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Version 2.7

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@projectgus projectgus released this 18 Jul 05:03
· 973 commits to master since this release
v2.7
1319c49

Features

  • New option write_flash --flash-size keep will keep whatever flash size is set in the bootloader header, matching the behaviour of --flash-mode keep and --flash-speed keep. The default is still --flash-size detect but may be changed to keep in a future major update, to be consistent with the other two options.
  • write_flash no longer updates the flash header if the file being written to the bootloader offset isn't a valid image file for the chip. This is useful for flashing pre-encrypted data to ESP32s, where the image file contains ciphertext.
  • esptool now always prints the detected crystal frequency (26MHz or 40MHz) as part of general chip information, and will warn if the detected frequency deviates by an unexpected amount.
  • Passing arguments to main() from Python is now documented in the README (#408)

Bug Fixes/Changes

  • elf2image --sha256-offset will now only write the ELF SHA-256 to this offset if the existing data is all zeroes. Otherwise a warning is printed.
  • Improved the error message if esptool searches all serial ports and finds nothing. (#401)

ESP32 Only

Features

  • New write_flash --encrypt option that works with the new Development Mode flash encryption that will be the default flash encryption development workflow in ESP-IDF V4.0.
  • espefuse.py summary --format json will print a JSON dictionary of efuse summary data (#436)
  • espefuse.py burn commands now set the efuse timing before burning, in line with recent ESP32 TRM update.
  • espsecure.py key operations now support --keylen argument, allowing 192-bit keys for ESP32s with 3/4 Coding Scheme set.
  • espsecure.py encryption and decryption speed substantially improved. (#416)

Bug Fixes/Changes

  • FLASH_CRYPT_CNT efuse is now defined as 7 bits wide, as eight bit is not used by flash encryption hardware.

ESP8266 Only

Bug Fixes/Changes

  • Flasher stub is now built with gcc 5.2.0 toolchain.

Thanks to @grandcat, @darkfader, @tim-nordell-nimbelink, @sbertrand-witekio, @marcelstoer, @eykamp, @cclauss for contributing to this release.

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