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SNNF demo includes the following model samples

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If you plan to use it, you must make the following modifications.

  1. Modify the linux/kernel/arch/arm64/boot/dts/sunplus/sp7350-dm.dts before building the C3V image, enable OV5640_IN4.

Code Block
languagediff
@@ -19,7 +19,7 @@
 //#define IMX708_IN5
 //#define OV5640_IN2
 //#define OV5640_IN3
-//#define OV5640_IN4
+#define OV5640_IN4
 //#define OV5640_IN5
 //#define OV5647_IN2
 //#define OV5647_IN3

  1. To improve the speed of reading data from the sensor, execute the following command before running the SNNF demo.

Code Block
languagebash
root@ubuntu:/snnf_demo_release# cat /sys/module/videobuf2_dma_contig/parameters/remap
N
root@ubuntu:/snnf_demo_release# echo 1 > /sys/module/videobuf2_dma_contig/parameters/remap
root@ubuntu:/snnf_demo_release# cat /sys/module/videobuf2_dma_contig/parameters/remap
Y

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Set the jump cap in the above figure to the ON state and unplug the HDMI cable.

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Set the jump cap in the above figure to OFF, power off the Panel connected to MIPI, and plug in the HDMI cable.

...

Code Block
languageplain
root@ubuntu:/snnf_demo_release# ls -al
total 24
drwxr-xr-x  5 10860 11400 4096 Nov  7 11:30 .
drwxr-xr-x  4 root  root  4096 Nov  7 11:17 ..
drwxr-xr-x  3 10860 11400 4096 Nov  7 10:52 bin
drwxr-xr-x 13 10860 11400 4096 Nov  7 10:54 dependency_libraries
-rw-r--r--  1 10860 11400 1887 Nov  7 11:30 snnf_demo_env.sh
drwxr-xr-x  5 10860 11400 4096 Nov  7 12:09 snnf_demo_src

  1. cd snnf_demo_src

Code Block
languageplain
root@ubuntu:/snnf_demo_release/snnf_demo_src# ls -al
total 80
drwxr-xr-x 5 10860 11400  4096 Nov  7 12:09 .
drwxr-xr-x 5 10860 11400  4096 Nov  7 11:30 ..
-rw-r--r-- 1 10860 11400  6770 Nov  7 11:00 main.cpp
-rw-r--r-- 1 root  root  40776 Nov  7 12:09 main.o
-rw-r--r-- 1 10860 11400  4653 Nov  7 11:00 makefile
drwxr-xr-x 2 10860 11400  4096 Nov  7 12:09 out
drwxr-xr-x 5 10860 11400  4096 Nov  7 10:53 snnf_demo
-rw-r--r-- 1 10860 11400  1803 Nov  7 11:00 snnf_demo_env.sh
drwxr-xr-x 5 10860 11400  4096 Nov  7 10:44 src

  1. Ensure that "CROSS_COMPILE" in the makefile is set to "NO"

Code Block
languagebash
PLATFORM_ROOT = ../../../../../../
PROJECT_ROOT = ../
OUT_DIR = out

CROSS_COMPILE := NO

ifeq ($(CROSS_COMPILE), YES)
###config toolchain
# TOOLCHAIN_PREFIX = $(PLATFORM_ROOT)/crossgcc/gcc-arm-9.2-2019.12-x86_64-aarch64-none-linux-gnu/bin/aarch64-none-linux-gnu-
include $(PLATFORM_ROOT)/crossgcc/toolchain.config
TOOLCHAIN_PREFIX=$(TOOLCHAIN_AARCH64_PATH)/bin/$(TOOLCHAIN_AARCH64_PREFIX)-
CC = ${TOOLCHAIN_PREFIX}gcc
CXX = ${TOOLCHAIN_PREFIX}g++
else
CC = gcc
CXX = g++
endif

  1. make

  2. Run snnf_demo, please refer to the How to run SNNF Demo.

...

Code Block
languageplain
root@ubuntu:/snnf_demo_release# ls -al
total 24
drwxr-xr-x  5 10860 11400 4096 Nov  7 11:30 .
drwxr-xr-x  4 root  root  4096 Nov  7 11:17 ..
drwxr-xr-x  3 10860 11400 4096 Nov  7 10:52 bin
drwxr-xr-x 13 10860 11400 4096 Nov  7 10:54 dependency_libraries
-rw-r--r--  1 10860 11400 1887 Nov  7 11:30 snnf_demo_env.sh
drwxr-xr-x  5 10860 11400 4096 Nov  7 12:09 snnf_demo_src

  1. cd snnf_demo_src

Code Block
languageplain
root@ubuntu:/snnf_demo_release/snnf_demo_src# ls -al
total 80
drwxr-xr-x 5 10860 11400  4096 Nov  7 12:09 .
drwxr-xr-x 5 10860 11400  4096 Nov  7 11:30 ..
-rw-r--r-- 1 10860 11400  6770 Nov  7 11:00 main.cpp
-rw-r--r-- 1 root  root  40776 Nov  7 12:09 main.o
-rw-r--r-- 1 10860 11400  4653 Nov  7 11:00 makefile
drwxr-xr-x 2 10860 11400  4096 Nov  7 12:09 out
drwxr-xr-x 5 10860 11400  4096 Nov  7 10:53 snnf_demo
-rw-r--r-- 1 10860 11400  1803 Nov  7 11:00 snnf_demo_env.sh
drwxr-xr-x 5 10860 11400  4096 Nov  7 10:44 src

  1. Ensure that "CROSS_COMPILE" in the makefile is set to "YES", and modify the toolchain path("TOOLCHAIN_PREFIX") in the makefile

Code Block
languagebash
PLATFORM_ROOT = ../../../../../../
PROJECT_ROOT = ../
OUT_DIR = out

CROSS_COMPILE := YES

ifeq ($(CROSS_COMPILE), YES)
###config toolchain
# TOOLCHAIN_PREFIX = $(PLATFORM_ROOT)/crossgcc/gcc-arm-9.2-2019.12-x86_64-aarch64-none-linux-gnu/bin/aarch64-none-linux-gnu-
include $(PLATFORM_ROOT)/crossgcc/toolchain.config
TOOLCHAIN_PREFIX=$(TOOLCHAIN_AARCH64_PATH)/bin/$(TOOLCHAIN_AARCH64_PREFIX)-
CC = ${TOOLCHAIN_PREFIX}gcc
CXX = ${TOOLCHAIN_PREFIX}g++
else
CC = gcc
CXX = g++
endif

  1. make

  2. Copy the newly compiled snnf_demo program and the folder named "dependency_libraries" from the snnf_demo_delease folder to C3V Linux.

Code Block
languagebash
/snnf_demo_release# cp snnf_demo_src/out/snnf_demo ==> <C3V Platform>/snnf_demo_release
/snnf_demo_release# cp snnf_demo_env.sh  ==>  <C3V Platform>/snnf_demo_release
/snnf_demo_release# cp dependency_libraries ==> <C3V Platform>/snnf_demo_release

  1. Run snnf_demo, please refer to the How to run SNNF Demo.

Setup the running environment

  1. Copy the newly compiled snnf_demo program and the folder named "dependency_libraries" from the snnf_demo_release folder to C3V Linux.

Code Block
languagebash
/snnf_demo_release# cp snnf_demo_src/out/snnf_demo ==> <C3V Platform>/snnf_demo_release
/snnf_demo_release# cp snnf_demo_env.sh  ==>  <C3V Platform>/snnf_demo_release
/snnf_demo_release# cp dependency_libraries ==> <C3V Platform>/snnf_demo_release

...

The path of resource files：dependency_libraries/snnf_release/resource

Code Block
languagebash
#cp dependency_libraries/snnf_release/resource/* ==> <C3V Platform>/etc/snnf/

...

Switch to the directory where the dependency_libraries are located, then set the environment variable.

...

  1. Before running snnf_demo, please refer to Setup the running environment.

  2. Run snnf_demo.

    Code Block
    languagebash
    root@ubuntu:/snnf_demo_release# ./snnf_demo -h
Usage: ./snnf_demo [options]
Options:
  -h, --help                Print this help message and exit
  -v, --video ARG           Specify the video file or device (default: /dev/video0, e.g., /dev/video40, /mnt/test.mp4)
  -f, --format ARG          Specify the video capture format (default: YUYV, only YUYV, UYVY, YUY2 are supported)
  -s, --size ARG            Specify the video capture size (default: 640x480, e.g., 1920x1080, 1280x720)
  -r, --framerate ARG       Specify the video capture frame rate (default: 30)

    1. Obtaining input data through the camera

      • Use default param

        Code Block
        languagebash
        root@ubuntu:/snnf_demo_release# ./snnf_demo

      • Set the video size/fps/YUV format by cmd.

        Code Block
        languagebash
        root@ubuntu:/snnf_demo_release# ./snnf_demo -v /dev/video40 -s 1280x720 -f UYVY -r 30

      • How to get the format supported by the camera?

        Code Block
        languagebash
        root@ubuntu:/snnf_demo_release# v4l2-ctl --list-formats-ext -d 40
        snnf_demo_camera_format.png

    2. Obtaining input data through the video file

      Code Block
      languagebash
      root@ubuntu:/snnf_demo_release# ./snnf_demo -v /etc/snnf/video/humanCount.mp4

  3. See the demo's effects please refer to the SNNF Demo Introduction.