i use the WIZFI250 evaluation board with a CPU development board since some weeks.
i’m really happy with this product, work like a charm
the link between WIZFI250 and CPU is UART @ 115200bps.
with my WIZFI250 evalboard, i can without trouble update the firmware, using the AT+FOTA command.
here it is the log :
WizFi250 Version 22.214.171.124 (WIZnet Co.Ltd)<CR><LF> AT+FOTA<CR> AT+FOTA<CR><LF> [OK]<CR><LF> <CR><LF> <CR><LF> [OTA Upgrade Handler]<CR><LF> <CR><LF> <CR><LF> >>> Start OTA >>>>>>>>>>>>>>>><CR><LF> <CR>
now, i design my own PCB with a WIZFI250-CON (only ufl connector).
although my purchase is recent, the module i orderd are with old firmware version (126.96.36.199)
so for sure i try to update it
i run the AT+FOTA command with my CPU then here it is the log :
WizFi250 Version 188.8.131.52 (WIZnet Co.Ltd)<CR><LF> AT+FOTA<CR> AT+FOTA<CR><LF> [OK]<CR><LF>
i never receive the rest of the message ([OTA Upgrade … to the end of my first dump)
(don’t see with my logic analyzer spy !)
Please any body can suggest me something ? why i don’t see all the dump (the one i see with the evaluation board) ???
my own design/board don’t run in OTA mode
that make me crazy since 3 days ! … please any advice ?
FUNCTION and BOOT pins are tired to 3.3V by my CPU.
i work with hardware flow control enable, all other thing works as expected !
i do the test with the FUNCTION pin as describe here : http://wizwiki.net/wiki/doku.php?id=products:wizfi250:wizfi250pg:io_pin-function_pin_usage
i receive the frst line “Set OTA mode” … then NOTHING ELSE !!!
i’m crazy …
for sure i double , triple and even 1000’s check all signals and RTS/CTS lines .
again all others things works perfectly !!!