LC-PI-H3

Product name

LCPI PC V7 computer development board Allwinner H3 chip open source programming microcontroller 1G memory with WiFi and EMMC

Overview

LCPI PC V7 development board is equipped with Allwinner H3 processor. H3 is a complete 4K smart TV set-top box solution under Allwinner Technology. It is based on the quad-core Cortex-A7 CPU architecture and supports H.265/HEVC4K@30fps Video hard solution adopts ARM Mali series graphics processing architecture with a working frequency of over 600MHz,built-in t-Coffer based on ARM TrustZone security technology,and integrates the latest SmartColor display engine of Allwinner. The development board integrates rich peripherals such as CSI camera,Ethernet,WiFi,USB interface and 2*20Pin GPIO outlet (compatible with Lctech IO), which is not only a microcomputer that can realize audio-visual entertainment,but also can be used for Linux/Android programming learning And project development,support Android4.4,Ubuntu,Debian and other operating systems.

Function

CPU:AllwinnerH3 Quad-core ARM Cortex -A7 MPCore Quad-core
GPU：ARM Mali400MP2 GPU,support OpenGL ES2.0 and OpenVG 1.1 standard
Memory: 512MB/1GB DDR3 (shared with GPU)
Memory card: Onboard self-popping TF card holder, maximum support 64GB TF card
EMMC: 8G EMMC memory chip
Wired network: 10/100M RJ45 Ethernet interface
Wireless network: onboard RTL8189 2.4GHz WiFi transmission IC and IPEX antenna interface
Video input: onboard 24Pin CSI camera interface
Video output: HDMI & CVBS, support to connect monitor/TV with HDMI/CVBS port
Audio input: onboard 4.5*2.2mm electret microphone
Audio output: HDMI and 3.5mm CVBS interface (requires an adapter cable when connecting to headphones/amplifier)
USB interface: 2 X USB 2.0 Host interface
Infrared: Onboard infrared receiver, can be used with remote control
GPIO: onboard 2.54mm 2*20Pin GPIO pin header, compatible with Raspberry Pi
UART: onboard 2.54mm 1*3Pin UART pin header
Keys: onboard power and reset keys
Power supply: Type-C USB5V power input
LED light: onboard status indicator
System: Support Android4.4, Ubuntu, Debian and other operating systems

Introduction

1.Introduce for LCPI H3 V7 development board interface

2.Board size:85*56mm Weight:37g

3.Introduce for GPIO pin

4.Introduce for CSI camera interface

Hardware connection

1.System burning
(1)Burn Android system to SD card
The development board can start the system from the SD card/EMMC. When the SD card is plugged in, it will start from the SD card by default, and when the SD card is unplugged, it will start from the EMMC. The following is the method of burning the system to the SD card:
Insert the SD card into the computer, open the PhonixCard 4.1.2 software, click "Firmware" to load the Image system file, select "Start Card", click "Burn Card",After the programming is completed, insert the card into the SD card slot, and power on the development board again.

(2)Burn Android system to EMMC
To burn the system to EMMC,you need to burn the system to SD card first,and then load it to EMMC,the method is as follows:
● Insert the SD card into the computer,open the PhonixCard 4.1.2 software,click "Firmware" to load the Image system file, select "Start Card",and click "Burn Card".

● After burning, insert the SD card into the SD card slot of the development board. After power on, the EMMC will be automatically programmed. Wait for the progress bar to complete and then shut down. When the SD card is removed and the system is restarted, the system can start from the EMMC, as follows:

Basic testing

1.Camera test
Insert the OV5640 camera module dedicated to the development board into the CMAERA interface (24Pin FPC) in the off state, turn it on, click the camera test software, and you can see the image, as follows:

2.WIFi test
Plug in the WIFI antenna, enable the WIFI function in the settings, enter the WIFI password to be connected through the mouse/keyboard, and connect to the router, as follows:

3.USB OTG interface test
Connect a device with a Micro USB interface (such as a USBHUB hub) to the OTG, and the device can be correctly identified, as follows:

USB HUB

4.UART interface test
The UART debugging interface can check the running status of the board,such as checking the serial port output when starting up,the method is as follows:
● Prepare a USB-to-TTL serial port module (for example: CH340, CP2102, etc.),the GND,TX,and RX of the serial port module are respectively connected to the GND,RX,and TX of the development board

USB to TTL serial port module, when using the serial port debugging function, a USB to TTL module and a Dupont cable are required to connect the development board and the computer

●Open the putty debugging software, select the correct port number and baud rate, and click "Open"

●Power on the development board, if it can output debugging information, it means that the UART interface is OK

5.HDMI test
The HDMI interface is connected to the monitor,and the image can be displayed normally. If it is a monitor with speakers,there will be sound output.

6.Key test
PWR power button: press the screen once, and then turn on the screen again
RST reset button: can restart the device

7.Microphone test
Open the recording software,click "Record",click "Stop" after recording,and then click "Play" to preview the sound just recorded,as follows:

8.CVBS interface test
Use the TV box to connect the development board to the monitor/television with CVBS interface with one-to-three AV cables,and only need to be able to display images and hear sound,as follows:

9. Double layer USB test
Insert a USB device (such as a mouse, U disk),and it can be recognized (Note: If you use the system sun8iw7p1_android_dolphin-p2_uart0_app-2020-11-05,the USB port above the double-layer USB is temporarily unavailable,this is not The hardware problem is that the system has not been adapted,you can try to burn other systems).

10. Wired network test
Plug in the network cable,enable the Ethernet function in the settings,and obtain the IP address normally.

11.Remote control reception test
The onboard VS838 integrated infrared receiver supports most of the functions of TV box remote controls on the market,and can be used directly without pairing first.

Infrared remote controller

Source code compilation

1. Virtual machine installation
LC provides customers with virtual machines that have built various compilation environments. You can directly install the virtual machine for compilation.
Proceed as follows:
①Download and unzip the Ubuntu_16.04_X64_ES_LCPI.7z virtual machine file
②Open the VMware Workstation software, click "Open Virtual Machine" and locate the folder you just extracted.
Ubuntu_16.04_X64.vmx file in Ubuntu_16.04_X64_ES_LCPI-200S

③Click the green play icon on the left or in the menu bar to "Open this virtual machine"

④After entering the Ubuntu system, click on the Test account and enter the password 123456 to enter the system.

2.Source code compilation
①Click icon and press the Home/LC/CherryPi-H3 path to enter, there are two folders below:

②Enter the lichee directory, right-click the mouse and open the Terminal tool
●Enter ./build.sh config and press Enter
●Enter 1 and press Enter
●Enter 0 and press Enter
●Enter 0 and press Enter