【NanoPi NEO2试用体验】2、设置路由测试连接

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连接路由器的工作较为简单，本实验采用TCPIP_HHS方式，打开电脑上的Tear Term虚拟超级终端软件，见图21。它有两种登录方式TCPIP和串口方式，本例实验TCPIP和SSH方式，按照图21勾选。进入下一步，SSH方式需要输入用户名和密码，默认的用户名：root，密码：fa，输入后确定即可，见图22.之后进入超级终端界面。找了一个USB口的网络摄像头，连接到NanoPi的USBA口上。硬件连接示意图见照片23和24。下边是打开摄像头的命令及过程示意：
root@NanoPi-NEO2:~# cd /root/mjpg-streamer
root@NanoPi-NEO2:~/mjpg-streamer# make————编译USB摄像头命令
make: svnversion: Command not found
gcc -D'SVN_REV=""' -O2 -DLINUX -D_GNU_SOURCE -Wall -c -o mjpg_streamer.o mjpg_streamer.c
gcc -D'SVN_REV=""' -O2 -DLINUX -D_GNU_SOURCE -Wall -c -o utils.o utils.c
gcc -D'SVN_REV=""' -O2 -DLINUX -D_GNU_SOURCE -Wall  mjpg_streamer.o utils.o -lpthread -ldl -o mjpg_streamer
chmod 755 mjpg_streamer
make -C plugins/input_uvc all
make[1]: Entering directory '/root/mjpg-streamer/plugins/input_uvc'
gcc -c -O1 -DLINUX -D_GNU_SOURCE -Wall -shared -fPIC -o v4l2uvc.lo v4l2uvc.c
v4l2uvc.c: In function ‘init_videoIn’:
v4l2uvc.c:88:23: warning: variable ‘currentHeight’ set but not used [-Wunused-but-set-variable]
   int currentWidth, currentHeight = 0;
                     ^
v4l2uvc.c:88:9: warning: variable ‘currentWidth’ set but not used [-Wunused-but-set-variable]
   int currentWidth, currentHeight = 0;
      ^
gcc -c -O1 -DLINUX -D_GNU_SOURCE -Wall -shared -fPIC -o jpeg_utils.lo jpeg_utils.c
jpeg_utils.c: In function ‘compress_yuv_to_jpeg’:
jpeg_utils.c:208:27: warning: ‘v’ may be used uninitialized in this function [-Wmaybe-uninitialized]
         r = (y + (359 * v)) >> 8;
                        ^
jpeg_utils.c:209:26: warning: ‘u’ may be used uninitialized in this function [-Wmaybe-uninitialized]
         g = (y - (88 * u) - (183 * v)) >> 8;
                        ^
jpeg_utils.c:209:20: warning: ‘y’ may be used uninitialized in this function [-Wmaybe-uninitialized]
         g = (y - (88 * u) - (183 * v)) >> 8;
                  ^
gcc -c -O1 -DLINUX -D_GNU_SOURCE -Wall -shared -fPIC -o dynctrl.lo dynctrl.c
gcc -O1 -DLINUX -D_GNU_SOURCE -Wall -shared -fPIC -o input_uvc.so input_uvc.c v4l2uvc.lo jpeg_utils.lo dynctrl.lo -ljpeg
make[1]: Leaving directory '/root/mjpg-streamer/plugins/input_uvc'
cp plugins/input_uvc/input_uvc.so .
make -C plugins/output_file all
make[1]: Entering directory '/root/mjpg-streamer/plugins/output_file'
gcc -O2 -DLINUX -D_GNU_SOURCE -Wall -shared -fPIC -o output_file.so output_file.c
make[1]: Leaving directory '/root/mjpg-streamer/plugins/output_file'
cp plugins/output_file/output_file.so .
make -C plugins/output_udp all
make[1]: Entering directory '/root/mjpg-streamer/plugins/output_udp'
gcc -O2 -DLINUX -D_GNU_SOURCE -Wall -shared -fPIC -o output_udp.so output_udp.c
make[1]: Leaving directory '/root/mjpg-streamer/plugins/output_udp'
cp plugins/output_udp/output_udp.so .
make -C plugins/output_http all
make[1]: Entering directory '/root/mjpg-streamer/plugins/output_http'
gcc -c -O1 -DLINUX -D_GNU_SOURCE -Wall -shared -fPIC -o httpd.lo httpd.c
gcc -O1 -DLINUX -D_GNU_SOURCE -Wall -shared -fPIC -o output_http.so output_http.c httpd.lo
make[1]: Leaving directory '/root/mjpg-streamer/plugins/output_http'
cp plugins/output_http/output_http.so .
make -C plugins/input_file all
make[1]: Entering directory '/root/mjpg-streamer/plugins/input_file'
make[1]: Nothing to be done for 'all'.
make[1]: Leaving directory '/root/mjpg-streamer/plugins/input_file'
cp plugins/input_file/input_file.so .
到此表明编译成功，下边是加载启动网络摄像头：
root@NanoPi-NEO2:~/mjpg-streamer# ./start.sh
MJPG Streamer Version: svn rev:
i: Using V4L2 device.: /dev/video0
i: Desired Resolution: 1280 x 720
i: Frames Per Second.: 30
i: Format............: YUV
i: JPEG Quality......: 90
i: The format asked unavailable, so the width 640 height 480
o: www-folder-path...: ./www/
o: HTTP TCP port.....: 8080
o: username:password.: disabled
o: commands..........: enabled
到此网络摄像头就准备好了，可以在网络或wifi环境下打开基于摄像头的环境观看和测试。本实验从两个方面验证结果：从本地局域无线网络直接输入IP地址访问；见图25。以及用手机在外wifi网络访问；图26、图27两张为收集远程登录访问视频的截图。
至此NanoPi的有无线路由设置和实验完成。