microblaze定时器不能产生中断怎么办？

aplerll · 发表于 2019-9-20 15:24

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microblaze定时器不能产生中断怎么办？

按照官方帮助文档上的教程写的，调试时定时器确实溢出了，但没有执行中断处理函数。在XPS中BUS InteRFace界面下，microblaze_0下的INTERRUPT 为 NO Connection。
/***************************** Include Files *********************************/
#include "xparameters.h"
#include "xtmrctr.h"
#include "xil_exception.h"
#include "xgpio.h"

#include "xintc.h"
#include <stdio.h>
/************************** Constant Definitions *****************************/
#define P1_ID XPAR_GPIO_1_DEVICE_ID
#define P1_DIRECTION 0x00 /*P1八个端口的方向*/
#define P1_ID  XPAR_P1_BUS_DEVICE_ID
#define LED_CHANNEL 1       //我们在用BSB添加GPIO时用的是1号通道
#define INTC_DEVICE_ID             XPAR_INTC_0_DEVICE_ID//中断控制器ID
#define TMRCTR_DEVICE_ID       XPAR_XPS_TIMER_0_DEVICE_ID //定时器设备ID
#define TMRCTR_INTERRUPT_ID       XPAR_INTC_0_TMRCTR_0_VEC_ID  //定时器中断向量
#define TIMER_CNTR_0       0 //每个设备中有两个定时计数器，我们用的是定时/计数器0
#define INTC             XIntc
#define INTC_HANDLER       XIntc_InterruptHandler

#define RESET_VALUE       0x0001 //16位定时器,50M的时钟
/************************** Function Prototypes ******************************/

int TmrCtrIntrExample(INTC* IntcInstancePtr, XTmrCtr* InstancePtr, u16 DeviceId,
            u16 IntrId, u8 TmrCtrNumber);
//把定时器连接到中断控制器上，开启中断
static int TmrCtrSetupIntrSystem(INTC* IntcInstancePtr, XTmrCtr* InstancePtr,
            u16 DeviceId, u16 IntrId, u8 TmrCtrNumber);
//中断处理函数
void TimerCounterHandler(void *CallBackRef, u8 TmrCtrNumber);
void TmrCtrDisableIntr(INTC* IntcInstancePtr, u16 IntrId);
/************************** Variable Definitions *****************************/
XGpio P1;
INTC InterruptController; /* 中断控制器的实例 */
XTmrCtr TimerCounterInst; /*定时计数器的实例*/
volatile int TimerExpired; //溢出次数
int main(void) {
      int Status;
      //初始化P1
      Status = XGpio_Initialize(&P1, P1_ID);
      if (Status != XST_SUCCESS) {
            return XST_FAILURE;
      }
      XGpio_SetDataDirection(&P1, LED_CHANNEL, P1_DIRECTION);
      XGpio_DiscreteWrite(&P1, LED_CHANNEL, 0xaa);

      Status = TmrCtrIntrExample(&InterruptController, &TimerCounterInst,
                     TMRCTR_DEVICE_ID, TMRCTR_INTERRUPT_ID, TIMER_CNTR_0);
      if (Status != XST_SUCCESS) {
            return XST_FAILURE;
      }
      return XST_SUCCESS;
}
int TmrCtrIntrExample(INTC* IntcInstancePtr, XTmrCtr* TmrCtrInstancePtr,
            u16 DeviceId, u16 IntrId, u8 TmrCtrNumber) {
      int Status;
      int LastTimerExpired = 0;
      int temp=0;
      Status = XTmrCtr_Initialize(TmrCtrInstancePtr, DeviceId);
      if (Status != XST_SUCCESS) {
            return XST_FAILURE;
      }
      Status = XTmrCtr_SelfTest(TmrCtrInstancePtr, TmrCtrNumber);
      if (Status != XST_SUCCESS) {
            return XST_FAILURE;
      }
      Status = TmrCtrSetupIntrSystem(IntcInstancePtr, TmrCtrInstancePtr, DeviceId,
                     IntrId, TmrCtrNumber);
      if (Status != XST_SUCCESS) {
            return XST_FAILURE;
      }
      XTmrCtr_SetHandler(TmrCtrInstancePtr, TimerCounterHandler,
                     TmrCtrInstancePtr);
      XTmrCtr_SetOptions(TmrCtrInstancePtr, TmrCtrNumber,
                     XTC_INT_MODE_OPTION | XTC_AUTO_RELOAD_OPTION);
      XTmrCtr_SetResetValue(TmrCtrInstancePtr, TmrCtrNumber, RESET_VALUE);
      XTmrCtr_Start(TmrCtrInstancePtr, TmrCtrNumber);
      while (1) {
            while (TimerExpired == LastTimerExpired) {
                     temp=XTmrCtr_IsExpired(TmrCtrInstancePtr, TmrCtrNumber);
            }
            LastTimerExpired = TimerExpired;
            if (TimerExpired == 3) {
                     XTmrCtr_Stop(TmrCtrInstancePtr, TmrCtrNumber);
                     break;
            }
      }

      TmrCtrDisableIntr(IntcInstancePtr, DeviceId);
      return XST_SUCCESS;
}
void TimerCounterHandler(void *CallBackRef, u8 TmrCtrNumber) {
      XTmrCtr *InstancePtr = (XTmrCtr *) CallBackRef;
      XGpio_DiscreteWrite(&P1, LED_CHANNEL, 0xff);
      if (XTmrCtr_IsExpired(InstancePtr, TmrCtrNumber)) {
            TimerExpired++;
            if (TimerExpired == 1000) {
                     XTmrCtr_SetOptions(InstancePtr, TmrCtrNumber, 0);
            }
      }
}

static int TmrCtrSetupIntrSystem(INTC* IntcInstancePtr,
            XTmrCtr* TmrCtrInstancePtr, u16 DeviceId, u16 IntrId, u8 TmrCtrNumber) {
      int Status;

      Status = XIntc_Initialize(IntcInstancePtr, INTC_DEVICE_ID);
      if (Status != XST_SUCCESS) {
            return XST_FAILURE;
      }
      Status = XIntc_Connect(IntcInstancePtr, IntrId,
                     (XInterruptHandler) XTmrCtr_InterruptHandler,
                     (void *) TmrCtrInstancePtr);
      if (Status != XST_SUCCESS) {
            return XST_FAILURE;
      }
      Status = XIntc_Start(IntcInstancePtr, XIN_REAL_MODE);
      if (Status != XST_SUCCESS) {
            return XST_FAILURE;
      }
      XIntc_Enable(IntcInstancePtr, IntrId);

      Xil_ExceptionInit();
      Xil_ExceptionRegisterHandler(XIL_EXCEPTION_ID_INT,
                     (Xil_ExceptionHandler) INTC_HANDLER, IntcInstancePtr);
      Xil_ExceptionEnable();
      return XST_SUCCESS;
}
void TmrCtrDisableIntr(INTC* IntcInstancePtr, u16 IntrId)
{
      XIntc_Disable(IntcInstancePtr, IntrId);
      return;
}

请教大神，非常感谢！

Colbie · 发表于 2019-9-20 17:23

路过帮顶。

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microblaze定时器不能产生中断怎么办？

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