YOLOv8 Video Stream Inference on Milk-V Duo 256M Fails with Sensor Config Errors and Missing Camera Nodes

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Body:
Hi all,
I’m trying to deploy YOLOv8 for video stream inference on a Milk-V Duo 256M device using the milkv-duos-musl-riscv64-sd image. However, I encounter two critical issues:

Sensor Config Parsing Failure
The application fails to parse /mnt/data/sensor_cfg.ini with the following log:

[SAMPLE_COMM_SNS_ParseIni]-2219: Parse /mnt/data/sensor_cfg.ini
[parse_source_devnum]-1812: devNum = 1
[parse_sensor_name]-1893: sensor = GCORE_GC2083_MIPI_2M_30FPS_10BIT
[parse_sensor_busid]-1922: bus_id = 2
[parse_sensor_i2caddr]-1933: sns_i2c_addr = 37
[parse_sensor_mipidev]-1944: mipi_dev = 0
[parse_sensor_laneid]-1955: Lane_id = 1, 0, 2, -1, -1
[parse_sensor_pnswap]-1966: pn_swap = 0, 0, 0, 0, 0
Failed to get senor infomation from ini file (/mnt/data/sensor_cfg.ini).

Missing Camera Device Nodes
The system reports missing nodes:
:x: Device node missing: /dev/video0
:x: Device node missing: /dev/video1
However, /dev/cvi-vi and /dev/cvi-vpss exist.
Any advice on debugging steps or configuration adjustments would be greatly appreciated!

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2

It can be important to specify which version you’re using.

3

Hi guys,

I’m having the same problem. I’m using module 01 with SDK version 2, following the steps described in the documentation.

https://milkv.io/docs/duo/application-development/tdl-sdk/tdl-sdk-introduction

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4

I am currently using the following firmware image on my Milk-V Duo S device:milkv-duo256m-musl-riscv64-sd_2025-0604-0928.img

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5

I’ve never tried running any Duo 256M firmware on Duo S. Why exactly are you trying this?

6

Sorry,my mistake,the device is Duo256M。

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7

That’s fine. What’s more important: have you built the image yourself? If yes, it is important which repo you cloned (v1 or v2), and which branch and state (commit hash) it was built on — the official releases supply differently named files.

I myself don’t have the camera and can’t test such a setup.

8

Thank you very much for your response. I used the official Buildroot SDK V2 method to build the milkv-duos-musl-riscv64-sd image file via the one-step compilation approach after obtaining the SDK. The documentation link is as follows: Introduction | Milk-V.
Even after trying the official face recognition implementation, the same error persists. I have attempted multiple methods but still cannot resolve this issue. The camera only runs with the camera-test.sh script, yet the following error still occurs. I suspect it might be a problem with library files, but I can confirm the relevant libraries exist on my development board.


[root@milkv-duo]~# camera-test.sh
[SAMPLE_COMM_SNS_ParseIni]-2219: Parse /mnt/data/sensor_cfg.ini  
[parse_source_devnum]-1812: devNum =  1  
[parse_sensor_name]-1893: sensor =  GCORE_GC2083_MIPI_2M_30FPS_10BIT  
[parse_sensor_busid]-1922: bus_id =  2  
[parse_sensor_i2caddr]-1933: sns_i2c_addr =  37  
[parse_sensor_mipidev]-1944: mipi_dev =  0  
[parse_sensor_laneid]-1955: Lane_id =  1, 0, 2, -1, -1  
[parse_sensor_pnswap]-1966: pn_swap =  0, 0, 0, 0, 0  
MMF Version:6b03c2762-64bit  
Create VBPool[0], size: (3110400 * 5) = 15552000 bytes  
Create VBPool[1], size: (1382400 * 5) = 6912000 bytes  
Create VBPool[2], size: (2764800 * 3) = 8294400 bytes  
Total memory of VB pool: 30758400 bytes  
Initialize SYS and VB  
Cannot open '/dev/cvi-vo': 2, No such file or directory  
Initialize VI  
ISP Vipipe(0) Allocate pa(0x8d056000) va(0x0x3fe1b90000) size(311584)  
stSnsrMode.u16Width 1920 stSnsrMode.u16Height 1080 30.000000 wdrMode 0 pstSnsObj 0x3fe264a3e8  
[SAMPLE_COMM_VI_StartMIPI]-494: sensor 0 stDevAttr.devno 0  
awbInit ver 6.9@2021500  
0 R:1400 B:3100 CT:2850  
1 R:1500 B:2500 CT:3900  
2 R:2300 B:1600 CT:6500  
Golden 1024 1024 1024  
WB Quadratic:0  
isWdr:0  
ViPipe:0,===GC2083 1080P 30fps 10bit LINE Init OK!===
********************************************************************************  
cvi_bin_isp message  
gerritId:      NULL           commitId:      6b03c2762      
md5:           1b6dd6bec5dfd417b8d1136b9ca0aa67  
sensorNum      1              
sensorName0    2083           

PQBIN message  
gerritId:      80171          commitId:      5c9d8fc5d      
md5:           ba5a510e093ad42db6788e6c2d13169e  
sensorNum      3              
sensorName0    2053           

author:        wanqiang.he    desc:          思博慧CV1812H_GC2083_RGB_mode_V1.0.0  
createTime:    2023-08-04 16:48:08version:       V1.1           
tool Version:       v3.0.5.24           mode:      
********************************************************************************  
sensorName(0) mismatch, mwSns:2083 != pqBinSns:2053  
19700101 00:14:14.105 1929 E isp AF_GetAttr:574 pstFocusMpiAttr is NULL  
JSON_READ_ERR:NOT_EXIST 71(L) lblc  
JSON_READ_ERR:NOT_EXIST 71(L) lblcLut  
JSON_READ_ERR:NOT_EXIST 71(L) clut_hsl  
JSON_READ_ERR:DATA_TYPE 77(L) vc_motion.MotionThreshold  
JSON_READ_ERR:NOT_EXIST 71(L) teaisp_bnr  
JSON_READ_ERR:NOT_EXIST 71(L) teaisp_bnr_np  
JSON_READ_ERR:NOT_EXIST 71(L) AWBAttrEx.u16MultiLSThr  
JSON_READ_ERR:NOT_EXIST 71(L) AWBAttrEx.u16CALumaDiff  
JSON_READ_ERR:NOT_EXIST 71(L) AWBAttrEx.u16CAAdjustRatio  
JSON_READ_ERR:NOT_EXIST 71(L) AWBAttrEx.stInterference  
JSON_READ_ERR:NOT_EXIST 71(L) FocusAttr  
19700101 00:14:14.451 1929 E isp AF_SetAttr:558 pstFocusMpiAttr is NULL  
[SAMPLE_COMM_ISP_Thread]-390: ISP Dev 0 running!  
Initialize VPSS  
---------VPSS[0]---------  
Input size: (1920x1080)  
Input format: (19)  
VPSS physical device number: 1  
Src Frame Rate: -1  
Dst Frame Rate: -1  
    --------CHN[0]-------  
    Output size: (1280x720)  
    Depth: 1  
    Do normalization: 0  
        Src Frame Rate: -1  
        Dst Frame Rate: -1  
    ----------------------  
    --------CHN[1]-------  
    Output size: (1280x720)  
    Depth: 1  
    Do normalization: 0  
        Src Frame Rate: -1  
        Dst Frame Rate: -1  
    ----------------------  
------------------------  
Bind VI with VPSS Grp(0), Chn(0)  
Attach VBPool(0) to VPSS Grp(0) Chn(0)  
Attach VBPool(1) to VPSS Grp(0) Chn(1)  
Initialize VENC  
venc codec: h264  
venc frame size: 1280x720  
Initialize RTSP  
rtsp://127.0.1.1/h264  
prio:0  
Cannot open '/dev/cvi-vo': 2, No such file or directory  
anchor:-8,-8,8,8  
anchor:-16,-16,16,16  
bbox:bbox_8_Conv_dequant  
landmark:kps_8_Conv_dequant  
score:score_8_Sigmoid_dequant  
anchor:-32,-32,32,32  
anchor:-64,-64,64,64  
bbox:bbox_16_Conv_dequant  
landmark:kps_16_Conv_dequant  
score:score_16_Sigmoid_dequant  
anchor:-128,-128,128,128  
anchor:-256,-256,256,256  
bbox:bbox_32_Conv_dequant  
landmark:kps_32_Conv_dequant  
score:score_32_Sigmoid_dequant  
Enter TDL thread  
Enter encoder thread  
0 R:1165 B:3087 CT:2688  
1 R:1464 B:2327 CT:3937  
2 R:1974 B:1613 CT:7225  
Golden 1464 1024 2327  
wdrLEOnly:1  
face count: 1strong text
1 Like
9

I have the same error using a DuoS board. I used the latest official image V2.0.1 installed using SD card ( milkv-duos-musl-riscv64-sd_v2.0.1.img.zip.

I can run the camera-test.sh program and it works fine. However, when trying to run the person detection (The following example: yolov8-person-pet-det-example). This was unsuccessful and I get the same error: Failed to get senor infomation from ini file (/mnt/data/sensor_cfg.ini).

Also the documentation needs to be updated. For example the link to the pet-det cvimodel is dead and needs to be updated (https://github.com/sophgo/tdl_models/blob/main/cv181x/pet_det_640x384.cvimodel).

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