[Raspberry Pi] 라즈베리파이 WiFi IP 고정으로 사용하기

라즈베리파이에서 WiFi 통신 연결이 가능하다.

 

아래 경로를 통해 vi 에디터 접속

sudo vi /etc/wpa_supplicant/wpa_supplicant.confp

 

공유기 or 스마트폰 핫스팟 등 ssid 와 password 정보를 아래와 같이 적는다.

ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev
update_config=1
country=GB

network={
        ssid="devk"
        psk="********"
        key_mgmt=WPA-PSK
}

 

WiFi 연결 유무를 확인하기 위해 아래 명령어를 진행한다.

ifconfig

 

아래와 같이 wlan0 확인 가능

lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
        inet 127.0.0.1  netmask 255.0.0.0
        inet6 ::1  prefixlen 128  scopeid 0x10<host>
        loop  txqueuelen 1000  (Local Loopback)
        RX packets 4  bytes 236 (236.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 4  bytes 236 (236.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

wlan0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.43.43  netmask 255.255.255.0  broadcast 192.168.43.255
        inet6 fe80::dea6:32ff:fe9e:3abc  prefixlen 64  scopeid 0x20<link>
        inet6 2001:2d8:e994:2db3:dea6:32ff:fe9e:3abc  prefixlen 64  scopeid 0x0<global>
        ether dc:a6:32:9e:3a:bc  txqueuelen 1000  (Ethernet)
        RX packets 662  bytes 49639 (48.4 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 627  bytes 113201 (110.5 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

 

아래 명령어를 통해 script 진입 후 아래 정보를 입력한다. 그리고 재부팅을 진행

sudo vi /etc/network/interfaces

# interfaces(5) file used by ifup(8) and ifdown(8)

# Please note that this file is written to be used with dhcpcd
# For static IP, consult /etc/dhcpcd.conf and 'man dhcpcd.conf'

# Include files from /etc/network/interfaces.d:
source-directory /etc/network/interfaces.d

auto lo
iface lo inet loopback

iface eth0 inet manual

allow-hotplug wlan0
iface wlan0 inet static
        wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf
        address 192.168.43.43
        netmask 255.255.255.0
        gateway 192.168.43.1
        network 192.168.43.0
        broadcast 192.168.43.255