前面文章已经在Ubuntu20.04的系统上搭建交叉编译环境，并且在EASY EAI Nano开发板上执行了第一个程序。

一、下载源码

使用git工具，将远程仓库clone至本地：

git clone https://github.com/EASY-EAI/EASY-EAI-Toolkit-C-Solution.git

toolkit内置好几个AI案例，选择solu-helmetDetect。

root@EliteDesk:/media/rv1126/EASY-EAI-Toolkit/EASY-EAI-Toolkit-C-Solution$ ls
easyeai-api  LICENSE  README_CN.md  README.md  solu-EAI-box  solu-faceDetect  solu-faceRecognition  solu-helmetDetect  solu-personDetect  solu-qrdecode  solu-rtspMulitPlayer

二、编译源码

开发环境中执行./build.sh，过程&结果如下图：

在Release目录下生成了solu-helmetDetect可执行程序。

三、上传

需要上传2个文件，一个是前面生成的solu-helmetDetect文件，还有一个是官方提供的模型文件helmet_detect.model。

四、测试运行

在EASY EAI Nano开发板上执行 ./solu-helmetDetect。

[root@EASY-EAI-NANO:/userdata/Solu]# chmod 777 solu-helmetDetect
[root@EASY-EAI-NANO:/userdata/Solu]# ./solu-helmetDetect
media get entity by name: rkcif-lvds-subdev is null
media get entity by name: rkcif-lite-lvds-subdev is null
media get entity by name: rkisp-mpfbc-subdev is null
media get entity by name: rkisp_dmapath is null
media get entity by name: rkisp-mpfbc-subdev is null
media get entity by name: rkisp_dmapath is null
media get entity by name: rockchip-mipi-dphy-rx is null
[17:30:48.060264][CAMHW]:XCAM ERROR CamHwIsp20.cpp:928: No free isp&ispp needed by fake camera!
Rga built version:1.04 13a52df+2022-06-22 17:27:40
Had init the rga dev ctx = 0x57e68
Rga built version:1.04 13a52df+2022-06-22 17:27:40
##RKMEDIA Log level: 2
[RKMEDIA][SYS][Info]:text is all=2
[RKMEDIA][SYS][Info]:module is all, log_level is 2
ID: 1, sensor_name is m01_f_gc2093 1-007e, iqfiles is /etc/iqfiles
rk_aiq_uapi_sysctl_init/prepare succeed
rk_aiq_uapi_sysctl_start succeed
SAMPLE_COMM_ISP_SetFrameRate start 25
SAMPLE_COMM_ISP_SetFrameRate 25
[RKMEDIA][SYS][Info]:RK_MPI_VI_EnableChn: Enable VI[1:1]:rkispp_scale0, 1920x1080 Start...
[RKMEDIA][SYS][Info]:RKAIQ: parsing /dev/media0
media get entity by name: rkcif-lvds-subdev is null
media get entity by name: rkcif-lite-lvds-subdev is null
[RKMEDIA][SYS][Info]:RKAIQ: parsing /dev/media1
media get entity by name: rkisp-mpfbc-subdev is null
media get entity by name: rkisp_dmapath is null
[RKMEDIA][SYS][Info]:RKAIQ: model(rkisp0): isp_info(0): isp-subdev entity name: /dev/v4l-subdev5
[RKMEDIA][SYS][Info]:RKAIQ: parsing /dev/media2
media get entity by name: rkisp-mpfbc-subdev is null
media get entity by name: rkisp_dmapath is null
media get entity by name: rockchip-mipi-dphy-rx is null
[RKMEDIA][SYS][Info]:RKAIQ: model(rkisp1): isp_info(1): isp-subdev entity name: /dev/v4l-subdev9
[RKMEDIA][SYS][Info]:RKAIQ: parsing /dev/media3
[RKMEDIA][SYS][Info]:RKAIQ: model(rkispp0): ispp_info(0): ispp-subdev entity name: /dev/v4l-subdev0
[RKMEDIA][SYS][Info]:RKAIQ: parsing /dev/media4
[RKMEDIA][SYS][Info]:RKAIQ: model(rkispp1): ispp_info(1): ispp-subdev entity name: /dev/v4l-subdev1
[RKMEDIA][SYS][Info]:#V4l2Stream: camraID:1, Device:rkispp_scale0
[RKMEDIA][SYS][Warn]:camera_id: 1, chn: rkispp_scale0
[RKMEDIA][SYS][Warn]:camera_id: 1, chn: rkispp_scale0, idx: 0
[RKMEDIA][SYS][Info]:#V4l2Stream: camera id:1, VideoNode:/dev/video31
Using mplane plugin for capture
[RKMEDIA][SYS][Info]:#V4L2Ctx: open /dev/video31, fd 89
[RKMEDIA][SYS][Info]:RK_MPI_VI_EnableChn: Enable VI[1:1]:rkispp_scale0, 1920x1080 End...
[RKMEDIA][SYS][Info]:RK_MPI_VO_CreateChn: Enable VO[1] Start...
[RKMEDIA][SYS][Info]:conn id : 56, enc id: 55, crtc id: 53, plane id: 52, w/h: 720,1280, fps: 58
[RKMEDIA][SYS][Info]:RK_MPI_VO_CreateChn: Enable VO[1] End!
[RKMEDIA][SYS][Info]:RK_MPI_VO_CreateChn: Enable VO[0] Start...
[RKMEDIA][SYS][Info]:conn id : 56, enc id: 55, crtc id: 53, plane id: 54, w/h: 720,1280, fps: 58
[RKMEDIA][SYS][Info]:RK_MPI_VO_CreateChn: Enable VO[0] End!
[RKMEDIA][SYS][Info]:RK_MPI_RGA_CreateChn: Enable RGA[0], Rect<0,0,720,1280> Start...
[RKMEDIA][SYS][Info]:FilterFlow:rkrga: Enable BufferPool! memtype:hw_mem, memcnt:4
[RKMEDIA][SYS][Info]:Opened DRM device /dev/dri/card0: driver rockchip version 2.0.0.
[RKMEDIA][SYS][Info]:RK_MPI_RGA_CreateChn: Enable RGA[0], Rect<0,0,720,1280> End...
#Bind rga[0] to VM[0]:Chn[0]....
[RKMEDIA][SYS][Info]:RK_MPI_SYS_Bind: Bind Mode[RGA]:Chn[0] to Mode[VMIX]:Chn[0]...
#Bind VMX[0] to VO[0]....
[RKMEDIA][SYS][Info]:RK_MPI_SYS_Bind: Bind Mode[VMIX]:Chn[0] to Mode[VO]:Chn[0]...
[RKMEDIA][SYS][Warn]:RK_MPI_SYS_Bind: SrcChn:VMIX[0]:Chn[x] status(3) invalid!
librknn_runtime version 1.7.1 (97198ce build: 2021-11-24 09:32:17 base: 1131)

因为没有安全帽，网络上找了个戴安全帽的照片，哈哈：）

检测到安全帽：

没有带安全帽：

业务应用打印的log。

##感谢阅读##