Boot mode/putty

Question

Hello, I follow the instructions of the youtube video to enter boot mode but with NO success. As the module is powered on I plug the connector to jumper 3 , press the reset button but only the LED 4 lights up and not LED 3 as well. Any ideas? Also when I open putty I open a session with the 115200, 8, 1, N settings then at the screen I suppose to write it does not accept any letters! I type and nothing shows on screen! Any ideas on that? which terminal server software they use in the youtube video? Also I opened the firmware update tool and cannot find the wizfi250. Do I need to install additional drivers? Thank you

cliff · Answer

Hello, Well…I think, you should re-check that. 900×696 527 KB There’s a problem with the red box, right? If it so, please check status from following. Mode LED Indicate Data/Command Mode LOW(ON) : Data Mode HIGH(OFF) : Command Mode Wi-Fi LED Indicate Wi-Fi Association LOW(ON) : Wi-Fi is associated HIGH(OFF) : Wi-Fi is not associated About terminal program, I suppose, it was acts on data mode. If you want to know about it detailed, please check following. [url]http://wizwiki.net/wiki/doku.php?id=products:wizfi250:wizfi250pg:start#command_mode_data_mode[/url] Also, terminal program is used in youtube video is “Helcules”. And following is wizfi250’s firmwate update tool and files. [url]http://wizwiki.net/wiki/doku.php?id=products:wizfi250:wizfi250firmware:start[/url] Please check again about that. Thanks, regards.

soellicha · Answer

Hello, Thanks for the reply I put the jumper for boot mode, and only the wifi LED is ON , is this correct? In device manager I get “unknown device” - FT232R USB UART and no association with a COM port, so I cannot communicate through putty. ARE there any drivers for the wizfi? 3.I have managed to send data to wizfi from MCU when I send “AT” I get a response “++AT” when I send “AT\r” I get a response “error invalid input” when I send anything else I do not get a response, even if I send “AT+UART=?” ANY IDEAS? latest update when I send AT commands and listen for a response I get null value -like nothing. So if I send to wizfi “AT\r” and get an invalid response, THEN what is a valid command? Thank you

cliff · Answer

Hello, If you set the boot mode, it will. But, if you don’t that, you can see result like on the video. I will attach driver file on your e-mail. Please check it after install that. Well…You should check if it is boot mode. AT command not operate on boot mode. Thanks, regards.

soellicha · Answer

Hello Cliff Thanks for the reply What video do you mean? I set the boot mode but maybe the driver is the problem. *edit installed the driver and managed to upgrade wizfi module! I downloaded the driver but has extension of .zzz HOW do I use that? ( edit FIXED is OK now I changed the extension to ZIP - extracted it and worked THANKS!!! ) When I send the AT commands only the wifi LED is on the MODE is off, is this correct? Also I try to send AT commands from the MCU with both LEDs off MODE & WIFI and I get no response!!! On which FORMAT should I send the AT commands? So far I send as string ( “AT” ) should I send ( "A,T\r) ? should I send as ascii number? ( 65 , 84 ) ? 65 for A and 84 for T ? What about the comma? Thank you!

cliff · Answer

Hello, I mean the youtube video for instruction. It’s a good thing that. First, I already explaned about operation of LED. AT command operates in “command mode”. It doesn’t matter “AT” or “AT
”. Both of them was handled by WizFi250. I do not know which MCU to use, but it might be a good idea to analyze the WizFi250 source in the Arduino Library. If you need it, you can get to follwing. github.com/Wiznet/WizFi250_arduino_library Thanks, regards.