NanoPi 2

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1 Introduction

Overview

Front

Back

The NanoPi2 is a high performance ARM Board developed by FriendlyARM for Hobbysts, Makers and Hackers for IOT projects. It features Samsung’s Cortex-A9 Quad Core S5P4418@1.4GHz SoC and 1G 32bit DDR3 RAM. It has built-in WiFi and Bluetooth which supports 802.11 b/g/n and Bluetooth 4.0. It boots Android and Debian from a TF card. It integrates an HDMI and LCD interface. Its adoption of the Raspberry Pi’s GPIO pin header makes it compatible with both Raspberry Pi’s external GPIO modules and Arduino’s shield boards. Its PCB dimension is 75 x 40 mm.

2 Features

CPU: S5P4418, 1.4GHz
RAM: 1GB DDR3
Built in SDIO WiFi and Bluetooth module
USB 2.0 Type A x 1
Debug Serial Port/UART0 x 1
microSD Slot x 2
microUSB x 1: for data transmission and power input
LCD Interface: 0.5 mm pitch SMT FPC seat, for full-color LCD (RGB: 8-8-8)
HDMI: HDMI 1.4A, Type-A, 1080P60
DVP Camera Interface: 0.5mm spacing FPC socket. It includes ITU-R BT 601/656 8-bit, I2C and IO
GPIO: 2.54mm spacing 40pin, compatible with Raspberry Pi's GPIO. It includes UART, SPI, I2C, IO etc
Button: User Button x 1, Reset Button x 1
LED: LED for Power Indication x 1, User LED x 1
PCB Dimension: 75 x 40mm
Power: DC 5V/2A
OS: Android, Debian

3 Diagram, Layout and Dimension

3.1 Layout

NanoPi 2接口布局

NanoPi 2 MicroSD

GPIO Pin Spec

Pin#	Name	Pin#	Name
1	VDD_SYS_3.3V	2	VDD_5V
3	I2C0_SDA	4	VDD_5V
5	I2C0_SCL	6	DGND
7	GPIOB28	8	UART3_TXD
9	DGND	10	UART3_RXD
11	GPIOB29	12	GPIOB26
13	GPIOB30	14	DGND
15	GPIOB31	16	PWM2
17	VDD_SYS_3.3V	18	GPIOB27
19	SPI0_MOSI	20	DGND
21	SPI0_MISO	22	PWM0
23	SPI0_CLK	24	SPI0_CS
25	DGND	26	PWM1
27	I2C1_SDA	28	I2C1_SCL
29	GPIOC8	30	DGND
31	SPI2_CLK	32	GPIOC28
33	SPI2_CS	34	DGND
35	SPI2_MOSI	36	GPIOC7
37	SPI2_MISO	38	ALIVEGPIO2
39	DGND	40	ALIVEGPIO3

Debug Port CON1（UART0）

Pin#	Name
1	DGND
2	VDD_5V
3	TXD0
4	RXD0

DVP Camera Interface Pin Spec

Pin#	Name
1, 2	VDD_SYS_3.3V
7,9,13,15,24	DGND
3	SCL0
4	SDA0
5	GPIOB14
6	GPIOB16
8,10	NC
11	VSYNC
12	HREF
14	PCLK
16-23	Data bit7-0

RGB LCD Interface Pin Spec

Pin#	Name
1, 2	VDD_5V
11，20，29, 37，38，39，40, 45	DGND
3-10	Blue LSB to MSB
12-19	Green LSB to MSB
21-28	Red LSB to MSB
30	GPIOB25
31	GPIOC15
32	XnRSTOUT Form CPU
33	VDEN
34	VSYNC
35	HSYNC
36	LCDCLK
41	SCL2
42	SDA2
43	GPIOC16
44	NC

Note

VDD_SYS_3.3V: 3.3V power output
VDD_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
For more details please refer to the document：NanoPi-2-1507-Schematic.pdf

3.2 Board Dimension

For more details please refer to the document:NanoPi-2-1507-Dimesions(dxf).zip

4 Get Started

4.1 Essentials You Need

Before play with your NanoPi2 please get the following items ready

NanoPi 2
microSD Card/TFCard: Class 10 or Above, minimum 8GB SDHC
microUSB cable
A Host running Ubuntu 14.04 64 bit system

4.2 Make an Installation MicroSD Card

1) Insert your microSD card to your host running Ubuntu and check your SD card's device name

dmesg | tail

Search the messages output by "dmesg" for similar words like "sdc: sdc1 sdc2". If you can find them it means your SD card is recognized as "/dev/sdc". Or you can check that by commanding "cat /proc/partitions".

2) Download Firmware Package

git clone https://github.com/friendlyarm/sd-fuse_nanopi2.git
cd sd-fuse_nanopi2

3) Flash Android Firmware to MicroSD Card

su
./fusing.sh /dev/sdx

(Note: you need to replace "/dev/sdx" with the device name in your system) When you do “git clone” you have to hit “Y” within 10 seconds after it prompts you to download image files otherwise you will miss the download.

4) Flash Debian Firmware to MicroSD Card

./fusing.sh /dev/sdx debian

4.3 Update Image Files in MicroSD Card From PC Host

If you want to make some changes to the image files in your MicroSD card please follow steps below otherwise you can skip this section.
Please insert your MicroSD card to a PC host running LINUX, mount the boot and rootfs sections of the SD card and follow the steps below:
1) If you want to output your Debian to an LCD you need to change the uImage in the boot section. If the boot section is mounted on "/media/boot" please run these commands:

cd /media/boot
rm uImage
ln -s uImage.lcd uImage

Note: if the image file is for Android you don't need to make these changes because the default output is LCD.

2) If you want to change the Kernel Command Line you can use the "fw_setenv" utility to do it, which is under "sd-fuse_nanopi2/tools". For instance if your LCD is HD101 you can do it this way:
Check the current Command Line：

cd sd-fuse_nanopi2/tools
./fw_printenv /dev/sdc | grep bootargs

Append "lcd=HD101" and then do "fw_setenv" to reset the command line:

./fw_setenv /dev/sdc bootargs XXX lcd=HD101

Attention: The "XXX" should be repalced with original bootargs.

4.4 Run Android

Insert a MicroSD card with Android image files to your NanoPi2, connect the NanoPi2 to an HDMI monitor and a 5V/2A power source the NanoPi2 will be automatically powered on. If you can see the blue LED flashing it means your board is working and you will see Android loading on the HDMI monitor. If at the same time you connect your NanoPi2 to a PC running Ubuntu and Minicom via a serial cable you will see system messages output to the PC’s minicom terminal.

5 Play with Debian

5.1 Wireless Connection

After Debian is fully loaded please click on the network icon on top right of the GUI it will automatically search for nearby WiFi sources. Select one source from the list, click on its "Properties", type its password, save, close and then "Connect". If everything is fine your NanoPi2 will be able to connect to a WiFi source

5.2 Setup Wi-Fi AP

You can follow the steps below to setup Wi-Fi AP:

turn-wifi-into-apmode yes

Please reboot the system as prompted. By default the AP's name is "nanopi2-wifiap" and the password is 123456789.

Now you are able to find the "nanopi2-wifiap" from a PC host and connect to it. If a connection is a success you will be able to SSH to this NanoPi2 at "192.168.8.1":

ssh root@192.168.8.1

The password for it is "fa".

You can check the WiFi mode via the following command:

cat /sys/module/bcmdhd/parameters/op_mode

If the result is "2" it means it is currently working as a WiFi AP.If you want to switch back to the Station mode you can do it this way:

turn-wifi-into-apmode no

5.3 Bluetooth

Click on the bluetooth icon on top right of the GUI a menu will pop up:
Make discoverable enables the NanoPi2 to be searched for by other bluetooth devices;
Devices... opens a search window and searches for nearby bluetooth devices(Note: the "Make discoverable" property needs to be enabled on those nearby devices):
Send Files to Device...enables the NanoPi2 to send files to another bluetooth device which is a pair of the NanoPi2.

5.4 安装Debian软件包

我们提供的是标准的Debian jessie系统，你可以使用apt-get等命令来安装软件包，如果板子是首次运行，需要先用以下命令更新软件包列表：

apt-get update

然后就可以安装软件包了，例如要安装ftp服务器，使用以下命令：

apt-get install vsftpd

如果软件包下载速度不理想，你可以编辑 /etc/apt/sources.list 更换一个更快的源服务器，这个网址[1]有一份完整的源镜像服务器列表，注意要选用一个带armhf架构的。

6 Make Your Own OS Image

6.1 Setup Development Environment

6.2 Install Cross Compiler

FriendlyARM has an open source Android package which contains a working cross compiler. You can set it up in the "PATH" variable:

export PATH=/opt/FriendlyARM/s5p4418/android/prebuilts/gcc/linux-x86/arm/arm-eabi-4.6/bin:$PATH
arm-eabi-gcc -v

The “/opt/FriendlyARM/s5p4418/android” is where Android source code package is located.
When you use this compiler please specify the option "CROSS_COMPILE=arm-eabi-".

6.3 Compile U-Boot

Download the U-Boot source code and compile it. Please note the github's branch is s5p4418-nanopi2:

git clone https://github.com/friendlyarm/uboot_nanopi2.git
cd uboot_nanopi2
git checkout s5p4418-nanopi2
make s5p4418_nanopi2_config
make CROSS_COMPILE=arm-eabi-

After your compilation succeeds a u-boot.bin will be generated. If you want to test it please flash it to your installation MicroSD card via fastboot.
Warning: you cannot update this MicroSD card by commanding "dd". This command which will cause trouble when booting the NanoPi2.

6.4 Prepare mkimage

You need the mkimage utility to compile a U-Boot source code package. Please make sure this utility works well on your host before you start compiling a uImage.
You can install this utility by either commanding "sudo apt-get install u-boot-tools" or following the commands below:

cd uboot_nanopi2
make tools
mkdir -p /usr/local/sbin && cp -v tools/mkimage /usr/local/sbin

6.5 Compile Linux kernel

6.5.1 Compile Kernel

Download Kernel Source Code

git clone https://github.com/friendlyarm/linux-3.4.y.git
cd linux-3.4.y
git checkout s5p4418-nanopi2

The NanoPi2's kernel source code lies in the "s5p4418-nanopi2" branch.

Compile Android Kernel

make nanopi2_android_defconfig
touch .scmversion
make CROSS_COMPILE=arm-eabi- uImage

Compile Debian Kernel

make nanopi2_linux_defconfig
touch .scmversion
make CROSS_COMPILE=arm-eabi- uImage

After your compilation succeeds a uImage will be generated in the "arch/arm/boot/" directory.

6.5.2 Compile Kernel Modules

Android contains kernel modules which are in the "/lib/modules" directory in the system section. If you want to add your own modules to the kernel or you changed your kernel configurations you need to recompile these new modules.
Compile Original Kernel Modules:

cd linux-3.4.y
make CROSS_COMPILE=arm-eabi- modules

Here we have two new modules and we can compile them by following the commands below:

cd /opt/FriendlyARM/s5p4418/android
./vendor/friendly-arm/build/common/build-modules.sh

The "/opt/FriendlyARM/s5p4418/android" directory points to the top directory of Android source code. You can get more details by specifying option "-h".
After your compilation succeeds new modules will be generated

6.6 Compile Android

Install Cross Compiler

We recommend installing 64 bit Ubuntu 14.04 on your PC host.

sudo apt-get install zlib1g-dev:i386
sudo apt-get install bison g++-multilib git gperf libxml2-utils make python-networkx zip
sudo apt-get install flex libncurses5-dev zlib1g-dev gawk minicom

For more details please refer to https://source.android.com/source/initializing.html 。

Download Source Code

You need to use repo to get the Android source code. Please refer to https://source.android.com/source/downloading.html 。

mkdir android && cd android
repo init -u git@github.com:friendlyarm/android_manifest.git -b nanopi2-kitkat
repo sync

The "android" directory is the working directory. To initialize repo you can do "HTTPS clone URL".

Compile System Package

source build/envsetup.sh
lunch aosp_nanopi2-userdebug
make -j8

After your compilation succeeds an image will be generated in the "out/target/product/nanopi2/" directory.

7 Resources

[Schematic]( NanoPi-2-1507-Schematic.pdf)
[Dimensions]( NanoPi-2-1507-Dimesions(dxf).zip )
[S5P4418 User Manual]( S5P4418_Users_Manual_Preliminary_Ver.0.10.pdf )
[AP6212 Datasheet]( AP6212_V1.1_09022014.pdf )

NanoPi 2

Contents

1 Introduction

2 Features

3 Diagram, Layout and Dimension

3.1 Layout

3.2 Board Dimension

4 Get Started

4.1 Essentials You Need

4.2 Make an Installation MicroSD Card

4.3 Update Image Files in MicroSD Card From PC Host

4.4 Run Android

5 Play with Debian

5.1 Wireless Connection

5.2 Setup Wi-Fi AP

5.3 Bluetooth

5.4 安装Debian软件包

6 Make Your Own OS Image

6.1 Setup Development Environment

6.2 Install Cross Compiler

6.3 Compile U-Boot

6.4 Prepare mkimage

6.5 Compile Linux kernel

6.5.1 Compile Kernel

6.5.2 Compile Kernel Modules

6.6 Compile Android

7 Resources

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