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127 lines
3.2 KiB
Arduino
127 lines
3.2 KiB
Arduino
/*
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* Author: JP Meijers
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* Date: 2016-10-20
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*
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* Transmit a one byte packet via TTN. This happens as fast as possible, while still keeping to
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* the 1% duty cycle rules enforced by the RN2483's built in LoRaWAN stack. Even though this is
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* allowed by the radio regulations of the 868MHz band, the fair use policy of TTN may prohibit this.
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*
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* CHECK THE RULES BEFORE USING THIS PROGRAM!
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*
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* CHANGE ADDRESS!
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* Change the device address, network (session) key, and app (session) key to the values
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* that are registered via the TTN dashboard.
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* The appropriate line is "myLora.initABP(XXX);" or "myLora.initOTAA(XXX);"
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* When using ABP, it is advised to enable "relax frame count".
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*
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* Connect the RN2xx3 as follows:
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* RN2xx3 -- ESP8266
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* Uart TX -- GPIO4
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* Uart RX -- GPIO5
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* Reset -- GPIO15
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* Vcc -- 3.3V
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* Gnd -- Gnd
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*
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*/
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#include <rn2xx3.h>
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#include <SoftwareSerial.h>
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#define RESET 15
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SoftwareSerial mySerial(4, 5); // RX, TX !! labels on relay board is swapped !!
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//create an instance of the rn2xx3 library,
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//giving the software UART as stream to use,
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//and using LoRa WAN
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rn2xx3 myLora(mySerial);
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// the setup routine runs once when you press reset:
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void setup() {
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// LED pin is GPIO2 which is the ESP8266's built in LED
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pinMode(2, OUTPUT);
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led_on();
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// Open serial communications and wait for port to open:
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Serial.begin(57600);
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mySerial.begin(57600);
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delay(1000); //wait for the arduino ide's serial console to open
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Serial.println("Startup");
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initialize_radio();
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//transmit a startup message
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myLora.tx("TTN Mapper on ESP8266 node");
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led_off();
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delay(2000);
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}
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void initialize_radio()
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{
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//reset RN2xx3
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pinMode(RESET, OUTPUT);
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digitalWrite(RESET, LOW);
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delay(100);
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digitalWrite(RESET, HIGH);
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delay(100); //wait for the RN2xx3's startup message
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mySerial.flush();
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//check communication with radio
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String hweui = myLora.hweui();
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while(hweui.length() != 16)
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{
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Serial.println("Communication with RN2xx3 unsuccessful. Power cycle the board.");
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Serial.println(hweui);
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delay(10000);
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hweui = myLora.hweui();
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}
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//print out the HWEUI so that we can register it via ttnctl
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Serial.println("When using OTAA, register this DevEUI: ");
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Serial.println(hweui);
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Serial.println("RN2xx3 firmware version:");
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Serial.println(myLora.sysver());
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//configure your keys and join the network
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Serial.println("Trying to join TTN");
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bool join_result = false;
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//ABP: initABP(String addr, String AppSKey, String NwkSKey);
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join_result = myLora.initABP("02017201", "8D7FFEF938589D95AAD928C2E2E7E48F", "AE17E567AECC8787F749A62F5541D522");
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//OTAA: initOTAA(String AppEUI, String AppKey);
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//join_result = myLora.initOTAA("70B3D57ED00001A6", "A23C96EE13804963F8C2BD6285448198");
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while(!join_result)
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{
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Serial.println("Unable to join. Are your keys correct, and do you have TTN coverage?");
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delay(60000); //delay a minute before retry
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join_result = myLora.init();
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}
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Serial.println("Successfully joined TTN");
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}
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// the loop routine runs over and over again forever:
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void loop() {
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led_on();
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Serial.println("TXing");
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myLora.tx("!"); //one byte, blocking function
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led_off();
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delay(200);
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}
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void led_on()
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{
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digitalWrite(2, 1);
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}
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void led_off()
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{
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digitalWrite(2, 0);
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}
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