Naresh krish
Published

Integrating LoRaWAN with AWS IoT services using the RAK811

This tutorial takes you through the intricacies of setting up your RAK811 Lora node to talk to AWS ioT via the TTN LoRaWAN network

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Integrating LoRaWAN with AWS IoT services using the RAK811

Things used in this project

Story

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Schematics

rak 811

rak 831

Code

Rak 811 arduino firwmare

Arduino
void setup() { 
//configure Serial1, this could also be a  
//software serial.  
Serial1.begin(115200); 
//configure the mail RX0 and TX0 port on arduino 
Serial.begin(115200); 
} 

//string to hold the response of a command in rak811 
String response = ""; 

//the famous arduino loop function. runs continuosly 
void loop() { 
//try getting the version of the board firmware 
 sendCommand("at+version\r\n"); 
 //set conn config 
 setConnConfig("dev_eui", "your_dev_eui_here"); 
 setConnConfig("app_eui", "your_app_eui_here"); 
 setConnConfig("app_key", "your_app_key_here"); 
 //join the connection 
 sendJoinReq(); 
 //send data too gateway 
 sendData(1,2,"000000000000007F0000000000000000"); 
 delay(3000);  
} 

/** 
* Function to send a command to the  
* lora node and wait for a response 
*/ 

void sendCommand(String atComm){ 
response = ""; 
Serial1.print(atComm); 
 while(Serial1.available()){ 
   char ch = Serial1.read(); 
   response += ch; 
 } 
 Serial.println(response); 
} 




/** 
* send the rak811 to sleep for time  
* specified in millis paramteer 
*/ 

void sleep(unsigned long milliseconds){ 
 sendCommand("at+sleep\r\n"); 
 delay(milliseconds); 
 //send any charcater to wakeup; 
 sendCommand("***\r\n"); 
} 



/** 
* reset board after the specified time delay millisenconds 
* <mode> = 0 Reset and restart module 
= 1 Reset LoRaWAN or LoraP2P stack and Module will reload LoRa 
configuration from EEPROM 
*/ 

void resetChip(int mode, unsigned long delaySec=0){ 
 delay(delaySec); 
 String command = (String)"at+reset=" + mode + (String)"\r\n"; 
 sendCommand(command); 
} 


/** 
* Reload the default parameters of LoraWAN or LoraP2P setting 
*/ 

void reload(unsigned long delaySec){ 
 delay(delaySec); 
 sendCommand("at+reload\r\n"); 
} 


/** 
* Function to set module mode 
* <mode> = 0 LoraWAN Mode (default mode) 
= 1 LoraP2P Mode 
*/ 
void setMode(int mode){ 
 String command = (String)"at+mode=" + mode + (String)"\r\n"; 
 sendCommand(command);   
} 



/** 
* Function to send data to a lora gateway; 
* <type> = 0 send unconfirmed packets 
= 1 send confirmed packets 
<port> = 1-223 port number from 1 to 223 
<data>= <hex value> hex value(no space). The Maximum length of <data> 64 bytes 
*/ 

void sendData(int type, int port, String data){ 
 String command = (String)"at+send=" + type + "," + port + "," + data + (String)"\r\n"; 
 sendCommand(command); 
} 


/** 
* Function to send a join request 
* allowed methods "otaa" and "abp" 
*/ 

void sendJoinReq(String method){ 
 String command = (String)"at+join=" + method + "\r\n"; 
 sendCommand(command); 
} 

/** 
* Function to set the connection config 
* < dev_addr >:<address> 
<address>-------------------4 bytes hex number representing the 
device address from 00000001FFFFFFFE 
<dev_eui>:<eui> 
<eui>-------------------------- 8-byte hexadecimal number 
representing the device EUI 
<app_eui>:<eui> 
<eui>----------------------------8-byte hexadecimal number 
representing the application EUI 
<app_key>:<key> 
- 11 - 
<key>----------------------------16-byte hexadecimal number 
representing the application key 
<nwks_key>:<key> 
<key>-------------------------16-byte hexadecimal number 
representing the network session key 
<apps_key>:<key> 
<key>------------------------ 16-byte hexadecimal number representing 
the application session key 
<tx_power>:<dbm> 
<dbm>------------------- LoRaWAN Tx Power 
<adr>:<status> 
<status>----------------------------- string value representing 
the state, either “on” or “off”. 
<dr>:<data rate> 
<data rate>-----------------------decimal number representing the 
data rate, from 0 and 4, but within 
the limits of the data rate range for 
the defined channels. 
< public_net >:<status> 
<status>------------------- string value representing 
the state, either “on” or “off”. 
< rx_delay1 >:<delay> 
<delay>-------------------decimal number representing 
the delay between the transmission 
and the first Reception window 
in milliseconds, from 0 to 65535. 
*/ 
void setConnConfig(String key, String value){ 
 sendCommand("at+set_config=" + key + ":" + value + "\r\n"); 
} 

Credits

Naresh krish

Naresh krish

22 projects • 70 followers
Maker, Hacker, Guitarist, Full time Android and iOS Dev.

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