Version 4.7

New Features

• spi_connection: Support --spi-connection on all chips, allowing connection of an external flash
• esp32-s3: Support >16MB quad flash chips
• bin_images: add support for intel hex format images
• merge_bin: add support for uf2 format
• esptool: added esp32p4 target
• esp32p4: Stub flasher support
• espefuse: Support XTS_AES_256_KEY key_purpose for ESP32P4
• xip_psram: support xip psram feature on esp32p4
• elf2image: add ram-only-header argument
• rfc2217_server: Add hard reset sequence
• espefuse: Adds efuse ADC calibration data for ESP32H2
• espefuse: Update the way to complete the operation
• add support for get_security_info on esp32c3 ECO7
• loader: Added hints for some serial port issues when rising port error
• Add support for Python 3.12
• esp32c3: Support ECO6 and ECO7 magic numbers
• efuse: Update key purpose table and tests
• efuse: ESP32P4 adds ecdsa_key support
• espefuse: Add support for esp32p4 chip
• espsecure: Allow prompting for HSM PIN in read_hsm_config
• esptool: Add new packages for ESP32C3 and flash efuses
• esptool: Add tests for get_chip_features
• esptool: Add PICO package for ESP32S3 and flash/psram efuses
• get_security_info: Improved the output format and added more details

Bug Fixes

• flasher_stub: fix usb-serial-jtag enabled non-related intr source, improved stability
• esp32c2: Added get_flash_cap and get_flash_vendor
• testloadram: Windows assertion error
• fixed exit() to be used from the correct module
• esp32c2: Recommend using higher baud rate if connection fails
• test_esptool: Fixed connection issues on Windows
• esptool: Rephrase the --ram-only-header command message
• load_ram: check for overlaps in bss section
• tests/intelhex: make sure file is closed on Windows
• spi_connection: Unattach previously attached SPI flash
• espefuse: Fix ECDSA_FORCE_USE_HARDWARE_K for ECDSA key (esp32h2)
• loader: Could not open serial port message adjusted
• bin_image: Check only ELF sections when searching for .flash.appdesc
• Fix redirection of STDOUT
• autodetection: Remove the ESP32-S2 ROM class from get_security_info autodetection
• elf2image: fix text/rodata mapping overlap issue on uni-idrom bus chips
• expand file args: Correctly print the expanded command
• esp32-c2: Enable flashing in secure download mode

Code Refactoring

• stub_flasher: Cleanup, make adding new targets easier

Thanks to @20162026, @rretanubun, and others for contributing to this release!