NAME

       espefuse - ESP32 efuse get/set tool

DESCRIPTION

       usage: espefuse [OPTION] COMMAND

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

       dump   Dump raw hex values of all efuses

       summary
              Print human-readable summary of efuse values

       burn_efuse
              Burn the efuse with the specified name

       read_protect_efuse
              Disable readback for the efuse with the specified name

       write_protect_efuse
              Disable writing to the efuse with the specified name

       burn_key
              Burn a 256-bit AES key to EFUSE BLK1,BLK2 or BLK3 (flash_encryption, secure_boot).

       set_flash_voltage
              Permanently  set  the  internal  flash  voltage  regulator to either 1.8V, 3.3V or OFF. This means
              GPIO12 can be high or low at reset without changing the flash voltage.

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

       --port PORT, -p PORT
              Serial port device

       --before {default_reset,no_reset,esp32r1}
              What to do before connecting to the chip

       --do-not-confirm
              Do not pause for confirmation before permanently writing efuses. Use with caution.

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                                      ESPEFUSE(1)