f0615e68babb001d1cadda25ac8ccbe2

来自「关于xilinx大学计划配需教程实验五源代码」· 代码 · 共 58 行

#include "xparameters.h"
#include "xgpio.h"
#include "xgpio_l.h"
#include "xutil.h"
#include "xintc_l.h"
#include "xtmrctr_l.h"
#define LEDChan 1


//====================================================

 	int one_second_flag = 0;
 	unsigned int count = 1;
	XGpio LEDs_8Bit; 
void timer_int_handler(void * baseaddr_p)
{
	unsigned int baseaddr = (int)baseaddr_p;
 	unsigned int csr;
 	
 	csr = XTmrCtr_mGetControlStatusReg(baseaddr, 0);
 	
 	if (csr & XTC_CSR_INT_OCCURED_MASK)

 		count++;
 		one_second_flag = 1;
 	
 		XGpio_mSetDataReg(XPAR_LEDS_8BIT_BASEADDR, LEDChan, count);
 		printf("Count value is: %x\n\r", count);
 
 	XTmrCtr_mSetControlStatusReg(baseaddr, 0, csr);
 
}   	
int main (void) 
{   
	int  count_mod_3;
	
	XGpio_Initialize(&LEDs_8Bit, XPAR_LEDS_8BIT_DEVICE_ID);
	XGpio_SetDataDirection(&LEDs_8Bit, LEDChan, 0x00000000);
	
	XIntc_mMasterEnable(XPAR_OPB_INTC_0_BASEADDR);
	XIntc_mEnableIntr(XPAR_OPB_INTC_0_BASEADDR, 0x1);
	
	XGpio_mSetDataReg( XPAR_LEDS_8BIT_BASEADDR, LEDChan, ~count);

 	while(1)
 	{
 		if(one_second_flag){
 			count_mod_3 = count % 3;
 			if(count_mod_3 = 0)
 				xil_printf("Interrupt taken at %d seconds \n\r", count); 
 				one_second_flag=0;
 				xil_printf(".");
 		}
 	}
}