Cannot change DataRate somehow

[kadirozdinc]

Hello, I am trying to perform lorawan node with arduino promini 3.3v and rfm95w module. Codes are below

#include <lmic.h> #include <hal/hal.h> #include <SPI.h>

// // For normal use, we require that you edit the sketch to replace FILLMEIN // with values assigned by the TTN console. However, for regression tests, // we want to be able to compile these scripts. The regression tests define // COMPILE_REGRESSION_TEST, and in that case we define FILLMEIN to a non- // working but innocuous value. // #ifdef COMPILE_REGRESSION_TEST

define FILLMEIN 0

#else

warning "You must replace the values marked FILLMEIN with real values from the TTN control panel!"

define FILLMEIN (#dont edit this, edit the lines that use FILLMEIN)

#endif

// This EUI must be in little-endian format, so least-significant-byte // first. When copying an EUI from ttnctl output, this means to reverse // the bytes. For TTN issued EUIs the last bytes should be 0xD5, 0xB3, // 0x70. static const u1_t PROGMEM APPEUI[8] = { 0x12, 0x34, 0x56, 0x78, 0x91, 0x23, 0x45, 0x67 }; void os_getArtEui (u1_t* buf) { memcpy_P(buf, APPEUI, 8); }

// This should also be in little endian format, see above. static const u1_t PROGMEM DEVEUI[8] = {0xEB, 0x34, 0x04, 0xD0, 0x7E, 0xD5, 0xB3, 0x70 }; void os_getDevEui (u1_t* buf) { memcpy_P(buf, DEVEUI, 8); }

// This key should be in big endian format (or, since it is not really a // number but a block of memory, endianness does not really apply). In // practice, a key taken from ttnctl can be copied as-is. static const u1_t PROGMEM APPKEY[16] = { 0x19, 0x70, 0x65, 0x87, 0x35, 0xAE, 0x1E, 0x64, 0x33, 0x13, 0x6E, 0xC5, 0x96, 0x30, 0xFE, 0x71 }; void os_getDevKey (u1_t* buf) { memcpy_P(buf, APPKEY, 16); } 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 const lmic_pinmap lmic_pins = { .nss = 10, .rxtx = LMIC_UNUSED_PIN, .rst = 5, .dio = {2, 3, LMIC_UNUSED_PIN}, };

void printHex2(unsigned v) { v &= 0xff; if (v < 16) Serial.print('0'); Serial.print(v, HEX); }

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")); { u4_t netid = 0; devaddr_t devaddr = 0; u1_t nwkKey[16]; u1_t artKey[16]; LMIC_getSessionKeys(&netid, &devaddr, nwkKey, artKey); Serial.print("netid: "); Serial.println(netid, DEC); Serial.print("devaddr: "); Serial.println(devaddr, HEX); Serial.print("AppSKey: "); for (size_t i = 0; i < sizeof(artKey); ++i) { if (i != 0) Serial.print("-"); printHex2(artKey[i]); } Serial.println(""); Serial.print("NwkSKey: "); for (size_t i = 0; i < sizeof(nwkKey); ++i) { if (i != 0) Serial.print("-"); printHex2(nwkKey[i]); } Serial.println(); } // Disable link check validation (automatically enabled // during join, but because slow data rates change max TX // size, we don't use it in this example. LMIC_setLinkCheckMode(0); 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.print(F("Received ")); Serial.print(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; case EV_TXCANCELED: Serial.println(F("EV_TXCANCELED")); break; case EV_RXSTART: / do not print anything -- it wrecks timing */ break; case EV_JOIN_TXCOMPLETE: Serial.println(F("EV_JOIN_TXCOMPLETE: no JoinAccept")); 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. }

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();

LMIC_setClockError(MAX_CLOCK_ERROR * 1 / 100);

// Disable link check validation LMIC_setLinkCheckMode(0); LMIC_setAdrMode(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_SF12, 14); // LMIC_selectSubBand(1);

//LMIC_setLinkCheckMode(1); // enable link check mode on

// Start job (sending automatically starts OTAA too) do_send(&sendjob); }

void loop() { os_runloop_once(); } And config file is like:

// project-specific definitions #define CFG_eu868 1 //#define CFG_us915 1 //#define CFG_au915 1 //#define CFG_as923 1 //#define LMIC_COUNTRY_CODE LMIC_COUNTRY_CODE_JP /* for as923-JP */ //#define CFG_kr920 1 //#define CFG_in866 1 #define CFG_sx1276_radio 1 //#define LMIC_USE_INTERRUPTS #define LMIC_LORAWAN_SPEC_VERSION LMIC_LORAWAN_SPEC_VERSION_1_0_2 #define DISABLE_PING #define DISABLE_BEACONS #define LMIC_DEBUG_LEVEL 0 #define LMIC_ENABLE_DeviceTimeReq 0

I use mikrotik Lorawan Gateway wap8, altough I set dr_sf12, On the things network, uplink datas have SF7BW125 all the time, I could not change somehow. Any ideas? I just make spreading factor fixed on SF12. How can I do it ?