feat: added configurations for i2c communication between devices

APL_Slave_3/README.md

@@ -1 +1,8 @@
-# Architektoniczne perełki Lublina - Slave 3
+# Architektoniczne perełki Lublina - Slave 3
+
+## I2C 
+Pins:
+ - SDA -> 21
+ - SCL -> 22
+
+Address: 0x0A

APL_Slave_3/src/main.cpp

@@ -1,11 +1,29 @@
 #include <Arduino.h>
+#include <Wire.h>
+
+#define SDA_PIN 21
+#define SCL_PIN 22
+
+#define SLAVE_ADDRESS 0x0A
+
+void requestEvent();
 
 void setup()
 {
   Serial.begin(115200);
+
+  Wire.begin(SDA_PIN, SCL_PIN, SLAVE_ADDRESS); // Initialize I2C with specified SDA and SCL pins
+
+  Wire.onRequest(requestEvent);
 }
 
 void loop()
 {
-  // put your main code here, to run repeatedly:
+}
+
+void requestEvent()
+{
+  // TODO: Send data to the master when requested
+  Serial.println("Master requested data from Slave.");
+  Wire.write("Hello from Slave!");
 }