Upload files to "src/i2c/esp32s3_dual_i2c"

docs/readme.md

@@ -2,7 +2,7 @@
 
 ## ESP32C3 (Master) Connection
 
-![ESP32S3 Pinout](./images/esp32c3_pinout.png "Text to show on mouseover")
+![ESP32C3 Pinout](./images/xiao_esp32c3_pinout.png "Text to show on mouseover")
 
 ```
     SDA_PIN = 7
@@ -14,13 +14,33 @@
 ![ESP32S3 Pinout](./images/esp32s3_pinout.png "Text to show on mouseover")
 
 ```
-    // Red Joystic
-    DIV_ADD = 0x10
-    SDA_PIN = 5
-    SCL_PIN = 4
+    // Red Joystic Public - Slave Address
+    #define DIV_ADD     0x10
+
+    // Blue Joystic Public - Slave Address
+    #define DIV_ADD     0x20
+
+    // PUBLIC -> I2C PINS
+    #define SDA_PIN     5
+    #define SCL_PIN     4
+
+    // LOCAL -> I2C PINS
+    #define SDA_PIN     5
+    #define SCL_PIN     4
+
+    // JOYSTIC
+    #define X           1
+    #define Y           2
+    #define B           3
+
+    // FAST LED
+    #define STRIP_PIN   8
+    #define STRIP_LEDS  16
+
+    // DOTMATRIC
+    #define DMX         8
+    #define DMY         8
+    #define DIN         10
+    #define CIN         9
 
-    // Blue Joystic
-    DIV_ADD = 0x20
-    SDA_PIN = 5
-    SCL_PIN = 4
 ```

src/i2c/esp32c3_master_i2c/esp32c3_master_i2c.ino

@@ -9,7 +9,15 @@
 
 Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);
 
+// NEW Datatype For State
+enum _state { NOT_READY, READY, SENDING };
+
+// Variables
+_state  state = NOT_READY;
+
 void setup() {
+
+  // Serial
   Serial.begin(115200);
 
   // Initialize I2C bus (ESP32-C3 default pins)
@@ -17,46 +25,53 @@ void setup() {
 
   // Scan I2C devices
   Serial.println("Scanning I2C devices...");
-  // scanI2C();
+
+  // Scan I2C
+  scanI2C();
 
   // Initialize OLED
   if(!display.begin(SSD1306_SWITCHCAPVCC, OLED_ADDR)) {
     Serial.println("SSD1306 allocation failed");
     while(1);
   }
-  display.clearDisplay();
-  display.setTextSize(1);
-  display.setTextColor(SSD1306_WHITE);
-  display.setCursor(0,0);
-  display.println("Hello, ESP32-C3!");
-  display.display();
-}
 
-void scanI2C() {
-  byte error, address;
-  int nDevices = 0;
-  for(address = 1; address < 127; address++ ) {
-    Wire.beginTransmission(address);
-    error = Wire.endTransmission();
-    if (error == 0) {
-      Serial.print("I2C device found at address 0x");
-      if (address<16) Serial.print("0");
-      Serial.println(address, HEX);
-      nDevices++;
-    } else if (error==4) {
-      Serial.print("Unknown error at address 0x");
-      if (address<16) Serial.print("0");
-      Serial.println(address, HEX);
-    }
-  }
-  if (nDevices == 0)
-    Serial.println("No I2C devices found");
-  else
-    Serial.println("Scan complete");
+  // Print On Display
+  oled_write("Hello, ESP32-C3!");
+
 }
 
 void loop() {
-  // Nothing to do here for this simple example
-  scanI2C();
-  delay(1000);
+
+  // Send Tex Message To Slave
+  i2c_send_string(0x55, Question("String Message"));
+
+  // Request Data
+  Wire.requestFrom(0x55, 1);
+
+  // Read Data Available
+  if(Wire.available()) {
+    if(char(Wire.read()) == 'N') {
+      Serial.println("Requested Data : Not Ready");
+      state = NOT_READY;
+    } else {
+      Serial.println("Requested Data : Ready");
+      state = READY;
+    }
+  }
+
+  // Request Data
+  Wire.requestFrom(0x55, 6);
+
+  // Prepare 6 Bytes Of Data
+  uint8_t data[6];
+
+  // Read Data Available
+  if(Wire.available()) {
+    for(int i=0; i<6; i++) {
+      data[i] = Wire.read();
+      Serial.print(char(data[i]));
+    }
+    Serial.println();
+  }
+
 }

src/i2c/esp32c3_master_i2c/functions.ino

@@ -0,0 +1,51 @@
+  // Question
+  String Question(String Message) {
+    
+    Serial.print(Message + " : ");
+    while(!Serial.available());
+
+    Message = Serial.readStringUntil('\n');
+    while(Serial.available()) Serial.read();
+    Message.trim();
+    Serial.println(Message);
+    return Message;
+
+  }
+
+  // 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();
+  }
+
+  // I2C Scanner
+  void scanI2C() {
+
+    byte error, address;
+    int nDevices = 0;
+
+    for(address = 1; address < 127; address++ ) {
+      Wire.beginTransmission(address);
+      error = Wire.endTransmission();
+      if (error == 0) {
+        Serial.print("I2C device found at address 0x");
+        if (address<16) Serial.print("0");
+        Serial.println(address, HEX);
+        nDevices++;
+      } else if (error==4) {
+        Serial.print("Unknown error at address 0x");
+        if (address<16) Serial.print("0");
+        Serial.println(address, HEX);
+      }
+    }
+
+    if (nDevices == 0)
+      Serial.println("No I2C devices found");
+    else
+      Serial.println("Scan complete");
+
+  }

src/i2c/esp32c3_master_i2c/i2c_functions.ino

@@ -0,0 +1,22 @@
+
+  // This Function If Called Sends A Text Message Via I2C
+  void i2c_send_string(uint8_t Slave, String message) {
+  
+    // Sending Data
+    Wire.beginTransmission(Slave);
+
+    // First Data Byte Is Length
+    Wire.write(message.length());
+
+    // Second Send Data One Byte At A Time
+    for(int i=0; i<message.length(); i++) {
+      
+      // Send String Bits
+      Wire.write(message[i]);
+
+    }
+
+    // Finally Closing Transmission
+    Wire.endTransmission();
+
+  }

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.setTextColor(SSD1306_WHITE);
-  display.setCursor(0,0);
-  display.println("Hello, ESP32-S3!");
-  display.display();
+
+  // Display OLED Message
+  oled_write("Hello, ESP32-S3!");
+
+  // On Receive Data
+  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;
+    }
+
+  }