NAME

       esptool - ESP8266 and ESP32 ROM Bootloader Utility

DESCRIPTION

       usage: esptool [OPTION] COMMAND

   command arguments:
       Run esptool {command} -h for additional help

       load_ram
              Download an image to RAM and execute

       dump_mem
              Dump arbitrary memory to disk

       read_mem
              Read arbitrary memory location

       write_mem
              Read-modify-write to arbitrary memory location

       write_flash
              Write a binary blob to flash

       run    Run application code in flash

       image_info
              Dump headers from an application image

       make_image
              Create an application image from binary files

       elf2image
              Create an application image from ELF file

       read_mac
              Read MAC address from OTP ROM

       chip_id
              Read Chip ID from OTP ROM

       flash_id
              Read SPI flash manufacturer and device ID

       read_flash_status
              Read SPI flash status register

       write_flash_status
              Write SPI flash status register

       read_flash
              Read SPI flash content

       verify_flash
              Verify a binary blob against flash

       erase_flash
              Perform Chip Erase on SPI flash

       erase_region
              Erase a region of the flash

       version
              Print esptool version

   optional arguments:
       -h, --help
              show this help message and exit

       --chip, -c {auto,esp8266,esp32}
              Target chip type

       --port PORT, -p PORT
              Serial port device

       --baud BAUD, -b BAUD
              Serial port baud rate used when flashing/reading

       --before {default_reset,no_reset}
              What to do before connecting to the chip

       --after, -a {hard_reset,soft_reset,no_reset}
              What to do after esptool is finished

EXAMPLES

       Flash Espressif AT v1.4 firmware to an ESP-12S board:

              esptool   write_flash   --flash_mode   dio   --flash_size   4MB-c1   0x00   boot_v1.7.bin   0x1000
              at/1024+1024/user1.2048.new.5.bin 0xfe000 blank.bin  0x3fc000  esp_init_data_default.bin  0x3fe000
              blank.bin

       Display ESP32 efuse state summary:

              espefuse --port /dev/ttyUSB0 summary

       Generate a flash encryption key:

              espsecure generate_flash_encryption_key key.bin

       Burn the key to the device (WARNING: one time only operation):

              espefuse --port /dev/ttyUSB1 burn_key flash_encryption key.bin

       Encrypt flash data:

              espsecure   encrypt_flash_data   --keyfile   key.bin  --address  0x10000  -o  my-app-encrypted.bin
              my-app.bin

AUTHOR

       esptool.py was started by Fredrik Ahlberg as an unofficial community  project,  currently  maintained  by
       Angus  Gratton  and  supported by Espressif Systems (Shanghai) PTE LTD. This manual page was generated by
       Milan Kupcevic <milan@debian.org> for the Debian project and can be used by others.

REPORTING BUGS

       Review: <https://github.com/espressif/esptool/#troubleshooting>
       Known issues: <https://github.com/espressif/esptool/issues>
       Report new issues at: <https://github.com/espressif/esptool/issues/new>

COPYRIGHT

       Copyright © 2014-2016 Fredrik Ahlberg,  Angus  Gratton,  Espressif  Systems  (Shanghai)  PTE  LTD,  other
       contributors  as  noted.   License GPLv2+: GNU GPL version 2 or later <http://gnu.org/licenses/gpl.html>.
       This is free software: you are free to change and redistribute it.  There is NO WARRANTY, to  the  extent
       permitted by law.

SEE ALSO

       esptool(1), espefuse(1), espsecure(1)

esptool.py 2.1                                    November 2017                                       ESPTOOL(1)