USR IOT USR-WIFI232-T User Manual
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USR IOT USR-WIFI232-T User Manual

USR IOT USR-WIFI232-T User Manual

Low power wifi module
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Low Power WiFi Module User Manual
Overview of Characteristic
Support IEEE802.11b/g/n Wireless Standards
Based on Self-developed High Cost Effective MCU
Ultra-Low-Power for Battery Applications with Excellent Power Save
Scheme
Support UART/PWM/GPIO Data Communication Interface
Support Work As STA/AP/AP+STA Mode
Support Smart Link Function (APP program provide)
Support Wireless and Remote Firmware Upgrade Function
support WPS Function
Support Multi-TCP Link (5 Channel) Apllication
Support Dial Switch Power Control
Support External IPEX or Pad Interface Antenna Option
Single +3.3V Power Supply
Smallest Size: 22mm x 13.5mm x 6mm, 1x10 2mm Connector
FCC/CE Certificated
Jinan USR IOT Technology Limited
Low power WIFI module user manual
V 1.3
Page 1/72
http://en.usr.cn
tec@usr.cn

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Summary of Contents for USR IOT USR-WIFI232-T

  • Page 1 Support Dial Switch Power Control  Support External IPEX or Pad Interface Antenna Option  Single +3.3V Power Supply  Smallest Size: 22mm x 13.5mm x 6mm, 1x10 2mm Connector  FCC/CE Certificated Jinan USR IOT Technology Limited Page 1/72 tec@usr.cn...

  • Page 2: Table Of Contents

    3.1.2. SYSTEM PAGE ..........................28 3.1.3. WORK MODE PAGE ........................28 3.1.4. STA SETTING PAGE ........................ 29 3.1.5. AP SETTING PAGE ........................29 3.1.6. OTHER SETTING PAGE ......................30 3.1.7. ACCOUNT MANAGEMENT PAGE ....................31 Jinan USR IOT Technology Limited Page 2/72 tec@usr.cn...
  • Page 3 3.1.8. UPGRADE SOFTWARE PAGE ....................31 3.1.9. RESTART PAGE ......................... 31 3.1.10. RESTORE PAGE ........................32 3.2. USR-WIFI232-T USAGE INTRODUCTION ................... 33 3.2.1. SOFTWARE DEBUG TOOLS ...................... 33 3.2.2. NETWORK CONNECTION ......................33 3.2.3. DEFAULT PARAMETER SETTING ..................33 3.2.4.
  • Page 4 4.2.2.63. AT+WRMID ..........................59 4.2.2.64. AT+RLDEN ..........................59 4.2.2.65. AT+ASWD ..........................60 4.2.2.66. AT+MDCH ..........................60 4.2.2.67. AT+TXPWR ..........................60 4.2.2.68. AT+LPTIO ..........................61 5. PACKAGE INFORMATION ........................62 5.1. RECOMMENDED REFLOW PROFILE ....................62 Jinan USR IOT Technology Limited Page 4/72 tec@usr.cn...

  • Page 5: List Of Tables

    C.1.2. AT+ HTTPTP ..........................71 C.1.3. AT+ HTTPPH ..........................71 C.1.4. AT+ HTTPCN ..........................72 C.1.5. AT+ HTTPUA ..........................72 C.1.6. AT+ HTTPDT ..........................72 C.2. HTTP EXAMPLE ........................... 72 APPENDIX D: CONTACT INFORMATION ....................74 Jinan USR IOT Technology Limited Page 5/72 tec@usr.cn...

  • Page 6: List Of Figures

    Figure 4. USR-WIFI232-T Evaluation Kit ..................16 Figure 5. USR-WIFI232-T Hardware Typical Application ........... 17 Figure 6. USR-WIFI232-T Smart LED Application Hardware Connection ....18 Figure 7. USR-WIFI232-T Basic Wireless Network Structure .......... 20 Figure 8. AP+STA Network Structure ....................21 Figure 9.
  • Page 7 Power Supply & Power Consumption ............... 13 Table 5 USR-WIFI232-T External Antenna Parameters ..........15 Table 6 USR-WIFI232-T Evaluation Kit Interface Description ......15 Table 7 USR-WIFI232-T GPIO/PWM Pin Mapping Table ........... 23 Table 8 USR-WIFI232-T Web Access Default Setting ........... 25 Table 9 Error Code Describtion ....................

  • Page 8: History

    10-12-2013 Update AT command. Update PWM/GPIO function. Add HTTP protocol demo. Add auto-frame function. Ed. V1.3 10-18-2013 Add nReload Pin wireless upgrade and config description, add nLink Pin wireless upgrade indication description. Jinan USR IOT Technology Limited Page 8/72 tec@usr.cn...

  • Page 9: Product Overview

    1. PRODUCT OVERVIEW 1.1. General Description The USR-WIFI232-T is a fully self-contained small form-factor, single stream, 802.11b/g/n Wi-Fi module, which provide a wireless interface to any equipment with a Serial/SPI/USB interface for data transfer.USR-WIFI232-T integrate MAC, baseband processor, RF transceiver with power amplifier in...

  • Page 10: 1.1.2 Device Parameters

    Low power WIFI module user manual http://en.usr.cn 1.1.2 Device Parameters Table 1 USR-WIFI232-T Module Technical Specifications Class Item Parameters Certification FCC/CE Wireless standard 802.11 b/g/n Frequency range 2.412GHz-2.484GHz 802.11b: +16 +/-2dBm (@11Mbps) 802.11g: +14 +/-2dBm (@54Mbps) Transmit Power Wireless 802.11n: +13 +/-2dBm (@HT20,...
  • Page 11 Low power WIFI module user manual http://en.usr.cn  Security  Industrial sensors and controls  Home automation  Medical devices Jinan USR IOT Technology Limited Page 11/72 tec@usr.cn...

  • Page 12: Hardware Introduction

    When this pin is set to “low” during module boot up, the module will enter wireless firmware and config upgrade mode. This mode is used for customer manufacture. (USR Technology will provide software tools for customer batch configuration and upgrade firmware during mass production) Jinan USR IOT Technology Limited Page 12/72 tec@usr.cn...

  • Page 13: Electrical Characteristics

    Typ. Max. Unit Operating Supply voltage Supply current, peak Continuous Tx Supply current, IEEE PS DTIM=100ms Output high voltage Sourcing 6mA Output low voltage Sinking 6mA Input high voltage Input low voltage Jinan USR IOT Technology Limited Page 13/72 tec@usr.cn...

  • Page 14: Mechanical Size

    Low power WIFI module user manual http://en.usr.cn 1.2.3. Mechanical Size USR-WIFI232-T modules physical size （Unit: mm） as follows: Figure 2. USR-WIFI232-T Mechanical Dimension 1.2.4. External Antenna USR-WIFI232-T supports two way of external antenna as the following picture show, The IPEX interface or the PAD interface. The user may choose one of them.

  • Page 15: Evaluation Kit

    USR Technology provides the evaluation kit to promote user to familiar the product and develop the detailed application. The evaluation kit shown as below, user can connect to USR-WIFI232-T module with the RS-232 UART, manage the module or do the some functional tests. The EVK support 5V DC power supply.

  • Page 16: Typical Application

    Low power WIFI module user manual http://en.usr.cn 1.3. Typical Application 1.3.1. Hardware Typical Application Figure 5. USR-WIFI232-T Hardware Typical Application 1.3.2. Smart LED Application Hardware Typical Connection Figure 6. USR-WIFI232-T Smart LED Application Hardware Connection Notes: Jinan USR IOT Technology Limited Page 16/72 tec@usr.cn...
  • Page 17 When module connects to AP (AP associated), this pin will output “0”. This signal used to judge if module already at WiFi connection status. Thers is pull-up resister internal and no external pull-up required. If nLink function not required, can leave this pin open. Jinan USR IOT Technology Limited Page 17/72 tec@usr.cn...

  • Page 18: Functional Description

    USR-WIFI232-T module can be configured as both wireless STA and AP base on network type. Logically there are two interfaces in USR-WIFI232-T. One is for STA, and another is for AP. When USR-WIFI232-T works as AP, other STA equipments are able to connect to wireless LAN via USR-WIFI232-T module.

  • Page 19: Work Mode : Transparent Transmission Mode

    2.2. Work Mode : Transparent Transmission Mode USR-WIFI232-T module support serial interface transparent transmission mode. The benefit of this mode is achieves a plug and play serial data port, and reduces user complexity furthest. In this mode, user should only configure the necessary parameters.

  • Page 20: Uart Frame Scheme

    UART data. If this interval time exceeds defined value (50ms default), USR-WIFI232-T will think it as the end of one frame and transfer this free-frame to WiFi port, or USR-WIFI232-T will receive UART data until 1000 bytes, then transfer 1000 bytes frame to WiFi port.

  • Page 21: Parameters Configuration

    Webpaged based Wi-Fi upgrade,please refer to 3.1.8 firmware upgrade page , user can upload firmware file from PC to USR-WIFI232-T. USR-WIFI232-T module also support upgrade from remote HTTP server, keep module connects to AP router before excuate remote HTTP upgrade. Remote upgrade have two methods: Direct Download and Upgrade, Configure File Based Upgrade.
  • Page 22 After excuate this command, the module will directly download the “lpb.bin” file from remote directory and start upgrade Application. Notes: please contact with USR Technology technical people before upgrade firmware, or maybe damage the module and can’t work again. Jinan USR IOT Technology Limited Page 22/72 tec@usr.cn...

  • Page 23: Gpio/Pwm Function

    Notes: Please refer to Appendix B for details to use GPIO/PWM. 2.8. SOCKET B Function USR-WIFI232-T support double socket communication, the socket B function is disabled by default. After the module is started, send command “AT+SOCKB” to set the connection parameter, send command “AT+TCPDISB=on”...

  • Page 24: Multi-Tcp Link Connection

    Multi-TCP Link Connection When USR-WIFI232-T module configured as TCP Server, it supports Multi-TCP link connection, and maximum 5 TCP clients permit to connect to USR-WIFI232-T module. User can realize multi-TCP link connection at each work mode. Multi-TCP link connection will work as following structure: Upstream: All dates from different TCP connection or client will be transmitted to the serial port as a sequence.

  • Page 25: Operation Guideline

    Password Admin 3.1.1. Open Web Management Interface Step 1: Connect laptop to SSID “USR-WIFI232-T” of USR-WIFI232-T module via wireless LAN card; Step 2: After wireless connection OK. Open Wen browser and access “http://10.10.100.254”; Step 3: Then input user name and password in the page as following and click “OK”...

  • Page 26: System Page

    3.1.3. Work Mode Page USR-WIFI232-T module can works at AP mode to simplify user’s configuration, can also works at STA to connect remote server through AP router. Also, it can configure at AP+STA mode which provide very flexible application for customers.

  • Page 27: Sta Setting Page

    When user select module works at AP and AP+STA mode, then need setting this page and provide wireless and network parameters. Most of the system support DHCP to achieve IP address, so we suggest to “Enable” DHCP server in most applications. Jinan USR IOT Technology Limited Page 27/72 tec@usr.cn...

  • Page 28: Other Setting Page

    Other Setting Page USR-WIFI232-T usually works at data transparent transmission mode. At this mode, the user device which connected with USR-WIFI232-T will connect and communicate with remote PC or server. At this page, user need setting serial port communication parameters and defines TCP related protocal parameters.

  • Page 29: Account Management Page

    User can upgrade new software (firmware) version through Wi-Fi. Figure 18. Upgrade SW page 3.1.9. Restart Page Most of the settting and configuration can only effective after system restart. User shall restart after finish all setting. Jinan USR IOT Technology Limited Page 29/72 tec@usr.cn...

  • Page 30: 3.1.10. Restore Page

    After module restore factory default setting, all user configuration profile will lose. User can access http://10.10.100.254 to set again, and user name and password is “admin”. USR-WIFI232-T will restore to AP mode for factory default setting. Figure 20. Restore Page Jinan USR IOT Technology Limited Page 30/72...

  • Page 31: Usr-Wifi232-T Usage Introduction

     Ethernet Debugging Software: TCPUDPDbg 3.2.2. Network Connection User can select two methods to connect USR-WIFI232-T module base on dedicated application.  Use USR-WIFI232-T STA interface. USR-WIFI232-T and debug PC2 connect to a wireless AP, another PC1 (or user device) connect to USR- WIFI232-T module with serial port: Figure 21.

  • Page 32: Module Debug

    USR-WIFI232-T module and open serial port connection. Figure 23. “CommTools” Serial Debug Tools PC2 open “TCPUDPDbg” program, and create a new connection. If USR-WIFI232-T configured as Server mode, “TCPUDPDbg” Tools shall create “Client “mode connection. Or otherwise, create a “Server” mode connection.

  • Page 33: Typical Application Examples

    Wireless Control Application Figure 27. Wireless Control Application For this wireless control application, USR-WIFI232-T works as Ad-Hoc mode. Module’s serial port connects to user device. So, control agent (Smart phone for this example) can manage and control the user device through the wireless connection with USR-WIFI232-T module.

  • Page 34: Remote Management Application

    Remote Management Application Figure 28. Remote Management Application For this remote management application, USR-WIFI232-T works as STA mode and connects to Internet through wireless AP. Module configured as TCP Client and communicates with remote TCP server at Internet. Module’s serial port connects to user device.

  • Page 35: At+Instruction Introduction

    4. AT+INSTRUCTION INTRODUCTION 4.1. Configuration Mode When USR-WIFI232-T power up, it will default works as transparent transmission mode, then user can switch to configuration mode by serial port command. USR-WIFI232-T UART default parameters setting as below figure, Figure 30. USR-WIFI232-T Default UART Port Parameters In configuration mode, user can setting the module through AT+ instruction set, which cover all web page setting function.

  • Page 36: At+ Instruction Set Overview

    “=” : The command requires parameters input;  “NULL”: Query the current command parameters setting;  [para-n]: Parameters input for setting if required;  <CR>:”Enter” Key, it’s 0x0a or 0x0d in ASCII; Jinan USR IOT Technology Limited Page 36/72 tec@usr.cn...

  • Page 37: At+ Instruction Set

    Query module software version information RELD Restore to factory default setting FCLR Erase factory setting Re-start module Help Configure Parameters Instruction Set CFGRD Batch Read User Configure Parameters CFGWR Batch Write Configure Parameters Jinan USR IOT Technology Limited Page 37/72 tec@usr.cn...
  • Page 38 WADMN Set/Query AP webpage domain name Webpage Management Instruction Set PLANG Set/Query Webpage Language Option WEBU Set/Query Webpage User name and Code Remote Upgrade Instruction Set UPURL Set/Query remote upgrade URL address Jinan USR IOT Technology Limited Page 38/72 tec@usr.cn...

  • Page 39: At+E

     Format: AT+E<CR> +ok<CR>< LF ><CR>< LF > When USR-WIFI232-T module firstly switch from transparent transmission to configuration mode, show back status is open, input “AT+E” to close show back function, input“AT+E” again to open show back function. 4.2.2.2. AT+WMODE ...

  • Page 40: At+Entm

    Notes: User can set this parameter through AT+WRMID. 4.2.2.6. AT+VER  Function: Query module software version information;  Format:  Query Operation AT+VER<CR> +ok=<ver><CR>< LF ><CR>< LF >  Parameters:  ver: Module software version information; Jinan USR IOT Technology Limited Page 40/72 tec@usr.cn...

  • Page 41: At+Reld

    +ok=<config><CR>< LF ><CR>< LF >  Parameters:  config: the first two bytes means the length of configuration parameters; 4.2.2.12. AT+CFGWR  Function: Batch Write User Configure Parameters;  Format:  Set Operation Jinan USR IOT Technology Limited Page 41/72 tec@usr.cn...

  • Page 42: At+Cfgfr

    Query Operation AT+UART<CR> +ok=<baudrate,data_bits,stop_bit,parity><CR>< LF ><CR>< LF >  Set Operation AT+UART=<baudrate,data_bits,stop_bit,parity><CR> +ok<CR>< LF ><CR>< LF >  Parameters:  baudrate:  300,600,1200,1800,2400,4800,9600,19200,38400,57600,115200, 230400, 380400,460800.  data_bits:   stop_bits:   parity: Jinan USR IOT Technology Limited Page 42/72 tec@usr.cn...

  • Page 43: At+ Uartf

    Query Operation AT+ UARTFL<CR> +ok=<len><CR>< LF ><CR>< LF >  Set Operation AT+ UARTFL=<len ><CR> +ok<CR>< LF ><CR>< LF >  Parameters:  len: Range 8 ~1000; Unit: Byte. Auto-frame trigger length; Jinan USR IOT Technology Limited Page 43/72 tec@usr.cn...

  • Page 44: At+ Uartte

    If not receive any data in 3 second, then feedback +ok=0. 4.2.2.22. AT+ PING  Function: Network “PING” Instruction.  Format:  Set Operation AT+ PING=<IP_address ><CR> +ok=<sta><CR>< LF ><CR>< LF >  Parameters:  sta: feedback result Jinan USR IOT Technology Limited Page 44/72 tec@usr.cn...

  • Page 45: At+Netp

     num: TCP Client connection number. Range: 1~5. 5 is the default value it means when the module work in TCP server , it accepts max 5 TCP client connect to it. Jinan USR IOT Technology Limited Page 45/72 tec@usr.cn...

  • Page 46: At+ Tcplk

    When setting, “off” means close TCP link. After finish this command, module disconnect TCP link and not connect again. “On” means open TCP link. After finish this command, module re-connect TCP server right away. Jinan USR IOT Technology Limited Page 46/72 tec@usr.cn...

  • Page 47: At+Sockb

    AT+ TCPTOB<CR> +ok=<time><CR>< LF ><CR>< LF >  Set Operation AT+ TCPTOB=<time ><CR> +ok<CR>< LF ><CR>< LF >  Parameters  Time: TCP timeout  <= 600:600s  >=0:0 means no timeout Jinan USR IOT Technology Limited Page 47/72 tec@usr.cn...

  • Page 48: At+Tcplkb

    If not receive any data in 3 second, then feedback +ok=0. 4.2.2.34. AT+WSSSID  Function: Set/Query Wi-Fi associated AP SSID parameters.  Format:  Query Operation AT+WSSSID<CR> +ok=<ap’s ssid><CR>< LF ><CR>< LF >  Set Operation AT+ WSSSID=<ap’s ssid ><CR> Jinan USR IOT Technology Limited Page 48/72 tec@usr.cn...

  • Page 49: At+Wskey

    +ok<CR>< LF ><CR>< LF >  Parameters:  mode: STA’s IP network setting  static: Static IP  DHCP: Dynamic IP  address: STA IP address;  mask: STA subnet mask;  gateway: STA gateway address; Jinan USR IOT Technology Limited Page 49/72 tec@usr.cn...

  • Page 50: At+ Wsmac

    ”Disconnected”, if no WiFi connection;  ”AP’s WiFi signal strength” , if WiFi connection available; 4.2.2.40. AT+WSCAN  Function: Scan AP;  Format: AT+ WSCAN<CR> +ok=<ap_site><CR>< LF ><CR>< LF >  Parameters: Jinan USR IOT Technology Limited Page 50/72 tec@usr.cn...

  • Page 51: At+ Wsdns

    AT+ WAP =<wifi_mode,ssid,channel><CR> +ok<CR>< LF ><CR>< LF >  Parameters:  wifi_mode: Wi-Fi mode, include:   11BG  11BGN (Default Value)  ssid:SSID at AP mode  channel: Wi-Fi channel selection:  AUTO Jinan USR IOT Technology Limited Page 51/72 tec@usr.cn...

  • Page 52: At+Wakey

    Function: Set/Query AP DHCP server status;  Format:  Query Operation AT+WADHCP<CR> +ok=<status><CR>< LF ><CR>< LF >  Set Operation AT+ WADHCP=<status><CR> +ok<CR>< LF ><CR>< LF >  Parameters:  status:AP’s DHCP server function status: Jinan USR IOT Technology Limited Page 52/72 tec@usr.cn...

  • Page 53: At+Wadmn

    “/” (within 20 characters).  filename: the upgrade file name, it’s optional and not saved parameter. If provide this file name here, the module will start upgrade right away; Jinan USR IOT Technology Limited Page 53/72 tec@usr.cn...

  • Page 54: At+Upfile

    +ok=<log><CR>< LF ><CR>< LF >  Parameters:  log: Some status print log from remote upgrade. Note: After execute this command, the USR-WIFI232-T will automatic start upgrade base on the setting of UPURL, UPFILE command contents; 4.2.2.53. AT+UPNVR  Function: Remote NVRAM data upgrade ...

  • Page 55: At+Upauto

     Parameters:  log: Some status print log from remote upgrade. Note: After execute this command, the USR-WIFI232-T will automatic start upgrade Application, Webpage, factory setting base on the setting of UPURL, UPFILE command contents; 4.2.2.55. AT+LOGSW  Function: Open/Close remote upgrade logfile ...

  • Page 56: At+Webu

     Parameters:  log: feedback the status of remote upgrade; Note: After execute this command, the USR-WIFI232-T will automatic start upgrade base on setting of UPURL, UPFILE command contents; 4.2.2.58. AT+WEBU  Function: Set/ Query webpage user name and password;...

  • Page 57: At+Ntpen

    Parameters: wrmid: set module’s ID (within 20 characters).  4.2.2.64. AT+RLDEN  Function: Set/Query GPIO45 function status  Format:  Query Operation AT+RLDEN<CR> +ok=<status><CR>< LF ><CR>< LF >  Set Operation AT+RLDEN=<status><CR> Jinan USR IOT Technology Limited Page 57/72 tec@usr.cn...

  • Page 58: At+Aswd

    Function: Set/Query Wi-Fi Transmit Power, Real Transmit Power=Default Transmit Power(16dBm) – [Setting Value] * 0.5dBm  Format:  Query Operation AT+TXPWR <CR> +ok=<num><CR>< LF><CR>< LF>  Set Operation AT+TXPWR=<num><CR> +ok<CR>< LF><CR>< LF> Jinan USR IOT Technology Limited Page 58/72 tec@usr.cn...

  • Page 59: At+Lptio

    Set Operation AT+LPTIO=<status><CR> +ok<CR>< LF><CR>< LF>  Parameters： staus: Enable/Disable nReady、nLink function. PWM_1 pin is for  nLink function, PWM_2 pin is for nReady function.  on：Enable nReady、nLink function  off：Disable nReady、nLink function Jinan USR IOT Technology Limited Page 59/72 tec@usr.cn...

  • Page 60: Package Information

    Case 1: Wifi module mounted on top side. Need to bake when bottom side process over 168 hours window time, no need to bake within 168 hours Case 2: Wifi module mounted on bottom side, follow normal bake rule before process Jinan USR IOT Technology Limited Page 60/72 tec@usr.cn...

  • Page 61: Shipping Information

    168 hours space. 5.3. Shipping Information TRAY Size: 420*245*34 mm Size: 422*247*72 mm (inside) Note: 1 tray = 5*20pcs = 100 pcs 1 box = 2 trays = 2 * 100 pcs = 200pcs Jinan USR IOT Technology Limited Page 61/72 tec@usr.cn...

  • Page 62: Appendix A: Hw Reference Design

    Low power WIFI module user manual http://en.usr.cn APPENDIX A: HW REFERENCE DESIGN Jinan USR IOT Technology Limited Page 62/72 tec@usr.cn...
  • Page 63 Low power WIFI module user manual http://en.usr.cn Detailed USR-WIFI232-T Evaluation Board design source files, pls access USR Technology web download page or contact with USR Technology technical support people to acquire. Jinan USR IOT Technology Limited Page 63/72 tec@usr.cn...

  • Page 64: Appendix B: Control Gpio/Pwm Function With Network Commands

    GPIO OK: Command successful  GPIO NOK: Command failed B.1.2 GPIO <channel> GET  Function: Query GPIO Channel value  Parameters:  channel: GPIO Channel number,it can be 11、12、18(GPIO Pin Number )  Return Data: Jinan USR IOT Technology Limited Page 64/72 tec@usr.cn...
  • Page 65 Channel number, it can be 11、12、18(GPIO Pin Number )  frequency:PWM Channel frequency, it can be 500~60000  duty:PWM Channel duty, it can be 0~100.  Return Data:  PWM OK: Command successful  PWM NOK: Command failed Jinan USR IOT Technology Limited Page 65/72 tec@usr.cn...
  • Page 66  Parameters:  channel: PWM Channel number,it can be 11、12、18(GPIO Pin Number )  Return Data:  +ok=<frequency duty>  frequency:PWM Channel frequency  duty:PWM Channel duty  PWM NOK: Command failed Jinan USR IOT Technology Limited Page 66/72 tec@usr.cn...

  • Page 67: Hexadecimal Network Command

    Return Data:【a0 <value1 value2 value3 value4>】  value1: Duty of PWM Channel 0  value2: Duty of PWM Channel 1  value3: Duty of PWM Channel 2  value4: Not used. B.2.4 Write PWM Channel Duty Jinan USR IOT Technology Limited Page 67/72 tec@usr.cn...
  • Page 68 B.2.6 Read Resources of module  Send Data:【7e】:  Return Data:【fe <value1 value2 value3>】  value1: Module’s GPIO ouput pin number .  value2:Module’s GPIO input pin number  value3:Module’s PWM pin number Jinan USR IOT Technology Limited Page 68/72 tec@usr.cn...

  • Page 69: Appendix C: Http Protocol Transfer

    Low power WIFI module user manual http://en.usr.cn APPENDIX C: HTTP PROTOCOL TRANSFER USR-WIFI232-T module support http data transfer in command mode. If any detailed HTTP protocol, contact us and we may support customization. C.1. HTTP AT command C.1.1. AT+ HTTPURL ...

  • Page 70: At+ Httpcn

    C.2. HTTP Example HTTP parameter settings are as follows： AT+HTTPURL=192.168.1.1,80 Set HTTP server address and port AT+HTTPTP=POST Set HTTP request type AT+HTTPPH=/abcd Set HTTP protocol header path AT+HTTPCN= keep-alive Set HTTP Connection area Jinan USR IOT Technology Limited Page 70/72 tec@usr.cn...
  • Page 71 The data received from HTTP server will be output to serial port and end with “+ok”. If the module hasn’t received data from HTTP server for 5 second, it will cut the TCP link with HTTP server. Jinan USR IOT Technology Limited Page 71/72 tec@usr.cn...

  • Page 72: Appendix D: Contact Information

    Low power WIFI module user manual http://en.usr.cn APPENDIX D: CONTACT INFORMATION Jinan USR IOT Technology Limited Address: 1-728, Huizhan Guoji Cheng, Gaoxin Qu, Jinan, Shandong, China Tel: 86-531-55507297 86-531-88826739-803 Web: http://en.usr.cn Skype: lisausr Email: sales@usr.cn tec@usr.cn END OF DOCUMENT Jinan USR IOT Technology Limited Page 72/72 tec@usr.cn...

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