ESP32DEVKIT V1 - A fatal error occurred: Timed out waiting for packet content

[rickitaly]

Hardware:

Board: ESP32 DEVKIT V1
Core Installation/update date: new
IDE name: Arduino IDE
Flash Frequency: 40Mhz
PSRAM enabled: ?no?
Upload Speed: 115200
Computer OS: Windows 10

Description:

Hi, i just got a new ESP32 that i am trying to flash without success.
This is an ESP32 DEVKITV1 i got from here:

I am trying to upload exactly the same sketch from Arduino IDE which i upload without problems on an ESP32 NODEMCU.
In this case of course the only difference is the setting of the Board in Arduino IDE because i select DOIT ESP32 DEVKIT V1.

This is what i get, all the times. I tried any possible combination of the BOOT and EN pushbuttons but always the same! I read all the posts here but no way to solve!
Someone can help? Thank you!

Debug Messages:

 ^

Lo sketch usa 1621478 byte (98%) dello spazio disponibile per i programmi. Il massimo è 1638400 byte.
Le variabili globali usano 74860 byte (25%) di memoria dinamica, lasciando altri 220052 byte liberi per le variabili locali. Il massimo è 294912 byte.
esptool.py v2.3.1
Connecting........_
Chip is ESP32D0WDQ6 (revision (unknown 0xa))
Features: WiFi, BT, Dual Core, VRef calibration in efuse
Uploading stub...
Running stub...
Stub running...
Configuring flash size...
Warning: Could not auto-detect Flash size (FlashID=0xffffff, SizeID=0xff), defaulting to 4MB
Compressed 8192 bytes to 47...

A fatal error occurred: Timed out waiting for packet content
A fatal error occurred: Timed out waiting for packet content```

[rickitaly]

As additional information, i tried also without using local USB and directly connecting to VIN, GND, TX/RX, pulldown GPIO12 and push BOOT at connecting step, still i get "A fatal error occurred: Timed out waiting for packet content"

[rickitaly]

Looking at serial monitor in Arduino IDE, when i push the BOOT i change from message

rst:0x10 (RTCWDT_RTC_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
flash read err, 1000
ets_main.c 371
ets Jun 8 2016 00:22:57

which is looping,
to this:

rst:0x10 (RTCWDT_RTC_RESET),boot:0x3 (DOWNLOAD_BOOT(UART0/UART1/SDIO_REI_REO_V2))
waiting for download

so i guess i am correctly in boot mode! but still no way to proceed with upload!

[komeemokkome]

I had a same problem with same board! Problem was that i was pulling GPIO2 to high. If GPIO2 is pulled high, it will not boot.

More info about esp32 pins: https://desire.giesecke.tk/index.php/2018/07/06/reserved-gpios/

From there you can read: "GPIO2 pin is used as a bootstrapping pin, and should be low to enter UART download mode. Make sure it is not pulled high by a peripheral device during boot or you will not be able to flash a firmware to the module!"

[rickitaly]

Hi, i tried also pulling GPIO2 to GND at boot and result is the same:

`esptool.py.exe erase_flash
esptool.py v2.6
Found 2 serial ports
Serial port COM3
Connecting......
Detecting chip type... ESP32
Chip is ESP32D0WDQ6 (revision 1)
Features: WiFi, BT, Dual Core, 240MHz, VRef calibration in efuse, Coding Scheme None
MAC: xxxx
Uploading stub...
Running stub...
Stub running...
Erasing flash (this may take a while)...

A fatal error occurred: Timed out waiting for packet content`

Any help? Thank you!

[lbernstone]

You are making a connection, but failing to transmit properly. Try a different cable, or reduce the transfer speed.

[rickitaly]

Thank you for your suggestion.
I could try with very short and good quality cable, on another port, on another pc, on another OS (ubuntu) but i always get this. Now i tried also lower speed (57600) but still "A fatal error occurred: Timed out waiting for packet content".
I have other esp32 (nodemcu) and i can flash in any way without issue.
Any other suggestion?
Thank you

[BaaridunNasr]

@rickitaly Any chance you have some peripherals at GPIO pins 6 through 11?

[rickitaly]

Nothing connected :-(

[BaaridunNasr]

These are the configs I use for the same board. Are you using the same?

[BaaridunNasr]

@rickitaly Also, you only need to press Boot from the "------" (dashed line) to the "......" (dotted line) when it says esptool.py from what I observed while using the Arduino IDE exclusively.

[rickitaly]

yes settings are the same and i do press the boot at connecting

…

________________________________ Da: Baaridun Nasr <notifications@github.com> Inviato: giovedì 7 febbraio 2019 07:30 A: espressif/arduino-esp32 Cc: rickitaly; Mention Oggetto: Re: [espressif/arduino-esp32] ESP32DEVKIT V1 - A fatal error occurred: Timed out waiting for packet content (#2415) @rickitaly<https://github.com/rickitaly> Also, you only need to press Boot from the "------" (dashed line) to the "......" (dotted line) when it says esptool.py from what I observed while using the Arduino IDE exclusively. — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub<#2415 (comment)>, or mute the thread<https://github.com/notifications/unsubscribe-auth/AshnmQ0EA5hglaB9tpFo2LqGlFDZGBN_ks5vK8f0gaJpZM4afP1X>.

[ozanoner]

@rickitaly have you managed to find a solution? I faced the same problem in our custom board.

[rickitaly]

No way I had to give up

[ozanoner]

Ok, thank you. I will share here if I can find a solution

[ozanoner]

@rickitaly In our case, the cause of the problem is GPIO12. it is pulled-up on our board which prevents flashing. See here for more info. Hope this helps for you too.