Version 0.1.0

v0.1.0 (2026-03-19)

✨ New Features

• esp32c61: Add large flash support (Jaroslav Burian - edb0e0b)
• security: add api to check flash is encrypted (erhankur - 96e788b)
• flash: Set flash size to maximum supported when ID is unknown (Jaroslav Burian - 70373a5)
• flash: Support custom SPI flash pin configuration (Jaroslav Burian - 6d9c71a)
• flash: Support eFuse SPI pin configuration (Jaroslav Burian - 334a201)
• flash: Add 4 byte flashing support for ESP32-P4 and ESP32-S3 (Jaroslav Burian - 6e7bb85)
• flash: Add support for 4 byte address flashing (Jaroslav Burian - af03c85)
• usb-otg: Finish the USB-OTG RX/TX support (Radim Karniš - b50a3ce)
• usb_serial_jtag: Add USB-Serial/JTAG transport layer support (Radim Karniš - 58272f8)
• add SHA256 hash calculation APIs (erhankur - f0827f5)
• set log level in runtime (erhankur - 6df67f1)
• Add asynchronous erase function (Jaroslav Burian - f7ce526)
• Add miniz rom wrappers (Jaroslav Burian - eff7a03)
• Add MD5 check ROM wrappers (Jaroslav Burian - 1b234e6)
• Disable Watchdogs when USB-Serial-JTAG is used (Jaroslav Burian - 3489324)
• Add CPU clock increase support (Jaroslav Burian - 3661a14)
• add support for the USB-CDC feature (Jaroslav Safka - ac03ab8)
• esp32p4 eco5 support (erhankur - b6f33c1)
• Add basic flashing support (Jaroslav Burian - 4101650)
• Add UART support (Jaroslav Burian - ec7beca)
• add support for security info (Jaroslav Safka - 4797c8e)
• add target soc_caps.h (erhankur - 709ef1e)
• add mem utils, for checking memory range types (Anton Maklakov - 10b0cfa)
• add soc header for targets (Anton Maklakov - 045250d)
• Add wrappers for UART RX/TX ROM funcs (Radim Karniš - c9b98d0)
• add S3 initial read support (Anton Maklakov - d1503e5)
• update structure for initial SPI Flash support (Anton Maklakov - f54ee9e)
• add ROM function wrappers (erhankur - cfcc920)
• Add initial error codes (Anton Maklakov - facae9e)
• add xtensa trax memory helpers (erhankur - 3c8a527)
• add libc rom linker files (erhankur - 56c7d97)

🐛 Bug Fixes

• esp32: save/restore SPI1 user register across flash operations (erhankur - 5a5be66)
• esp8266: Use custom flash config due to different ROM implementation (Jaroslav Burian - 3eb4aa1)
• esp32s2: wait for SPI0 idle using correct peripheral index (erhankur - f419d01)
• flash: wait for erase complete before returning from erase_area (erhankur - cef3cb3)
• flash: change erase_area function to support large flash mode (erhankur - 3718892)
• esp32c2: Improve crystal frequency detection by comparing to internal (Jaroslav Burian - 899c483)
• esp32h21: use correct ROM addresses for libc functions (erhankur - 983c4e0)
• esp32h4: Use the latest ld files and support clock init (Radim Karniš - 2019d1e)
• usb_serial_jtag: Use custom implementation of flush and tx as ROM flushes on newline character (Jaroslav Burian - aa2f920)
• flash: Wait for SPI0 to be ready when there is no HW arbiter (Jaroslav Burian - 280cac7)
• flash: Properly calculate timeout for data shorter than 1KB (Jaroslav Burian - 29e0730)
• flash: Do not save flash ID to ROM read only structure (Jaroslav Burian - 49cc6b5)
• esp8266: Fix flash write enable by custom implementation instead of ROM (Jaroslav Burian - c8a6296)
• esp8266: Properly attach SPI flash (Jaroslav Burian - b56f101)
• esp32s3: Fix LoadStoreException during flashing over USB OTG (Jaroslav Burian - 2541cc9)
• esp32s3: APB frequency is equal to XTAL frequency when PLL is not used (Jaroslav Burian - 5e8492b)
• md5: Use proper context structure for esp32c2 (Jaroslav Burian - a30a4d5)
• md5: Use proper context structure for esp32c2 (Jaroslav Burian - 46ecbd5)
• esp32c3: Use XTAL frequency for UART clock which is default in ROM (Jaroslav Burian - ab85095)
• esp32c3: Remove return causing security info unsupported feature error (Jaroslav Burian - bcc2c2e)
• esp32c2: Detect APB frequency even without clock initialization (Jaroslav Burian - 46deae2)
• esp32s3: Properly detect APB frequency (Jaroslav Burian - da588ec)
• usb-otg: Add missing ld aliases (Radim Karniš - 7615fe8)
• clock: Wait for the clocks to stabilize after init (Radim Karniš - 545d100)
• log: log output aligned in flash.c (erhankur - 8b0183f)
• target: allow strong functions override weak ones (erhankur - 4382edd)
• esp8266: Add missing flash function definitions and implement UART TX flush (Jaroslav Burian - e64d437)
• uart: Fixed initialization for the early stages for many chips (Anton Maklakov - 19bd30f)
• include: Make the headers includable from C++ (Roland Dobai - d7e68bc)
• add clock.c to esp32h21 build (erhankur - b943a84)
• Use correct clock for UART baudrate (Jaroslav Burian - e84786a)
• update copyright header (Anton Maklakov - 6c2970d)
• clean up error codes (Anton Maklakov - a58afdd)

📖 Documentation

• esp-stub-lib: add code conventions for include style (erhankur - fdf131d)
• add MAINTENANCE.md and link from README (Roland Dobai - 01cef04)

🔧 Code Refactoring

• aes_xts: Use common helper function to wait for register state (Jaroslav Burian - 05d54e6)
• move common flash functions to the common layer (erhankur - d8146e0)
• cleanup unused block/sector erase functions (erhankur - 4155edc)
• print flash logs as verbose or error (erhankur - 4443dcc)
• improve flash api returns (erhankur - c7a56aa)
• Simplify USB-Serial-JTAG code (Jaroslav Burian - 9471844)
• Make soc utils public (Jaroslav Burian - c75846d)
• move target interface to /include/target/ (Anton Maklakov - 4d26034)
• cleanup useless uart headers (erhankur - bcb85ef)