diff --git a/IOT/receiver LoRa/include/Program.h b/IOT/receiver LoRa/include/Program.h
index 66e4a79..c840657 100644
--- a/IOT/receiver LoRa/include/Program.h	
+++ b/IOT/receiver LoRa/include/Program.h	
@@ -1,7 +1,10 @@
 #ifndef PROGRAM_H
 #define PROGRAM_H
 
-#include "Arduino.h"
+#include <Arduino.h>
+#include <LoRa.h>
+#include <SPI.h>
+#include <Wire.h>
 
 class Program {
 public:
diff --git a/IOT/receiver LoRa/src/Program.cpp b/IOT/receiver LoRa/src/Program.cpp
index e412959..82ff6d8 100644
--- a/IOT/receiver LoRa/src/Program.cpp	
+++ b/IOT/receiver LoRa/src/Program.cpp	
@@ -3,6 +3,18 @@
 Program::Program() {
     // Startup
     Serial.begin(MONITOR_SPEED);
+    Serial.println("initBoard");
+    SPI.begin(RADIO_SCLK_PIN, RADIO_MISO_PIN, RADIO_MOSI_PIN); //for LoRa module
+    Wire.begin(I2C_SDA, I2C_SCL);//for oled screen
+    // When the power is turned on, a delay is required.
+    delay(1500);
+
+    //init LoRa
+    LoRa.setPins(RADIO_CS_PIN, RADIO_RST_PIN, RADIO_DIO0_PIN);
+    if (!LoRa.begin(LoRa_frequency)) {
+        Serial.println("Starting LoRa failed!");
+        while (1);
+    }
 }
 
 void Program::loop() {
diff --git a/IOT/receiver LoRa/src/main.cpp b/IOT/receiver LoRa/src/main.cpp
index 74bf5a7..70fe082 100644
--- a/IOT/receiver LoRa/src/main.cpp	
+++ b/IOT/receiver LoRa/src/main.cpp	
@@ -1,11 +1,115 @@
-#include "Program.h"
+// #include "Program.h"
 
-Program* program;
+// Program* program;
 
-void setup() {
-    program = new Program();
+// void setup() {
+//     program = new Program();
+// }
+
+// void loop() {
+//     program->loop();
+// }
+
+
+#include <LoRa.h>
+#include "boards.h"
+
+#include <Arduino.h>
+
+void setup()
+{
+    initBoard();
+    // When the power is turned on, a delay is required.
+    delay(1500);
+
+    Serial.println("LoRa Receiver");
+
+    LoRa.setPins(RADIO_CS_PIN, RADIO_RST_PIN, RADIO_DIO0_PIN);
+    if (!LoRa.begin(LoRa_frequency)) {
+        Serial.println("Starting LoRa failed!");
+        while (1);
+    }
 }
 
-void loop() {
-    program->loop();
+void loop()
+{
+    // try to parse packet
+    int packetSize = LoRa.parsePacket();
+    if (packetSize) {
+        // received a packet
+        Serial.print("Received packet '");
+
+        String recv = "";
+        // read packet
+        while (LoRa.available()) {
+            recv += (char)LoRa.read();
+        }
+
+        Serial.println(recv);
+
+        // print RSSI of packet
+        Serial.print("' with RSSI ");
+        Serial.println(LoRa.packetRssi());
+#ifdef HAS_DISPLAY
+        if (u8g2) {
+            u8g2->clearBuffer();
+            char buf[256];
+            u8g2->drawStr(0, 12, "Received OK!");
+            u8g2->drawStr(0, 26, recv.c_str());
+            snprintf(buf, sizeof(buf), "RSSI:%i", LoRa.packetRssi());
+            u8g2->drawStr(0, 40, buf);
+            snprintf(buf, sizeof(buf), "SNR:%.1f", LoRa.packetSnr());
+            u8g2->drawStr(0, 56, buf);
+            u8g2->sendBuffer();
+        }
+#endif
+    }
 }
+
+
+
+// #define HAS_DISPLAY
+
+// #include <LoRa.h>
+// #include "boards.h"
+
+// int counter = 0;
+
+// void setup()
+// {
+//     initBoard();
+//     // When the power is turned on, a delay is required.
+//     delay(1500);
+
+//     Serial.println("LoRa Sender");
+//     LoRa.setPins(RADIO_CS_PIN, RADIO_RST_PIN, RADIO_DIO0_PIN);
+//     if (!LoRa.begin(LoRa_frequency)) {
+//         Serial.println("Starting LoRa failed!");
+//         while (1);
+//     }
+// }
+
+// void loop()
+// {
+//     Serial.print("Sending packet: ");
+//     Serial.println(counter);
+
+//     // send packet
+//     LoRa.beginPacket();
+//     LoRa.print("hello ");
+//     LoRa.print(counter);
+//     LoRa.endPacket();
+
+// #ifdef HAS_DISPLAY
+//     if (u8g2) {
+//         char buf[256];
+//         u8g2->clearBuffer();
+//         u8g2->drawStr(0, 12, "Transmitting: OK!");
+//         snprintf(buf, sizeof(buf), "Sending: %d", counter);
+//         u8g2->drawStr(0, 30, buf);
+//         u8g2->sendBuffer();
+//     }
+// #endif
+//     counter++;
+//     delay(10000);
+// }