Problem loading latest AT firmware

jrullan
Posts: 2
Joined: Wed Sep 13, 2017 3:27 am

Problem loading latest AT firmware

Postby jrullan » Fri Sep 15, 2017 9:41 am

Hi,

I'm kind of a newbie to the ESP8266 with regards to loading the newest AT firmware.
I have tried unsuccessfully to load the newest 2.1.0 AT bin into my ESP.
I'm using the RobotDyn Arduino Uno + ESP8266 board http://robotdyn.com/catalog/boards/uno_wifi_r3_atmega328p_esp8266_usb_ttl_ch340g_micro_usb/.

I followed several blogs and the documentation, and downloaded the firmware from https://github.com/espressif/ESP8266_NO ... master/bin

From there I picked the following files:
blank.bin
boot_v1.7.bin
esp_init_data_default.bin

For the user bin, there are two subdirectories, I used the binary from https://github.com/espressif/ESP8266_NO ... .new.2.bin

Here is the screenshot of the ESP download tool:

Image

And the download log looks like this:

Image

One funny thing I noticed is that the log shows it erases the flash in several places but it's missing a writing message. I expected it to print out some message like "writing at ...".
It didn't show any error either so I was under the impression it worked..

Then after this operation completes the ESP it seems it didn't write the firmware at all.
When I connect to the serial terminal, I can only see data @ 76800 baudrate, instead of at 115200, and only this message shows up:

Image

Can anyone tell me what's wrong?

Her Majesty
Posts: 202
Joined: Mon Oct 27, 2014 11:09 am

Re: Problem loading latest AT firmware

Postby Her Majesty » Fri Sep 15, 2017 11:50 am

Maybe you can have a try with changing the order of bin file downloading.
Put the blank.bin in 0xfe000 to be the first one on the flash download tool.

jrullan
Posts: 2
Joined: Wed Sep 13, 2017 3:27 am

Re: Problem loading latest AT firmware

Postby jrullan » Fri Sep 15, 2017 10:28 pm

Thanks for your reply.

That helped me start digging a bit more, but in the end I found that apparently I had a corrupted copy of the files.
I downloaded the full zip file from github, then manually selected the files and downloaded again.

Just in case, I moved all blank.bin downloads to the top and then reflashed, and it worked.

:D

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