1.查看串口

ll /dev/

?串口權(quán)限

chmod 666 /dev/ttyUSB0 KERNEL=="ttyUSB[0-9]*", MODE="0666"

串口別名區(qū)分的方法，一種通過外設(shè)芯片識別設(shè)置別名，另一種通過識別工控機的串口的設(shè)置別名

2.通過ID綁定USB設(shè)備

lsusb???? 插拔USB口

sudo gedit /etc/udev/rules.d/10-local.rules

KERNEL=="ttyUSB*", ATTRS{idVendor}=="1a86", ATTRS{idProduct}=="7523", MODE:="0777", SYMLINK+="base"

ll /dev | grep ttyUSB

添加成功

也可以通過串口軟件查詢/dev/stm32f767，/dev/設(shè)置的別名，看是否能open

2.若ID相同需通過固定串口添加USB設(shè)備

udevadm info -a -n /dev/ttyUSB0 | grep KERNELS?????? 查看值

sudo gedit /etc/udev/rules.d/10-local.rules

ACTION=="add",KERNELS=="3-1:1.0",SUBSYSTEMS=="usb",MODE:="0777",SYMLINK+="base"

從此USB口插入的設(shè)備都叫base

3.攝像頭別名

sudo gedit /etc/udev/rules.d/10-local.rules

KERNEL=="video*",ATTRS{idVendor}=="0c45", ATTRS{idProduct}=="6230", MODE="0666",SYMLINK+="video11" KERNEL=="video*",ATTRS{idVendor}=="0c45", ATTRS{idProduct}=="636b", MODE="0666",SYMLINK+="video12"

重新插拔設(shè)備

?

//******************** //打開攝像頭 //******************** #include <opencv2/core.hpp> #include <opencv2/imgcodecs.hpp> #include <opencv2/highgui.hpp>#include <iostream>using namespace cv; using namespace std;int main( int argc, char** argv ) {cv::VideoCapture capture(atoi(argv[1]));if (!capture.isOpened()){ return 1;}cv::Mat Frame;bool stop = false;while (!stop){capture >> Frame;cv::imshow("視頻", Frame);waitKey(10); }return 0; }

?CMakeLists.txt

cmake_minimum_required(VERSION 2.8) project( DisplayCamera )find_package( OpenCV 4 REQUIRED ) # 添加頭文件 include_directories( ${OpenCV_INCLUDE_DIRS} ) add_executable( DisplayCamera camera.cpp ) target_link_libraries(DisplayCamera ${OpenCV_LIBS})

?編譯運行

mkdir build cd build cmake ..&&make ./DisplayCamera 11

?

?

4.刪除別名

cd /etc/udev/rules.d

sudo rm -rf 10-local.rules

總結(jié)

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