RAK473 module is a Wi-Fi module that fully compliant with IEEE 802.11b/g/n wireless standards, It combines an ARM-CM3 MCU, WLAN MAC, a 1T1R capable WLAN baseband, and RF in the module. It have onboard antenna, and external antenna interface, RF output PIN also exist in the board. RAK473 internally integrated TCP / IP protocol stack, supporting numerous protocols such as ARP, IP, ICMP, TCP, UDP, DHCP CLIENT, DHCP SERVER, DNS and other etc. It supports AP mode, Station mode. It also support rich AT command for all kinds of application. Users can easily and quickly use it to wifi networking and data transmission. The baud rate of module serial port is up to 921600bps, which can fully meet the low-rate applications.

In network part, RAK473 supports storing network parameters in the module, and reduce time connect to network. The module has built-in WEB server, supporting wireless network parameters configuration, supporting wireless firmware upgrade. It also supports WPS and EasyConfig. In application part, HTTP, MQTT, MDNS and SSL also be supported.

It also provides a bunch of configurable GPIOs which are configured as SPI ,UART, I2C, I2S, PWM, for different applications and control usage. RAK473 integrates internal 2M SRAM ,and 512KB DRAM and 2MB flash for complete WIFI protocol functions. 

• UART serial AT Command set operation
• Support for multiple baud rate
• Support wireless configuration and OTA upgrade firmware
• Support the UART interface, OTW(over the wire) upgrade function
• Support for fast networking, easyconfig, WPS function
• Support MDNS, MQTT, HTTP, TLS applications
• Support TLS1.2
• Support 160KByte NVM Flash

• 802.11b/g/n compatible WLAN
• 802.11e QoS Enhancement (WMM)
• 802.11i (WPA, WPA2). Open, shared key,and pair-wise key authentication services
• WIFI WPS support
• Light Weight TCP/IP protocol

• CMOS MAC, Baseband PHY, and RF in a single chip for 802.11b/g/n compatible WLAN
• Complete 802.11n solution for 2.4GHz band
• 72.2Mbps receive PHY rate and 72.2Mbps transmit PHY rate using 20MHz bandwidth
• 150Mbps receive PHY rate and 150Mbps transmit PHY rate using 40MHz bandwidth
• Backward compatible with 802.11b/g devices while operating in 802.11n mode
• Compatible with 802.11n specification
• Frame aggregation for increased MAC efficiency (A-MSDU, A-MPDU)
• Low latency immediate High-Throughput Block Acknowledgement (HT-BA)
• Long NAV for media reservation with CF-End for NAV release
• PHY-level spoofing to enhance legacy compatibility
• Power saving mechanism

• 802.11n OFDM
• One Transmit and one Receive path (1T1R)
• 20MHz and 40MHz bandwidth transmission
• Short Guard Interval (400ns）
• DSSS with DBPSK and DQPSK, CCK modulation with long and short preamble
• OFDM with BPSK, QPSK, 16QAM, and 640QAM modulation. Convolutional Coding Rate: 1/2, 2/3,3/4, and 5/6
• Maximum data rate 54Mbps in 802.11g and 150Mbps in 802.11n
• Fast receiver Automatic Gain Control (AGC)

• Maximum 2 PCM with 8/16KHz sample rate
• Maximum 2 SPI supported with baud rate up to 41.5MHz
• Support 4 PWM with configurable duration and duty cycle from 0 ~ 100%
• Support 4 External Timer Trigger Event (ETE function) with configurable period in low power mode
• Maximum 20 GPIO pins
• A high speed UART interface with baud rate up to 4MHz

RAK473 UART command operation feature completes a few basic steps of WIFI communication, including network scanning, joining network and obtaining an IP address, and eventually establishing Socket communication. RAK473 provides a variety of convenient operation to implement networking, so that customers can easily complete the network configuration, and concentrate on the management of socket and their own data protocols.

To realize automatic networking management, customers can take advantage of WEB, WPS and EasyConfig configuration module. The module will automatically store paramenters after a successful configuration, and these automatic networking commands can be used any time, letting the module automatically complete networking operation, and returning the results.

 Host to module:
     at+<command>=<para 1>,<para 2>,................<para n>\r\n
 All at commands, including parameters, are ASICII code, such as:
     at+psk=lthonway\r\n	
     at+connect=LTHonway\r\n
1.After each command is executed, the module will send a return value, as  
the following format
2.If the command is successful, the return value
     OK\r\n or OK<para 1><para 2>.......................<para n>\r\n   
Note: In addition to OK, the other parameters are in hexadecimal, for example,
     OK\r\n      HEX=4F 4B 0D 0A----------------------------No parameters
     OK@\r\n     HEX=4F 4B 64 0D 0A--------------------------parameter =0x64
3.If the command fails, the return value
     ERROR<code>
Note:
   ERROR is the ASCII code,<code>is hexadecimal, for example,
   ERROR ?\r\n    HEX=45 52 52 4F 52 FE 0D 0A----------------<code>=oxFE

AT command syntax description: AT command begins with “at +” (all lowercase) and end with “\ r \ n”, the maximum command length is 80 bytes, all other commands beginning with any other format are wrong.

Note:The AT command syntax above does not apply to receiving and sending data commands at + recv_data and at + send_data, for detailed instructions, please refer to at + recv_data, at + send_data

Error Code:

== Pleace see the programming manual for the detailed meaning of the AT command. ==

• RAK473 UART-WIFI Module Programming Manual V1.2

• RAK473 Package&Design Reference

• RAK47X EVB Design document

  Welcome to RAK473		//Power on information
at+ascii=1			//Set ascii show 
  OK
at+psk=123456789		//Set AP Password
  OK
at+ap=RAK473_AP			//Establish AP
  OK
at+ipstatic=192.168.9.5,255.255.255.0,192.168.9.1,192.168.9.1,0 //Set static IP address
  OK
at+ipdhcp=1				//Open dhcp server
  OK
at+ltcp=25000				//Set tcp server
  OK8
  at+recv_data=connect			//Receive STA connection event
  at+recv_data=128,0,47466,192.168.9.2	//Receive client TCP connection event
  at+recv_data=0,47466,192.168.9.2,12,hello rak473	//Receive data
  at+recv_data=129,0,47466,192.168.9.2	//Receive client TCP disconnect event
  at+recv_data=disconnect		//Receive STA disconnect event

  Welcome to RAK473				//Power on information
at+ascii=1					//Set ascii show 
  OK
at+psk=123456789				//Set routing password
  OK
at+connect=rakwireless				//Connection Route
  OK
at+ipdhcp=0					//Dynamic acquisition of IP
  OK
  mac=9C:44:3D:00:06:59
  addr=192.168.31.103
  mask=255.255.255.0
  gw=192.168.31.1
  dns1=192.168.31.1
  dns2=0.0.0.0
at+ltcp=25000					//Create a server TCP
  OK8
  at+recv_data=128,0,59231,192.168.31.180	//Receive client TCP connection event
  at+recv_data=0,59231,192.168.31.180,12,hello rak473	//Receive data
  at+recv_data=129,0,59231,192.168.31.180	//Receive client TCP disconnect event

For more detailed examples, please refer to the link：WisNode-UART

• RAK473 UART WiFi Module Specification V1.4

• RAK473 UART-WIFI Module Programming Manual V1.2
• RAK47X UART WiFi Module Firmware Upgrade Manual V1.0
• RAK47X UART WiFi Module Communication RangeTest ReportV1.2
• RAK47X UART WiFi Power Consumption Connecting Time Test Report
• RAK473 Use guidance-How to set SSL Certificate
• RAK473 Use guidance-How to use MQTTS
• RAK473 Use guidance-How to use NVM
• RAK473(476) Use guidance-How to use MQTT
• RAK473(476) Use Guidance-How to use UART to upgrade
• RAK473(476) Use Guidance One-Key Configuration Router
• RAK473(476) Use Guidance Cautions to the Design of Hardware
• RAK473(476) Use Guidance Test the Power Consumption of WiFi Module

• RAK473_Nano1xx_SDK_1_0_0
• RAK473_STM32F10x_SDK_1_0_0
• RAK47X AP Config&Easy Config_V1.3.2--Android SDK
• Easyconfig Tool for Android SDK
• Easyconfig Tool for IOS SDK

• RAK473 Package&Design Reference
• RAK47X EVB Design document

• RAK473_V1.0.0.17-2.9.4OTA_TP0

• RAK47X AP Config&Easy Config_V1.3.2--Android
• RAK473 UART Config Tool_V1.8.1--PC
• BOOT Upgrade Tool_V1.1
• TCP&UDP Test tool
• UartAssist Tool

If you want to buy our products, please go to our store： RAK Store

— RAK 2016/11/07 17:15