TCP server and UDP client enable

Question

Dear all, globaly my application is a web server. the Wizfi250 is configure to connect to an AP (so STA mode). a TCP socket is open with the AT+SCON command all web page are served as expected. now, for broadcast purpose, an UDP client is open too. periodically, i send a broadcast message. that work as expected most of time !.. to prepare my broadcast message, i do a AT+WSTAT=?. so i wait some reply commands /info from the wizfi250. during the wait, sometime, a message coming from the UDP socket is inserted inside the command reply ! when all right, my debbuger terminal show me : WIZFI250_SendCMD : AT+WSTAT=? WIZFI250_WaitANSWER find : AT+WSTAT=? WIZFI250_WaitANSWER find : IF/SSID/IP-Addr/Gateway/MAC/TxPower(dBm)/RSSI(-dBm) WIZFI250_WaitANSWER find : STA/EKO2/192.168.0.220/192.168.0.1/00:08:DC:1E:92:E2/31/51 WIZFI250_WaitOK : [OK] find WIZFI250_SendCMD : AT+SSEND=1,,,119 WIZFI250_WaitANSWER find : AT+SSEND=1,,,119 WIZFI250_WaitANSWER find : [1,,,119] WIZFI250_WaitOK : [OK] find when a problem occur, my debbuger terminal show me : WIZFI250_SendCMD : AT+WSTAT=? WIZFI250_WaitANSWER find : AT+WSTAT=? WIZFI250_WaitANSWER find : IF/SSID/IP-Addr/Gateway/MAC/TxPower(dBm)/RSSI(-dBm) WIZFI250_WaitANSWER find : STA/EKO2/192.168.0.220/192.168.0.1{1,192.168.0.14,8967,120}*Á°ŠƒÀ H#a ë Time NOT SETwifly-EZX Ver 4.00.1, Apr 19WP-PANEL-SW89a}fhÔÀ¨ WaitOK RCV : /00:08:DC:1E:92:E2/31/48 WIZFI250_WaitOK : [OK] find WIZFI250_SendCMD : AT+SSEND=1,,,99 WIZFI250_WaitANSWER find : AT+SSEND=1,,,99 WIZFI250_WaitANSWER find : [1,,,99] WIZFI250_WaitOK : [OK] find a DATA frame from the UDP socket ( socket number 1, from IP 192.168.0.14 which is another equipment on my LAN) is inserted in middle of the AT+WSTAT reply !! for sure i’m carefully check my code … don’t see any problem to parse the different Wizf250 message … so it is a bug from the Wizfi250 module himself ?.. firmware v 1.0.3.3 thanks for any help, regards Phil

wizdaniel · Answer

Hi phil31 If a Data frame and a reply are mixed… First of all, would you test same situation on EVB board + PC Serial tool. I guess it is because some data frame was not processed in the MCU before AT+WSTAT command had been processed. Thanks

phil31 · Answer

hello Daniel, well it’s not easy to do these tests with the EVB. the problem occurs not often, but it’s highly repetitive. each time i 've got a problem,maybe 1 each hour, this is the same DATA frame, in the same reply position : all right : WIZFI250_WaitANSWER find : STA/EKO2/192.168.0.220/192.168.0.1/00:08:DC:1E:92:E2/31/51 problem : WIZFI250_WaitANSWER find : STA/EKO2/192.168.0.220/192.168.0.1{1,192.168.0.14,8967,120}*Á°ŠƒÀ … the DATA frame arrive in same position, just after the GW ip from the WSTAT command ! if that was some DATA which arrive just before i send the WSTAT command, why i see it in a middle of the command reply !? and not just after send the WSTAT (before the echoed command), of after reply of the WSTAT command ?.. or even a single frame… why it is every time in the middle, with same position, of the command reply ? every time mixed with the reply command !..? this problem description mean nothing to you ? thanks for you support, regards Phil

phil31 · Answer

[quote=“wizdaniel”]Hi phil31 If a Data frame and a reply are mixed… First of all, would you test same situation on EVB board + PC Serial tool. I guess it is because some data frame was not processed in the MCU before AT+WSTAT command had been processed. Thanks[/quote] no i don’t think so … as you can see, the beginning of the DATA reply, is the answer to the +WSTAT command … then in the middle of this answer, a new COMMAND frame is inserted by the WIZFI module … no \CR\LF between the 2 frames ! the new command frame is fully inserted, right terminated, then the end of the WSTAT in inserted ! please some advice ? thanks, regards

phil31 · Answer

up because more i do tests, more i’m convince that there is a problem with the module ! i see clearly that an UDP frame is inserted inside the WSTAT command reply… NO CR LF to terminate the WSTAT reply before the DATA frame … doing this with the EVB is not possible it occurs on my board because it’s repetitive task… and time to time, this event occur … please can you investigate ? thanks, regards