树莓派 LED含义 扩展口定义 静态IP

1，板上有5个led分别代表什么意思呢

Normal LED status

There are five LEDS near the USB connector.
LED statuses

LED	colour	function	normal status
ACT	green	card status	flashing during SD card activity   灯闪烁SD卡可用否则sd卡或卡上的系统不可用
PWR	red	power	steady ON when PI receives some power上电
FDX	orange	full duplex	on when Ethernet connection is full duplex全双工网卡时亮
LNK	orange	link	on when Ethernet is connected网络连接上亮
100	orange	100 Mbps	on when connection is 100 Mbps off when 10 Mbps亮：100M网卡 灭 10M网卡

2，根据led的闪烁状态判断故障
详细讲解http://elinux.org/R-Pi_Troubleshooting#Red_power_LED_is_on.2C_green_LED_does_not_flash.2C_nothing_on_display

3，引出的GPIO引脚含义

更详细的介绍

http://www.raspberrypi-spy.co.uk/2012/06/simple-guide-to-the-rpi-gpio-header-and-pins/







4，树莓派配置静态IP

http://www.slblabs.com/2012/08/16/rpi-ssh-ip/


http://elinux.org/Configuring_a_Static_IP_address_on_your_Raspberry_Pi

http://www.raspberrypi.org/phpBB3/viewtopic.php?f=26&t=31003

其实就是和linux下配置IP是一样的

ip配置方法是编辑sudo nano  /etc/network/interfaces

树莓派默认配置

auto lo

iface lo inet loopback

iface eth0 inet dhcp

allow-hotplug wlan0

iface wlan0 inet manual

wpa-roam /etc/wpa_supplicant/wpa_supplicant.conf

iface default inet dhcp

修改为静态ip的方法

1，老外的方法

sudo vi /etc/network/interfaces

To change to static IP address

cd /etc/networks

sudo nano interfaces

replace the line “iface eth0 inet dhcp” with

iface eth0 inet static

address 192.168.1.4

netmask 255.255.255.0

gateway 192.168.1.1

You should also take a look at the file /etc/resolv.conf

and check it has a nameserver entry (probably pointing at your default gateway) or direct to your ISP name servers.

nameserver 192.168.1.1

2.国内帖子

有些朋友一直在问如果配置网络，就简单写写吧，希望能帮助到大家
http://bbs.shumeipai.org/thread-158-1-1.html

1.配置ip地址

编辑sudo nano  /etc/network/interfaces

自动获取ip的配置：
auto eth0  
allow-hotplug eth0    
iface eth0 inet dhcp

手动配置ip：
auto eth0   
iface eth0 inet static        
address 192.168.1.7       
netmask 255.255.255.0        
gateway 192.168.0.254

2.配置DNS

编辑 sudo nano /etc/resolv.conf

domain lan

search lan

nameserver 192.168.1.1

nameserver 192.168.99.100

注：nameserver 后面的ip就是dns服务器，根据自己的运营商情况填吧

5，电脑与树莓派网线直连

http://www.raspberrypi.org/phpBB3/viewtopic.php?f=28&t=22716

方案1：

on your pc

address 192.168.1.100

netmask 255.255.255.0

gateway 192.168.1.100

on your pi
/etc/network/interface

address 192.168.1.5

netmask 255.255.255.0

gateway 192.168.1.100

方案2：

Rpi

ip 172.16.1.1

mask 255.255.255.0

gateway 172.16.1.2  //172.16.1.1 works too

ubuntu

ip 172.16.1.21

sub 255.255.255.0

gateway 172.16.1.1 //172.16.1.10 works too

方案3：

That worked too.

Don't set the devices to be gateway for each other. All you need is something like this:

IP address of PC: 192.168.1.1

IP address of Rasperberry Pi: 192.168.1.2

Subnet mask on both: 255.255.255.0

Default gateway on both: 192.168.1.254