Week 11: networking and communications

For network and communications, I wanted to get an XIAO ESP32S3 Sense camera module, which communicates through Wifi, running for my final project. The Openflexure microscope, which i am basing my project off of, uses a Raspberry Pi Camera Module v2 to create an optics module capable of 20x magnification. The ESP32S3 Sense camera module available in the CBA lab have a similar design, so I was able to alter it in the same way with a lens camera-lens-spacer.

I then used the following code from random nerd tutorials to create an Wifi access point with a XIAO ESP32C6.

              
                #include 
                  // Replace with your network credentials
                  const char* ssid     = "ESP32-Access-Point";
                  const char* password = "123456789";
                  // Set web server port number to 80
                  WiFiServer server(80);
                  void setup() {
                    Serial.begin(115200);
                    
                    // Connect to Wi-Fi network with SSID and password
                    Serial.print("Setting AP (Access Point)…");
                    // Remove the password parameter, if you want the AP (Access Point) to be open
                    WiFi.softAP(ssid, password);
                    IPAddress IP = WiFi.softAPIP();
                    Serial.print("AP IP address: ");
                    Serial.println(IP);
                    
                    server.begin();
                  }
                  void loop(){
                    WiFiClient client = server.available();   // Listen for incoming clients
                    if (client) {                             // If a new client connects,
                      Serial.println("New Client.");          // print a message out in the serial port
                      String currentLine = "";                // make a String to hold incoming data from the client
                      while (client.connected()) {            // loop while the client's connected
                        if (client.available()) {             // if there's bytes to read from the client,
                          char c = client.read();             // read a byte, then
                          Serial.write(c);                    // print it out the serial monitor
                          currentLine += c;
                          if (c == '\n') {                    // if the byte is a newline character
                            // if the current line is blank, you got two newline characters in a row.
                            // that's the end of the client HTTP request, so send a response:
                            if (currentLine.length() == 2) {
                              // HTTP headers always start with a response code (e.g. HTTP/1.1 200 OK)
                              // and a content-type so the client knows what's coming, then a blank line:
                              client.println("HTTP/1.1 200 OK");
                              client.println("Content-type:text/html");
                              client.println("Connection: close");
                              client.println();
                              
                              // Send your "Hello World" HTML response
                              client.println("");
                              client.println("
Hello World
");
                              
                              // The HTTP response ends with another blank line
                              client.println();
                              // Break out of the while loop
                              break;
                            } else { // if you got a newline, then clear currentLine
                              currentLine = "";
                            }
                          } else if (c != '\r') {  // if you got anything else but a carriage return character,
                            currentLine += c;      // add it to the end of the currentLine
                          }
                        }
                      }
                      // Close the connection
                      client.stop();
                      Serial.println("Client disconnected.");
                      Serial.println("");
                    }
                  }
              
            

I was able to get the ESP32C6 Access Point running. Then I connected the Camera Module to the Access Point and got the web camera app working.