Add Raspberry Pi Pico project

pico/wifi_client.py

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+import network
+import urequests
+import time
+import usocket
+import socket
+import ssl
+
+# global variable for the IP-Adress of the laptop hotspot
+IP_ADRESS_SERVER:str = '192.168.0.100' #None
+IP_ADRESS_ACCESSPOINT = None
+SERVER_PORT:int = 3000 #None
+
+# configures the raspberry pi as wifi-client and connects it to an access point
+def wifi_connect(SSID:str, PASSWORD:str) -> None:
+
+    # configure raspberry pi as client
+    wifi = network.WLAN(network.STA_IF)
+    # activate client
+    wifi.active(True)
+    # connect to laptop hotspot
+    wifi.connect(SSID, PASSWORD)
+
+    # wait until it has connected
+    while not wifi.isconnected():
+        print("Connect to", SSID, "...")
+        time.sleep(1)
+
+    # connected to laptop hotspot
+    print("Connected to", SSID)
+    # geat and print IP-adress of raspberry
+    ip_adress_pico = wifi.ifconfig()[0]
+    print("IP-Adresse Pico:", ip_adress_pico)
+    # get ip-adress of access point and store it in the global variable
+    global IP_ADRESS_ACCESSPOINT
+    IP_ADRESS_ACCESSPOINT = wifi.ifconfig()[2]
+    print("IP-adress access point:", IP_ADRESS_ACCESSPOINT)
+    print()
+
+
+
+# send a HTTP-request to the access point with the rate value
+def send_request(rate_value:int) -> None:
+
+    # create HTTP-URL
+    URL = f"http://{IP_ADRESS_SERVER}:{str(SERVER_PORT)}/rating/{rate_value}"
+    print(URL)
+
+    # create request
+    response = urequests.get(URL)
+
+    # print HTTP-answer of the access point
+    print("Server response:")
+    print(response.text)  # Die Antwort des Servers anzeigen
+    print()
+    response.close()
+
+
+# test, if there can be a connection to the given ip adress and port
+def ping_ip(ip:str, port:int) -> bool:
+    s = usocket.socket(usocket.AF_INET, usocket.SOCK_STREAM)
+    s.settimeout(1)
+    try:
+        s.connect((ip, port)) 
+        print(f"{ip} reachable")
+        s.close()
+        return True
+    except:
+        print(f"{ip} not reachable")
+        s.close()
+        return False
+
+
+# search for the server in the lokal network
+# in the ip range from lower_limit to upper_limit
+def search_server(lower_limit:int, upper_limit:int, port:int) -> str:
+    global IP_ADRESS_SERVER
+    for i in range(lower_limit, upper_limit):  
+        ip = IP_ADRESS_ACCESSPOINT[:-1] + str(i)
+        if ping_ip(ip, port):
+            print(f"Server found unter: {ip}:{port}")
+            IP_ADRESS_SERVER = ip 
+            return ip
+
+