Mac address lost after firmware update

Question

Hello, I followed the instructions for Serial Line-APP+DCT update from here : wizwiki.net/wiki/doku.php?id=pro … re_upgrade but unfortunately the update seems to reset the MAC address. I am testing with 5 wizfi250 modules now, but when the project goes throughe there will be 100’s of modules. How can I update without loosing the mac address ? Startup info before update : (I use MMSG=3 for getting debug log) Platform BCMUSI11 initialised Started ThreadX v5.5 Initialising NetX v5.6 Creating Packet pools Starting Wiced v2.4.0 WWD SDIO interface initialised WLAN MAC Address : 00:08:DC:1C:D5:EA WizFi250 Version 1.0.3.3 (WIZnet Co.Ltd) Startup info AFTER update to 1.0.4.2: (I use MMSG=3 for getting debug log) Platform BCMUSI11 initialised Started ThreadX v5.5 Initialising NetX v5.6 Creating Packet pools Starting Wiced v2.4.0 WWD SDIO interface initialised WLAN MAC Address : 00:08:DC:00:00:00 WizFi250 Version 1.0.4.2 (WIZnet Co.Ltd) I can set it back using AT+MMAC command, that works but that is not practical. AT+MMAC=00:08:DC:1C:D5:EA [OK] Nothing is run Platform BCMUSI11 initialised Started ThreadX v5.5 Initialising NetX v5.6 Creating Packet pools Starting Wiced v2.4.0 WWD SDIO interface initialised WLAN MAC Address : 00:08:DC:1C:D5:EA WizFi250 Version 1.0.4.2 (WIZnet Co.Ltd) When we buy new modules, will they have 1.0.4.2 from the factory? Thanks S

ssekim · Answer

Hello As you did, after F/W upgrading, you should write mac address using <AT+MMAC> command. And, if you order the modules with a F/W version to WIZnet or distributor, you can get the modules with the F/W as you want. Regards.

phil31 · Answer

in fact you lose the MAC add when you do a factory settings … FUNCTION pin toggle 3 time regards

serdesk · Answer

is there a way, using smartscript, to upgrade only the firmware, and leave the settings intact ? In fact I never want to lose the stored settings, can I make the readonly (hardware wise) ?

phil31 · Answer

from what i understand, it’s only when you do a FACTORY RESTORE not during OTA feature

serdesk · Answer

okay thanks phil I do firmware upgrading over serial line. can I upgrade the firmware without losing settings in some way?

phil31 · Answer

not totally sure but think that download OTA or by UART … do same job … : that do not erase MAC adr

ssekim · Answer

There are some flash bank in WizFi250. APP : WizFi250 F/W DCT : MAC Address, Configuration data, … Please refer to the below link. http://wizwiki.net/wiki/ doku.php?id=products:wizfi250:wizfi250pg:firmware_upgrade BTW, please note that if there are some major-changes in WizFi250-FW, you should re-input mac address using AT+MMAC=… Regards,

serdesk · Answer

Thanks for explaining, so I’d have to use ‘Flash Write(app)’ instead of ‘Flash Write(all)’ in WizSmartScript ?

ssekim · Answer

It’s case by case. Anyway, if you use ‘Flash Write(all)’, you should re-input mac address using AT+MMAC=… Thanks…