import socket from machine import ADC, Pin, WIZNET_PIO_SPI import time import network adc = ADC(Pin(26)) HallSensor = Pin(14, Pin.IN, Pin.PULL_DOWN) # W5x00 chip initialization def w5x00_init(ip_info=None): ip_info = ('192.168.11.20','255.255.255.0','192.168.11.1','8.8.8.8') spi = WIZNET_PIO_SPI(baudrate=31_250_000, mosi=Pin(23), miso=Pin(22), sck=Pin(21)) # W55RP20 PIO_SPI nic = network.WIZNET5K(spi, Pin(20), Pin(25)) # spi, cs, reset pin nic.active(True) delay = 1 if ip_info: # Static IP nic.ifconfig(ip_info) else: # DHCP for i in range(5): # DHCP sometimes fails, so we try multiple attempts try: nic.ifconfig("dhcp") except Exception as e: print(f"Attempt {i + 1} failed, retrying in {delay} second(s)...({e})") time.sleep(delay) while not nic.isconnected(): print("Waiting for the network to connect...") time.sleep(1) # print(nic.regs()) print("IP Address:", nic.ifconfig()) return nic def main(micropython_optimize=False): nic = w5x00_init() s = socket.socket() Message = " " Date_Time = " " # Binding to all interfaces - server will be accessible to other hosts! ai = socket.getaddrinfo("0.0.0.0", 8080) print("Bind address info:", ai) addr = ai[0][-1] s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1) s.bind(addr) s.listen(5) print("Listening, connect your browser to http://:8080/") counter = 0 while True: res = s.accept() client_sock = res[0] client_addr = res[1] print("Client address:", client_addr) print("Client socket:", client_sock) if not micropython_optimize: # To read line-oriented protocol (like HTTP) from a socket (and # avoid short read problem), it must be wrapped in a stream (aka # file-like) object. That's how you do it in CPython: client_stream = client_sock.makefile("rwb") else: # .. but MicroPython socket objects support stream interface # directly, so calling .makefile() method is not required. If # you develop application which will run only on MicroPython, # especially on a resource-constrained embedded device, you # may take this shortcut to save resources. client_stream = client_sock print("Request:") req = client_stream.readline() print(req) while True: h = client_stream.readline() if h == b"" or h == b"\r\n": break print(h) if not(HallSensor.value()): Message = "<< Someone opened your rack!! >>" # send email or Telegram or Whatsapp message seconds = time.time() local_time = time.localtime(seconds) Local_date= str(local_time[0]) + "/" + str(local_time[1]) + "/" + str(local_time[2]) Local_time= str(local_time[3]) + ":" + str(local_time[4]) Date_Time = Local_date + " " + Local_time CONTENT = b"""\ HTTP/1.0 200 OK

Rack security monitoring

Real Time Temperature: """ + ' ' + str(0.00366*adc.read_u16()-19) + \ " °C" + "

" + "

" + Message + "

" \ + "

" + Date_Time + "

" client_stream.write(CONTENT) client_stream.close() if not micropython_optimize: client_sock.close() counter += 1 print() main()