并行中断程序控制代码.txt

#include"stdio.h"
#include"xil_io.h"
#include"xgpio_l.h"
#define XPAR_AXI_GPIO_0_BASEADDR  0x40000000
#define XPAR_AXI_GPIO_2_BASEADDR  0x40020000
int main()
{
  unsigned short  button,last_sw,last_sw1,current_sw,current_sw1,he,ji;
  Xil_Out16(XPAR_AXI_GPIO_0_BASEADDR+XGPIO_TRI_OFFSET,0xffff);//初始化
  Xil_Out8(XPAR_AXI_GPIO_2_BASEADDR+XGPIO_TRI_OFFSET,0x1f);
  Xil_Out16(XPAR_AXI_GPIO_0_BASEADDR+XGPIO_TRI2_OFFSET,0x0000);
  while(1)
  while((Xil_In8(XPAR_AXI_GPIO_2_BASEADDR+XGPIO_DATA_OFFSET)&0x1f)!=0)
   {
       button=Xil_In8(XPAR_AXI_GPIO_2_BASEADDR+XGPIO_DATA_OFFSET)&0x1f;
       while((Xil_In8(XPAR_AXI_GPIO_2_BASEADDR+XGPIO_DATA_OFFSET)&0x1f)!=0);
       xil_printf("The pushed button's code is 0x%x\n",button);//打印按键输入
       if(button==0x1)
       {
    	   last_sw=current_sw;
    	   current_sw=Xil_In16(XPAR_AXI_GPIO_0_BASEADDR+XGPIO_DATA_OFFSET)&0xffff;
    	   if(last_sw!=current_sw)
    	   xil_printf("The switches code is 0x%4x\n",current_sw);//打印开关输入
    	   Xil_Out16(XPAR_AXI_GPIO_0_BASEADDR+XGPIO_DATA2_OFFSET,current_sw);
    	   xil_printf("The led code is 0x%4x\n",current_sw);//打印led输出
       }
       else if(button==0x8)
       {
          	   last_sw1=current_sw1;
          current_sw1=Xil_In16(XPAR_AXI_GPIO_0_BASEADDR+XGPIO_DATA_OFFSET)&0xffff;
          	   if(last_sw1!=current_sw1)
          	   xil_printf("The switches code is 0x%4x\n",current_sw1);//打印开关输入
         Xil_Out16(XPAR_AXI_GPIO_0_BASEADDR+XGPIO_DATA2_OFFSET,current_sw1);
          	   xil_printf("The led code is 0x%4x\n",current_sw1);//打印led输出
             }
       else if(button==0x2)
              {
                 	  he=current_sw+current_sw1;                 	   Xil_Out16(XPAR_AXI_GPIO_0_BASEADDR+XGPIO_DATA2_OFFSET,he);
                 	  xil_printf("The led he code is 0x%4x\n",he);//打印led输出
                    }
       else if(button==0x10)
                    {
                       	  ji=current_sw*current_sw1;
                       	Xil_Out16(XPAR_AXI_GPIO_0_BASEADDR+XGPIO_DATA2_OFFSET,ji);
                       	  xil_printf("The led ji code is 0x%4x\n",ji);//打印led输出
                          }
   }
}