EnglishFrenchSpanish

OnWorks favicon

esptool - Online in the Cloud

Run esptool in OnWorks free hosting provider over Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

This is the command esptool that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

PROGRAM:

NAME


esptool - create and flash firmware files to ESP8266 or ESP32 chips

SYNOPSIS


esptool [FLASH OPTION]...
esptool [CREATION OPTION]...

DESCRIPTION


Flash firmware files to ESP8266 or ESP32 boards with ability to automatically put certain
boards into UART bootloader programming mode. Or, extract code sections from ELF
executable files to create firmware files for ESP chips.

OPTIONS


Flash:
-cp <device>
Select a serial port device to communicate with an ESP chip. Default is
/dev/ttyUSB0 on Linux, COM1 on Windows and /dev/tty.usbserial on Mac OS X.

-cb <baudrate>
Select the baud rate. Default is 115200.

-ca <address>
Flash memory address to upload the data to. Default is 0x00000000.

-cf <filename>
Upload the file to flash memory. Serial communication parameters and flash memory
address must precede this argument.

-cp <size>
Pad last written section to the given size, in bytes.

-cc <chip>
Select chip to upload to. Currently supported values are: esp8266 (default), esp32.

-cd <board>
Reset board into bootloader mode. Default is none.

Resetting methods:
nodemcu
GPIO0 and RESET are controlled by two NPN transistors as implemented in NodeMCU
devkit.

wifio TXD controls GPIO0 via a PNP transistor, while DTR controls RESET via a capacitor.

ck RTS controls RESET or CH_PD, while DTR controls GPIO0;

none No DTR/RTS manipulation.

Firmware creation:
-eo <filename>
Open an ELF object file, parse it and cache information found therein. Only one
input file could be opened at a time.

-es <section> <filename>
Read the given section from currently opened input file and make raw dump into the
specified file.

-ec Close the currently opened input file.

-bo <filename>
Prepare a new firmware image file for writing.

-bm <qio|qout|dio|dout>
Set the flash chip interface mode. Default is QIO. This parameter is stored in the
firmware image header along with the flash size and flash frequency. ROM bootloader
in the ESP chip uses this info to know how to talk to the flash memory chip.

-bz <512K|256K|1M|2M|4M|8M|16M|32M>
Set the flash chip size. Default is 512K.

-bf <40|26|20|80>
Set the flash chip frequency in MHz. Default is 40M.

-bs <section>
Read the specified section from the input file and append it to the firmware image.
The sections will appear in the same order as the -bs options appear on the command
line.

-bc Flush the content into the firmware image and close the file.

Other:
-v Display verbose informational messages. Add more v's to increase verbosity level,
e.g. -vv, -vvv.

-q Suppress informational messages.

--help Display help.

--version
Display program version information.

EXAMPLES


Flash Lua script firmware to a NodeMCU board:

esptool -cd nodemcu -cf nodemcu_integer_0.9.5_20150318.bin

Flash MicroPython for ESP8266 firmware to a Huzzah or EzSBC ESP board: First reset the
board into flash programming mode. Holod GPIO0/Flash button and press reset button,
release the reset button and finally release the GPIO0/Flash button. Then run the
following command:

esptool -cf firmware-combined.bin

Flash Espressif AT v0.50 firmware to an ESP board: First manually reset the board into
flash programming mode or use correct -cd option, then run:

esptool -ca 0x00000 -cf noboot/eagle.flash.bin -ca 0x40000 -cf
noboot/eagle.irom0text.bin -ca 0x3e000 -cf blank.bin -ca 0x7c000 -cf
esp_init_data_default.bin -ca 0x7E000 -cf blank.bin

Create firmware files from app.elf. Note the option for 4M flash size.

esptool -bz 4M -eo app.elf -bo app_00000.bin -bs .text -bs .data -bs .rodata -bc
-ec -eo app.elf -es .irom0.text app_40000.bin -ec

Then, flash the created firmware to the board:

esptool -cf 00000.bin -ca 0x40000 -cf 40000.bin

Use esptool online using onworks.net services


Free Servers & Workstations

Download Windows & Linux apps

  • 1
    Avogadro
    Avogadro
    Avogadro is an advanced molecular
    editor designed for cross-platform use
    in computational chemistry, molecular
    modeling, bioinformatics, materials
    science and ...
    Download Avogadro
  • 2
    XMLTV
    XMLTV
    XMLTV is a set of programs to process
    TV (tvguide) listings and help manage
    your TV viewing, storing listings in an
    XML-based format. There are utilities to
    do...
    Download XMLTV
  • 3
    strikr
    strikr
    Strikr Free Software project. Artifacts
    released under a 'intent based'
    dual license: AGPLv3 (community) and
    CC-BY-NC-ND 4.0 international
    (commercial)...
    Download strikr
  • 5
    GIFLIB
    GIFLIB
    giflib is a library for reading and
    writing gif images. It is API and ABI
    compatible with libungif which was in
    wide use while the LZW compression
    algorithm was...
    Download GIFLIB
  • 6
    Alt-F
    Alt-F
    Alt-F provides a free and open source
    alternative firmware for the DLINK
    DNS-320/320L/321/323/325/327L and
    DNR-322L. Alt-F has Samba and NFS;
    supports ext2/3/4...
    Download Alt-F
  • More »

Linux commands

  • 1
    4s-queryJ
    4s-queryJ
    4s-query � Run SPARQL queries on a
    4store storage backend ...
    Run 4s-queryJ
  • 2
    4ti2-circuits
    4ti2-circuits
    4ti2 - software package for algebraic,
    geometric and combinatorial problems on
    linear spaces ...
    Run 4ti2-circuits
  • 3
    cpufreq-set
    cpufreq-set
    cpufreq-set - A small tool which allows
    to modify cpufreq settings. SYNTAX:
    cpufreq-set [options] DESCRIPTION:
    cpufreq-set allows you to modify cpufreq
    setting...
    Run cpufreq-set
  • 4
    cpufreqd-get
    cpufreqd-get
    cpufreqd-get - Issues "get" commands to
    cpufreqd. SYNTAX: cpufreqd-get [-l]
    PARAMETERS: -l list applied Profiles for
    all cpus. DESCRIPTION: cpufreqd-get
    issues...
    Run cpufreqd-get
  • 5
    gammu
    gammu
    gammu - Does some neat things with your
    cellular phone or modem. ...
    Run gammu
  • 6
    ganglia2pcp
    ganglia2pcp
    ganglia2pcp - import ganglia data and
    create a PCP archive ...
    Run ganglia2pcp
  • More »

Ad