树莓派---wiringPi串口使用（win10+树莓派3+usb转串口）

参考

1. wiringPi使用手册
2. wiringPi安装
3. wiringPi串口的配置

准备

1. 串口调试助手
2. 串口线驱动

在树莓派上用Qt写串口发送数据的程序

serialTEST.pro

QT += coreQT -= guiTARGET = testCONFIG += consoleCONFIG -= app_bundleTEMPLATE = appSOURCES += main.cppINCLUDEPATH +=/usr/local/include \               /usr/local/include/opencv \               /usr/local/include/opencv2LIBS +=/usr/local/lib/libopencv_highgui.so \        /usr/local/lib/libopencv_core.so \        /usr/local/lib/libopencv_imgproc.so \        /usr/local/lib/libopencv_imgcodecs.so\        /usr/local/lib/libopencv_videoio.so \        /usr/local/lib/libopencv_video.so \        /usr/local/lib/libopencv_videostab.so \        /usr/local/lib/libopencv_calib3d.so \        /usr/local/lib/libopencv_features2d.so\        /usr/local/lib/libopencv_flann.so \        /usr/local/lib/libopencv_ml.so \        /usr/local/lib/libopencv_objdetect.so \        /usr/local/lib/libopencv_photo.so \        /usr/local/lib/libopencv_shape.so \        /usr/local/lib/libopencv_stitching.so \        /usr/local/lib/libopencv_superres.so   #这些是opencv的库LIBS +=-lwiringPi    #这个是wiringPi的库

main.cpp

#include "opencv2/opencv.hpp"#include "opencv2/imgproc/imgproc.hpp"#include "opencv2/core/core.hpp"#include "opencv2/highgui/highgui.hpp"#include <string.h>#include <stdlib.h>#include <stdio.h>#include <wiringPi.h>#include <wiringSerial.h>#include <iostream>#include<sys/stat.h>#include<unistd.h>using namespace std;using namespace cv;int main(void){     int fd;     char str[6],str1[6];     if(wiringPiSetupSys()<0)return 1; //初始化wiringPi     sprintf(str,"%s%s%s","X","110","R");     sprintf(str1,"%s%s%s","Y","220","R");//字符串拼接，%s可替换成int/float变量while(1){    delay(10);    /*打开串口设备ttyS0，波特率9600*/    if((fd=serialOpen("/dev/ttyS0",9600))<0)       {        int time = millis();//计时函数，从wiringPi初始化开始至今        printf("serial doesn't open,return -1,time is %d",time);        return 1;         }    serialPrintf(fd,str); //向串口设备发送数据，整个str字符串    serialPrintf(fd,str1);    serialClose(fd);//发送完之后关闭串口，不然会出现程序运行一段时间后串口自动关闭的情况（serialOpen()返回-1）。    int c = waitKey(10);    if ((char)c == 27) { break; } // escape}    serialClose(fd);    return 0;}

测试

电脑接收到 “X110RY220R”