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 a binary file (bootloader or application)

       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

       merge_bin
              Merge multiple raw binary files into a single file for later flashing

       get_security_info
              Get some security-related data

       version
              Print esptool version

   options:
       -h, --help
              show this help message and exit

       --chip {auto,CHIP}
              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,usb_reset,no_reset,no_reset_no_sync}
              What to do before connecting to the chip

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

       --no-stub
              Disable launching the flasher stub, only talk to ROM bootloader. Some features will
              not be available.

       --trace, -t
              Enable trace-level output of esptool interactions.

       --override-vddsdio
              Override ESP32 VDDSDIO internal voltage regulator (use with care)

       --connect-attempts CONNECT_ATTEMPTS
              Number of attempts to connect, negative or 0 for infinite. Default: 7.

EXAMPLES

       Display device features, SPI flash manufacturer and device ID:

           esptool flash_id

       Flash ESP8266 Espressif AT v1.6.2 firmware to ESP-WROOM-02 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_v08.bin 0x3fe000 blank.bin

       Flash ESP32 Espressif AT v1.1.1 firmware to ESP-WROOM-32 board:

           esptool write_flash --flash_mode dio --flash_freq 40m --flash_size detect 0x1000 bootloader/bootloader.bin 0x20000 at_customize.bin 0x21000 customized_partitions/ble_data.bin 0x24000 customized_partitions/server_cert.bin 0x26000 customized_partitions/server_key.bin 0x28000 customized_partitions/server_ca.bin 0x2a000 customized_partitions/client_cert.bin 0x2c000 customized_partitions/client_key.bin 0x2e000 customized_partitions/client_ca.bin 0xf000 phy_init_data.bin 0x100000 esp-at.bin 0x8000 partitions_at.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 has been produced 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  ©  2014-2017  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)