====== Esp32UdpClientServer 01V01 =====
[[http://www.openhardsoftware.de/ | Open Hard- & Software]]
[
[[http://www.openhardsoftware.de/dokuwiki | DokuWiki]]
[[http://www.openhardsoftware.de/websites | WebSites]]
[[http://www.openhardsoftware.de/mediawiki | MediaWiki]]
[[http://www.openhardsoftware.de/nextcloud | NextCloud]]
]

===== Übersicht =====
  * Single MicroPython-Modul **Esp32UdpClient.py** zum Empfangen von UDP-Daten
  * Single MicroPython-Modul **Esp32UdpServer.py** zum Senden von UDP-Daten

===== Benutzung =====
  * Datenaustausch zwischen UdpClient und UdpServer
  * UdpClient(Esp32) wartet (nicht blocking!) auf Daten vom UdpServer(Pc)
  * UdpClient(Pc) wartet (nicht blocking!) auf Daten vom UdpServer(Esp32)

SourceCode **Esp32UdpClient.py**, arbeitet zusammen mit [[:module:python:pcudpclientserver:PcUdpClientServer#PcUdpServer|PcUdpServer.py]]:
<code python> 
#
import time
import network as NTW
import socket as SKT
#
WL_SSID = 'ssid'
WL_PW = 'pw'
#
UDP_IPADDRESS = '192.168.178.33' # '255.255.255.255' # '192.168.178.255' #'192.168.178.33'
UDP_IPPORT = 5005
#
#-----------------------------------------------------------
if ('__main__' == __name__):
    #
    print('*** UdpClient: begin')
    #
    Wlan = NTW.WLAN(NTW.STA_IF)
    Wlan.active(False)
    Wlan.active(True)
    Wlan.connect(WL_SSID, WL_PW)
    while not(Wlan.isconnected()):
        pass
    print('Wlan-IP[{0}]'.format(Wlan.ifconfig()))    
    #
    Socket = SKT.socket(SKT.AF_INET, SKT.SOCK_DGRAM)
    Socket.bind((UDP_IPADDRESS, UDP_IPPORT))
    Socket.setblocking(0)
    Loop = True
    while (Loop):
        try:       
            Data, Address = Socket.recvfrom(1024)
            if (b'Q' == Data):
                Loop = False
        except SKT.error:
            pass 
        else:
            print(Data)
        finally:
            # debug print('-')
            time.sleep(0.1)
    Socket.close()
    #
    print('*** UdpClient: end')
    #
</code>

SourceCode **Esp32UdpServer.py**, arbeitet zusammen mit [[:module:python:pcudpclientserver:PcUdpClientServer#PcUdpClient|PcUdpClient.py]]:
<code python>
#
import time
import network as NTW
import socket as SKT
#
WL_SSID = 'ssid'
WL_PW = 'pw'
#
UDP_IPADDRESS = '192.168.178.255' # '255.255.255.255' # '192.168.178.255' #'192.168.178.33'
UDP_IPPORT = 5005
#
#-----------------------------------------------------------
if ('__main__' == __name__):
    #
    print('*** UdpServer: begin')
    #
    Wlan = NTW.WLAN(NTW.STA_IF)
    Wlan.active(False)
    Wlan.active(True)
    Wlan.connect(WL_SSID, WL_PW)
    while not(Wlan.isconnected()):
        pass
    print('Wlan-IP[{0}]'.format(Wlan.ifconfig()))    
    #
    Socket = SKT.socket(SKT.AF_INET, SKT.SOCK_DGRAM)
    for I in range(0, 10):
        print('.')
        Socket.sendto(b'Hello', (UDP_IPADDRESS, UDP_IPPORT))
        time.sleep(1.0)
    #
    Socket.sendto(b'Q', (UDP_IPADDRESS, UDP_IPPORT))
    Socket.close()
    print('*** UdpServer: end')
    #
</code>

Ausgabe in Terminal:
<code python>
</code>



===== Version =====
{{:module:micropython:2112090400_Esp32UdpClientServer_01V01.zip|2112090400_Esp32UdpClientServer_01V01.zip}}

-----
[[http://www.openhardsoftware.de/ | Open Hard- & Software]]
[
[[http://www.openhardsoftware.de/dokuwiki | DokuWiki]]
[[http://www.openhardsoftware.de/websites | WebSites]]
[[http://www.openhardsoftware.de/mediawiki | MediaWiki]]
[[http://www.openhardsoftware.de/nextcloud | NextCloud]]
]