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TTN Ulm Minster Node - Basic Example
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#include <lmic.h> | |
#include <hal/hal.h> | |
#include <SPI.h> | |
// TODO: fill in your credentials here | |
static const PROGMEM u1_t NWKSKEY[16] = ; | |
static const u1_t PROGMEM APPSKEY[16] = ; | |
static const u4_t DEVADDR = ; | |
void os_getArtEui (u1_t* buf) { } | |
void os_getDevEui (u1_t* buf) { } | |
void os_getDevKey (u1_t* buf) { } | |
static osjob_t sendjob; | |
const unsigned TX_INTERVAL = 30; | |
// Pin mapping | |
const lmic_pinmap lmic_pins = { | |
.nss = 10, // ulm node 10 | |
.rxtx = LMIC_UNUSED_PIN, | |
.rst = LMIC_UNUSED_PIN, | |
.dio = {4, 5, 6}, // TTN Ulm Minster node {4, 5 ,6} | |
}; | |
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; | |
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; | |
default: | |
Serial.println(F("Unknown event")); | |
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 { | |
int aNumber = 161530; // Height of the Ulm Minster in mm. | |
byte payload[2]; | |
payload[0] = highByte(aNumber); | |
payload[1] = lowByte(aNumber); | |
LMIC_setTxData2(1, (uint8_t*)payload, sizeof(payload), 0); | |
Serial.println(F("Packet queued")); | |
} | |
} | |
void setup() { | |
Serial.begin(9600); | |
Serial.println(F("Starting")); | |
#ifdef VCC_ENABLE | |
// For Pinoccio Scout boards | |
pinMode(VCC_ENABLE, OUTPUT); | |
digitalWrite(VCC_ENABLE, HIGH); | |
delay(1000); | |
#endif | |
// LMIC init | |
os_init(); | |
// Reset the MAC state. Session and pending data transfers will be discarded. | |
LMIC_reset(); | |
#ifdef PROGMEM | |
uint8_t appskey[sizeof(APPSKEY)]; | |
uint8_t nwkskey[sizeof(NWKSKEY)]; | |
memcpy_P(appskey, APPSKEY, sizeof(APPSKEY)); | |
memcpy_P(nwkskey, NWKSKEY, sizeof(NWKSKEY)); | |
LMIC_setSession (0x1, DEVADDR, nwkskey, appskey); | |
#else | |
// If not running an AVR with PROGMEM, just use the arrays directly | |
LMIC_setSession (0x1, DEVADDR, NWKSKEY, APPSKEY); | |
#endif | |
#if defined(CFG_eu868) | |
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 | |
#elif defined(CFG_us915) | |
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() { | |
os_runloop_once(); | |
} |
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