const int BUFFER_SIZE = 64; // Size of the buffer
char inputBuffer[BUFFER_SIZE]; // Buffer to store incoming data
int head = 0; // Head index for circular buffer
int tail = 0; // Tail index for circular buffer
bool bufferFull = false;

void setup() {
    Serial.begin(9600);
}

void loop() {
    while (Serial.available() > 0) {
        char incomingByte = Serial.read();
        inputBuffer[head] = incomingByte;
        head = (head + 1) % BUFFER_SIZE;

        // Check if the buffer is full
        if (head == tail) {
            bufferFull = true;
        }

        // Process the data if the buffer is full or a certain condition is met
        if (bufferFull || (head != tail && Serial.available() == 0)) {
            processData();
        }
    }
}

// Function to process the data in the buffer
void processData() {
    Serial.print("Received: ");
    int end = head;

    if (bufferFull) {
        for (int i = tail; i != head; i = (i + 1) % BUFFER_SIZE) {
            Serial.print(inputBuffer[i]);
        }
        bufferFull = false; // Reset the buffer full flag
    } else {
        for (int i = tail; i != end; i = (i + 1) % BUFFER_SIZE) {
            Serial.print(inputBuffer[i]);
        }
    }
    Serial.println();

    // Reset the buffer
    tail = head;
}