i work on my application since many months.
today, i’m facing on a strange problem … : all communication between my CPU and the WIZFI250 module seem working as expected.
i join my AP without problem but when i try to start a TCP server with the “AT+SCON=O,TSN,80,0” command, it’s not working anymore !
no really big modification on my software, on these functions, since many time …
what i notice when i spy on the UART lines, is that :
on my board : after send the AT+SCON command, i receive the echo back correctly, then about 100ms later a “[OK]” … then nothing else …
on my EVB board, after send the AT+SCON command, i see the echo back, then some sec later, the “[LISTEN 0]” reply indicate that the socket 0 is open, then the [OK] !!
again, this functionality on my application was working perfectly since many weeks !.. suddenly, since 2 days, it fail …
i use the 22.214.171.124 fw on my application board and my EVB.
i already try to factory reset the module (back to 126.96.36.199) then burn the last fiwrmware 188.8.131.52
thanks for any suggestions… regards