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June 1, 2019 08:35
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/******************************************************************************* | |
* Copyright (c) 2015 Thomas Telkamp and Matthijs Kooijman | |
* Copyright (c) 2018 Terry Moore, MCCI | |
* | |
* Permission is hereby granted, free of charge, to anyone | |
* obtaining a copy of this document and accompanying files, | |
* to do whatever they want with them without any restriction, | |
* including, but not limited to, copying, modification and redistribution. | |
* NO WARRANTY OF ANY KIND IS PROVIDED. | |
* | |
* This example sends a valid LoRaWAN packet with payload "Hello, | |
* world!", using frequency and encryption settings matching those of | |
* the The Things Network. | |
* | |
* This uses ABP (Activation-by-personalisation), where a DevAddr and | |
* Session keys are preconfigured (unlike OTAA, where a DevEUI and | |
* application key is configured, while the DevAddr and session keys are | |
* assigned/generated in the over-the-air-activation procedure). | |
* | |
* Note: LoRaWAN per sub-band duty-cycle limitation is enforced (1% in | |
* g1, 0.1% in g2), but not the TTN fair usage policy (which is probably | |
* violated by this sketch when left running for longer)! | |
* | |
* To use this sketch, first register your application and device with | |
* the things network, to set or generate a DevAddr, NwkSKey and | |
* AppSKey. Each device should have their own unique values for these | |
* fields. | |
* | |
* Do not forget to define the radio type correctly in | |
* arduino-lmic/project_config/lmic_project_config.h or from your BOARDS.txt. | |
* | |
*******************************************************************************/ | |
// References: | |
// [feather] adafruit-feather-m0-radio-with-lora-module.pdf | |
#include <lmic.h> | |
#include <hal/hal.h> | |
#include <SPI.h> | |
// LoRaWAN NwkSKey, network session key | |
// This is the default Semtech key, which is used by the early prototype TTN | |
// network. | |
static const PROGMEM u1_t NWKSKEY[16] = { 0xA5, 0x80, 0xF8, 0x50, 0x9E, 0x07, 0x1F, 0x34, 0x9E, 0x08, 0x17, 0x82, 0x2C, 0x27, 0x25, 0x8B }; | |
// LoRaWAN AppSKey, application session key | |
// This is the default Semtech key, which is used by the early prototype TTN | |
// network. | |
static const u1_t PROGMEM APPSKEY[16] = { 0x27, 0x0D, 0x60, 0xE7, 0x88, 0x8F, 0xCA, 0x6B, 0x00, 0xAB, 0x03, 0xCA, 0xAB, 0x45, 0x3C, 0x96 }; | |
// LoRaWAN end-device address (DevAddr) | |
static const u4_t DEVADDR = 0x260118BE ; // <-- Change this address for every node! | |
// These callbacks are only used in over-the-air activation, so they are | |
// left empty here (we cannot leave them out completely unless | |
// DISABLE_JOIN is set in arduino-lmic/project_config/lmic_project_config.h, | |
// otherwise the linker will complain). | |
void os_getArtEui (u1_t* buf) { } | |
void os_getDevEui (u1_t* buf) { } | |
void os_getDevKey (u1_t* buf) { } | |
static uint8_t mydata[] = "Hello, world!"; | |
static osjob_t sendjob; | |
// Schedule TX every this many seconds (might become longer due to duty | |
// cycle limitations). | |
const unsigned TX_INTERVAL = 60; | |
// Pin mapping | |
// Adapted for Feather M0 per p.10 of [feather] | |
const lmic_pinmap lmic_pins = { | |
.nss = D8, | |
.rxtx = LMIC_UNUSED_PIN, | |
.rst = D0, | |
.dio = {D1, D2, LMIC_UNUSED_PIN}, | |
}; | |
void setup() { | |
Serial.begin(115200); | |
Serial.println(); | |
Serial.println(F("Starting")); | |
pinMode(BUILTIN_LED, OUTPUT); | |
// LMIC init | |
os_init(); | |
// Reset the MAC state. Session and pending data transfers will be discarded. | |
LMIC_reset(); | |
uint8_t appskey[sizeof(APPSKEY)]; | |
uint8_t nwkskey[sizeof(NWKSKEY)]; | |
memcpy_P(appskey, APPSKEY, sizeof(APPSKEY)); | |
memcpy_P(nwkskey, NWKSKEY, sizeof(NWKSKEY)); | |
LMIC_setSession (0x13, DEVADDR, nwkskey, appskey); | |
#if defined(CFG_eu868) | |
Serial.println("EU"); | |
// Set up the channels used by the Things Network, which corresponds | |
// to the defaults of most gateways. Without this, only three base | |
// channels from the LoRaWAN specification are used, which certainly | |
// works, so it is good for debugging, but can overload those | |
// frequencies, so be sure to configure the full frequency range of | |
// your network here (unless your network autoconfigures them). | |
// Setting up channels should happen after LMIC_setSession, as that | |
// configures the minimal channel set. | |
LMIC_setupChannel(0, 868100000, DR_RANGE_MAP(DR_SF12, DR_SF7), BAND_CENTI); // g-band | |
LMIC_setupChannel(1, 868300000, DR_RANGE_MAP(DR_SF12, DR_SF7B), BAND_CENTI); // g-band | |
LMIC_setupChannel(2, 868500000, DR_RANGE_MAP(DR_SF12, DR_SF7), BAND_CENTI); // g-band | |
LMIC_setupChannel(3, 867100000, DR_RANGE_MAP(DR_SF12, DR_SF7), BAND_CENTI); // g-band | |
LMIC_setupChannel(4, 867300000, DR_RANGE_MAP(DR_SF12, DR_SF7), BAND_CENTI); // g-band | |
LMIC_setupChannel(5, 867500000, DR_RANGE_MAP(DR_SF12, DR_SF7), BAND_CENTI); // g-band | |
LMIC_setupChannel(6, 867700000, DR_RANGE_MAP(DR_SF12, DR_SF7), BAND_CENTI); // g-band | |
LMIC_setupChannel(7, 867900000, DR_RANGE_MAP(DR_SF12, DR_SF7), BAND_CENTI); // g-band | |
LMIC_setupChannel(8, 868800000, DR_RANGE_MAP(DR_FSK, DR_FSK), BAND_MILLI); // g2-band | |
// TTN defines an additional channel at 869.525Mhz using SF9 for class B | |
// devices' ping slots. LMIC does not have an easy way to define set this | |
// frequency and support for class B is spotty and untested, so this | |
// frequency is not configured here. | |
#elif defined(CFG_us915) | |
// NA-US channels 0-71 are configured automatically | |
// but only one group of 8 should (a subband) should be active | |
// TTN recommends the second sub band, 1 in a zero based count. | |
// https://github.com/TheThingsNetwork/gateway-conf/blob/master/US-global_conf.json | |
LMIC_selectSubBand(1); | |
#endif | |
// Disable link check validation | |
LMIC_setLinkCheckMode(0); | |
// TTN uses SF9 for its RX2 window. | |
LMIC.dn2Dr = DR_SF9; | |
// Set data rate and transmit power for uplink (note: txpow seems to be ignored by the library) | |
LMIC_setDrTxpow(DR_SF7,14); | |
// Start job | |
do_send(&sendjob); | |
} | |
void loop() { | |
unsigned long now; | |
now = millis(); | |
if ((now & 512) != 0) { | |
digitalWrite(BUILTIN_LED, HIGH); | |
} | |
else { | |
digitalWrite(BUILTIN_LED, LOW); | |
} | |
os_runloop_once(); | |
} | |
void onEvent (ev_t ev) { | |
Serial.print(os_getTime()); | |
Serial.print(": "); | |
switch(ev) { | |
case EV_SCAN_TIMEOUT: | |
Serial.println(F("EV_SCAN_TIMEOUT")); | |
break; | |
case EV_BEACON_FOUND: | |
Serial.println(F("EV_BEACON_FOUND")); | |
break; | |
case EV_BEACON_MISSED: | |
Serial.println(F("EV_BEACON_MISSED")); | |
break; | |
case EV_BEACON_TRACKED: | |
Serial.println(F("EV_BEACON_TRACKED")); | |
break; | |
case EV_JOINING: | |
Serial.println(F("EV_JOINING")); | |
break; | |
case EV_JOINED: | |
Serial.println(F("EV_JOINED")); | |
break; | |
/* | |
|| This event is defined but not used in the code. No | |
|| point in wasting codespace on it. | |
|| | |
|| case EV_RFU1: | |
|| Serial.println(F("EV_RFU1")); | |
|| break; | |
*/ | |
case EV_JOIN_FAILED: | |
Serial.println(F("EV_JOIN_FAILED")); | |
break; | |
case EV_REJOIN_FAILED: | |
Serial.println(F("EV_REJOIN_FAILED")); | |
break; | |
case EV_TXCOMPLETE: | |
Serial.println(F("EV_TXCOMPLETE (includes waiting for RX windows)")); | |
if (LMIC.txrxFlags & TXRX_ACK) | |
Serial.println(F("Received ack")); | |
if (LMIC.dataLen) { | |
Serial.println(F("Received ")); | |
Serial.println(LMIC.dataLen); | |
Serial.println(F(" bytes of payload")); | |
} | |
// Schedule next transmission | |
os_setTimedCallback(&sendjob, os_getTime()+sec2osticks(TX_INTERVAL), do_send); | |
break; | |
case EV_LOST_TSYNC: | |
Serial.println(F("EV_LOST_TSYNC")); | |
break; | |
case EV_RESET: | |
Serial.println(F("EV_RESET")); | |
break; | |
case EV_RXCOMPLETE: | |
// data received in ping slot | |
Serial.println(F("EV_RXCOMPLETE")); | |
break; | |
case EV_LINK_DEAD: | |
Serial.println(F("EV_LINK_DEAD")); | |
break; | |
case EV_LINK_ALIVE: | |
Serial.println(F("EV_LINK_ALIVE")); | |
break; | |
/* | |
|| This event is defined but not used in the code. No | |
|| point in wasting codespace on it. | |
|| | |
|| case EV_SCAN_FOUND: | |
|| Serial.println(F("EV_SCAN_FOUND")); | |
|| break; | |
*/ | |
case EV_TXSTART: | |
Serial.println(F("EV_TXSTART")); | |
break; | |
default: | |
Serial.print(F("Unknown event: ")); | |
Serial.println((unsigned) ev); | |
break; | |
} | |
} | |
void do_send(osjob_t* j){ | |
// Check if there is not a current TX/RX job running | |
if (LMIC.opmode & OP_TXRXPEND) { | |
Serial.println(F("OP_TXRXPEND, not sending")); | |
} else { | |
// Prepare upstream data transmission at the next possible time. | |
LMIC_setTxData2(1, mydata, sizeof(mydata)-1, 0); | |
Serial.println(F("Packet queued")); | |
} | |
// Next TX is scheduled after TX_COMPLETE event. | |
} |
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