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patrick2399
patrick2399
Associate
October 8, 2015
Question

no data on udp

  • October 8, 2015
  • 3 replies
  • 1093 views
Posted on October 08, 2015 at 12:08

Hello,

i have a device, thats streaming data on udp Port 23. I want to read this data with a SPWF01S.

The device creates a Network with no encryption in adhoc-mode (channel 11)

I used the following to get a connection:

  • AT+S.SCFG=wifi_mode,0
  • AT+S.SCFG=wifi_priv_mode,0
  • AT+S.SSIDTXT=test
  • AT+S.SCFG=wifi_mode,2
  • AT+S.SCFG=ip_ipaddr,192.168.0.111
  • AT+S.SCFG=ip_gw,192.168.0.1
  • AT+S.SCFG=ip_dns,192.168.0.1
  • AT+S.SCFG=ip_netmask,255.255.255.0
  • AT+S.SCFG=ip_use_dhcp,0
  • AT+S.SCFG=wifi_channelnum,11
  • AT&W
  • AT+CFUN=1
(i also tried it without the manuell ip-settings)

on a browser on a pc i can reach the website of the SPWF01S if i type in the ip-adress,

so there is a connection.

Now i open a socket like this:

  • AT+S.SOCKON=192.168.0.74,23,u,ind
but if i use  AT+S.SOCKQ=00 to see if there are any data, it is always empty (but the device is sending some, i see them on the pc)

I also tried AT+S.SOCKD=23, with the same result.

What am i doing wrong?

Kind Regards

Patrick

#udp
This topic has been closed for replies.

3 replies

Gerardo GALLUCCI
Gerardo GALLUCCI
ST Employee
October 8, 2015
Posted on October 08, 2015 at 16:29

Hi Patrick,

a couple of questions:

1 - where is the socket server? if socket server is into the device, module should open a socket client (SOCKON=ip,port,u); if device is a socket client, module should open a socket server (SOCKD=23,u)

2 - if you open a socket client using '',ind'' parameter, then SOCKQ is useless. When some bytes are received, and indicator (+WIND:55) is automatically provided. simply call SOCKR to read received data.

3 - are you able to ping module from the device, and the device from the module?

Regards

jerry

patrick2399
patrick2399Author
Associate
October 19, 2015
Posted on October 19, 2015 at 14:10

Hello Jerry,

im sorry im writing this late. Thank You for your reply, everything works fine.

Regard

Patrick

emerson
emerson
Associate
December 14, 2015
Posted on December 14, 2015 at 15:19

Hi.

I am trying to listen udp broadcast packets from server but no data received.

My st module is station configured and its possible to ping in both direction.  

Server Wireshark frame :

 IP Source       IP Destination       Protocol

192.168.33.2   192.168.33.255     UDP   60   Sourceport: 44219  Destination port: 4999

 

Data packet: 00544f54485356523132

c0a821020fa1

My question is, how configure the module to listen this packets?

I try this ''AT+S.SOCKON=192.168.33.255,4999,u'' , but not work.

Somebody can help me please.

Regard.

Emerson.

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