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Inland 8266 WIFI Module (2PCS) - Micro Center
<main> <article class="userContent"> <h2 data-id="inland-8266-wifi-module-(2pcs)"><strong>Inland 8266 WIFI Module (2PCS)</strong></h2><div class="embedExternal embedImage display-large float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/OP4W7WOXI814/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/OP4W7WOXI814/image.png" alt="image.png" height="464" width="886" loading="lazy" data-display-size="large" data-float="none"></img></a> </div> </div> <p><br></p><h2 data-id="contents"><strong>Contents</strong></h2><p>1. Product Overview</p><p>1.1 Overview</p><p>1.2 Features</p><p>1.3 Basic Parameters</p><p>1.4 Hardware Introduction</p><p>1.5 Power Consumption</p><p>1.6 Radio Frequency Indicator</p><p>2. Function Description</p><p>2.1 Main Function</p><p>2.2 Working Mod</p><p>2.3 Applications</p><p>3. Example Use</p><p>3.1 Use Uno R3 and ESP-01 as server</p><p>3.1.1 Tools</p><p>3.1.2 Connection</p><p>3.1.3 Test Code</p><p>3.1.4 Use and Result</p><p>3.2 Set ESP-01 as Client and connect server</p><p>3.2.1 Tools</p><p>3.2.2 Connection</p><p>3.2.3 Detailed debugging</p><p>4. Basic AT Commands</p><p>4.1 Test the AT</p><p>4.2 WiFi Function AT Command</p><p>4.2.1 Select WiFi Application Mode: AT+CWMODE</p><p>4.2.2 List out Access Point: AT+CWLAP</p><p>4.2.3 Add Access Point: AT+CWJAP</p><p>4.2.4 Exit Access Point: AT+CWQAP</p><p>4.2.5 Set the AP Mode: AT+CWSAP</p><p>4.3 TCPIP AT Command</p><p>4.3.1 Build TCP/UDP Connection: AT+CIPSTART</p><p>4.3.2 Get TCP/UDP Connection Status: AT+CIPSTATUS</p><p>4.3.3 Start Multilink: AT+CIPMUX</p><p>4.3.4 Send Data: AT+CIPSEND</p><p>4.3.5 Close TCP/UDP Connection: AT+CIPCLOSE</p><p>4.3.6 Get Local IP Address: AT+CIFSR</p><p>4.3.7 Select TCPIP Mode: AT+CIPMODE</p><p>4.3.8 Set the Sever Timeout: AT+CIPSTO</p><p>4.3.9 Set the Baud Rate: AT+CIOBAUD </p><p>5. AT Command Settings</p><p>6. Firmware Programming</p><p>7. Resources Download</p><p><strong> </strong></p><p><br></p><h2 data-id="1.-product-overview">1. Product Overview</h2><h2 data-id="1.1-overview">1.1 Overview</h2><p>The package includes 2pcs of ESP8266 WIFI module. </p><p>It is an ultra-low-power UART-Wi-Fi pass-through module with industry-leading package size and ultra-low power technology. </p><p>It is specially designed for mobile devices and IoT applications. It can connect users' physical devices to Wi-Fi wireless network for Internet or LAN communication, achieving the networking function.</p><h2 data-id="1.2-features">1.2 Features</h2><p>1) Support wireless 802.11 b/g/n standard</p><p>2) Support three working modes: STA/AP/STA+AP </p><p>3) Built-in TCP/IP protocol stack to support multiple TCP Client connections</p><p>4) Support various Socket AT commands</p><p>5) Support UART/GPIO data communication interface</p><p>6) Support Smart Link intelligent networking function</p><p>7) Support remote firmware upgrade (OTA)</p><p>8) Built-in 32-bit MCU, able to double as an application processor</p><p>9) Ultra low consumption, suitable for battery powered applications.</p><p>10) 3.3V single power supply</p><h2 data-id="1.3-basic-parameters">1.3 Basic Parameters</h2><div class="embedExternal embedImage display-large float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/LYFL93XZFV7E/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/LYFL93XZFV7E/image.png" alt="image.png" height="322" width="888" loading="lazy" data-display-size="large" data-float="none"></img></a> </div> </div> <div class="embedExternal embedImage display-large float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/H4RI59F2NFA1/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/H4RI59F2NFA1/image.png" alt="image.png" height="548" width="889" loading="lazy" data-display-size="large" data-float="none"></img></a> </div> </div> <div class="embedExternal embedImage display-large float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/5YGYTCKA52PH/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/5YGYTCKA52PH/image.png" alt="image.png" height="408" width="887" loading="lazy" data-display-size="large" data-float="none"></img></a> </div> </div> <h2></h2><h2 data-id="1.4-hardware-introduction">1.4 Hardware Introduction</h2><p>ESP8266 hardware has plentiful interfaces, and can support UART，IIC，PWM，GPIO，ADC and more, suited for mobile devices and IoT applications.</p><p> </p><h3 data-id="module-pins-diagram%3A"><strong>Module pins diagram:</strong></h3><div class="embedExternal embedImage display-small float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/230XVL7RU7JD/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/230XVL7RU7JD/image.png" alt="image.png" height="768" width="469" loading="lazy" data-display-size="small" data-float="none"></img></a> </div> </div> <h3 data-id="pins-definition%3A"><strong>Pins definition:</strong></h3><div class="embedExternal embedImage display-large float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/HZ9B4ZZ2X1M2/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/HZ9B4ZZ2X1M2/image.png" alt="image.png" height="468" width="828" loading="lazy" data-display-size="large" data-float="none"></img></a> </div> </div> <div class="embedExternal embedImage display-large float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/QHG6VATS0I1M/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/QHG6VATS0I1M/image.png" alt="image.png" height="291" width="827" loading="lazy" data-display-size="large" data-float="none"></img></a> </div> </div> <h2 data-id="-1"></h2><h2 data-id="power-consumption">Power Consumption</h2><p>The following measured power consumption data is based on a 3.3V power supply at 25°ambient temperature.</p><p>1. All measurements are done at the antenna interface.</p><p>2. All transmit data is based on a 90% duty cycle and measured in continuous transmission mode. </p><div class="embedExternal embedImage display-large float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/VJWB67YFRWR3/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/VJWB67YFRWR3/image.png" alt="image.png" height="348" width="846" loading="lazy" data-display-size="large" data-float="none"></img></a> </div> </div> <h2 data-id="1.6-radio-frequency-indicator">1.6 Radio Frequency Indicator</h2><p>The following data are measured at indoor temperature when the voltage is 3.3v.</p><div class="embedExternal embedImage display-large float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/PER8N0DPTOJC/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/PER8N0DPTOJC/image.png" alt="image.png" height="579" width="827" loading="lazy" data-display-size="large" data-float="none"></img></a> </div> </div> <p><strong>Note:</strong></p><p><strong> </strong>1. 72.2Mbps is measured in 802.11n mode, MCS=7，GI=200uS.</p><p>2. The output power of up to +19.5dBm can be reached in 802.11b mode.</p><p> </p><h2 data-id="2.-function-description">2. Function Description</h2><h3 data-id="2.1-main-function">2.1 Main Function</h3><h4 data-id="esp8266-can-realize-the-main-functions-as-follows%3A"><strong>ESP8266 can realize the main functions as follows: </strong></h4><ul><li><strong>Serial port passthrough: </strong>data transmission, good reliability of transfer; the maximum transmission rate is up to 460800bps.</li><li><strong>PWM regulation and control: </strong>light adjustment, RGB LED adjustment, motor speed control and more.</li><li><strong>GPIO control: </strong>control the switches, relays and more. </li></ul><p> </p><h2 data-id="2.2-working-mode">2.2 Working Mode</h2><h4 data-id="esp8266-module-supports-three-working-modes%3A-staapsta%2Bap"><strong>ESP8266 module supports three working modes: STA/AP/STA+AP</strong></h4><ul><li><strong>STA mode: </strong>The ESP8266 module can access to the Internet through a router, so the mobile phone or computer can remotely control the device through the Internet.</li><li><strong>AP mode: </strong>The ESP8266 module acts as a hotspot to enable communication directly with the mobile phone or computer to achieve wireless control of the local area network (LAN).</li><li><strong>STA+AP mode:</strong> The coexistence mode of the above two modes, that is, can achieve the seamless switching through the Internet control, more convenient for operation.</li></ul><p> </p><h2 data-id="2.3-applications">2.3 Applications</h2><p>1) Serial port CH340 to Wi-Fi;</p><p>2) Industrial transparent transmission DTU;</p><p>3) Wi-Fi remote monitoring/control;</p><p>4) Toy field</p><p>5) Color LED control;</p><p>6) Integrated management of fire protection and security intelligence;</p><p>7) Smart card terminals, wireless POS machines, Wi-Fi cameras, handheld devices, etc.</p><p><br></p><h2 data-id="3.-example-use">3. Example Use</h2><h2 data-id="3.1-use-uno-r3-and-esp-01-as-server">3.1 Use Uno R3 and ESP-01 as server</h2><h2 data-id="3.1.1-tools">3.1.1 Tools</h2><p>(1) Prepare the hardware components as follows:</p><ul><li>Computer *1; </li><li>UNO R3 development board*1; </li><li>Esp-01 module *1;</li><li>Square USB cable *1</li><li>2-cell 18650 lithium battery case with batteries *1</li></ul><p>(2) <strong>Software</strong>: using Arduino IDE</p><p><br></p><h2 data-id="3.1.2-connection">3.1.2 Connection</h2><p>Connect Uno R3 to ESP-01 module:</p><div class="embedExternal embedImage display-large float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/RWXV2O65JUSE/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/RWXV2O65JUSE/image.png" alt="image.png" height="738" width="1414" loading="lazy" data-display-size="large" data-float="none"></img></a> </div> </div> <h3 data-id="-2"></h3><h2 data-id="3.1.3-test-code">3.1.3 Test Code</h2><pre class="code codeBlock" spellcheck="false" tabindex="0">#include <SoftwareSerial.h> SoftwareSerial mySerial(2, 3); // RX, TX char OK[2]=""; ////////////////////////////////////////////////////////////////////////// void OK_config() { while(1) { OK[0]=mySerial.read(); if(OK[0]=='O') { OK[1]=mySerial.read(); if(OK[1]=='K') { break; } } delay(20); } } ////////////////////////////////////////////////////////////////////////// void esp8266_config() { Serial.println("AT+RST"); delay(1000); mySerial.println("AT+CWMODE_DEF=3"); //set the current Wi-Fi mode and save to Flash OK_config(); mySerial.println("AT+CWSAP=\"KEYES_server\",\"123456789\",11,2"); OK_config(); mySerial.println("AT+CIPMUX=1"); //multiple connection default port=333 OK_config(); mySerial.println("AT+CIPSERVER=1"); //build TCP Server OK_config(); Serial.println("Initialize the server!"); digitalWrite(13,HIGH); OK_config(); //wait Client to send OK; access to Client } /////////////////////////////////////////////////////////////////////// void setup() { Serial.begin(115200); mySerial.begin(115200); pinMode(13,OUTPUT); digitalWrite(13,LOW); esp8266_config(); } void loop() { mySerial.println("AT+CIPSEND=0,9"); delay(1000); mySerial.println("arduino"); digitalWrite(13,LOW); delay(1000); digitalWrite(13,HIGH); delay(1000); } ////////////////////////////////////////////////////////////////////////// </pre><p><strong><em>Note</em></strong><em>: The code USES the AT instruction of esp-01 to realize the required functions. Please refer to the specific AT instructions mentioned below.</em></p><p><br></p><h2 data-id="3.1.4-use-and-result">3.1.4 Use and Result </h2><p>A. connect the UNO R3 main board to the computer via USB port with a square USB cable; then open the Arduino IDE to upload the test code to UNO R3.</p><p>B. Unplug the USB cable; connect the esp-01 module to UNO R3 main board using jumper wires according to the connection diagram.</p><p>C. Supply the power to UNO R3 main board via black DC power jack with 2-cell 18650 batteries; wait for a few seconds, LED labeled L on the UNO R3 will normally turn on. Otherwise, pull out the power cable and repower again.</p><h2 data-id="3.2-set-esp-01-as-client-and-connect-server">3.2 Set ESP-01 as Client and connect server</h2><h2 data-id="3.2.1-tools">3.2.1 Tools</h2><p>(1) Prepare the hardware components as follows:</p><ul><li>Computer *1; </li><li>TTL USB to serial port module *1; </li><li>Esp-01 module *1;</li><li>Mini USB cable *1</li></ul><p>(2) <strong>Software</strong>: using esp8266 debugging tool </p><h2 data-id="3.2.2-connection">3.2.2 Connection </h2><p>Connect ESP-01 module to TTL USB-to-serial port module:</p><div class="embedExternal embedImage display-large float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/5L2AKHFN0LHI/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/5L2AKHFN0LHI/image.png" alt="image.png" height="368" width="1344" loading="lazy" data-display-size="large" data-float="none"></img></a> </div> </div> <h2 data-id="3.2.3-detailed-debugging">3.2.3 Detailed debugging</h2><p><strong>A. </strong>Follow the connection diagram to connect ESP-01 module to TTL USB-to-serial port module;</p><p><strong>B. </strong>Connect the TTL USB-to-serial port module to the computer using a mini USB cable.</p><p><strong><em>SPECIAL NOTE: </em></strong><em>need to program the corresponding drive to the TTL USB-to-serial port module before use.</em></p><p><strong>C. </strong>Open the USR-TCP232-Test debug tool, click <strong><em>Options (O)</em></strong> select the language, select the proper USB port and set the baud rate to <strong>115200</strong>; set the <strong><em>Recv Options</em></strong>, open the serial port. As shown below.</p><div class="embedExternal embedImage display-medium float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/IRI36P66Z5A3/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/IRI36P66Z5A3/image.png" alt="image.png" height="622" width="721" loading="lazy" data-display-size="medium" data-float="none"></img></a> </div> </div> <div class="embedExternal embedImage display-medium float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/7J6OCNB6JZTZ/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/7J6OCNB6JZTZ/image.png" alt="image.png" height="622" width="721" loading="lazy" data-display-size="medium" data-float="none"></img></a> </div> </div> <p><br></p><p><strong>D. </strong>AT+CWMODE=3 set the ESP-01 module as mode 3:</p><div class="embedExternal embedImage display-medium float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/CBTJCC9OBA2V/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/CBTJCC9OBA2V/image.png" alt="image.png" height="622" width="904" loading="lazy" data-display-size="medium" data-float="none"></img></a> </div> </div> <p><strong>Special attention: </strong></p><p><strong>1</strong> : To fill in the instruction, a newline character should be added after the instruction is typed, as shown in the figure above. All subsequent instructions should be operated in this way.</p><p><strong>2 </strong>:<strong> </strong>To send instructions to esp-01.</p><p><strong>3</strong> : The information returned after the instruction is received by esp-01.</p><p><strong> </strong></p><p><strong>E.</strong> AT+CWJAP="KEYES_server","123456789" connect to server ESP-01 WIFI:</p><div class="embedExternal embedImage display-medium float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/VA5CYDV88D1K/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/VA5CYDV88D1K/image.png" alt="image.png" height="620" width="915" loading="lazy" data-display-size="medium" data-float="none"></img></a> </div> </div> <p><strong>F. </strong>AT+CIPAP_CUR="192.168.1.20","192.168.1.20" modify the IP of client ESP-01 AP; modifying the IP of AP is to avoid the conflict between client AP’s IP and server AP’s IP. As figure shown below.</p><div class="embedExternal embedImage display-medium float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/F6DUS31XGBR2/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/F6DUS31XGBR2/image.png" alt="image.png" height="622" width="917" loading="lazy" data-display-size="medium" data-float="none"></img></a> </div> </div> <p><strong>G. </strong> AT+CIPSTART="TCP","192.168.4.1", 333 connect to server ESP-01, as shown below.</p><div class="embedExternal embedImage display-medium float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/JJYLL5VFIPQ8/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/JJYLL5VFIPQ8/image.png" alt="image.png" height="622" width="917" loading="lazy" data-display-size="medium" data-float="none"></img></a> </div> </div> <p><strong>H. </strong> Send the AT+CIPMODE=1 command to set the client ESP-01 as pass-through mode. As shown below.</p><div class="embedExternal embedImage display-medium float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/FHHPWGD6RF01/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/FHHPWGD6RF01/image.png" alt="image.png" height="622" width="917" loading="lazy" data-display-size="medium" data-float="none"></img></a> </div> </div> <p><strong>I. </strong>Send the AT+CIPSEND command means the client ESP-01 send the data instruction to the server ESP-01. As shown below.</p><div class="embedExternal embedImage display-medium float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/12UHX2EE9U0W/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/12UHX2EE9U0W/image.png" alt="image.png" height="622" width="917" loading="lazy" data-display-size="medium" data-float="none"></img></a> </div> </div> <p><strong>J.</strong> Client ESP-01 sends the “OK” character to server ESP-01; trigger the server ESP-01 to send the “Arduino” character to client ESP-01 all the time. As figure shown below.</p><div class="embedExternal embedImage display-medium float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/CFAT5RAB4XR5/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/CFAT5RAB4XR5/image.png" alt="image.png" height="622" width="917" loading="lazy" data-display-size="medium" data-float="none"></img></a> </div> </div> <p><strong>K.</strong> At this moment, the LED labeled L on the UNO R3 main board connected to server ESP-01 will turn on normally, which illustrates it always send the data to client ESP-01.</p><p><br></p><h2 data-id="4.-basic-at-commands">4. Basic AT Commands</h2><h2 data-id="4.1-test-the-at">4.1 Test the AT</h2><h4 data-id="syntax-rules%3A"><strong>Syntax Rules:</strong></h4><div class="embedExternal embedImage display-large float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/5TMG2VMSCMA9/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/5TMG2VMSCMA9/image.png" alt="image.png" height="149" width="851" loading="lazy" data-display-size="large" data-float="none"></img></a> </div> </div> <div class="embedExternal embedImage display-large float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/WKM0DB1O10AB/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/WKM0DB1O10AB/image.png" alt="image.png" height="253" width="853" loading="lazy" data-display-size="large" data-float="none"></img></a> </div> </div> <h4 data-id="parameter-definition%3A"><strong>Parameter Definition:</strong></h4><div class="embedExternal embedImage display-large float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/AP2IQW0WUFMK/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/AP2IQW0WUFMK/image.png" alt="image.png" height="149" width="850" loading="lazy" data-display-size="large" data-float="none"></img></a> </div> </div> <p><br></p><h2 data-id="4.2.2-list-out-access-point%3A-at%2Bcwlap">4.2.2 List out Access Point: AT+CWLAP</h2><h4 data-id="syntax-rules%3A-1"><strong>Syntax Rules:</strong></h4><div class="embedExternal embedImage display-large float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/DIGYE3ALX11N/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/DIGYE3ALX11N/image.png" alt="image.png" height="182" width="850" loading="lazy" data-display-size="large" data-float="none"></img></a> </div> </div> <p><br></p><h4 data-id="parameter-definition%3A-1"><strong>Parameter Definition:</strong></h4><div class="embedExternal embedImage display-large float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/K2791T8MHNNQ/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/K2791T8MHNNQ/image.png" alt="image.png" height="219" width="851" loading="lazy" data-display-size="large" data-float="none"></img></a> </div> </div> <div class="embedExternal embedImage display-large float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/PPXBZU3CUUJV/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/PPXBZU3CUUJV/image.png" alt="image.png" height="148" width="851" loading="lazy" data-display-size="large" data-float="none"></img></a> </div> </div> <p><br></p><h2 data-id="4.2.3-add-access-point%3A-at%2Bcwjap">4.2.3 Add Access Point: AT+CWJAP</h2><h4 data-id="syntax-rules%3A-2"><strong>Syntax Rules:</strong></h4><div class="embedExternal embedImage display-large float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/1AXC48P5SZPK/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/1AXC48P5SZPK/image.png" alt="image.png" height="255" width="852" loading="lazy" data-display-size="large" data-float="none"></img></a> </div> </div> <h4 data-id="parameter-definition%3A-2"><strong>Parameter Definition:</strong></h4><div class="embedExternal embedImage display-large float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/BXK6DJFJ0HGC/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/BXK6DJFJ0HGC/image.png" alt="image.png" height="116" width="857" loading="lazy" data-display-size="large" data-float="none"></img></a> </div> </div> <p><br></p><h2 data-id="4.2.4-exit-access-point%3A-at%2Bcwqap">4.2.4 Exit Access Point: AT+CWQAP</h2><h4 data-id="syntax-rules%3A-3"><strong>Syntax Rules:</strong></h4><div class="embedExternal embedImage display-large float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/ISQ7ZBKF9I07/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/ISQ7ZBKF9I07/image.png" alt="image.png" height="187" width="856" loading="lazy" data-display-size="large" data-float="none"></img></a> </div> </div> <p><br></p><h2 data-id="4.2.5-set-the-ap-mode%3A-at%2Bcwsap">4.2.5 Set the AP Mode: AT+CWSAP</h2><h4 data-id="syntax-rules%3A-4"><strong>Syntax Rules:</strong></h4><div class="embedExternal embedImage display-large float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/CT63H051Z0NN/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/CT63H051Z0NN/image.png" alt="image.png" height="184" width="848" loading="lazy" data-display-size="large" data-float="none"></img></a> </div> </div> <p><strong>Parameter Definition:</strong></p><div class="embedExternal embedImage display-large float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/GZACCI929UP9/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/GZACCI929UP9/image.png" alt="image.png" height="219" width="851" loading="lazy" data-display-size="large" data-float="none"></img></a> </div> </div> <div class="embedExternal embedImage display-large float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/G3WYUEXEMVF8/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/G3WYUEXEMVF8/image.png" alt="image.png" height="113" width="850" loading="lazy" data-display-size="large" data-float="none"></img></a> </div> </div> <p><br></p><h2 data-id="4.3-tcpip-at-command">4.3 TCPIP AT Command</h2><h2 data-id="4.3.1-build-tcpudp-connection%3A-at%2Bcipstart">4.3.1 Build TCP/UDP Connection: AT+CIPSTART</h2><h4 data-id="syntax-rules%3A-5"><strong>Syntax Rules:</strong></h4><div class="embedExternal embedImage display-large float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/1YQAMT53WJUX/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/1YQAMT53WJUX/image.png" alt="image.png" height="257" width="852" loading="lazy" data-display-size="large" data-float="none"></img></a> </div> </div> <div class="embedExternal embedImage display-large float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/GGF64YZS3E6Q/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/GGF64YZS3E6Q/image.png" alt="image.png" height="493" width="852" loading="lazy" data-display-size="large" data-float="none"></img></a> </div> </div> <h4 data-id="parameter-definition%3A-3"><strong>Parameter Definition:</strong></h4><div class="embedExternal embedImage display-large float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/GW2PWUMNEDQS/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/GW2PWUMNEDQS/image.png" alt="image.png" height="289" width="851" loading="lazy" data-display-size="large" data-float="none"></img></a> </div> </div> <p><br></p><h2 data-id="4.3.2-get-tcpudp-connection-status%3A-at%2Bcipstatus">4.3.2 Get TCP/UDP Connection Status: AT+CIPSTATUS</h2><h4 data-id="syntax-rules%3A-6"><strong>Syntax Rules:</strong></h4><div class="embedExternal embedImage display-large float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/GI5895D1ZVSU/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/GI5895D1ZVSU/image.png" alt="image.png" height="147" width="850" loading="lazy" data-display-size="large" data-float="none"></img></a> </div> </div> <div class="embedExternal embedImage display-large float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/413BNED1O5P2/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/413BNED1O5P2/image.png" alt="image.png" height="434" width="851" loading="lazy" data-display-size="large" data-float="none"></img></a> </div> </div> <h4 data-id="parameter-definition%3A-4"><strong>Parameter Definition:</strong></h4><div class="embedExternal embedImage display-large float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/4YO94BSUVK6Q/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/4YO94BSUVK6Q/image.png" alt="image.png" height="575" width="852" loading="lazy" data-display-size="large" data-float="none"></img></a> </div> </div> <div class="embedExternal embedImage display-large float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/U5377H33IR7K/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/U5377H33IR7K/image.png" alt="image.png" height="152" width="852" loading="lazy" data-display-size="large" data-float="none"></img></a> </div> </div> <p><br></p><h2 data-id="4.3.3-start-multilink%3A-at%2Bcipmux">4.3.3 Start Multilink: AT+CIPMUX</h2><h4 data-id="syntax-rules%3A-7"><strong>Syntax Rules:</strong></h4><div class="embedExternal embedImage display-large float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/14TWD6PQCMIG/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/14TWD6PQCMIG/image.png" alt="image.png" height="357" width="853" loading="lazy" data-display-size="large" data-float="none"></img></a> </div> </div> <h4 data-id="parameter-definition%3A-5"><strong>Parameter Definition:</strong></h4><div class="embedExternal embedImage display-large float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/LF9WFUBPOL20/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/LF9WFUBPOL20/image.png" alt="image.png" height="111" width="852" loading="lazy" data-display-size="large" data-float="none"></img></a> </div> </div> <h2 data-id="4.3.4-send-data%3A-at%2Bcipsend">4.3.4 Send Data: AT+CIPSEND</h2><h4 data-id="syntax-rules%3A-8"><strong>Syntax Rules:</strong></h4><div class="embedExternal embedImage display-large float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/XJSU36BNGD1J/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/XJSU36BNGD1J/image.png" alt="image.png" height="243" width="925" loading="lazy" data-display-size="large" data-float="none"></img></a> </div> </div> <div class="embedExternal embedImage display-large float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/VSZ0WXWI69J1/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/VSZ0WXWI69J1/image.png" alt="image.png" height="535" width="924" loading="lazy" data-display-size="large" data-float="none"></img></a> </div> </div> <div class="embedExternal embedImage display-large float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/RWJRBPQ8QOQN/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/RWJRBPQ8QOQN/image.png" alt="image.png" height="245" width="925" loading="lazy" data-display-size="large" data-float="none"></img></a> </div> </div> <h4 data-id="parameter-definition%3A-6"><strong>Parameter Definition:</strong></h4><div class="embedExternal embedImage display-large float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/ICW4T654T1NT/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/ICW4T654T1NT/image.png" alt="image.png" height="114" width="854" loading="lazy" data-display-size="large" data-float="none"></img></a> </div> </div> <h2 data-id="4.3.5-close-tcpudp-connection%3A-at%2Bcipclose">4.3.5 Close TCP/UDP Connection: AT+CIPCLOSE</h2><h4 data-id="syntax-rules%3A-9"><strong>Syntax Rules:</strong></h4><div class="embedExternal embedImage display-large float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/CNVUVP9NND0F/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/CNVUVP9NND0F/image.png" alt="image.png" height="539" width="927" loading="lazy" data-display-size="large" data-float="none"></img></a> </div> </div> <div class="embedExternal embedImage display-large float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/D5V5EPEOQHN3/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/D5V5EPEOQHN3/image.png" alt="image.png" height="175" width="926" loading="lazy" data-display-size="large" data-float="none"></img></a> </div> </div> <h4 data-id="parameter-definition%3A-7"><strong>Parameter Definition:</strong></h4><div class="embedExternal embedImage display-large float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/CNG8PP53WBV4/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/CNG8PP53WBV4/image.png" alt="image.png" height="147" width="851" loading="lazy" data-display-size="large" data-float="none"></img></a> </div> </div> <h2 data-id="4.3.6-get-local-ip-address%3A-at%2Bcifsr">4.3.6 Get Local IP Address: AT+CIFSR</h2><h4 data-id="syntax-rules%3A-10"><strong>Syntax Rules:</strong></h4><div class="embedExternal embedImage display-large float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/HBTTHOO7VFAE/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/HBTTHOO7VFAE/image.png" alt="image.png" height="263" width="857" loading="lazy" data-display-size="large" data-float="none"></img></a> </div> </div> <h4 data-id="parameter-definition%3A-8"><strong>Parameter Definition:</strong></h4><div class="embedExternal embedImage display-large float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/M9U6AVAVY72F/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/M9U6AVAVY72F/image.png" alt="image.png" height="113" width="855" loading="lazy" data-display-size="large" data-float="none"></img></a> </div> </div> <h2 data-id="4.3.7-select-tcpip-mode%3A-at%2Bcipmode">4.3.7 Select TCPIP Mode: AT+CIPMODE</h2><h4 data-id="syntax-rules%3A-11"><strong>Syntax Rules:</strong></h4><div class="embedExternal embedImage display-large float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/SDAKBSTU98G5/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/SDAKBSTU98G5/image.png" alt="image.png" height="188" width="855" loading="lazy" data-display-size="large" data-float="none"></img></a> </div> </div> <h4 data-id="parameter-definition%3A-9"><strong>Parameter Definition:</strong></h4><div class="embedExternal embedImage display-large float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/O4GL9XCAR464/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/O4GL9XCAR464/image.png" alt="image.png" height="115" width="854" loading="lazy" data-display-size="large" data-float="none"></img></a> </div> </div> <h2 data-id="4.3.8-set-the-sever-timeout%3A-at%2Bcipsto">4.3.8 Set the Sever Timeout: AT+CIPSTO</h2><h4 data-id="syntax-rules%3A-12"><strong>Syntax Rules:</strong></h4><div class="embedExternal embedImage display-large float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/23NB37VHBOP6/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/23NB37VHBOP6/image.png" alt="image.png" height="192" width="854" loading="lazy" data-display-size="large" data-float="none"></img></a> </div> </div> <h4 data-id="parameter-definition%3A-10"><strong>Parameter Definition:</strong></h4><div class="embedExternal embedImage display-large float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/CIHF3HBA5EUL/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/CIHF3HBA5EUL/image.png" alt="image.png" height="145" width="856" loading="lazy" data-display-size="large" data-float="none"></img></a> </div> </div> <h2 data-id="4.3.9-set-the-baud-rate%3A-at%2Bciobaud">4.3.9 Set the Baud Rate: AT+CIOBAUD</h2><h4 data-id="syntax-rules%3A-13"><strong>Syntax Rules:</strong></h4><div class="embedExternal embedImage display-large float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/PI1TQJIJR1CY/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/PI1TQJIJR1CY/image.png" alt="image.png" height="113" width="854" loading="lazy" data-display-size="large" data-float="none"></img></a> </div> </div> <p>The default baud rate is 9600. </p><h4 data-id="parameter-definition%3A-11"><strong>Parameter Definition:</strong></h4><div class="embedExternal embedImage display-large float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/WQCFKMXXY24C/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/WQCFKMXXY24C/image.png" alt="image.png" height="43" width="852" loading="lazy" data-display-size="large" data-float="none"></img></a> </div> </div> <div class="embedExternal embedImage display-large float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/BAKUAONX2LJD/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/BAKUAONX2LJD/image.png" alt="image.png" height="573" width="855" loading="lazy" data-display-size="large" data-float="none"></img></a> </div> </div> <p><br></p><h2 data-id="5.-at-command-settings">5. AT Command Settings</h2><p>When setting the AT command, you should use a USB to Serial module, that is FT232 module, and a WIFI to serial shield. </p><p>Connect well and then connect them to your computer using mini USB cable.</p><div class="embedExternal embedImage display-large float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/DL9SXG9PJSDF/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/DL9SXG9PJSDF/image.png" alt="image.png" height="219" width="1188" loading="lazy" data-display-size="large" data-float="none"></img></a> </div> </div> <p>Connected successfully, open the<a href="https://drive.google.com/open?id=1UAYAhdqr2iXO49ibkLyV4c2Aieteihs6" rel="nofollow noreferrer ugc"> <strong>ESP8266 debugging tool</strong></a>, set the baud rate to 115200, click to open the Serial Port, and click Test the AT. </p><p>You should see the data received window will print out<strong> AT OK</strong>. To set other AT commands, the method is similar.</p><div class="embedExternal embedImage display-medium float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/4R2OIGLD0FSB/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/4R2OIGLD0FSB/image.png" alt="image.png" height="827" width="1339" loading="lazy" data-display-size="medium" data-float="none"></img></a> </div> </div> <h2 data-id="6.-firmware-programming">6. Firmware Programming</h2><p>When setting the AT command, you should use a USB to Serial module, that is FT232 module, and a WIFI to serial shield. </p><p>Connect well and then connect them to your computer using mini USB cable.</p><div class="embedExternal embedImage display-large float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/AHP3Y8WZHEVI/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/AHP3Y8WZHEVI/image.png" alt="image.png" height="219" width="1188" loading="lazy" data-display-size="large" data-float="none"></img></a> </div> </div> <p>Then open<a href="https://drive.google.com/open?id=1Zjg-lg7ySsmN4C3A0Oz9UJCdXqtkdf_R" rel="nofollow noreferrer ugc"><strong> flash_download_tools_v3.6.5software</strong></a>, click to open.</p><div class="embedExternal embedImage display-medium float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/JODOI25ULVIP/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/JODOI25ULVIP/image.png" alt="image.png" height="827" width="1421" loading="lazy" data-display-size="medium" data-float="none"></img></a> </div> </div> <p>Wait for a minute, pop up the below interface, click the <strong>ESP8266 Download Tool</strong>.</p><div class="embedExternal embedImage display-small float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/1VBKFQ8AUEDA/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/1VBKFQ8AUEDA/image.png" alt="image.png" height="827" width="496" loading="lazy" data-display-size="small" data-float="none"></img></a> </div> </div> <p>Pop up the interface to set the firmware burning. This is the address of firmware burning. </p><div class="embedExternal embedImage display-small float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/CSHX1HN9VVQC/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/CSHX1HN9VVQC/image.png" alt="image.png" height="44" width="425" loading="lazy" data-display-size="small" data-float="none"></img></a> </div> </div> <div class="embedExternal embedImage display-small float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/PKH1O0JCQASF/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/PKH1O0JCQASF/image.png" alt="image.png" height="768" width="493" loading="lazy" data-display-size="small" data-float="none"></img></a> </div> </div> <p>Hold the <strong>FLASH </strong>button on the shield, and Tap <strong>START</strong> button, then press <strong>RST </strong>button on the shield, release the <strong>FLASH </strong>button. The module will enter the download mode. Shown below. </p><div class="embedExternal embedImage display-small float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/REJ30Z71R6YI/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/REJ30Z71R6YI/image.png" alt="image.png" height="709" width="455" loading="lazy" data-display-size="small" data-float="none"></img></a> </div> </div> <div class="embedExternal embedImage display-small float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/LALVVLLOCJJW/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/LALVVLLOCJJW/image.png" alt="image.png" height="709" width="455" loading="lazy" data-display-size="small" data-float="none"></img></a> </div> </div> <p>Firmware download completed, can enter the corresponding software to set the AT command.</p> </article> </main>
