메뉴 건너뛰기

검색창 닫기

XEDITION

아두이노

와이파이 모듈(ESP8266) 공유기 연결 AT 명령어

묵묵이 2017.02.26 14:27 조회 수 : 6

 

 

ESP8266Frimware_Update_bb.jpg

 

 

Arduino  /   ESP8266

Tx  ------- Rx
Rx  ------- Tx
3.3V ------ CH_PD & 3.3V (VCC)


// 시리얼모니터를 열어 Baud Rate를 9600으로 설정하고
// 표시방식을 'Both NL & CR'로 설정한다.

 

//리셋 명령어 ..

AT+RST

 

//모드의 변경
//'  --->  Station Mode
AT+CWMODE=1

 

//목록 조회..

AT+CWLAP


//연결 명령어
AT+CWJAP="x700_2g","54126166"

 

// IP 확인
AT+CIFSR

 

// 접속 ..

AT+CIPSTART="1","192.168.0.10","7070"

//Start a TCP connection
AT+CIPSTART="UDP","192.168.0.10","7070"

 

// conn

AT+CIPSEND=100;

 

GET /iot/send_home.jsp?api_key=

 

//종료

AT+CIPCLOSE

 

 

 

ESP8266 - AT Command Reference

26 Mar 2015 | by fuho

ESP8266, in it’s default configuration, boots up into the serial modem mode. In this mode you can communicate with it using a set of AT commands. I will present to you a reference of all known AT commands that ESP8266 supports, explain what they do and how to use them.

Historically AT commands are based on the Hayes Command Set and these are no different.

AT Commands

Index of all known AT commands

Basic WiFI layer TCPIP Layer
AT AT+CWMODE AT+CIPSTATUS
AT+RST AT+CWJAP AT+CIPSTART
AT+GMR AT+CWLAP AT+CIPSEND
AT+GSLP AT+CWQAP AT+CIPCLOSE
ATE AT+CWSAP AT+CIFSR
  AT+CWLIF AT+CIPMUX
  AT+CWDHCP AT+CIPSERVER
  AT+CIPSTAMAC AT+CIPMODE
  AT+CIPAPMAC AT+CIPSTO
  AT+CIPSTA AT+CIUPDATE
  AT+CIPAP +IPD

Line termination

ESP8266 expects <CR><LF> or CarriageReturn and LineFeed at the end of each command, but just<CR> seems to work too.

Command variants

Each command can have up to 4 variants changing the function of it. You can chose between them by appending one of four possible values to the end of the root command itself. These four appendices can have the following values "",=<parameter|[parameters]>,"?",=?

Type Example Description
Test AT+CIPSTART=? Query the range of values (So far only AT+CWMODE=? uses it)
Query AT+CMD? Returns the current value of the parameter.
Set AT+CMD=Parameter Set the value of user-defined parameters in commands and run.
Execute AT+CMD Runs commands with no user-defined parameters.
Note:
  • Not all AT commands support all 4 variants.
  • [] = default value, not required or may not appear.
  • String values require double quotation marks, for example: AT+CWSAP="ESP756190","21030826",1,4.
  • Baud rate = 115200
  • AT instruction ends with “rn”

Commands

AT - Test AT startup

Variant Command Response Function
Execute AT OK Test if AT system works correctly

Back to Index

AT+RST - Restart module

Variant Command Response Function
Execute AT+RST OK Reset the module

ESP-01 Output after reset:

 ets Jan  8 2013,rst cause:4, boot mode:(3,7)

wdt reset
load 0x40100000, len 24444, room 16
tail 12
chksum 0xe0
ho 0 tail 12 room 4
load 0x3ffe8000, len 3168, room 12
tail 4
chksum 0x93
load 0x3ffe8c60, len 4956, room 4
tail 8
chksum 0xbd
csum 0xbd

ready

ESP-12 Output after reset:

x04B1x85 xffx13:'xe0;xcc;!Gxfax11xa9Rxc6x83x01xd9x81
[Vendor:www.ai-thinker.com Version:0.9.2.4]

ready

Back to Index

AT+GMR - View version info

Variant Command Response Function
Execute AT+GMR version, OK Print firmware version
Parameters:
  • version: firmware version number
ESP-01 output:
00160901
ESP-12 output:
0018000902-AI03

Back to Index

AT+GSLP - Enter deep-sleep mode

Variant Command Response Function
set AT+GSLP=time time OK Enter deep sleep mode for time milliseconds
parameters:
  • time: Time to sleep in milliseconds
Example：

AT+GSLP=1500

Note:

Hardware has to support deep-sleep wake up (Reset pin has to be High).

Back to Index

ATE - Enable / Disable echo

Variant Command Response Function
Execute ATE0 OK Disable echo (Doesn’t send back received command)
Execute ATE1 OK Enable echo (Sends back received command before response)
Note:

I haven’t had any luck with this command yet. Both ATE0 and ATE1 return no this fun.
ATE returns OK
This changed with ESP-12 where the command functions exactly as expected!

Back to Index

AT+CWMODE - WIFI mode（station, AP, station + AP）

Variant Command Response Function
Test AT+CWMODE=? +CWMODE:(1-3) OK List valid modes
Query AT+CWMODE? +CWMODE:mode OK Query AP’s info which is connect by ESP8266.
Execute AT+CWMODE=mode OK Set AP’s info which will be connect by ESP8266.
Parameters:
  • mode： An integer designating the mode of operation either 1, 2, or 3.
    1 = Station mode (client)
    2 = AP mode (host)
    3 = AP + Station mode (Yes, ESP8266 has a dual mode!)
Notes:

ESP-12 came configured as host with ssid set to ESP_A0A3F2, no password, channel 1 You can use AT+CWSAP? to find the current settings.

Back to Index

AT+CWJAP - Connect to AP

Variant Command Response Function
Query AT+CWJAP? + CWJAP:ssid OK Prints the SSID of Access Point ESP8266 is connected to.
Execute AT+CWJAP=ssid,pwd OK Commands ESP8266 to connect a SSID with supplied password.
Parameters:
  • ssid：String, AP’s SSID
  • pwd：String, not longer than 64 characters
Example：
AT+CWJAP="my-test-wifi","1234test"
Example AT+CWJAP?：
+CWJAP:"my-test-wifi"

Back to Index

AT+CWLAP - Lists available APs

Variant Command Response Function
Set AT+CWLAP=ssid,mac,ch +CWLAP:ecn,ssid,rssi,mac OK Search available APs with specific conditions.
Execute AT+CWLAP AT+CWLAP:ecn,ssid,rssi,mac OK Lists available Access Points.
Parameters:
  • ecn:
    • 0 = OPEN
    • 1 = WEP
    • 2 = WPA_PSK
    • 3 = WPA2_PSK
    • 4 = WPA_WPA2_PSK
  • ssid: String, SSID of AP
  • rssi: signal strength
  • mac: String, MAC address
Note:

On ESP-01 I have had no luck with the set version of this command (AT+CWLAP=...). If you know what it does please let me know.
On ESP-12, the Set version of the command allows to see if a certain SSID, with certain MAC on certain channel exists. If it doesit is returned as one line of the Execute version of this command.

Example AT+CWLAP:
+CWLAP:(3,"CVBJB",-71,"f8:e4:fb:5b:a9:5a",1)
+CWLAP:(3,"HT_00d02d638ac3",-90,"04:f0:21:0f:1f:61",1)
+CWLAP:(3,"CLDRM",-69,"22:c9:d0:1a:f6:54",1)
+CWLAP:(2,"AllSaints",-88,"c4:01:7c:3b:08:48",1)
+CWLAP:(0,"AllSaints-Guest",-83,"c4:01:7c:7b:08:48",1)
+CWLAP:(0,"AllSaints-Guest",-83,"c4:01:7c:7b:05:08",6)
+CWLAP:(4,"C7FU24",-27,"e8:94:f6:90:f9:d7",6)
+CWLAP:(2,"AllSaints",-82,"c4:01:7c:3b:05:08",6)
+CWLAP:(3,"QGJTL",-87,"f8:e4:fb:b5:6b:b4",6)
+CWLAP:(4,"50EFA8",-78,"74:44:01:50:ef:a7",6)
+CWLAP:(0,"optimumwifi",-78,"76:44:01:50:ef:a8",6)
+CWLAP:(3,"BHQH4",-95,"18:1b:eb:1a:af:5b",6)
+CWLAP:(3,"NETGEAR49",-86,"84:1b:5e:e0:28:03",7)
+CWLAP:(3,"ngHub_319332NW00047",-56,"20:e5:2a:79:b1:2f",11)
+CWLAP:(3,"BFZR4",-73,"18:1b:eb:1d:c3:91",11)
+CWLAP:(1,"5FFVL",-82,"00:26:b8:b5:c0:f2",11)
+CWLAP:(3,"59G6D",-77,"00:7f:28:6d:91:7b",11)
+CWLAP:(3,"N16FU",-53,"20:cf:30:ce:60:fe",11)
+CWLAP:(3,"ITS",-82,"90:72:40:21:5f:76",11)
+CWLAP:(3,"ITS",-79,"24:a2:e1:f0:04:e4",11)
Example AT+CWLAP="N16FU","20:cf:30:ce:60:fe",11:
+CWLAP:(3,"N16FU",-53,"20:cf:30:ce:60:fe",11)

Back to Index

AT+CWQAP - Disconnect from AP

Variant Command Response Function
Execute AT+CWQAP OK Disconnect ESP8266 from the AP is currently connected to.
Note:

After running this command, if you run AT+CWJAP? it still shows the AP you were connected to before. Back to Index

AT+CWSAP - Configuration of softAP mode

Variant Command Response Function
Query AT+CWSAP? +CWSAP:ssid,pwd,ch,ecn OK Query configuration of ESP8266 softAP mode.
Set AT+CWSAP=ssid,pwd,ch,ecn OK Set configuration of softAP mode.
Parameters:
  • ssid: String, ESP8266’s softAP SSID
  • pwd: String, Password, no longer than 64 characters
  • ch: channel id
  • ecn:
    • 0 = OPEN
    • 2 = WPA_PSK
    • 3 = WPA2_PSK
    • 4 = WPA_WPA2_PSK

Example
AT+CWSAP="esp_123","1234test",5,3
AT+CWSAP? => +CWSAP:"esp_123","1234test",5,3

Back to Index

AT+CWLIF - List clients connected to ESP8266 softAP

Variant Command Response Function
Execute AT+CWLIF [ip,other] OK List information on of connected clients.
Parameters:

ip: IP address of a client connected to the ESP8266 softAP other: Other info, look at example. I don’t know what it means yet.

Example (ESP-01):
AT+CWLIF

192.168.4.100,3fff50b4:3fff50ba:3fff50c0:3fff50c6:3fff50cc:3fff50d2

OK
Example (ESP-12):
AT+CWLIF

192.168.4.100,c0:ee:fb:25:33:ec

OK

I ran the command after connecting to the ESP8266 with my cellphone.

Back to Index

AT+CWDHCP - Enable/Disable DHCP

Variant Command Response Function
Set AT+CWDHCP=mode,en OK Enable or disable DHCP for selected mode
Parameters:
  • mode:
    • 0 : set ESP8266 as a softAP
    • 1 : set ESP8266 as a station
    • 2 : set both ESP8266 to both softAP and a station
  • en:
    • 0 : Enable DHCP
    • 1 : Disable DHCP
Note:

This command doesn’t seem to work on firmware 00160901 (ESP-01) nor 0018000902-AI03 (ESP-12).

Back to Index

AT+CIPSTAMAC - Set MAC address of ESP8266 station

Variant Command Response Function
Query AT+CIPSTAMAC? +CIPSTAMAC:mac OK Print current MAC ESP8266’s address.
Execute AT+CIPSTAMAC=mac OK Set ESP8266’s MAC address.
Parameters:
  • mac： String, MAC address of the ESP8266 station.
Example:

AT+CIPSTAMAC="18:aa:35:97:d4:7b"

Note:

This command doesn’t seem to work on firmware 00160901

Back to Index

AT+CIPAPMAC - Set MAC address of ESP8266 softAP

Variant Command Response Function
Query AT+CIPAPMAC? +CIPAPMAC:mac OK Get MAC address of ESP8266 softAP.
Execute AT+CIPAPMAC=mac OK Set mac of ESP8266 softAP.
Parameters:
  • mac： String, MAC address of the ESP8266 softAP.
Example:

AT+CIPAPMAC=”2c:aa:35:97:d4:7b”

Note:

This command doesn’t seem to work on firmware 00160901

Back to Index

AT+CIPSTA - Set IP address of ESP8266 station

Variant Command Response Function
Query AT+CIPSTA? +CIPSTA:ip OK Get IP address of ESP8266 station.
Execute AT+CIPSTA=ip OK Set ip addr of ESP8266 station.
Parameters:
  • ip： String, ip address of the ESP8266 station.
Example:

AT+CIPSTA=”192.168.101.108”

Note:

This command doesn’t seem to work on firmware 00160901

Back to Index

AT+CIPAP - Set ip address of ESP8266 softAP

Variant Command Response Function
Query AT+CIPAP? +CIPAP:ip OK Get ip address of ESP8266 softAP.
Execute AT+CIPAP=ip OK Set ip addr of ESP8266 softAP.
Parameters:
  • ip： String, ip address of ESP8266 softAP.
Example:
AT+CIPAP="192.168.5.1"
Note:

This command doesn’t seem to work on firmware 00160901

Back to Index

AT+CIPSTATUS - Information about connection

Variant Command Response Function
Test AT+CIPSTATUS=? OK  
Execute AT+CIPSTATUS STATUS:status +CIPSTATUS:id,type,addr,port,tetype OK Get information about connection.
Parameters:
  • status：
    • 2: Got IP
    • 3: Connected
    • 4: Disconnected
  • id： id of the connection (0~4), for multi-connect
  • type： String, “TCP” or “UDP”
  • addr： String, IP address.
  • port： port number
  • tetype：
    • 0 = ESP8266 runs as a client
    • 1 = ESP8266 runs as a server
Note:

On ESP-01 this command returns STATUS:1 instead (no extra info, but status changes) On 0018000902-AI03 this command returns STATUS:2 instead (no extra info, but status changes)

Back to Index

AT+CIPSTART - Establish TCP connection or register UDP port and start a connection

Variant Command Response Function
Set AT+CIPSTART=type,addr,port OK Start a connection as client. (Single connection mode)
Set AT+CIPSTART=id,type,addr,port OK Start a connection as client. (Multiple connection mode)
Test AT+CIPSTART=? [+CIPSTART:(id)(“type”),(“ip address”),(port)] OK List possible command variations)
Parameters:
  • id: 0-4, id of connection
  • type: String, “TCP” or “UDP”
  • addr: String, remote IP
  • port: String, remote port

Back to Index

AT+CIPSEND - Send data

Variant Command Response Function
Test AT+CIPSEND=? OK  
Set AT+CIPSEND=length SEND OK Set length of the data that will be sent. For normal send (single connection).
Set AT+CIPSEND=id,length SEND OK Set length of the data that will be sent. For normal send (multiple connection).
Execute AT+CIPSEND   Send data. For unvarnished transmission mode.

Normal Mode

Parameters:
  • id: ID no. of transmit connection
  • length: data length, MAX 2048 bytes

Unvarnished Transmission Mode

Wrap return “>” after execute command. Enters unvarnished transmission, 20ms interval between each packet, maximum 2048 bytes per packet. When single packet containing “+++” is received, it returns to command mode.

Back to Index

AT+CIPCLOSE - Close TCP or UDP connection

Variant Command Response Function
Test AT+CIPCLOSE=? OK  
Set AT+CIPCLOSE=id OK Close TCP or UDP connection.For multiply connection mode
Execute AT+CIPCLOSE OK Close TCP or UDP connection.For single connection mode
Parameters:
  • id： ID no. of connection to close, when id=5, all connections will be closed.
Note:

In server mode, id = 5 has no effect!

Back to Index

AT+CIFSR - Get local IP address

Variant Command Response Function
Test AT+CIFSR=? OK  
Execute AT+CIFSR +CIFSR:ip OK Get local IP address.
Parameters:
  • ip: IP address of the ESP8266 as an client.
Example AT+CIFSR:
10.101.10.134

Back to Index

AT+CIPMUX - Enable multiple connections or not

Variant Command Response Function
Set AT+CIPMUX=mode OK Enable / disable multiplex mode (up to 4 conenctions)
Query AT+CIPMUX? +CIPMUX:mode OK Print current multiplex mode.
Parameters:
  • mode:
    • 0: Single connection
    • 1: Multiple connections (MAX 4)
NOTE:

This mode can only be changed after all connections are disconnected. If server is started, reboot is required.

Back to Index

AT+CIPSERVER - Configure as server

Variant Command Response Function
Set AT+CIPSERVER=mode[,port] OK Configure ESP8266 as server
Parameters:
  • mode:
  • 0: Delete server (need to follow by restart)
  • 1: Create server
  • port: port number, default is 333
NOTE:
  1. Server can only be created when AT+CIPMUX=1
  2. Server monitor will automatically be created when Server is created.
  3. When a client is connected to the server, it will take up one connection，be gave an id.

Back to Index

AT+CIPMODE - Set transfer mode

Variant Command Response Function
Query AT+CIPMODE? +CIPMODE:mode OK Set transfer mode,normal or transparent transmission.
Set AT+CIPMODE=mode OK Set transfer mode,normal or transparent transmission.
Parameters:
  • mode:
  • 0: normal mode
  • 1: unvarnished transmission mode

Back to Index

AT+CIPSTO - Set server timeout

Variant Command Response Function
Query AT+CIPSTO? +CIPSTO:time Query server timeout.
Set AT+CIPSTO=time OK Set server timeout.
Parameters:
  • time: server timeout, range 0~7200 seconds

Back to Index

AT+CIUPDATE - update through network

!!! Don’t run this unless you know what you’re doing !!!

### !!! It will likely brick your device !!! Attempts to self-update from the internet.

Variant Command Response Function
Execute AT+CIUPDATE +CIPUPDATE:n OK Start update through network
Parameters:

-n:
- 1: found server
- 2: connect server
- 3: got edition
- 4: start update

Example:
AT+CIUPDATE

+CIUPDATE: 1
+CIUPDATE: 2
+CIUPDATE: 3
+CIUPDATE: 4

x02x8clx8elx8ex1cpx0cx8cxf2nnxeex00lx8cx8el`
x02x90x12x12nnlx8cl`x02x0ex02nrx8ex92x92nx0cx0c
x02x8cx92`x02`
xf2nx0cx0cx0cx9exe0bx82nlx8cx0cx8c
xf2nnxeex00x0cx8ex0elpxf2nxe0x10x02x0c
x0crx8cx9cx9cxe2xe0x0cx0cx0c
x0cbx0cnxe2|x02xecxeclx8cx0cbx8cxf2nn
...forever

Back to Index

+IPD - Receive network data

Variant Command Response Function
Execute   +IPD,len:data Receive network data from single connection.
Execute   +IPD,id,len:data Receive network data from multiple connection.
Parameters:
  • id: id no. of connection
  • len: data length
  • data: data received
Note:

I have had no luck with this command so far.

이 게시물을
목록
번호 제목 글쓴이 날짜 조회 수
공지 IR 리모콘 코드 따기 [1] 묵묵이 2017.02.10 12
공지 rc 카 작업용 [1] 묵묵이 2017.02.07 11
공지 [sketch_mydust] 미세멘지 측정기 작업 용 [2] 묵묵이 2017.02.07 15
42 RFID 정보를 읽고 쓸 수 있는 Proxmark3 묵묵이 2024.09.13 1
41 [Android,Java] 안드로이드 - AES256 암호화 및 복호화 예제 소스 다운로드 file 묵묵이 2022.06.12 0
40 교류모터 속도제어킷 묵묵이 2021.05.02 7
39 WiFiHTTPSServer test 묵묵이 2020.03.02 7
38 8GLIB 유저매뉴얼 구글번역 묵묵이 2020.02.29 5
37 아두이노 2.4G 통신 모듈 사용하기 묵묵이 2019.04.04 9
36 전기가용량 계산 방법 - 전압, 전류와 전력량 측정에 대한 내용 묵묵이 2017.07.27 9
35 초저렴 iot 모듈 묵묵이 2017.06.04 8
34 적정 습도 / 미세먼지 값보정 묵묵이 2017.05.11 8
33 5V동작 20A 전류 센서 모듈 측정하기 ... [6] 묵묵이 2017.04.17 16
32 먼지 센서 구매 하는곳 ... 묵묵이 2017.04.15 7
31 라즈베리파이 프로그램 자동 실행 묵묵이 2017.03.12 8
30 라즈베리파일 설정 묵묵이 2017.03.11 6
29 [라즈베리파이] C언어를 이용한 GPIO 입출력 제어 [3] 묵묵이 2017.03.07 5
» 와이파이 모듈(ESP8266) 공유기 연결 AT 명령어 [1] file 묵묵이 2017.02.26 6
27 아두이노 EEPROM 사용해보기 묵묵이 2017.02.20 6
26 [아두이노] 0.96인치 OLED LCD 모듈 텍스트 출력 [2] file 묵묵이 2017.02.20 9
25 HEX to DEC 묵묵이 2017.02.10 5
쓰기 태그
위로