NanoPi NEO Core2

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1 Introduction

Overview

Front

Back

• The NanoPi NEO Core2 as its name tells is an alternative NanoPi NEO2 that works like a CPU board with male pin-headers. It has the same form facotor as the NanoPi NEO2, same pin descriptions and works with all the OS images the NanoPi NEO2 supports. The connectors and ports on the NEO2 are populated to pin-headers on the NEO2 Core. In addition the NEO Core2 can have an optional onboard eMMC flash and ESD protection for connectors and ports. There features are highly preferred by industrial customers.
• The NEO2 Core uses a popular Allwinner H5 SoC and has onboard 1G DDR3 RAM. FriendlyElec offers models with three eMMC options: 8GB(default)/16GB/32GB. FriendlyElec migrated UbuntuCore with mainline kernel 4.11 for it. It works with other OS such as Armbian as well. Compared to the NanoPi NEO2 the NanoPi NEO Core2 runs more reliably with much less overheat. It is a good platform for IoT applications, mornitoring systems, smart control systems, cluster computing and AI applications.
• FriendlyElec develops a Mini Shield for NanoPi NEO Core/Core2 which has the same form factor as the RPi 3. When a NanoPi NEO Core2 is connected to this Mini Shield the whole assembled module can be well fit into a common RPi 3's case.

2 Hardware Spec

• CPU: Allwinner H5, Quad-core 64-bit high-performance Cortex A53
• DDR3 RAM: 512MB/1GB
• Storage: 8GB/16GB/32GB eMMC
• Connectivity: 10/100/1000M Ethernet utilizing RTL8211E-VB-CG
• USB Host x 3(included in 2.54mm pitch pin header)
• MicroSD Slot x 1
• LED: x 2, one for power status and the other for system status
• GPIO1: 2.54mm pitch 12 x 2 pin header containing UART, SPI, I2C, GPIO and etc
• GPIO2: 2.54mm pitch 24 pin header containing SPI, IR, I2S, USB, serial debug port, audio and etc
• GPIO3: 2.54mm pitch 20 pin header containing USB, Gbps Ethernet, I2C and etc
• PCB Size: 40 x 40mm
• MicroUSB: OTG and power input
• OS/Software: u-boot,Ubuntu Core
• Weight: xxg(Without Pin-headers)

3 Diagram, Layout and Dimension

3.1 Layout

NanoPi NEO Core2 Layout

pinout

• GPIO1 Pin Description

Pin#	Name	Linux gpio	Pin#	Name	Linux gpio
1	SYS_3.3V		2	VDD_5V
3	I2C0_SDA / GPIOA12	12	4	VDD_5V
5	I2C0_SCL / GPIOA11	11	6	GND
7	GPIOG11	203	8	UART1_TX / GPIOG6	198
9	GND		10	UART1_RX / GPIOG7	199
11	UART2_TX / GPIOA0	0	12	GPIOA6	6
13	UART2_RTS / GPIOA2	2	14	GND
15	UART2_CTS / GPIOA3	3	16	UART1_RTS / GPIOG8	200
17	SYS_3.3V		18	UART1_CTS / GPIOG9	201
19	SPI0_MOSI / GPIOC0	64	20	GND
21	SPI0_MISO / GPIOC1	65	22	UART2_RX / GPIOA1	1
23	SPI0_CLK / GPIOC2	66	24	SPI0_CS / GPIOC3	67

• GPIO2 Pin Description

Pin#	Name	Description	Pin#	Name	Description
1	VDD_5V		2	MOSI1	SPI1-MOSI
2	USB-DP1	USB1 DP Signal	4	MISO1	SPI1-MISO
3	USB-DM1	USB1 DM Signal	6	CLK1	SPI1-CLK
4	USB-DP2	USB2 DP Signal	8	CS1	SPI1-CS
5	USB-DM2	USB2 DM Signal	10	MP	Microphone Positive Input
6	GPIOL11 / IR-RX	GPIOL11 or IR Receive	12	MN	Microphone Negative Input
7	SPDIF-OUT / GPIOA17	GPIOA17 or SPDIF-OUT	14	LR	LINE-OUT Right Channel Output
8	PCM0_SYNC / I2S0_LRCK/I2C1_SCL	I2S/PCM Sample Rate Clock/Sync	16	LL	LINE-OUT Left Channel Output
9	PCM0_CLK / I2S0_BCK/I2C1_SDA	I2S/PCM Sample Rate Clock	18	RXD	UART_RXD0/GPIOA5/PWM0
10	PCM0_DOUT / I2S0_SDOUT	I2S/PCM Serial Bata Output	20	TXD	UART_TXD0/GPIOA4
11	PCM0_DIN / I2S0_SDIN	I2S/PCM Serial Data Input	22	VDD_5V
12	GND	0V	24	GND	0V

• GPIO3 Pin Description

Pin#	Name	Description	Pin#	Name	Description
1	LINK-LED	Ethernet Link LED	2	SPEED-LED	Ethernet Speed LED
2	TRD1+	Ethernet TRD1+ Signal	4	TRD1-	Ethernet TRD1- Signal
3	TRD2+	Ethernet TRD2+ Signal	6	TRD2-	Ethernet TRD2- Signal
4	TRD3+	Ethernet TRD3+ Signal	8	TRD3-	Ethernet TRD3- Signal
5	TRD4+	Ethernet TRD4+ Signal	10	TRD4-	Ethernet TRD4- Signal
6	GND	0V	12	GND	0V
7	USB-DP3	GPIOA17 or SPDIF-OUT	14	GPIOA7
8	USB-DM2	I2S/PCM Sample Rate Clock/Sync	16	I2C2-SDA
9	VDD_5V	5V Power Out	18	I2C2-SCL
10	VDD_5V	5V Power Out	20	VDD_3.3V	3.3V Power Outt

Note:

1. SYS_3.3V: 3.3V power output
2. VVDD_5V: 5V power input/output. When the external device’s power is greater than the MicroUSB's the external device is charging the board otherwise the board powers the external device. The input range is 4.7V ~ 5.6V
3. All pins are 3.3V, output current is 5mA
4. For more details refer to its schematic: NanoPi NEO Core2-1707-Schematic.pdf

3.2 Dimensional Diagram

For more details refer to the document:pcb in dxf format

4 Get Started

4.1 Essentials You Need

Before starting to use your NanoPi NEO Core2 get the following items ready

• NanoPi NEO Core2
• microSD Card/TF Card: Class 10 or Above, minimum 8GB SDHC
• microUSB power. A 5V/2A power is a must
• A Host computer running Ubuntu 14.04 64 bit system

4.2 TF Cards We Tested

To make your NanoPi NEO Core2 boot and run fast we highly recommend you use a Class10 8GB SDHC TF card or a better one. The following cards are what we used in all our test cases presented here:

• SanDisk TF 8G Class10 Micro/SD TF card:

• SanDisk TF128G MicroSDXC TF 128G Class10 48MB/S:

• 川宇 8G C10 High Speed class10 micro SD card:

4.3 Make an Installation TF Card

4.3.1 Get Image Files

Visit this link [https://www.mediafire.com/folder/y5kqtwzt2lugb/NanoPi-NEO-Core2

download link] to download image files and the flashing utility:

Image Files:
nanopi-neo-core2_ubuntu-core-xenial_4.x.y_YYYYMMDD.img.zip	Ubuntu-Core with Qt-Embedded Image File, Kernel: Linux-4.x.y
nanopi-neo-core2_eflasher_4.x.y_YYYYMMDD.img.zip	eflasher Image File, Kernel: Linux-4.x.y
Flash Utility:
win32diskimager.rar	Windows utility for flashing Debian image. Under Linux users can use "dd"

4.3.2 Make Bootable TF Card

4.3.2.1 Make UbuntuCore with Qt Embedded Image Card

• Extract the image file and win32diskimager.rar files. Insert a TF card(at least 8G) into a Windows PC and run the win32diskimager utility as administrator. On the utility's main window select your TF card's drive, the wanted image file and click on "write" to start flashing the TF card.
• After flashing is done insert this TF card to your NanoPi NEO Core2 and connect the board to a 5V/2A power NEO Core2 will be automatically powered on. If the green LED is solid on and the blue LED is flashing it indicates the system is being booted.
  

Note: this method applies to making a bootable TF card with Debian too.

4.3.3 Flash OS to eMMC

• Extract the image file and win32diskimager.rar files. Insert a TF card(at least 8G) into a Windows PC and run the win32diskimager utility as administrator. On the utility's main window select your TF card's drive, the wanted image file and click on "write" to start flashing the TF card.
• After flashing is done insert this TF card to your NanoPi NEO Core2 and connect the board to a 5V/2A power NEO Core2 will be automatically powered on. If the green LED is solid on and the blue LED is flashing it indicates the system is being booted.
  
• Run the following commands in a terminal to flash OS to eMMC:

$ su root
$ eflasher

The password for "root" is "fa". Type a number and press "enter" to select an OS you want to flash and then type "yes" and press "enter" to start flashing:

After it is done power off the board and take out the TF card. Power on the board again and your board will boot from eMMC.

5 Work with Ubuntu-Core with Qt-Embedded

5.1 Run Ubuntu-Core with Qt-Embedded

• If you want to do kernel development you need to use a serial communication board, ie a PSU-ONECOM board, which will allow you to operate the board via a serial terminal.
  

PSU-ONECOM-NEO-Core2
Or you can use a USB to serial board to debug the system. Here is a hardware setup:
USB2UART-NEO-Core2

• Here is a setup where we connect a NanoPi NEO Core to a Mini Shield for NanoPi NEO Core/Core2. Here is an introduction to Mini Shield for NanoPi NEO Core/Core2 Mini Shield
  :

Mini Shield for NanoPi NEO Core/Core2 和 Core2

• Ubuntu-Core's User Accounts:

Non-root User:

   User Name: pi
   Password: pi

root:

   User Name: root
   Password: fa

The system is automatically logged in as "pi". You can do "sudo npi-config" to disable auto login.

• Update packages

$ sudo apt-get update

5.2 Extend NEO Core2's TF Card Section

When Ubuntu is loaded the TF card's section will be automatically extended.You can check the section's size by running the following command:

$ df -h

5.3 Configure System with npi-config

The npi-config is a commandline utility which can be used to initialize system configurations such as user password, system language, time zone, Hostname, SSH switch , Auto login, hardware interface(Serial/I2C/SPI/PWM/I2S) and etc. Type the following command to run this utility.

$ sudo npi-config

Here is how npi-config's GUI looks like:

5.4 Ethernet Connection

If a NanoPi NEO Core2 is connected to a network via Ethernet before it is powered on it will automatically obtain an IP after it is powered up. If it is not connected via Ethernet or its DHCP is not activated obtaining an IP will fail and system will hang on for about 15 to 60 seconds. In this case you can try obtaining an IP by using the following command

dhclient eth0

5.5 Connect USB WiFi to NEO Core2

Our system has support for popular USB WiFi drivers. Many USB WiFi modules are plug and play with our system. Here is a list of models we tested;

Number	Model
1	RTL8188CUS/8188EU 802.11n WLAN Adapter
2	RT2070 Wireless Adapter
3	RT2870/RT3070 Wireless Adapter
4	RTL8192CU Wireless Adapter
5	MI WiFi mt7601

If you NanoPi NEO Core2 is connected to a USB WiFi and is powered up you can log into NEO Core2 and run the following command to check if the USB WiFi is recognized. If "wlan0" is listed it indicates your USB WiFi has been recognized:

$ sudo ifconfig -a

You can use the NetworkManager utility in Ubuntu to manager its network. You can run "nmcli" in the commandline utility to start it. Here are the commands to start a WiFi connection:

• Check device list

$ sudo nmcli dev

Note: if the status of a device is "unmanaged" it means that device cannot be accessed by NetworkManager. To make is accessed you need to clear the settings under "/etc/network/interfaces" and reboot your system.

• Start WiFi

$ sudo nmcli r wifi on

• Scan Surrounding WiFi Sources

$ sudo nmcli dev wifi

• Connect to a WiFi Source

$ sudo nmcli dev wifi connect "SSID" password "PASSWORD"

The "SSID" and "PASSWORD" need to be replaced with your actual SSID and password.If you have multiple WiFi devices you need to specify the one you want to connect to a WiFi source with iface
If a connection succeeds it will be automatically setup on next system reboot.

For more details about NetworkManager refer to this link: Use NetworkManager to configure network settings

5.6 Login via SSH

The NanoPi NEO Core2 doesn't have a video output interface. You can log into the board via SSH. In our test the IP address detected by our router was 192.168.1.230 and we ran the following command to log into the NanoPi NEO Core2:

$ ssh root@192.168.1.230

The password is fa

5.7 Connect NanoPi NEO Core2 to USB Camera(FA-CAM202)

USB camera
The FA-CAM202 is a 2M-pixel USB camera module. Boot your NEO Core2, connect NEO Core2 to the internet, log in the system as root, compile and run the mjpg-streamer utility:

$ su root
$ cd /root/mjpg-streamer
$ make
$ ./start.sh

The mjpg-streamer is an open source media server. After it is started successfully you will see the following messages:

 
 i: Using V4L2 device.: /dev/video0
 i: Desired Resolution: 1280 x 720
 i: Frames Per Second.: 30
 i: Format............: YUV
 i: JPEG Quality......: 90
 o: www-folder-path...: ./www/
 o: HTTP TCP port.....: 8080
 o: username:password.: disabled
 o: commands..........: enabled

In our case our NEO Core2's IP address was 192.168.1.123. We typed "192.168.1.123:8080" on a browser, entered and we got the following screenshot:

5.8 播放和录制音频

Core2只提供了音频硬件接口(2.54mm 4pin 排针)，引脚的定义如下:

Pin#	Name	Description
1	MICIN1P	Microphone Positive Input
2	MICIN1N	Microphone Negative Input
3	LINEOUTR	LINE-OUT Right Channel Output
4	LINEOUTL	LINE-OUT Left Channel Output

用户需自行转接音频设备，参考下图:
耳麦标注
只有在已外接音频设备的前提下，才可以进行下列步骤测试播放和录制音频。
查看系统里的声卡设备：

$ aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: Codec [H3 Audio Codec], device 0: CDC PCM Codec-0 []
  Subdevices: 1/1
  Subdevice #0: subdevice #0

全志H5和H3这两款CPU内部都自带了同一个codec设备，在主线内核中被命名为[H3 Audio Codec]。

播放音频：

$ aplay /root/Music/test.wav -D plughw:0

录制音频：

$ arecord -f cd -d 5 test.wav

5.9 Access GPIO Pins/Wirings with WiringNP

The wiringPi library was initially developed by Gordon Henderson in C. It contains libraries to access GPIO, I2C, SPI, UART, PWM and etc. The wiringPi library contains various libraries, header files and a commandline utility:gpio. The gpio utility can be used to read and write GPIO pins.
FriendlyElec integrated this utility in NEO Core's system allowing users to easily access GPIO pins. For more details refer to WiringNP

6 如何编译Ubuntu-Core with Qt-Embedded系统

6.1 使用开源社区主线BSP

NEO2现已支持使用64位Linux内核，并使用64位Ubuntu Core 16.04，关于H5芯片系列开发板使用主线U-boot和Linux-4.x.y的方法，请参考维基：Mainline U-boot & Linux

6.2 使用全志原厂BSP

6.2.1 准备工作

访问此处下载地址的sources/nanopi-h5-bsp目录，下载所有压缩文件，使用7-Zip工具解压后得到lichee目录，如下：

$ ls ./
$ lichee

也可以从github上克隆lichee源码：

$ git clone https://github.com/friendlyarm/h5_lichee.git lichee

注：lichee是全志为其CPU的板级支持包所起的项目名称，里面包含了U-boot，Linux等源码和众多的编译脚本。

6.2.2 安装交叉编译器

访问此处下载地址的toolchain目录，下载压缩包gcc-linaro-arm-4.6.3.tar.xz和gcc-linaro-aarch64.tar.xz。
其中gcc-linaro-arm-4.6.3.tar.xz用于编译U-boot，gcc-linaro-aarch64.tar.xz用于编译Linux内核。下载完成后，将它们拷贝到源码lichee/brandy/toochain/目录下即可。 后面编译U-boot或者Linux内核时，编译脚本会自动解压并使用这两个编译器进行编译。

6.2.3 编译lichee源码

编译全志 H5 的BSP源码包必须使用64bit的Linux PC系统，并安装下列软件包，下列操作均基于Ubuntu-14.04 LTS-64bit：

$ sudo apt-get install gawk git gnupg flex bison gperf build-essential \
zip curl libc6-dev libncurses5-dev:i386 x11proto-core-dev \
libx11-dev:i386 libreadline6-dev:i386 libgl1-mesa-glx:i386 \
libgl1-mesa-dev g++-multilib mingw32 tofrodos \
python-markdown libxml2-utils xsltproc zlib1g-dev:i386

编译lichee源码包，执行命令：

$ cd lichee/fa_tools
$ ./build.sh -b nanopi-neo2 -p linux -t all

该命令会一次性编译好U-boot、Linux内核和模块。
lichee目录里内置了交叉编译器，当进行源码编译时，会自动使用该内置的编译器，所以无需手动安装编译器。

下列命令可以更新TF卡上的U-boot：

$ cd lichee/fa_tools/
$ ./fuse.sh -d /dev/sdX -p linux -t u-boot

/dev/sdX请替换为实际的TF卡设备文件名。
内核boot.img和驱动模块均位于linux-3.10/output目录下，将boot.img拷贝到TF卡的boot分区的根目录即可更新内核。

6.2.4 编译U-boot

注意: 必须先完整地编译整个lichee目录后，才能进行单独编译U-boot的操作。 如果你想单独编译U-boot，可以执行命令：

$ cd lichee/fa_tools/
$ ./build.sh -b nanopi-neo2 -p linux -t u-boot

下列命令可以更新TF卡上的U-boot：

$ cd lichee/fa_tools/
$ ./fuse.sh -d /dev/sdX -p linux -t u-boot

/dev/sdX请替换为实际的TF卡设备文件名。

6.2.5 编译Linux内核

注意: 必须先完整地编译整个lichee目录后，才能进行单独编译Linux内核的操作。 如果你想单独编译Linux内核，可以执行命令：

$ cd lichee/fa_tools/
$ ./build.sh -b nanopi-neo2 -p linux -t kernel

编译完成后内核boot.img和驱动模块均位于linux-3.10/output目录下，将boot.img拷贝到TF卡的boot分区的根目录即可。

6.2.6 清理lichee源码

$ cd lichee/fa_tools/
$ ./build.sh -b nanopi-neo2 -p linux -t clean

7 Connect External Modules to NEO Core2

7.1 Connect Python Programmable NanoHat OLED to NEO Core2

The NanoHat OLED module is a small and cute monochrome OLED module with low power consumption. It has three user buttons. We provide its driver's source code and a user friendly shell interface on which you can check system information and status.A customized aluminum case is made for it. You cannot miss this lovely utility! Here is a hardware setup:NanoHat OLED
NanoHat OLED_nanopi_NEO_Core2

7.2 Connect Python Programmable NanoHat Motor to NEO Core2

The NanoHat Motor module can drive four 5V PWM steering motors and four 12V DC motors or four 5V PWM steering motors and two 12V four-wire step motors.Here is a hardware setup: NanoHat Motor
NanoHat Motor_nanopi_NEO_Core2

7.3 Connect NanoHat PCM5102A to NEO Core2

The NanoHat PCM5102A module uses TI's DAC audio chip PCM5102A, a convenient and easy-to-use audio module for hobbyists. Here is a hardware setup:NanoHat PCM5102A
Matrix - NanoHat PCM5102A_nanopi_NEO_Core2

7.4 Connect Arduino Compatible UNO Dock to NEO Core2

The UNO Dock module is an Arduino board compatible with Arduino UNO and works with Arduino programs.You can use Arduino IDE to run all Arduino programs on the Dock.It also exposes the NanoPi NEO Core2's pins.It converts 12V power input to 5V/2A output.You can search for various code samples from Ubuntu's ecosystem and run on the Dock. These features make it a powerful platform for IOT projects and cloud related applications. Here is a hardware setup:UNO Dock for NanoPi NEO v1.0
Matrix-UNO_Dock_NEO_Core2

7.5 Connect NanoHat Proto to NEO Core2

The NanoHat Proto is an expansion board which exposes NEO Core2's various pins.It has an onboard EEPROM for data storage.Here is a hardware setup:NanoHat Proto
Matrix - NanoHat Proto_nanopi_NEO_Core2

7.6 Connect Matrix - 2'8 SPI Key TFT to NanoPi NEO Core2

The Matrix-2'8_SPI_Key_TFT module is a 2.8" TFT LCD with resistive touch. It uses the ST7789S IC and XPT2046 resistive touch IC. It has SPI interface and three configurable user keys.Here is its wiki page Matrix - 2'8 SPI Key TFT

8 3D Printing Files for Housing

frameless

download link

9 Resources

9.1 Datasheet & Schematic

• Schematic
  • NanoPi-NEO-Core2-1707-Schematic.pdf
• Dimensional diagram
  • NanoPi-NEO-Core2-1707 pcb in dxf format
• H5 datasheet Allwinner_H5_Datasheet_V1.0.pdf

10 Update Log

10.1 Dec-1-2017

• Released English version