    /* PE4 */
    void exit_init(void)
    {
    /* problem unsolved */
    SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOE);
    GPIODMATriggerEnable(GPIO_PORTE_BASE,GPIO_PIN_4);
    GPIOPinTypeGPIOInput(GPIO_PORTE_BASE, GPIO_PIN_4);
    GPIOPadConfigSet(GPIO_PORTE_BASE, GPIO_PIN_4, GPIO_STRENGTH_2MA, GPIO_PIN_TYPE_STD_WPD);
    GPIOIntTypeSet(GPIO_PORTE_BASE, GPIO_PIN_4 , GPIO_RISING_EDGE);
    GPIOIntRegister(GPIO_PORTE_BASE, uDMAIntHandler);
    GPIOIntEnable(GPIO_PORTE_BASE, GPIO_PIN_4);
    IntEnable(INT_GPIOE);
    }

  • 0 回复 wj z
    Guru 65885 points
    启动函数中添加中断函数了没？
  • 0 回复 wj z
    TI__Guru**** 252096 points 
    //*****************************************************************************
//
// This is the code that gets called when the processor receives an unexpected
// interrupt.  This simply enters an infinite loop, preserving the system state
// for examination by a debugger.
//
//*****************************************************************************
static void
IntDefaultHandler(void)
{
    //
    // Go into an infinite loop.
    //
    while(1)
    {
    }
}

    进入IntDefaultHandler是因为收到了意外中断

    建议您加上IntMasterEnable();然后在中断服务程序内加断点调试一下，看能否进入中断