Template:FriendlyCoreGeneral/zh

1 Work with FriendlyCore

1.1 Introduction

FriendlyCore is a light Linux system without X-windows, based on ubuntu core, It uses the Qt-Embedded's GUI and is popular in industrial and enterprise applications.

Besides the regular Ubuntu core's features our FriendlyCore has the following additional features:

• it supports our LCDs with both capacitive touch and resistive touch(S700, X710, HD702, S430, HD101 and S70)
• it supports WiFi
• it supports Ethernet
• it supports Bluetooth and has been installed with bluez utilities
• it supports audio playing
• it supports Qt5.9 EGLES and OpenGL ES1.1/2.0 (Only for S5P4418/S5P6818)

1.2 FriendlyCore's User Accounts

• If your board is connected to an HDMI monitor you need to use a USB mouse and keyboard.
• 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.Here is a setup where we connect a board to a PC via the PSU-ONECOM and you can power on your board from either the PSU-ONECOM or its MicroUSB:

You can use a USB to Serial conversion board too.
Make sure you use a 5V/2A power to power your board from its MicroUSB port:

• FriendlyCore 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

1.3 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 and etc. Type the following command to run this utility.

$ sudo npi-config

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

1.4 扩展TF卡文件系统

第一次启动FriendlyCore系统时，系统会自动扩展文件系统分区，请耐心等待，TF卡/eMMC的容量越大，需要等待的时间越长，进入系统后执行下列命令查看文件系统分区大小：

df -h

1.5 连接WiFi

FriendlyCore 使用 NetworkManager 工具来管理网络，其在命令行下对应的命令是 nmcli，要连接WiFi，相关的命令如下：

• 查看网络设备列表

$ sudo nmcli dev

注意，如果列出的设备状态是 unmanaged 的，说明网络设备不受NetworkManager管理，你需要清空 /etc/network/interfaces下的网络设置,然后重启.

• 开启WiFi

$ sudo nmcli r wifi on

• 扫描附近的 WiFi 热点

$ sudo nmcli dev wifi

• 连接到指定的 WiFi 热点

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

请将 SSID和 PASSWORD 替换成实际的 WiFi名称和密码。
连接成功后，下次开机，WiFi 也会自动连接。

更详细的NetworkManager使用指南可参考这篇文章： Use NetworkManager to configure network settings

• 使用USB WiFi

系统已经支持市面上众多常见的USB WiFi，已测试过的USB WiFi型号如下：

序号	型号
1	RTL8188CUS/8188EU 802.11n WLAN Adapter
2	RT2070 Wireless Adapter
3	RT2870/RT3070 Wireless Adapter
4	RTL8192CU Wireless Adapter
5	小米WiFi mt7601

1.6 连接以太网

默认插上网线开机，会自动连接并通过DHCP获取IP地址，如需要配置静态IP地址，请参考 NetworkManager 的相关文档: Use NetworkManager to configure network settings。

1.7 使用蓝牙

如果你的开发板板载有蓝牙模块，可输入以下命令搜索周边的蓝牙设备：

hcitool scan

使用hciconfig命令来了解接口的状态。

1.8 播放音频

在串口终端执行以下aplay命令播放一段音频：

aplay -t raw -c 2 -f S16_LE -r 44100 /root/test.pcm

1.9 HDMI输出声音

系统默认从3.5mm耳机座输出声音，想从HDMI输出需要修改文件系统上的配置文件/etc/asound.conf如下：

pcm.!default {
    type hw
    card 1
    device 0
}
 
ctl.!default {
    type hw
    card 1
}

card 0代表3.5mm耳机孔，card 1代表HDMI音频。设置完成后需要重启系统才能生效。

1.10 连接USB摄像头模块(FA-CAM202)

FA-CAM202是一款200万像素的USB摄像头模块。
连接测试USB摄像头的方法请参考：连接DVP摄像头模块(CAM500B)

1.11 开发自已的Qt应用

请参考 How to build Qt application

1.12 开机自动运行Qt示例程序

使用npi-config工具进行开启：

sudo npi-config

进入Boot Options -> Autologin -> Qt/Embedded，选择Enable然后重启即可。