TechNexion TEVS Camera for Renesas RZ/V2H-EVK

Introduction

TechNexion Embedded Vision Solutions provide embedded system developers access to high-performance, industrial-grade camera solutions to accelerate their time to market for embedded vision projects.

Support Camera Modules

More Camera Products Details...

Supported Raspberry Pi

• RZ/V2H-EVK

Support System Version

• RZ/V2H AI SDK v3.00

Install TN Camera on Raspberry Pi

Adaptor for RZ/V2H-EVK

TEVS-RPI22 Adaptor for TEVS camera

Connect TEVS camera and TEVS-RPI22 adaptor to RZ/V2H-EVK - "CN7/CN8/CN10/CN9" directly.

Method 1 - Pre-built Image for TEVS Camera on RZ/V2H-EVK

We provide a pre-built image to simplify using TEVS camera on RZ/V2H-EVK.

1. Download the image from the following link.
   RZ/V2H + Yocto-AI-v3.0 + TEVS

2. Install necessary tool.

   $ sudo apt-get update
   $ sudo apt-get install -y unzip bmap-tools

3. Extract the pre-built image.

   $ unzip rzv2h-evk-ver1_yocto-ai-v3_tevs_demo_20240828.zip

4. Flash SD Card with the image.

   • Enter the pre-built image directory

     $ cd ./rzv2h-evk-ver1_yocto-ai-v3_tevs_demo_20240828

   • Use bmaptool to flash the image to the SD card

     # ${device} is your device path name, such as /dev/sdb
     $ umount ${device}?
     $ sudo bmaptool copy --bmap rzv2h-evk-ver1_yocto-ai-v3_tevs_demo_20240828.rootfs.wic.bmap \
     rzv2h-evk-ver1_yocto-ai-v3_tevs_demo_20240828.rootfs.wic.gz ${device}

Method 2 - Build the RZ/V2H AI SDK Source Code with Technexion patch

Please refernece "How to build RZ/V2H AI SDK Source Code" and follow the steps below:

1. Download the SDK source code.
   RZ/V2H AI SDK Source Code

2. Install necessary tool.

   $ sudo apt-get update
   $ sudo apt-get install -y gawk wget git-core diffstat unzip bmap-tools texinfo \
   gcc-multilib build-essential chrpath socat cpio python python3 python3-pip \
   python3-pexpect xz-utils debianutils iputils-ping libsdl1.2-dev xterm p7zip-full \
   libyaml-dev libssl-dev

3. Extract the SDK source code.

   • Unpack the source code archive

     $ unzip RTK0EF0180F03000SJ_linux-src.zip

   • Create a folder for the Yocto recipe package

     $ mkdir -p ./yocto_ai_v3.00

   • Extract the Yocto recipe package to the specified directory

     $ tar zxvf rzv2h_ai-sdk_yocto_recipe_v3.00.tar.gz -C ./yocto_ai_v3.00

4. Change graphics library to unrestricted version. (Optional)

   • Download RTK0EF0045Z14001ZJ-v1.2.1_rzv_EN.zip

   • Remove the original graphics library

     $ rm -rf ./yocto_ai_v3.00/meta-rz-features/meta-rz-graphics

   • Unpack the source code archive

     $ unzip RTK0EF0045Z14001ZJ-v1.2.1_rzv_EN.zip

   • Extract unrestricted version to the specified directory

     $ tar zxvf RTK0EF0045Z14001ZJ-v1.2.1_rzv_EN/meta-rz-features_graphics_v1.2.1.tar.gz -C ./yocto_ai_v3.00

5. Get TEVS camera driver patch.

   • Clone Technexion renessas camera driver repository

     $ git clone -b ai-sdk-v3.00 https://github.com/TechNexion-Vision/Renesas-Camera-Driver.git

   • Copy the driver patch to the Yocto recipe directory

     $ cp ./Renesas-Camera-Driver/TechNexion_TEVS.patch ./yocto_ai_v3.00

6. Apply patch files to fix link error.

   • Enter the Yocto recipe directory

     $ cd ./yocto_ai_v3.00

   • Download and apply the required patch files

     $ wget https://github.com/renesas-rz/rzv_ai_sdk/releases/download/v3.00/0001-recipes-debian-buster-glibc-Update-version-from-2.28.patch
     $ wget https://github.com/renesas-rz/rzv_ai_sdk/releases/download/v3.00/0001-rz-common-recipes-debian-buster-glibc-update-to-v2.28-10+deb10u4.patch
     $ wget https://github.com/renesas-rz/rzv_ai_sdk/releases/download/v3.00/61835_update_url_gst_common.patch
     
     $ patch -d ./meta-renesas -p1 < 0001-recipes-debian-buster-glibc-Update-version-from-2.28.patch
     $ patch -d ./meta-renesas -p1 < 0001-rz-common-recipes-debian-buster-glibc-update-to-v2.28-10+deb10u4.patch
     $ patch -d ./meta-rz-features/meta-rz-codecs -p1 < 61835_update_url_gst_common.patch

7. Apply TEVS camera driver patch.

   $ patch -p1 -i ./TechNexion_TEVS.patch

8. Initialize a build in poky.

   $ TEMPLATECONF=${PWD}/meta-renesas/meta-rzv2h/docs/template/conf/ source poky/oe-init-build-env

9. Add layers to bblayers.conf.

   $ bitbake-layers add-layer ../meta-rz-features/meta-rz-graphics
   $ bitbake-layers add-layer ../meta-rz-features/meta-rz-drpai
   $ bitbake-layers add-layer ../meta-rz-features/meta-rz-opencva
   $ bitbake-layers add-layer ../meta-rz-features/meta-rz-codecs
   $ bitbake-layers add-layer ../meta-tn

10. Apply a patch fot Tesseract Open Source OCR Engine.

    $ patch -p1 < ../0001-tesseract.patch

11. Build the kerenl files.

    $ MACHINE=rzv2h-evk-ver1 bitbake core-image-weston

12. Flash SD Card with the image.

    • Enter the Yocto build images directory

      $ cd ./tmp/deploy/images/rzv2h-evk-ver1

    • Use bmaptool to flash the image to the SD card

      # ${device} is your device path name, such as /dev/sdb
      $ umount ${device}?
      $ sudo bmaptool copy --bmap core-image-weston-rzv2h-evk-ver1-*.rootfs.wic.bmap \
      core-image-weston-rzv2h-evk-ver1-*.rootfs.wic.gz ${device}

Stream on Camera by GStreamer

Once EVK has finished booting, you will see some archives in the home directory.

root@rzv2h-evk-ver1:~# ls -l

-rwxr--r--  1 root root 3599 Mar  9  2018 gstreamer-init-tevs-4cam.sh
-rwxr--r--  1 root root 1424 Mar  9  2018 gstreamer-init-tevs.sh
-rwxr--r--  1 root root  845 Mar  9  2018 v4l2-init.sh

There are two main scripts to help you easily set up and stream from TEVS camera.

• gstreamer-init-tevs.sh

  Usage: gstreamer-init-tevs.sh [media_node] [resolution]
      [media_node]: 0 or /dev/media0 is a sample
      [resolution]: 640x480 is a sample

  This script requires two arguments to set up the camera:

  • media_node - The media device node.

  • resolution - The supported resolution depend on the camera.

  Example command:

  root@rzv2h-evk-ver1:~# sh gstreamer-init-tevs.sh 0 640x480

• gstreamer-init-tevs-4cam.sh

  Usage: gstreamer-init-tevs-4cam.sh [resolution]
      [resolution]: 640x480 is a sample

  This script requires one argument to set up four cameras at once.

  • resolution - The supported resolution depend on the camera.

  Example command:

  root@rzv2h-evk-ver1:~# sh gstreamer-init-tevs-4cam.sh 640x480