ESP8266 Community Forum

- Wed Dec 09, 2015 2:38 am #36053 Greetings to all of you!

I purchased a new esp8266-01 and using it with FTDI232 (Not Arduino).

When I used it with factory firmware, I was getting the output at baud rate 115200 -

Code: Select allets Jan 8 2015,rst cause:4, boot mode:(3,6)
wdt reset
load 0x40100000, len 24444, room 16
tail 12
chksum 0xe0
ho 0 tail 12 room 4
load 0x3ffe8000, len 3168, room 12
tail 4
chksum 0x93
load 0x3ffe8c60, len 4956, room 4
tail 8
chksum 0xbd
csum 0xbd
ready

(Something like the above text). But it kept on displaying in an infinite loop. It didn't let me enter the AT command. Looks like it was resetting continuously. I was using putty terminal.

When the problem didn't solve, I updated the firmware by using Nodemcu flasher.

The Flasher updated the firmware successfully. It didn't show any error.

But the problem is, now I am not getting any kind of output on the serial window. I tried changing baud rate from 115200 to 9600 and all the other possible rates. I checked out my Rx, Tx cable. But not getting any output.

When I use nodemcu flasher, the blue light blinks in the esp module. It also blinks when I plug in my ft232 to the computer. But not when I open terminal.

Regarding power supply, I think ft232 is providing the required voltage and current. Although I tried using external battery too. If power is the problem then it shouldn't have displayed output at the first time I used esp with factory firmware.

Please guide me with this issue.

Thanks

- Wed Dec 09, 2015 8:24 pm #36117 Hello!
The problem is solved and the module is working great.

After google everything I could, I removed the nodemcu firmware and uploaded the AT firmware. The output revert back to the infinite loop of the above code. Then I checked out that the problem lies with the inability of the ftdi232 in providing sufficient current which lead to the module resets. So I used external power supply and it is working absolutely normal.

Thank you