一、试验任务

        通过自定义一个 LED IP 核，通过 PS 端的程序来控制底板上 PL 端 LED1 呈现呼吸
灯的效果，并且 PS 可以通过 AXI 接口来控制呼吸灯的开关和呼吸的频率。

 二、创建IP核

三、创建工程，调用IP

#include "stdio.h"
#include "xparameters.h"
#include "breath_led_ip.h"
#include "xil_io.h"
#include "sleep.h"

#define LED_IP_BASEADDR 	XPAR_BREATH_LED_IP_0_S0_AXI_BASEADDR
#define LED_IP_REG0			BREATH_LED_IP_S0_AXI_SLV_REG0_OFFSET
#define LED_IP_REG1			BREATH_LED_IP_S0_AXI_SLV_REG1_OFFSET

int main(){
	int freq_flag = 0;
	int led_status = 0;
	while(1){
		if(freq_flag == 0){
			BREATH_LED_IP_mWriteReg(LED_IP_BASEADDR,LED_IP_REG1,0x80000001);
			freq_flag = 1;
		}else{
			BREATH_LED_IP_mWriteReg(LED_IP_BASEADDR,LED_IP_REG1,0x80000009);
			freq_flag = 0;
		}
		led_status = BREATH_LED_IP_mReadReg(LED_IP_BASEADDR,LED_IP_REG0);
		if(led_status == 0){
		//打开呼吸灯开关
			BREATH_LED_IP_mWriteReg(LED_IP_BASEADDR,LED_IP_REG0,1);
			sleep(5);
		}

		led_status = BREATH_LED_IP_mReadReg(LED_IP_BASEADDR,LED_IP_REG0);
		if(led_status == 1){
		//关闭呼吸灯开关
			BREATH_LED_IP_mWriteReg(LED_IP_BASEADDR,LED_IP_REG0,0);
			sleep(1);
		}
	}
	return 0;
}

四、上板验证

 

五、对以有IP核进行编译

重新生成bit流与硬件信息

更改vitis平台硬件信息见xilinx vitis 更换硬件平台——ZYNQ学习笔记5_vitis升级硬件平台-****博客

#include "stdio.h"
#include "xparameters.h"
#include "breath_led_ip.h"
#include "xil_io.h"
#include "sleep.h"

#define LED_IP_BASEADDR 	XPAR_BREATH_LED_IP_0_S0_AXI_BASEADDR
#define LED_IP_REG0			BREATH_LED_IP_S0_AXI_SLV_REG0_OFFSET
#define LED_IP_REG1			BREATH_LED_IP_S0_AXI_SLV_REG1_OFFSET
#define LED_IP_REG2			BREATH_LED_IP_S0_AXI_SLV_REG2_OFFSET

int main(){
	int freq_flag = 0;
	int led_status = 0;
	int test_data = 0;
	while(1){

		if(freq_flag == 0){
			BREATH_LED_IP_mWriteReg(LED_IP_BASEADDR,LED_IP_REG1,0x80000001);
			freq_flag = 1;
		}else{
			BREATH_LED_IP_mWriteReg(LED_IP_BASEADDR,LED_IP_REG1,0x80000009);
			freq_flag = 0;
		}
		led_status = BREATH_LED_IP_mReadReg(LED_IP_BASEADDR,LED_IP_REG0);
		if(led_status == 0){
		//打开呼吸灯开关
			BREATH_LED_IP_mWriteReg(LED_IP_BASEADDR,LED_IP_REG0,1);
			sleep(3);
		}

		led_status = BREATH_LED_IP_mReadReg(LED_IP_BASEADDR,LED_IP_REG0);
		if(led_status == 1){
		//关闭呼吸灯开关
			BREATH_LED_IP_mWriteReg(LED_IP_BASEADDR,LED_IP_REG0,0);
			sleep(1);
		}

		test_data = BREATH_LED_IP_mReadReg(LED_IP_BASEADDR,LED_IP_REG2);
		if(test_data != 0 ){
			BREATH_LED_IP_mWriteReg(LED_IP_BASEADDR,LED_IP_REG1,0x80000005);
			BREATH_LED_IP_mWriteReg(LED_IP_BASEADDR,LED_IP_REG0,1);
			sleep(8);
			test_data = 0;
		}
	}
	return 0;
}