Lindenis V833

Key Features

Processor core

• Single-core ARM Cortex-A7 Processor
• ARMv7 ISA standard ARM instruction set
• Thumb-2 Technology
• Jazeller RCT
• NEON Advanced SIMD
• VFPv4 floating point
• 32KB L1 Instruction cache and 32KB L1 Data cache
• 128KB L2 cache

Video Encoding Performance

• H.264 BP/MP/HP, H.265 Main Profile encoding
• I/P/Dual P frame H.264/H.265 encoding
• MJPEG/JPEG baseline encoding
• Real-time multi-stream H.264/H.265 encoding capability：
  • 5M@20fps + 1080p@20fps (or 1080p@60fps + VGA@60fps ) H.264
  • 5M@30fps + 720p@30fps (or 1080p@90fps) H.265
• Maximum 8-megapixel resolution for H.264/H.265 encoding
• JPEG snapshot performance of 1080p@60fps independently
• CBR, VBR modes
• Output bit-rate ranging from 2kbit/s to 100Mbit/s.
• Maximum 16 ROIs without encoding for AI
• Encoding frame rate ranging from 1/16 fps to 60fps.

Video and Graphics Processing

• Support Electronic Image Stabilization Engine
• Supports Lens distortion correction, fisheye PTZ and calibration
• Picture rotation by 90°180°270°
• Support 2 Video channels, one up to 1080p@60fps, the other one up to 720p@60fps
• Support 1 UI channel, up to 1080p@60fps
• Blending of 2 Video channels and 1 UI channel
• Support SmartColor for excellent display experience

NPU Processing

• Maximum performance up to 0.4Tops
• Support Conv, Activation, Pooling, BN, LRN, FC/Inner Product
• Support Face detect, face recognition, human detection

Professional Image Effects

• Maximum performance is 2592 x1936@30fps
• Maximum resolution of is 2688 x 2688
• Adjustable 3A functions (AE, AWB and AF)
• Supports 2F WDR and Local Tone mapping,
• Supporting highlight suppression and backlight compensation, bad pixel correction, Lens shading correction
• Supports defect pixel correction, 2D/3D denoising.
• Supports image mirroring and flipping
• Provides ISP tuning tools for the PC

Various interfaces

• Wi-Fi : XR819
• BT1120 IN/OUT
• SPK, LINE-IN
• MIPI CSI, MIPI DSI, TP
• KEY, POWER_KEY, FEL
• Network: 10/100Mbps Ethernet
• USB: 1 x Micro USB, TF card
• Power Supply: 5V/2A micro USB, 5V/2A DC-IN, 3.7V Battery

Software Support

• Tina (base on linux-4.9)
• RTOS

Target Applications

• SDV
• Smart IPC
• Smart Camera

Accessories Step-by-Step Guides

Power Supply

• 5V 2A Power Supply

LCD

• 5" 720P LCD with CTP brief

Hardware Specification

Board Features

Video Out

• MIPI-DSI, 4 lanes, up to 1080P
• LCD interface
• BT1120 OUT

Video In

• 1 x MIPI-CSI - Camera interface, 4 lanes per channel
• BT1120 IN

Audio

• 3.5mm Line in
• SPK
• 1 x mic

Network

• 10/100/100 Ethernet
• WiFi 2.4G

Storage

• MicroSD Card bootable, support SDHC and SDXC, storage up to 256GB

Expansion Ports

• Flexible Pin Headers 2x13 pins Reserved:
  • GPADC
  • 5V, 1V8, 2V8 and DC Power Supply
  • I2C x 1
  • I2S x 1
  • PWM x 1

Board Information

• Board Dimensions: 75mm x 68mm
• Input Power: 5V@2A micro USB connector, 3.7V Li-Ion battery connector

SDK

Overview

Features

• Linux Kernel 4.9 (official version)
• u-boot-2018
• ARM GCC based cross toolchain
• Integrated build system

Layout

├── build
├── config
├── Config.in
├── dl
├── lichee
├── logs
├── Makefile
├── package
├── prebuilt
├── rules.mk
├── scripts
├── softwinner
├── target
├── toolchain
└── tools

Download and Build

System requirements

Listed below are the recommended requirements for downloading and building the SDK:

• CPU: x86_64 or better family processor
• Memory: 8GB or higher
• Disk: 20GB free hard disk space, if you build it in a Virtual machine, I recommand you allocate a 30G virtual hard disk.
  • The Whole SDK is about 15G.
• OS: Ubuntu 14.04 (tested) or higher
• Network: internet connection

Linux host setup

Ubuntu 14.04

HINT: later version should also work.

Install prerequisites

$ sudo apt-get update
$ sudo apt-get install build-essential libncurses5-dev zlib1g-dev gawk git git-core ccache gettext libssl-dev xsltproc gperf subversion 
$ sudo dpkg --add-architecture i386
$ sudo apt-get update
$ sudo apt-get install lib32z1 lib32ncurses5 libc6:i386 libstdc++6:i386

Sudo without password

$ sudo visudo

Add this line at the end (change “tom” to your username):

tom ALL=(ALL) NOPASSWD: ALL

Ctrl-X to leave, save your changes, and you're done!

OS

System Setup

Uart

• By default, the ttyS3 is assigned to the Linux console. The UART transmit pin called "TX" and receive pin called "RX" are in the pin group, whose label is DEBUG. And the bit rate is 115200 bps.See below red rectangle.

Ethernet

• board.dts should config as follow:

gmac0: eth@05020000 {
        compatible = "allwinner,sunxi-gmac";
        pinctrl-names = "default", "sleep";
        pinctrl-0 = <&gmac_pins_a &gmac_pins_b &gmac_pins_c &gmac_pins_d>;
        pinctrl-1 = <&gmac_pins_e>;
        phy-mode = "rmii";
        use_ephy25m = <1>;
        tx-delay = <7>;
        rx-delay = <31>;
        phy-rst = <&pio PH 4 1 1 1 0>;
        gmac-power0;
        gmac-power1;
        gmac-power2;
        status = "okay";
};

Wifi

board.dts should config as follow:

wlan:wlan {
        compatible = "allwinner,sunxi-wlan";
        clocks = <&clk_losc_out>;
        wlan_busnum = <1>;
        wlan_usbnum = <3>;
        wakeup_source = <0>;

        wlan_power-supply = <&reg_dcdc1>;
        io_regulator-supply = <&reg_dcdc5>;

        wlan_power_vol = <3300000>;
        io_regulator_vol = <3300000>;

        /*wlan_en;*/
        wlan_regon = <&pio PG 7 1 0 1 0>;
        wlan_hostwake = <&pio PG 6 0 0 1 0>;
        status = "okay";
};

Audio

audiocodec

• board.dts should config as follow:

codec:codec@0x05096000 {
        pa_level = <0x1>;
        main_gain = <0x17>;
        adcdrc_cfg = <0x00>;
        adchpf_cfg = <0x01>;
        dacdrc_cfg = <0x00>;
        dachpf_cfg = <0x00>;
        digital_vol = <0x00>;
        lineout_vol = <0x1a>;
        pa_msleep_time = <0xa0>;
        gpio-spk = <&pio PH 3 1 1 1 1>;
        status = "okay";
};

i2s

• board.dts should config as follow:

snddaudio0:sound@1 {
        audio_format = <0x01>;
        daudio_master = <0x04>;
        signal_inversion = <0x01>;
        sunxi,snddaudio-codec = "ac108.1-003b";
        sunxi,snddaudio-codec-dai = "ac108-pcm0";
        status = "disabled";
};