AT and IoT_Demo firmware not functioning

[Fadi]

Hi,

I have successfully updated my ESP8266 ESP-01 module yesterday from version 0.91 to 0.922 (downloaded from one of the sites that sells the modules)
I later used the official VM found here, compiled AT firmware and IoT_Demo firmware.

I uploaded the IoT_Demo firmware to the board successfully, only to remember that it may not utilize UART for feedback, so I uploaded the AT firmware
so that I can start testing and do little modifications later.

The module doesn't respond to any AT command and there is no output on the terminal.
I tried changing baudrates and the one that worked was 75000.
I get the following message on uart terminal:

"
ets Jan 8 2013,rst cause:2, boot mode:(3,4)

load 0x40100000, len 23304, room 16
"

but uart_init() was set at 115200 as per AT source code, and I didn't change anything in the code, and it compiled without errors.

Can you please help me trouble shoot the problem?

VCC supplied 3.3v
TX/RX are 3.3v TTL levels
CH_PD 3.3v (HIGH)
RST is GROUND

I was only successful in getting the above message on UART with this baudrate.

Thank you for your help

[costaud]

ets Jan 8 2013,rst cause:2, boot mode:(3,4)

load 0x40100000, len 23304, room 16

As far as I know, this print log is mostly caused by the spi flash r/w mode mismatching.

The default setting is that the spi flash port works in quad r/w mode , if the flash do not support this mode , the chip can not boot up correctly.

Please use the latest download tool and set the spi dout mode in config panel.
If it works , check the flash datasheet and confirm whether it supports quad r/w mode.

download_tool.png (62.35 KiB) Viewed 17757 times

[Fadi]

Thanks foe the reply.
I got an esp8266 esp-01 module already has onboard flash..etc
And if I flash 0.922 firmware using xtcom it works.

Are you sure i need to use this tool ? But what should I put for the clock?
Thanks

[Fadi]

Unfortunately it didn't work.
Same problem.
I even used the blank.bin and init*.bin to start fresh.

[costaud]

could you read the type number of the flash chip？

[Fadi]

costaud, please find the attached image.
Thanks

[muris]

Where can I download the ESP FLASH DOWNLOAD TOOL for Windows?
Thanks

[Fadi]

Where can I download the ESP FLASH DOWNLOAD TOOL for Windows?
Thanks

http://www.electrodragon.com/w/Wi07c

towards the end of the page, you should see a link to XTCom tool.
there is also another option, espTool.py (but needs python installed on windows, google for it easy to find I don't have the link handy)

[muris]

I am already using Python version, and XT COM is not working on my PC for some reason. I wanted to download the "ESP FLASH DOWNLOAD TOOL" that is shown in the screenshot in previous posts. Do you know where to get that one?

Here is the screenshot:

download/file.php?id=21

[Fadi]

hmmm I had this file from the extensive search that I did prior to ordering (and while waiting) for my module to arrive.
I can't find the link right this second sorry.
PM me your email, I can send it to you, but again it didn't work for me.