A、本人最近在进行ZYNQ7045的调测试,其中涉及到PS接收PL端的中断问题。
原理:PL设置定时器,以20ms为周期进行中断触发,PS在收到中断之后,立马响应,做后续的程序判断。
1、PL的20ms中断是上升沿边沿触发方式,中断号是61
2、调试过程1,不设置中断触发方式时,一直进入中断出不来,不进入主函数了。
3、调试过程2,设置中断触发方式为边沿触发,不进中断,一直在主函数中。
B、代码如下:
#include "xscugic.h"
#include "test_interrupt.h"
int flag_1ms,flag_20ms;
void Device1553BDriverHandler(void *CallbackRef)
{
xil_printf("进入rt1553B-20200320\r\n");
rtIsr();
}
void Device20msDriverHandler(void *CallbackRef,XScuGic *IntcInstancePtr,int intId)
{
xil_printf("进入20ms中断-%d次\r\n",flag_20ms);
flag_20ms ++;
xil_printf("进入20ms中断-20200320\r\n");
IntcTypeClear(IntcInstancePtr,INTC_DEVICE_20MS_INT_ID);
//Xil_Out32(ICDICPR,0xffffffff);
//Xil_Out32(ICDICPR+4,0xffffffff);
//Xil_Out32(ICDICPR+8,0xffffffff);
xil_printf("清除20ms中断-20200320\r\n");
}
//GIC初始化
int GIC_Initial(XScuGic *IntcInstancePtr,u32 INT_DEVICE_ID)
{
int gic_status = 0;
XScuGic_Config *GICConfigPtr;
//根据INT_DEVICE_ID 中断设备号,完成中断GIC设备的配置
GICConfigPtr = XScuGic_LookupConfig(INT_DEVICE_ID);
gic_status = XScuGic_CfgInitialize(IntcInstancePtr,GICConfigPtr,GICConfigPtr->CpuBaseAddress);
if(gic_status == XST_SUCCESS)
{
xil_printf("GIC配置成功!!!20200320\r\n");
}
gic_status = XScuGic_SelfTest(IntcInstancePtr);
if(gic_status == XST_SUCCESS)
{
xil_printf("定时器自测试成功!!!\r\n");
}
return gic_status;
}
//全局中断设置
void Setup_Interrupt_Exception(XScuGic *IntcInstancePtr)
{
xil_printf("全局中断设置!!!20200320\r\n");
Xil_ExceptionInit();
Xil_ExceptionRegisterHandler(XIL_EXCEPTION_ID_IRQ_INT,
(Xil_ExceptionHandler)XScuGic_InterruptHandler,
IntcInstancePtr);
Xil_ExceptionEnable(); //必须使能异常,之前没有使能导致程序错误!!!
}
//20ms中断设置和挂接
void Setup_20ms_Interrupt(XScuGic *IntcInstancePtr,u16 Intr_20ms_Id)
{
int sta;
u8 Priority,Trigger;
//设置上升沿中断类型
XScuGic_GetPriorityTriggerType(IntcInstancePtr, Intr_20ms_Id, &Priority, &Trigger);
XScuGic_SetPriorityTriggerType(IntcInstancePtr, Intr_20ms_Id, Priority, 0x3);//上升沿
//挂接中断
sta = XScuGic_Connect(IntcInstancePtr, Intr_20ms_Id, (Xil_ExceptionHandler)Device20msDriverHandler, (void *)1);//
if (sta != XST_SUCCESS)
{
return XST_FAILURE;
}else
{
xil_printf("完成20ms 61号中断挂接 \r\n");
}
//中断使能
XScuGic_Enable(IntcInstancePtr, Intr_20ms_Id);
xil_printf("完成20ms中断使能 \r\n");
}
主函数编写
#include <string.h>
#include "NetWork.h"
#include "GlobalVars.h"
#include "gtypes.h"
#include "test_interrupt.h"
extern BOOL f_bSyn20ms;
extern BOOL g_bStartTimer;
extern unsigned int g_nTimerCnt;
#define INTC_DEVICE_ID XPAR_SCUGIC_SINGLE_DEVICE_ID //SCU的GIC设备号
XScuGic IntcInstancePtr; ///?????
int main(void)
{
char ID;
ID = Get_CPU_ID();
xil_printf("当前CPU的ID是 %d \r\n",ID);
sleep(1);
#if 1
//1、定义中断结构体 之前有取地址符
GIC_Initial(&IntcInstancePtr,INTC_DEVICE_ID);
//2、调用中断函数,
Setup_Interrupt_Exception(&IntcInstancePtr);
//4、中断使能
Setup_20ms_Interrupt(&IntcInstancePtr,INTC_DEVICE_20MS_INT_ID);
#endif
xil_printf("hello world5464654!!! \r\n");
while(1)
{
xil_printf("hello world!!! \r\n");
sleep(1);
}
return 0;
}
C、请各位看看是哪里设置的不对?
D、本人疑惑:
如果中断挂接不正常,那么不应该进入中断
本人一开始重点排查没有清楚中断,自己直接操作的ICDICPR该寄存器,不知道操作是否正确,屏蔽也没有作用。