diff --git a/ST-B-L072Z-LRWAN1/longfi-us915-button/longfi-us915-button.ino b/ST-B-L072Z-LRWAN1/longfi-us915-button/longfi-us915-button.ino
index acf8de5..497ab3f 100644
--- a/ST-B-L072Z-LRWAN1/longfi-us915-button/longfi-us915-button.ino
+++ b/ST-B-L072Z-LRWAN1/longfi-us915-button/longfi-us915-button.ino
@@ -1,236 +1,101 @@
-#include <lmic.h>
-#include <hal/hal.h>
-#include <SPI.h>
+#include "LoRaWAN.h"
+#include "TimerMillis.h"
+#include <CayenneLPP.h>
 
+const char *devEui = "FILL_ME_IN";
+const char *appEui = "FILL_ME_IN";
+const char *appKey = "FILL_ME_IN";
 
-// This should also be in little endian format
-static const u1_t PROGMEM DEVEUI[8]= { FILL_ME_IN };
-void os_getDevEui (u1_t* buf) { memcpy_P(buf, DEVEUI, 8);}
+const uint32_t TX_INTERVAL = 15000;
+TimerMillis timer_send;
 
-// This should also be in little endian format
-static const u1_t PROGMEM APPEUI[8]= { FILL_ME_IN };
-void os_getArtEui (u1_t* buf) { memcpy_P(buf, APPEUI, 8);}
-
-// This key should be in big endian format
-static const u1_t PROGMEM APPKEY[16] = { FILL_ME_IN };
-void os_getDevKey (u1_t* buf) {  memcpy_P(buf, APPKEY, 16);}
-
-static uint8_t mydata[] = {0};
-static osjob_t sendjob;
-
-// Schedule TX every this many seconds (might become longer due to duty
-// cycle limitations).
-const unsigned TX_INTERVAL = 15;
-
-// Pin mapping
-#include "arduino_lmic_hal_boards.h"
-// Pin mapping Discovery 
-const lmic_pinmap lmic_pins = *Arduino_LMIC::GetPinmap_Disco_L072cz_Lrwan1();
-
-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;
-            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;
-        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 update  packet"));
-    } else {
-        mydata[0] = 0;
-        // Prepare upstream data transmission at the next possible time.
-        LMIC_setTxData2(1, mydata, sizeof(mydata), 0);
-        Serial.println(F("Packet queued: Update Send"));
-    }
-    // Next TX is scheduled after TX_COMPLETE event.
-}
-
-bool async_send(){
-    // Check if there is not a current TX/RX job running
-    if (LMIC.opmode & OP_TXRXPEND) {
-        Serial.println(F("OP_TXRXPEND, not sending async send yet"));
-        return true;
-    } else {
-        mydata[0] = 1;
-        // Prepare upstream data transmission at the next possible time.
-        LMIC_setTxData2(1, mydata, sizeof(mydata), 0);
-        Serial.println(F("Packet queued: Async Send"));
-        return false;
-    }
-    // Next TX is scheduled after TX_COMPLETE event.
-}
+// Max Payload 11 Bytes for DR 0
+uint8_t payload[] = {0};
 
 static volatile bool button_pushed;
+static volatile bool uplink_attempted;
 
-void push_button_ISR(){
-  button_pushed = true;
+void push_button_ISR() { button_pushed = true; }
+
+void async_timer_send() {
+  if (LoRaWAN.joined() && !LoRaWAN.busy()) {
+    Serial.println("Timer Send");
+    payload[0] = 0;
+    // Send Packet
+    LoRaWAN.sendPacket(1, payload, sizeof(payload));
+    uplink_attempted = true;
+  }
 }
 
-void setup() {
-  Serial.begin(9600);
-  Serial.println("Starting");
+bool async_button_send() {
+  if (LoRaWAN.joined() && !LoRaWAN.busy()) {
+    Serial.println("Async Button Send");
+    payload[0] = 1;
+    // Send Packet
+    LoRaWAN.sendPacket(1, payload, sizeof(payload));
+    uplink_attempted = true;
+    return false;
+  } else {
+    return true;
+  }
+}
 
-  SPI.setMOSI(RADIO_MOSI_PORT);
-  SPI.setMISO(RADIO_MISO_PORT);
-  SPI.setSCLK(RADIO_SCLK_PORT);
-  SPI.setSSEL(RADIO_NSS_PORT);
+void setup(void) {
+  Serial.begin(9600);
+
+  while (!Serial) {
+  }
 
   // Configure User Button
-  pinMode(USER_BTN, INPUT_PULLUP);
-  attachInterrupt(digitalPinToInterrupt(USER_BTN), push_button_ISR, HIGH);
-  
-    Serial.println("Setup Complete");
+  pinMode(BUTTON, INPUT_PULLUP);
+  attachInterrupt(digitalPinToInterrupt(BUTTON), push_button_ISR, FALLING);
 
-    // LMIC init
-    os_init();
-    // Reset the MAC state. Session and pending data transfers will be discarded.
-    LMIC_reset();
+  // US Region
+  LoRaWAN.begin(US915);
+  // Helium SubBand
+  LoRaWAN.setSubBand(7);
+  // Disable Adaptive Data Rate
+  LoRaWAN.setADR(false);
+  // Device IDs and Key
+  LoRaWAN.joinOTAA(appEui, appKey, devEui);
 
-    // allow much more clock error than the X/1000 default. See:
-    // https://github.com/mcci-catena/arduino-lorawan/issues/74#issuecomment-462171974
-    // https://github.com/mcci-catena/arduino-lmic/commit/42da75b56#diff-16d75524a9920f5d043fe731a27cf85aL633
-    // the X/1000 means an error rate of 0.1%; the above issue discusses using values up to 10%.
-    // so, values from 10 (10% error, the most lax) to 1000 (0.1% error, the most strict) can be used.
-    LMIC_setClockError(1 * MAX_CLOCK_ERROR / 40);
+  Serial.println("JOIN( )");
 
-    LMIC_setLinkCheckMode(0);
-    LMIC_setDrTxpow(DR_SF7,14);
-    LMIC_selectSubBand(6);
+  while (!LoRaWAN.joined() && LoRaWAN.busy()) {
+    Serial.println("JOINING( )");
+    delay(5000);
+  }
+  Serial.println("JOINED( )");
 
-    // Start job (sending automatically starts OTAA too)
-    do_send(&sendjob);
-
-    
+  // Start Continuous Uplink Timer
+  timer_send.start(async_timer_send, 0, TX_INTERVAL);
 }
 
-void loop() {
-    if(button_pushed) {
-      button_pushed = async_send();
-    }
-    os_runloop_once();
+void loop(void) {
+  if (uplink_attempted) {
+    Serial.print("TRANSMIT( ");
+    Serial.print("TimeOnAir: ");
+    Serial.print(LoRaWAN.getTimeOnAir());
+    Serial.print(", NextTxTime: ");
+    Serial.print(LoRaWAN.getNextTxTime());
+    Serial.print(", MaxPayloadSize: ");
+    Serial.print(LoRaWAN.getMaxPayloadSize());
+    Serial.print(", DR: ");
+    Serial.print(LoRaWAN.getDataRate());
+    Serial.print(", TxPower: ");
+    Serial.print(LoRaWAN.getTxPower(), 1);
+    Serial.print("dbm, UpLinkCounter: ");
+    Serial.print(LoRaWAN.getUpLinkCounter());
+    Serial.print(", DownLinkCounter: ");
+    Serial.print(LoRaWAN.getDownLinkCounter());
+    Serial.println(" )");
+
+    uplink_attempted = false;
+  }
+
+  if (button_pushed) {
+    button_pushed = async_button_send();
+  }
+
+  delay(500);
 }