XDMA 中断的问题

yanjie_x · 发表于 2019-7-20 14:21:59

如图，我将3个信号作为中断信号同时给了PS和XDMA，我在PS中用SDK检测3个中断信号

GicConfig = XScuGic_LookupConfig(XPAR_PS7_SCUGIC_0_DEVICE_ID);
XScuGic_CfgInitialize(&InterruptController, GicConfig,GicConfig->CpuBaseAddress);
Xil_ExceptionRegisterHandler(XIL_EXCEPTION_ID_INT,
            (Xil_ExceptionHandler) XScuGic_InterruptHandler,
            &InterruptController);
Xil_ExceptionEnable();
XScuGic_Connect(&InterruptController, PULSE_EVENT,
               (Xil_ExceptionHandler)PULSE_EVENT_Handler,
               (void *)&InterruptController);
XScuGic_Connect(&InterruptController, IRQ_EVENT,
               (Xil_ExceptionHandler)IRQ_EVENT_Handler,
               (void *)&InterruptController);
XScuGic_Connect(&InterruptController, OVERFLOW_EVENT,
               (Xil_ExceptionHandler)OVERFLOW_EVENT_Handler,
               (void *)&InterruptController);
XScuGic_SetPriorityTriggerType(&InterruptController, PULSE_EVENT,40,0b11);
XScuGic_SetPriorityTriggerType(&InterruptController, IRQ_EVENT,40,0b11);
XScuGic_SetPriorityTriggerType(&InterruptController, OVERFLOW_EVENT,40,0b11);
XScuGic_Enable(&InterruptController, PULSE_EVENT);
XScuGic_Enable(&InterruptController, IRQ_EVENT);
XScuGic_Enable(&InterruptController, OVERFLOW_EVENT);
TIM图片20190720141059.png

显示中断信号识别正常，采用的是上升沿触发模式
但是我在Linux QT中，根据汤老板的代码

event1_fd = open("/dev/xdma0_events_1",O_RDWR | O_SYNC);
if(event1_fd < 0)
      return -3;
event0_fd = open("/dev/xdma0_events_0",O_RDWR | O_SYNC);
if(event0_fd < 0)
      return -4;
event2_fd = open("/dev/xdma0_events_2",O_RDWR | O_SYNC);
if(event2_fd < 0)
      return -5;

int read_event(int fd)
{
int val;
read(fd,&val,4);
return val;
}

void pulseeventthread::run()
{
while(1)
{
      read_event(event0_fd);
      emit sig_pulse_event_emit();
}
}

connect(&pulse_event_thread,SIGNAL(sig_pulse_event_emit()),this,SLOT(pulse_event_occurs()));

void MainWindow::pulse_event_occurs()
{
ui->lb_pulse_event->setText("get event");
}

发现read_event得不到这3个中断信号，请问下汤老板有遇到这样的情况吗，
驱动测试读写h2c c2h和 user 都可以正常工作了

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XDMA 中断的问题

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