Upload files to "src/i2c/esp32s3_dual_i2c"

src/i2c/esp32s3_dual_i2c/esp32s3_dual_i2c.ino

@@ -15,30 +15,49 @@
 #define SDA_2 4
 #define SCL_2 5
 
+// Master I2C
 TwoWire I2Cone = TwoWire(0);
+
+// OLED Display
 Adafruit_SSD1306 display(OLED_WIDTH, OLED_HEIGHT, &I2Cone, OLED_RESET);
 
+// Slave I2C
 TwoWire I2Ctwo = TwoWire(1);
 
+// NEW Datatype For State
+enum _state { NOT_READY, READY, SENDING };
+
+// Variables
+// _state  state = NOT_READY;
+_state  state = READY;
+
+
 void setup() {
+
   Serial.begin(115200);
+  Serial.println();
+  Serial.println("ESP32S3 System Started !");
 
   // Initialize first I2C bus (OLED)
   I2Cone.begin(SDA_1, SCL_1, 100000);
+
+  // Starting OLED
   if(!display.begin(SSD1306_SWITCHCAPVCC, OLED_ADDR)) {
     Serial.println("OLED allocation failed");
     while(1);
   }
-  display.clearDisplay();
+
-  display.setTextSize(1);
+  // Display OLED Message
-  display.setTextColor(SSD1306_WHITE);
+  oled_write("Hello, ESP32-S3!");
-  display.setCursor(0,0);
+
-  display.println("Hello, ESP32-S3!");
+  // On Receive Data
-  display.display();
+  I2Ctwo.onReceive(i2c_received);
+  I2Ctwo.onRequest(i2c_request);
 
   // Initialize second I2C bus (just for demo, not slave)
   I2Ctwo.begin(0x55, SDA_2, SCL_2, 100000);
   // You could scan for devices or use another I2C device here
+
 }
 
 void loop() {

src/i2c/esp32s3_dual_i2c/functions.ino

@@ -0,0 +1,9 @@
+  // OLED Display
+  void oled_write(String message) {
+    display.clearDisplay();
+    display.setTextSize(1);
+    display.setTextColor(SSD1306_WHITE);
+    display.setCursor(0, 0);
+    display.println(message);
+    display.display();
+  }

src/i2c/esp32s3_dual_i2c/i2c_functions.ino

@@ -0,0 +1,52 @@
+
+  void i2c_received(int data) {
+
+    // Read If Available
+    if(I2Ctwo.available()) {
+      
+      // Calculate Data Length
+      uint8_t datalength = I2Ctwo.read();
+
+      // Creating Data Array Based On Data Length
+      uint8_t data[datalength];
+
+      // Data Buffer
+      String message;
+
+      // Assembling Message Data
+      for(int i=0; i<datalength; i++) {
+        message += char(I2Ctwo.read());
+      }
+
+      // Printe Received Message
+      Serial.println("Message : " + message);
+
+    }
+
+  }
+
+  void i2c_request() {
+
+    if(state == READY) {
+      I2Ctwo.write(char('Y'));
+      Serial.println("Requested Data : Ready");
+      state = SENDING;
+    } else if(state == SENDING) {
+      
+      uint8_t data[6] = { 'H', 'E', 'L', 'L', 'O', 'W' };
+
+      for(int i=0; i<6; i++) {
+        I2Ctwo.write(data[i]);
+        Serial.print(data[i]);
+      }
+
+      Serial.println("Requested Data : Ready -> Sending");
+      state = NOT_READY;
+
+    } else {
+      I2Ctwo.write(char('N'));
+      Serial.println("Requested Data : Not Ready");
+      state = NOT_READY;
+    }
+
+  }