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A、本人最近在進(jìn)行ZYNQ7045的調(diào)測(cè)試，其中涉及到PS接收PL端的中斷問題。
原理：PL設(shè)置定時(shí)器，以20ms為周期進(jìn)行中斷觸發(fā)，PS在收到中斷之后，立馬響應(yīng)，做后續(xù)的程序判斷。
1、PL的20ms中斷是上升沿邊沿觸發(fā)方式，中斷號(hào)是61
2、調(diào)試過程1，不設(shè)置中斷觸發(fā)方式時(shí)，一直進(jìn)入中斷出不來，不進(jìn)入主函數(shù)了。
3、調(diào)試過程2，設(shè)置中斷觸發(fā)方式為邊沿觸發(fā)，不進(jìn)中斷，一直在主函數(shù)中。
B、代碼如下：
test_interrupt.c
- #include "xscugic.h"
- #include "test_interrupt.h"
- int flag_1ms,flag_20ms;
- void Device1553BDriverHandler(void *CallbackRef)
- {
- xil_printf("進(jìn)入rt1553B-20200320\r\n");
- rtIsr();
- }
- void Device20msDriverHandler(void *CallbackRef,XScuGic *IntcInstancePtr,int intId)
- {
- xil_printf("進(jìn)入20ms中斷-%d次\r\n",flag_20ms);
- flag_20ms ++;
- xil_printf("進(jìn)入20ms中斷-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中斷-20200320\r\n");
- }
- //GIC初始化
- int GIC_Initial(XScuGic *IntcInstancePtr,u32 INT_DEVICE_ID)
- {
- int gic_status = 0;
- XScuGic_Config *GICConfigPtr;
- //根據(jù)INT_DEVICE_ID 中斷設(shè)備號(hào)，完成中斷GIC設(shè)備的配置
- 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("定時(shí)器自測(cè)試成功�。。r\n");
- }
- return gic_status;
- }
- //全局中斷設(shè)置
- void Setup_Interrupt_Exception(XScuGic *IntcInstancePtr)
- {
- xil_printf("全局中斷設(shè)置�。�！20200320\r\n");
- Xil_ExceptionInit();
- Xil_ExceptionRegisterHandler(XIL_EXCEPTION_ID_IRQ_INT,
- (Xil_ExceptionHandler)XScuGic_InterruptHandler,
- IntcInstancePtr);
- Xil_ExceptionEnable(); //必須使能異常，之前沒有使能導(dǎo)致程序錯(cuò)誤�。�！
- }
- //20ms中斷設(shè)置和掛接
- void Setup_20ms_Interrupt(XScuGic *IntcInstancePtr,u16 Intr_20ms_Id)
- {
- int sta;
- u8 Priority,Trigger;
- //設(shè)置上升沿中斷類型
- XScuGic_GetPriorityTriggerType(IntcInstancePtr, Intr_20ms_Id, &Priority, &Trigger);
- XScuGic_SetPriorityTriggerType(IntcInstancePtr, Intr_20ms_Id, Priority, 0x3);//上升沿
- //掛接中斷
- 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號(hào)中斷掛接 \r\n");
- }
- //中斷使能
- XScuGic_Enable(IntcInstancePtr, Intr_20ms_Id);
- xil_printf("完成20ms中斷使能 \r\n");
- }
- #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設(shè)備號(hào)
- XScuGic IntcInstancePtr; ///?????
- int main(void)
- {
- char ID;
- ID = Get_CPU_ID();
- xil_printf("當(dāng)前CPU的ID是 %d \r\n",ID);
- sleep(1);
- #if 1
- //1、定義中斷結(jié)構(gòu)體 之前有取地址符
- GIC_Initial(&IntcInstancePtr,INTC_DEVICE_ID);
- //2、調(diào)用中斷函數(shù)，
- Setup_Interrupt_Exception(&IntcInstancePtr);
- //4、中斷使能
- 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、請(qǐng)各位看看是哪里設(shè)置的不對(duì)？
D、本人疑惑：
如果中斷掛接不正常，那么不應(yīng)該進(jìn)入中斷
本人一開始重點(diǎn)排查沒有清楚中斷，自己直接操作的ICDICPR該寄存器，不知道操作是否正確，屏蔽也沒有作用。
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