Ai Thinker Technology ESP01F WiFi module User Manual
Shenzhen Ai-Thinker Technology co., LTD WiFi module
User Manual
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| Document ID | 4062349 |
| Application ID | OqGqsHyWwQhLBuXMV2lDwQ== |
| Document Description | User Manual |
| Short Term Confidential | No |
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| Document Type | User Manual |
| Display Format | Adobe Acrobat PDF - pdf |
| Filesize | 101.88kB (1273522 bits) |
| Date Submitted | 2018-11-06 00:00:00 |
| Date Available | 2018-11-06 00:00:00 |
| Creation Date | 2018-08-20 17:56:35 |
| Producing Software | PDF-XChange Printer 2012 (5.0 build 265) [Windows 8 Enterprise x64 (Build 9200)] |
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| Document Title | User Manual |
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ink er -T Ai ESP-01/07/12 Series Modules User's Manual Version 1.4 Ai-Thinker Inc Copyright (c) 2017 ESP-01/07/12 Series Modules User's Manual V1.4 Revision Record Version Author Release Notes 2017.07.01 V1.0 Wang Chong First Version 2017.09.04 V1.1 Wang Chong Add ESP-01M, Delete ESP-12E 2017.12.18 V1.2 Fang Dongbin ink er Date Modify the GPIO4 pin description, change the contact number V1.3 Lv Junxiong Add ESP-01F 2018.8.16 V1.4 Lv Junxiong Add ESP-01E Ai -T 2018.3.10 ESP-01/07/12 Series Modules User's Manual V1.4 FCC STATEMENT Ai -T ink er Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment. This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy, and if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: – Reorient or relocate the receiving antenna. – Increase the separation between the equipment and receiver. – Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. – Consult the dealer or an experienced radio/TV technician for help. Please notice that if the FCC identification number is not visible when the module is installed inside another device, then the outside of the device into which the module is installed must also display a label referring to the enclosed module. This exterior label can use wording such as the following: “Contains FCC ID:2AHMR-ESP01M” or “Contains FCC ID:2AHMR-ESP07S”or “Contains FCC ID:2AHMR-ESP12S” or “Contains FCC ID:2AHMR-ESP12F” or “Contains FCC ID:2AHMR-ESP01E”or “Contains FCC ID:2AHMR-ESP01F”any similar wording that expresses the same meaning may be used. This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with a minimum distance of 20cm between the radiator & your body. This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter. The module is limited to OEM installation ONLY. The OEM integrator is responsible for ensuring that the end-user has no manual instruction t o remove or install module. The module is limited to installation in mobile application. A separate approval is required for all other operating configurations, including portable con figurations with respect to Part 2.1093 and difference antenna configurations. There is requirement that the grantee provide guidance to the host manufacturer for complia nce with Part 15B requirements. ESP-01/07/12 Series Modules User's Manual V1.4 Table Of Contents ink er 1 Product Overview ...........................................................................................1 1.1 Product Features...................................................................................1 1.2 Application Plan...................................................................................1 2 Module Interface.............................................................................................2 2.1 Package Size ........................................................................................2 2.1 Pin Definition.......................................................................................6 2.2 Boot Mode ...........................................................................................7 3 Electrical Characteristics.................................................................................8 3.1 Maximum Ratings ................................................................................8 3.2 Suggested Working Environment .........................................................8 3.3 Digital Port Features ............................................................................8 3.4 Power Consumption .............................................................................8 3.5 Transmit Power .................................................................................. 10 3.6 Receive Sensitivity ............................................................................. 10 -T 4 Hardware Guidance ...................................................................................... 11 4.1 Typical Applications .......................................................................... 11 4.2 PCB Antenna Display Instructions .....................................................13 4.3 Module Peripheral Routing Instructions .............................................14 4.4 GPIO Level Conversion .....................................................................15 4.5 Power Supply Reference Design ........................................................ 15 4.6 ADC Supply Reference Design ..........................................................15 4.7 Automatically Download Reference Design .......................................16 4.8 Reflow oven temperature curve .......................................................... 16 Ai 5 Usage Guide ................................................................................................. 17 5.1 Introduction To The Basic AT Command ...........................................17 5.1.1 AT ........................................................................................... 17 5.1.2 AT+GMR ................................................................................17 5.1.3 AT+RST.................................................................................. 17 ESP-01/07/12 Series Modules User's Manual V1.4 5.1.4 AT+RESTORE........................................................................18 ink er 5.2 Use Examples ....................................................................................18 5.2.1 TCP Communication Test........................................................ 18 5.2.2 UDP Communication Test ....................................................... 20 6 FAQ .............................................................................................................22 6.1 Garbage Instructions When Power Is On ............................................22 6.2 How To Shield The Power When The Garbled ................................... 22 6.3 Can’t Burn Normally ....................................................................... 22 6.4 SDK Development Environment ........................................................23 6.5 Startup Information Description .........................................................23 7 Module Selection .......................................................................................... 23 Ai -T 8 Contact US ................................................................................................... 25 ESP-01/07/12 Series Modules User's Manual V1.4 ink er 1 Product Overview ESP8266 series wireless module is a series of cost-effective Wi-Fi SOC module which can be developed independently. The series modules support the standard IEEE802.11 b/g/n protocol, built-in complete TCP/IP protocol stack. Users can use this series of modules to add networking capabilities to existing devices, or to build standalone network controllers. Ai-Thinker Technology can provide customers with a complete hardware, software reference program, in order to shorten your product development cycle, for your cost savings. 1.1 Product Features The smallest 802.11b/g/n Wi-Fi SOC module Using low-power 32-bit CPU, can also serve as the application processor -T Clocked at up to 160MHz Built-in 10 bit high precision ADC Support UART/GPIO/IIC/PWM/ADC/HSPI and other interfaces Integrated Wi-Fi MAC/BB/RF/PA/LNA Supports multiple sleep modes, deep sleep current as low as 20uA Embedded Lwip protocol stack Support STA/AP/STA + AP work mode Supports Smart Config/AirKiss key distribution network Serial port rate up to 4Mbps General AT commands can be used quickly Support SDK secondary development Supports serial local upgrade and remote firmware upgrade (FOTA) Ai 1.2 Application Plan Household appliances Industrial wireless control Wearable electronic products Home automation Infant Monitor Wireless location sensing device Smart socket/intelligent light IP camera Security ID tag Mesh network Sensor network Wireless positioning system beacon Copyright © 2017 Shenzhen Ai-Thinker Technology Co., Ltd All Rights Reserved Page 1 of 23 ESP-01/07/12 Series Modules User's Manual V1.4 2.1 Package Size ink er 2 Module Interface Ai -T Figure 2.1 ESP-01/ESP-01S pin dimensions Figure 2.2 ESP-01M pin dimensions Copyright © 2017 Shenzhen Ai-Thinker Technology Co., Ltd All Rights Reserved Page 2 of 23 ink er ESP-01/07/12 Series Modules User's Manual V1.4 -T Figure 2.3 ESP-01F pin dimensions Ai Figure 2.4 ESP-07 pin dimensions Copyright © 2017 Shenzhen Ai-Thinker Technology Co., Ltd All Rights Reserved Page 3 of 23 ink er ESP-01/07/12 Series Modules User's Manual V1.4 Ai -T Figure 2.5 ESP-07S pin dimensions Figure 2.6 ESP-12F pin dimensions Copyright © 2017 Shenzhen Ai-Thinker Technology Co., Ltd All Rights Reserved Page 4 of 23 ink er ESP-01/07/12 Series Modules User's Manual V1.4 Ai -T Figure 2.7 ESP-12S pin dimensions Figure 2.7 ESP-01E pin dimensions Copyright © 2017 Shenzhen Ai-Thinker Technology Co., Ltd All Rights Reserved Page 5 of 23 ESP-01/07/12 Series Modules User's Manual V1.4 Table 2.1 ESP series module size table Width (mm) ESP-01 ESP-01S 24.7 14.4 ESP-01M 18 18 ESP-01F 11 10 ESP-07 21.2 16.0 ESP-07S 17.0 16.0 ESP-12F 24.0 16.0 ESP-12S 24.0 16.0 2.1 Pin Definition Height (mm PAD size (mm) Pin Spacing (mm) Shield ed Shell (mm) Thickness (mm) 11.0 1.5 x 1.5 2.54 1.0±0.1 2.8±0.2 1.6 2.0 0.8±0.1 1.1 1.2 0.8±0.1 ink er Model Length (mm) 2.0±0.2 3.0±0.2 2.0 2.0 0.8±0.1 3.0±0.3 1 x 1.2 2.0 2.0 0.8±0.1 2.0 2.0 0.8±0.1 2.0 2.0 0.8±0.1 3.0±0.2 3.0±0.2 1 x 1.2 Table 2.2 ESP Series Module Pin Function Definitions -T Pin Number Pin Nam 01 01S 01M 01E 01F 07 07S 12S 18 18 16 RST Reset Pin, Active Low 16 16 ADC EN 17 17 IO16 15 15 14 14 IO14 HSPI_CLK IR_T I2C_SCL I2SI_WS IO12 HSPI_MISO Ai 12F Remarks AD conversiont, Input voltage range 0~1V, the value range is Chip Enabled Pin, Active High Connect with RST pin to wake up Deep Sleep IO13 HSPI_MOSI; UART0_CTS 17 VCC Module power supply pin, the voltage range of 3.0 ~ 3.6V CS0 Flash chip select signal 10 11 11 11 MIS Slave Output Master Input IO9 Gpio9 Only ESP-01M/01E Can Copyright © 2017 Shenzhen Ai-Thinker Technology Co., Ltd All Rights Reserved Page 6 of 23 ESP-01/07/12 Series Modules User's Manual V1.4 12 12 12 IO10 Gpio10,Only ESP-01M/01E Can 13 2/18 MOS Master Output Slave Input SCL Clock GND GND 10 11 10 10 12 13 13 13 14 15 ink er 14 15 10 16 11 17 IO15 HSPI_CS U0_RTS I2SO_BCK IO2 U1_TXD I2C_SDA I2SO_WS 12 18 IO0 13 19 IO4 GPIO0 HSPI_MISO I2SI_DATA GPIO4 14 20 IO5 IR_R 15 21 RXD GPIO3 16 22 TXD GPIO1 ANT I2SO_DATA Only ESP-01F/01E Can Note: Only GPIO4 and GPIO5 are low at boot time, the other GPIO are high. 2.2 Boot Mode Table 2.3 Description of the ESP series module boot mode CH_PD (EN) RST GPIO15 GPIO0 GPIO2 TXD0 high high low low high high high high low high high high high high low -T Mode Ai Download mode Running mode Chip Test mode Copyright © 2017 Shenzhen Ai-Thinker Technology Co., Ltd All Rights Reserved Page 7 of 23 ESP-01/07/12 Series Modules User's Manual V1.4 3 Electrical Characteristics ink er 3.1 Maximum Ratings Table 3.1 Maximum Ratings Rated value Storage Temperature Maximum Welding Temperature Supply Voltage condition Value Unit -40 ~ 90 250 IPC/JEDEC J-STD-020 +3.0 ~ +3.6 3.2 Suggested Working Environment Table 3.2 Recommended working environment Work Environment Name Operating Temperature VDD Typ Max -20 20 85 3.0 3.3 3.6 -T Supply Voltage Min Unit 3.3 Digital Port Features Table 3.3 Digital Port Features Port Name Min Typ Max Unit Input logic level low VIL -0.3 0.25 * VDD Input logic level high VIH 0.75 * VDD VDD + 0.3 Output logic level low VOL 0.1 * VDD Output logic level high VOH 0.8 * VDD Ai Note: Unless otherwise specified, the test conditions are: VDD = 3.3 V and temperature 20 3.4 Power Consumption All measurements are made at the antenna interface without SAW filters. Copyright © 2017 Shenzhen Ai-Thinker Technology Co., Ltd All Rights Reserved Page 8 of 23 ESP-01/07/12 Series Modules User's Manual V1.4 All transmit data is based on a 90% duty cycle measured in the continuous firing mode. Mode ink er Table 3.4 Power consumption Min Ty Ma Unit Transmit 802.11b, CCK 11Mbps, POUT = + 17dBm 170 mA Transmit 802.11g, OFDM 54Mbps, POUT = + 15dBm 140 mA Transmit 802.11n, MCS7, POUT = + 13dBm 120 mA Receive 802.11b, packet length 1024 bytes, -80dBm 50 mA Receive 802.11g, packet length 1024 bytes, -70dBm 56 mA Receive 802.11n, packet length 1024 bytes, -65dBm 56 mA Modem-Sleep 20 mA mA Deep-Sleep 20 uA Power Off uA -T Light-Sleep Ai Note: Modem-Sleep is used to require the CPU to remain in operation, such as PWM or I2S. When there is no data transmission while maintaining a WiFi connection, power off the WiFi Modem circuit according to the 802.11 standard (eg U-APSD). For example, in DTIM3, every sleep 300mS, wake up 3mS receive AP Beacon package, etc., the overall average current of about 20mA. Note : Light-Sleep for CPU can be suspended applications, such as WiFi switch. If there is no data transmission while maintaining a WiFi connection, the WiFi Modem circuit can be switched off and the CPU is powered down according to the 802.11 standard (eg U-APSD). For example, at DTIM3, every sleep 300 ms, wake up 3 ms to receive AP's Beacon packets, etc., the overall average current is about 2 mA. Note: Deep-Sleep is used for applications that do not have to keep the WiFi connection for a long time, such as a sensor that measures the temperature once every 100 seconds. Every 300 s wake up after 0.3s - 1s connected to the AP to send data, the overall average current can be much smaller than 2mA. Copyright © 2017 Shenzhen Ai-Thinker Technology Co., Ltd All Rights Reserved Page 9 of 23 ESP-01/07/12 Series Modules User's Manual V1.4 3.5 Transmit Power Describe 802.11b@11Mbps 802.11g@54Mbps 802.11n@HT20, MCS7 ink er Table 3.5 RF parameters Min Typ Max Unit 14 16 18 dBm 12 14 16 dBm 11 13 15 dBm 3.6 Receive Sensitivity Table 3.6 Receiving Sensitivity Parameter DSSS, 1 Mbps CCK, 11 Mbps 6 Mbps (1/2 BPSK) 54 Mbps (3/4 64-QAM) Min Max Unit -95 dBm -80 dBm -88 dBm -70 dBm -67 dBm Ai -T HT20, MCS7 (65 Mbps, 72.2 Mbps) Typ Copyright © 2017 Shenzhen Ai-Thinker Technology Co., Ltd All Rights Reserved Page 10 of 23 ESP-01/07/12 Series Modules User's Manual V1.4 4 Hardware Guidance ink er 4.1 Typical Applications Note: You can’t use USB to TTL 3.3V or 5V power supply, it is recommended to use two dry batteries or after conversion through the LDO 3.3V, it is strongly recommended to buy a new development board. -T Figure 4.1 Typical application of ESP-01 Ai Figure 4.2 Typical application of ESP-01S Figure 4.3 Typical application of ESP-01M Copyright © 2017 Shenzhen Ai-Thinker Technology Co., Ltd All Rights Reserved Page 11 of 23 ink er ESP-01/07/12 Series Modules User's Manual V1.4 -T Figure 4.4 Typical application of ESP-01F Ai Figure 4.5 Typical application of ESP-07 Figure 4.6 Typical application of ESP-07S Copyright © 2017 Shenzhen Ai-Thinker Technology Co., Ltd All Rights Reserved Page 12 of 23 ink er ESP-01/07/12 Series Modules User's Manual V1.4 Figure 4.7 Typical application of ESP-12E/ESP-12F -T Figure 4.8 Typical application of ESP-12S Ai Figure 4.9 Typical application of ESP-01E 4.2 PCB Antenna Display Instructions The ESP8266 series module can be soldered to the PCB board. In order to get the best RF performance of the end product, please pay attention to the rational Copyright © 2017 Shenzhen Ai-Thinker Technology Co., Ltd All Rights Reserved Page 13 of 23 ESP-01/07/12 Series Modules User's Manual V1.4 design of the module and the placement of the antenna on the bottom plate according Option 1 (recommended): ink er to this guide. Place the module along the edge of the PCB board, and the antenna is placed outside the frame or along the board and the bottom is hollowed out; Option 2: The module placed along the PCB board side, the antenna placed along the board and the bottom of the hollow; Option 3: Place the module along the board side of the board, the antenna placed along the -T board and the bottom are not copper. Figure 4.7 ESP-12S antenna placement instructions 4.3 Module Peripheral Routing Instructions The ESP8266 series modules integrates high-speed GPIO and peripheral interfaces, which can cause severe switching noise. If some applications require high power and EMI characteristics, it is recommended to connect 10 to 100 ohms in series on digital I/O lines. This can suppress overshoot when switching power Ai supplies and make the signal smooth. Series resistance can also prevent electrostatic discharge (ESD) to some extent. Copyright © 2017 Shenzhen Ai-Thinker Technology Co., Ltd All Rights Reserved Page 14 of 23 ESP-01/07/12 Series Modules User's Manual V1.4 ink er 4.4 GPIO Level Conversion Figure 4.8 Transistor level conversion -T 4.5 Power Supply Reference Design Figure 4.9 Power supply reference Ai 4.6 ADC Supply Reference Design Figure 4.10 ADC supply reference Copyright © 2017 Shenzhen Ai-Thinker Technology Co., Ltd All Rights Reserved Page 15 of 23 ESP-01/07/12 Series Modules User's Manual V1.4 ink er 4.7 Automatically Download Reference Design Figure 4.11 Automatically Download Reference Design Ai -T 4.8 Reflow oven temperature curve Figure 4.12 Reflow furnace temperature curve Copyright © 2017 Shenzhen Ai-Thinker Technology Co., Ltd All Rights Reserved Page 16 of 23 ESP-01/07/12 Series Modules User's Manual V1.4 5 Usage Guide ink er ESP8266 series module factory default built-in AT firmware, and the default baud rate of 115200, can refer to 4.1 typical application diagram to build the minimum system circuit, then the AT command operation. Serial and network debugging tools download: http://wiki.ai-thinker.com/tools 5.1 Introduction To The Basic AT Command This chapter only describes the common AT commands, please refer to http://wiki.aithinker.com/esp8266/docs#at 5.1.1 AT parameters Description Example No Test AT is OK AT OK -T 5.1.2 AT+GMR parameters Description Example No Returns the firmware version information AT+GMR AT version:1.2.0.0(Jul 1 2016 20:04:45) SDK version:1.5.4.1(39cb9a32) Ai-Thinker Technology Co. Ltd. Dec 2 2016 14:21:16 OK 5.1.3 AT+RST No soft restart module AT+RST Ai parameters Description Example OK Copyright © 2017 Shenzhen Ai-Thinker Technology Co., Ltd All Rights Reserved Page 17 of 23 ESP-01/07/12 Series Modules User's Manual V1.4 5.1.4 AT+RESTORE No Reset the module to factory settings AT+RESTORE Example OK 5.2 Use Examples ink er parameters Description This section explains how to configure two modules through the serial port on the PC side to communicate with each other over TCP/UDP. For more examples, please refer to: http://wiki.ai-thinker.com/esp8266/examples/at_demo. Test, through the PC side instead of one end of the module to establish the appropriate connection. 5.2.1 TCP Communication Test TCP Server is in AP mode and TCP Client is Station mode. -T TCP Server Configuration Ai-Thinker Technology Co. Ltd. ready AT+CWMODE=2 //configured for AP mode OK AT+CWSAP_DEF="TCP_Server","12345678",5,4 information Ai OK AT+CIFSR //Configure AP //Query the local IP address +CIFSR:APIP,"192.168.4.1" +CIFSR:APMAC,"a2:20:a6:19:c7:0a" OK AT+CIPMUX=1 //open multiple links Copyright © 2017 Shenzhen Ai-Thinker Technology Co., Ltd All Rights Reserved Page 18 of 23 ESP-01/07/12 Series Modules User's Manual V1.4 OK 0,CONNECT //There is a client connected to the server +IPD,0,10:Ai-Thinker AT+CIPSERVER=0 OK 0,CLOSED //open the server ink er OK AT+CIPSERVER=1 //received 10 data (Ai-Thinker) //Close the server //TCP connection is off TCP Client Configuration Ai-Thinker Technology Co. Ltd. ready AT+CWMODE=1 //configured for station mode //Connect to AP -T OK AT+CWJAP_DEF="TCP_Server","12345678" WIFI CONNECTED WIFI GOT IP OK AT+CIFSR //Query the local IP address +CIFSR:STAIP,"192.168.4.2" +CIFSR:STAMAC,"5c:cf:7f:91:8b:3b" //open single link Ai OK AT+CIPMUX=0 OK AT+CIPSTART="TCP","192.168.4.1",333 //Connect to TCP server CONNECT OK AT+CIPSEND=10 //send 10 bytes of data to the server side Copyright © 2017 Shenzhen Ai-Thinker Technology Co., Ltd All Rights Reserved Page 19 of 23 ESP-01/07/12 Series Modules User's Manual V1.4 SEND OK CLOSED ink er OK //After the emergence of the symbol serial port to send Ai-Thinker (without carriage return line) Recv 10 bytes //The serial port receives the data //sent successfully //TCP connection is closed 5.2.2 UDP Communication Test One is in AP mode , the local port is 8001, and the other is Station mode. the local port is 8002. AP Configuration Ai-Thinker Technology Co. Ltd. ready AT+CWMODE=2 //configured for AP mode -T OK AT+CWSAP_DEF="TCP_Server","12345678",5,4 OK AT+CIFSR //AP information //Query the local IP address +CIFSR:APIP,"192.168.4.1" +CIFSR:APMAC,"a2:20:a6:19:c7:0a" OK AT+CIPSTART="UDP","192.168.4.2",8002,8001,0 connection //Open UDP Ai CONNECT OK +IPD,10:Ai-Thinker //received 10 data (Ai-Thinker) AT+CIPSEND=10 //send 10 bytes of data to the server OK Copyright © 2017 Shenzhen Ai-Thinker Technology Co., Ltd All Rights Reserved Page 20 of 23 ESP-01/07/12 Series Modules User's Manual V1.4 SEND OK AT+CIPCLOSE ink er //After the emergence of the symbol serial port to send Ai-Thinker (without carriage return line) Recv 10 bytes //The serial port receives the data //close the UDP connection CLOSED OK Station Configuration Ai-Thinker Technology Co. Ltd. ready AT+CWMODE=2 //configured for station mode OK AT+CWSAP_DEF="TCP_Server","12345678",5,4 //Query the local IP address -T OK AT+CIFSR //Connect to AP +CIFSR:STAIP,"192.168.4.2" +CIFSR:STAMAC,"5c:cf:7f:91:8b:3b" OK AT+CIPSTART="UDP","192.168.4.1",8001,8002,0 //Open UDP connection CONNECT OK AT+CIPSEND=10 //send 10 bytes of data to the server Ai OK //After the emergence of the symbol serial port to send Ai-Thinker (without carriage return line) Recv 10 bytes //The serial port receives the data SEND OK Copyright © 2017 Shenzhen Ai-Thinker Technology Co., Ltd All Rights Reserved Page 21 of 23 ESP-01/07/12 Series Modules User's Manual V1.4 CLOSED OK 6 FAQ ink er +IPD,10:Ai-Thinker //received 10 data (Ai-Thinker) AT+CIPCLOSE //close the UDP connection 6.1 Garbage Instructions When Power Is On ESP8266 chip itself supports 26MHz and 40MHz crystal, if the use of 40MHz crystal, the default baud rate of 115200, if the use of 26MHz crystal, the UART0 power after the baud rate = 26 * 115200/40 = 74880, the letter can be ESP8266 Series modules are used 26MHz, because the general serial port tool does not support the baud rate, so there will be printed on the garbled. You can use the security serial interface assistant to configure the baud rate 74880 to view the startup information. -T Note: part of the USB to TTL does not support 74880 baud rate, the computer comes with RS232 to TTL does not support 74880 baud rate, recommend the use of FT232, CP2102, CH340 and other chips. 6.2 How To Shield The Power When The Garbled U0TXD default power will be system printing, through the UART's internal pin switching function, user_init () call system_uart_swap () function, the new U0TXD change to GPIO15, U0RXD change to GPIO13, the hardware connection on the two cited Feet can be serial communication. Note: After the exchange, the download pin on the hardware is still the original Ai U0TXD and U0RXD. 6.3 Can’t Burn Normally Refer to http://wiki.ai-thinker.com/esp_download to download, pay attention to download before the module to ensure that the download mode. Copyright © 2017 Shenzhen Ai-Thinker Technology Co., Ltd All Rights Reserved Page 22 of 23 ESP-01/07/12 Series Modules User's Manual V1.4 6.4 SDK Development Environment ink er Refer to http://wiki.ai-thinker.com/ai_ide_install to build the SDK development environment. 6.5 Startup Information Description Start, if the power and serial port connection is normal, then the baud rate 74880 to see the first sentence is as follows: ets Jan 8 2013,rst cause:1, boot mode:(3,6) The start and start modes of the module can be analyzed based on the print information: rst cause 1: Power restart 2: External reset 4: Hardware watchdog reset -T boot mode The second in parentheses has no practical meaning, the first can refer to the following table to start the information analysis: Table 6.1 Startup Mode Description Mode Download Mode Run mode Ai Value GPIO0 GPIO2 GPIO15 7 Module Selection model ESP-01 Package DIP-8 ESP-01S ESP-01M ESP-07 DIP-8 ESP-07S ESP-12F ESP-12S SMD-18 SMD-16 SMD-16 SMD-22 SMD-16 Copyright © 2017 Shenzhen Ai-Thinker Technology Co., Ltd All Rights Reserved Page 23 of 23 ESP-01/07/12 Series Modules User's Manual V1.4 Size(mm) 24.7*14.4 24.7*14.4 Flash size 8Mbit 8Mbit Certificati on Antenna PCB PCB Indicator TXD0 light POWER Available IO 21.2*16.0 17.0*16.0 24.0*16.0 24.0*16.0 8Mbit 8Mbit 32Mbit 32Mbit 32Mbit FCC/CE FCC/CE FCC/CE PCB Ceramic IPEX IPEX PCB PCB GPIO2 GPIO2 POWER GPIO2 GPIO2 GPIO2 11 ink er layer 18*18 For more selection information please see http://wiki.ai-thinker.com/esp8266 or Ai -T contact us. Copyright © 2017 Shenzhen Ai-Thinker Technology Co., Ltd All Rights Reserved Page 24 of 23 ESP-01/07/12 Series Modules User's Manual V1.4 8 Contact US ink er Official website: https://www.ai-thinker.com Develop Wiki: http://wiki.ai-thinker.com Official forum: http://bbs.ai-thinker.com Sample purchase: https://anxinke.taobao.com Business cooperation: sales@aithinker.com Technical support: support@aithinker.com Telephone: 0755-29162996 Company Address: 6/F, Block C2, Huafeng Industrial Park, Hangcheng Road, -T Bao'an Road, Baoan District, Shenzhen ,China Ai WeChat Copyright © 2017 Shenzhen Ai-Thinker Technology Co., Ltd All Rights Reserved AiSmart APP Page 25 of 23
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