#include <SPI.h>#include <lmic.h>#include <hal/hal.h>// LoRaWAN NwkSKey, network session key// This is the default Semtech key, which is used by the prototype TTN// network initially.static const PROGMEM u1_t NWKSKEY[16] = {0x34,0x56,0x78,0x90,0x98,0x76,0x54,0x34,0x56,0x78,0x90,0x98,0x76,0x54,0x32,0x34};// LoRaWAN AppSKey, application session key// This is the default Semtech key, which is used by the prototype TTN// network initially.static const u1_t PROGMEM APPSKEY[16] = {0x56,0x78,0x90,0x98,0x76,0xFF,0xFF,0xF4,0x56,0x78,0x90,0x98,0x76,0x54,0x45,0x67};// LoRaWAN end-device address (DevAddr)// See http://thethingsnetwork.org/wiki/AddressSpacestatic const u4_t DEVADDR = 0x23456789 ; // <-- 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 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 = 20;// Pin mappingconst lmic_pinmap lmic_pins = {    .nss = RADIO_NSS,    .rxtx = RADIO_RF_CRX_RX,    .rst = RADIO_RESET,    .dio = {RADIO_DIO_0, RADIO_DIO_1, RADIO_DIO_2},    .rxtx_rx_active = 1,    .rssi_cal = LMIC_UNUSED_PIN,    // the Murata module is direct-wired, we can use 8 MHz for SPI.    .spi_freq = 8000000};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;            break;        case EV_TXCOMPLETE:            Serial.println(F("EV_TXCOMPLETE (includes waiting for RX windows)"));            if(LMIC.dataLen) {                // data received in rx slot after tx                Serial.print(F("Data Received: "));                Serial.write(LMIC.frame+LMIC.dataBeg, LMIC.dataLen);                Serial.println();            }            // 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 {        // 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() {        pinMode(LED_BUILTIN,OUTPUT);//PB_6  //CRF3    delay(200);    Serial.begin(115200);    while(!Serial);    Serial.println(F("Starting"));        digitalWrite(LED_BUILTIN,LOW);    delay(500);    digitalWrite(LED_BUILTIN,HIGH);    delay(500);    SPI.setMISO(RADIO_MISO);    SPI.setMOSI(RADIO_MOSI);    SPI.setSCLK(RADIO_SCLK);    SPI.setSSEL(RADIO_NSS);    //pinMode(RADIO_XTAL_EN,OUTPUT);   //pinMode(RADIO_RF_CBT_HF,OUTPUT); //PB_7  //CRF2 HF  //pinMode(RADIO_RF_CTX_PA,OUTPUT);//PA_4  //CRF1 PA      //digitalWrite(RADIO_XTAL_EN,HIGH);     //digitalWrite(RADIO_RF_CBT_HF,HIGH);  //digitalWrite(RADIO_RF_CTX_PA,HIGH);    // LMIC init    os_init();    Serial.println("Init");    // Reset the MAC state. Session and pending data transfers will be discarded.    LMIC_reset();    // Set static session parameters. Instead of dynamically establishing a session    // by joining the network, precomputed session parameters are be provided.    #ifdef PROGMEM    // On AVR, these values are stored in flash and only copied to RAM    // once. Copy them to a temporary buffer here, LMIC_setSession will    // copy them into a buffer of its own again.    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);    #endiffor (int channel=0; channel<72; ++channel) {      LMIC_disableChannel(channel);    }  //SF TTN/*        LMIC_enableChannel(0);      LMIC_enableChannel(1);      LMIC_enableChannel(2);  //904.3Mhz      LMIC_enableChannel(3);      LMIC_enableChannel(4);      LMIC_enableChannel(5);      LMIC_enableChannel(6);      LMIC_enableChannel(7);      LMIC_enableChannel(8);    */  //Home   /*       LMIC_enableChannel(48);      LMIC_enableChannel(49);      LMIC_enableChannel(50);      LMIC_enableChannel(51);      LMIC_enableChannel(52);      LMIC_enableChannel(53);      LMIC_enableChannel(54);      LMIC_enableChannel(55);      LMIC_enableChannel(70);      */    // 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.    // Disable link check validation    LMIC_setLinkCheckMode(0);    LMIC_setAdrMode(false);        // Set data rate and transmit power (note: txpow seems to be ignored by the library)    //LMIC_setDrTxpow(DR_SF7,14);    Serial.println("OK");     // Start job    do_send(&sendjob);    }void loop() {  os_runloop_once();}