zedboard 8路拨码开关

源代码

#include <stdio.h>#include "platform.h"#include "xparameters.h"#include "xgpio.h"#include "sleep.h"#include "platform.h"#include "xil_types.h"#include "xgpiops.h"/************************** Constant Definitions *****************************//** The following constant maps to the name of the hardware instances that* were created in the EDK XPS system.*/#define XPAR_LEDS_ID XPAR_AXI_GPIO_0_BASEADDR//AXI_GPIO_0 是添加的第一个 gpio 所以是 leds#define XPAR_SWS_ID XPAR_AXI_GPIO_1_BASEADDR //那么这个自然是开关了//intmain(){ static XGpio LED_Ptr;//定义GPIO指针 static XGpio SWS_Ptr; int XStatus; int num = 0; //初始化 LED XStatus = XGpio_Initialize(&LED_Ptr,XPAR_AXI_GPIO_0_DEVICE_ID); if(XST_SUCCESS != XStatus) print("GPIO INIT FAILED\n\r"); XGpio_SetDataDirection(&LED_Ptr, 1,0×00);//通道1；设置方向 0 输出 1输入, 0x00表示8位都是输出 XGpio_DiscreteWrite(&LED_Ptr, 1,0×00); //初始化开关 XStatus = XGpio_Initialize(&SWS_Ptr,XPAR_AXI_GPIO_1_DEVICE_ID); if(XST_SUCCESS != XStatus) print("GPIO INIT FAILED\n\r"); XGpio_SetDataDirection(&SWS_Ptr, 1,0xFF);//通道1；设置方向 0 输出 1输入 0xFF表示8位都是输入 while(1){ num = XGpio_DiscreteRead(&SWS_Ptr, 1); //从开关处读数据 printf("Numb %d\n\r", num); XGpio_DiscreteWrite(&LED_Ptr, 1, num); // @paramChannel contains the channel of the GPIO (1 or 2) to operate on. // XGpio_DiscreteWrite(&LED_Ptr, 1,num); //直接写入 led usleep(1000000); //delay 1ms } printf("end\n\r \n\r"); // return 0;}

，吃东西，随便是什么——都可以。当日出越过山涧，我未老，你依然。

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