Core
- Add function to know last reset reason.
- Allow control of enabling debug and debug level from IDE
- Add espduino board
- Rework StreamString::write to use String internal buffer directly (#1289)
- Add function to measure stack high water mark
- Fix RAM corruption caused by our hook of register_chipv6_phy(init_data*).
- Optimize PWM interrupt handler for better precision
- Add warning levels configurable through Preferences
- SPIFFS: check if path length is valid (#1089)
- Set CPU frequency before running setup
- Add core_esp8266_features.h to be able to detect the features and libraries included in the ESP core
- Add ESPino to supported boards
- Fix pwm first step getting skipped
- Update SDK to 1.5.1_16_01_08
- Bufferless and interruptless HardwareSerial
- HardwareSerial: allow mapping of UART0 TX to GPIO2
- Add 128K SPIFFS for 512KB modules
- Reduce stack usage by Print::printf
- Fix a crash in String::changeBuffer()
- Implement static initialization guards (#500)
- Implementation of Tone API using timer1
- Use umm_malloc for heap management
- Configurable I2C clock stretching limit
- Add a new board entry for the SparkFun Thing Dev
Libraries
- ESP8266HTTPClient: add CHUNKED encoding support (#1324)
- Fixed crash bug with mDNS where a string buffer could be used uninitialized
- Add WiFi TX power control
- Add WiFi sleep management
- Allow to hook into WiFi events from sketch
- Allow setting TCP timeout
- Add setSleepMode + getSleepMode and setPhyMode + getPhyMode to WiFi
- Update GDBStub library with the source of esp-gdbstub
- Servo: fix detach and attach
- ESP8266mDNS: refactoring, add TXT support
- Add HTTP Basic Auth to WebServer and libb64 (base64) to core
- Fix link-time dependency of ESP8266WebServer on SPIFFS (#862)
- Allow setting client side TLS key and certificate
- Replace chain of UDP pbufs with a single pbuf before sending (#1009)
- Unique Built-In libraries library.properties name
- Improvements for MD5Builder with Stream
- ESP8266SSDP: fixing TTL to 2 per spec
- ESP8266WebServer: a content length of zero should also be sent
- Use SoftwareSerial version 2.2
- EEPROM: optimised
_dirtyflag - ESP8266mDNS: advertise all hosted services
- Remove bundled OneWire - ESP8266 support has been merged in the official OneWire sources
- WiFiClientSecure: don't panic if memory allocation fails
- Verify domain name in WiFiClientSecure::verify
- Speed up WiFi.hostByName when the hostname is actually an IP
- Fix WiFi scan issue (#1355)
- Workaround for LwIP not handling ERR_ABRT
- Servo value read and write fixes
Tools
- espota.py: add support for manually selecting ip and port for host side
- Update esptool to 0.4.8
- Make espota compatible with python 3.5