Release 3.0.2 Notes

(includes 3.0.1 and 3.0.0 release notes)

Core

Internal API: add comments and corrections (#8201)
String: Avoid copying past end of buffer in ::concat (#8198)
Call umm_init just before starting SDK (#8207)
Clean up use of "byte" as a type. uint8_t or (C++17) std::byte are better. (#8090)
Fix PRxxx printf format macros (#8222)

Libraries

Update to EspSoftwareSerial bug fix release 6.12.7 (#8195)
Fixes failing https connections to HelloServerBearSSL (w/MMU48KIRAM) (#8206)
Use valid categories in library.properties of bundled libraries (#8221)
Netdump printf fix (#8215)
Fix with NO_GLOBAL_INSTANCES (#8184)
Make multiple FS begin calls noops() SDFS/LittleFS (#8235)

CI

Copy released JSON to board URL, not new one (#8182)

Build system

Make mkdir.py work under python<3.5 (#8194)
Certificate and public keys automatic updater (#8218)
Use only installed Python on Windows (#8226)

Board definitions

Add wifi kit 8 to boards (#8190)

Release 3.0.1 Notes

Breaking Changes

BREAKING: "i2s.h" removed, I2S library added (#8108)

Core

Make String reallocation warning more descriptive (#8131)
Normalize core header's include guard. (#8110)
makeword: sync header and implementation (#8097)
Use optimal bundled library names (#8088) (#8098)
Added IRAM_ATTR to _stopPWM() so that digitalWrite() would work inside ISR. Fixes #8043 (#8044) (#8048)
makecorever.py: restore ARDUINO_ESP8266_GIT_VER even without .git/ (#8138)

IDE

Update debug level list link (#8172)
Add missing menu.UploadTool name definition (#8153)

Libraries - LittleFS

Re-add mklittlefs to package.json, fixing "ESP8266 LittleFS Data Upload" (#8060)
Don't crash when including LittleFS.h w/no FS (#8173)

Libraries - SD/SDFS

SDFS: fix AvailableForWrite: do not always return 0 when space is available (#8167)

Libraries - ESP8266httpUpdate

ESP266httpUpdate: remove dead API and fix doc (#8063)

Libraries - ESP8266WiFi

Fix stopAllExcept with WiFiClientSecure (#8136)
LwipIntfDev.h - apply static DNS config (#8076)

Libraries - SoftwareSerial

Update EspSoftwareSerial to bug fix release 6.12.6

Libraries - ESP8266HTTPClient

ESP8266HTTPClient: remove old example (#8111)
Change protocol detection so uppercase or lowercase works (#8137)

Toolchain

Update toolchain to gcc 10.3 w/patches (#8104) (#8103)
Update toolchain to fix pgm_read_float_unaligned (#8091)
Remove include and lib folders removed since 3.0.0 core (#8125)
Add errors on invalid/missing function return type (#8165)
GNU source: honoring libc requirements (#8147)

PlatformIO

PIO: use CCFLAGS for -Werror (#8175) (#8092)
Documentation: Note about options on PIO (#8174)

Documentation

Fix readthedoc python dependencies (#8166)
Documentation: Arduino IDE options: fix hyperlinks and format, options (#8158) (#8154)

CI / Release / Environment

Add code-spell spelling checks to CI (#8067)
Release script: protect bash variables and add logs, major/minor/rev macro addition, BASH fix (#8074) (#8126) (#8127) (#8168)
Remove some no longer applicable artifacts from .gitignore (#8170)

Release 3.0.0 Notes

Great additions

PoC cache configuration control (aka +16KB heap!) (#7060)
Hardware WDT Stack Dump Tool (#7010)
Update to GCC 10.2 (#7607)

Breaking: Deprecation - Removal

BREAKING: httpclient: remove deprecated API (#7617)
BREAKING: Update Arduino.h, remove TIM_DIV265 (#7440)
BREAKING: Remove lwip-v1.4 specific code (#7436)
BREAKING: Remove axTLS from code and documentation (#7437)

Breaking changes summary

BREAKING: WString: return bool instead of unsigned char (#7939)
BREAKING: wifi: remove pseudo-modes for shutdown, expose ::[resumeFrom]shutdown() (#7956)
BREAKING: Disable WiFi at boot by default (#7902, #7990, #7993)
BREAKING: base64::encode() compat with esp32: no newlines by default (#7910)
BREAKING: Use IRAM_ATTR in place of ICACHE_RAM_ATTR (#7921)
BREAKING: Upgrade to upstream newlib 4.0.0 release (64 bits time_t) (#7708)
BREAKING: Change servo defaults to safer defaults (#7023)
BREAKING: Add Print::availableForWrite method (#7658)
BREAKING: Change return EEPROM.end() to bool (#7630)
BREAKING: Change return type of channel() (#7656)
BREAKING: Change return type of RSSI() (#7657)
BREAKING: Add Wrong Password wifi status case (#7652)
BREAKING: analogWriteRange 8-bit default (#7456)
BREAKING: HTTPClient: RequestHandler: Pass String by const reference (#6583)

Boot

eboot: .RODATA, upstream uzlib, move CRC, save 112 bytes (#7844)
Update eboot to build with C17, not C99 standard (#7837, #7838)
Fix eboot crash with exception 28. ets_printf() should take pointer argument. (#7666)
Use 32b loads to set print strings (#7545)
Comment out verify step in eboot.c (#7468)

Core

BREAKING: WString: return bool instead of unsigned char (#7939)
ESP class should be a singleton: make all member functions static. (#8006)
Updated HWDT to use IRAM_ATTR instead of ICACHE_RAM_ATTR. (#8013, #8018)
Hardware WDT Stack Dump Tool (#7010)
WString: direct operator overloads instead of StringSumHelper (#7781)
Clean up ICACHE_RAM_ATTR in VM PR (#7924)
Added ESP32 compatible methods for setting/getting sleep mode (#7901)
Enable 128K virtual memory via external SPI SRAM (#6994)
Stream::send() (#6979, #7935, #7951, #7987, #7995)
[BREAKING] base64::encode() compat with esp32: no newlines by default (#7910)
BREAKING - Use IRAM_ATTR in place of ICACHE_RAM_ATTR (#7921)
OOM debug: warn about String reallocation (#7908)
OOM: avoid warn when calling *alloc(0) (#7909)
String: add missing long long operator implementations (#7888)
Support to reboot into UART download mode (#7854, #7897)
String: compatibility with 64 bits scalars (#7863)
Update toolchain to support std::remainder (#7849)
allow to set pin to OUTPUT_OPEN_DRAIN in analogWriteMode (#7841)
Add 24-bit mode to I2S (#7835)
Hexdump fix&update (#7831)
improve silicon aes_unwrap (#7773)
Supersede #3856, remove undef min/max (#7824)
Add stub for analogReference() (#7809)
UART: add yield (#7799)
BREAKING - Upgrade to upstream newlib 4.0.0 release (#7708)
Update to latest uzlib upstream (#7776, #7782)
i2s: adds i2s_rxtxdrive_begin(enableRx, enableTx, driveRxClocks, driveTxClocks) (#7748)
PoC cache configuration control (#7060, #7754, #7767, #7768, #7812, #7816, #7820, #7790)
Receiving no data in Updater is an error (#7729)
PROGMEM compatibility changes to String (#7724)
schedule_recurrent_function_us should be in iram (#7713)
Re-implement PWM generator (#7715, #7712, #7022, #7231, #7800, #7996)
WString: Optimize a bit (#7553)
Fix sntp_get_real_time prototype in header (#7707)
Provide String::indexOf for a char* needle (#7706)
Fix newlib to support <+-nn> timezone names (#7699, #7702)
BREAKING: Add Print::availableForWrite method (#7658)
settimeofday_cb: distinguish from user or sntp (#7637)
Add Copyright notice to Schedule.h (#7653)
BREAKING: Add Wrong Password wifi status case (#7652)
New flash writing method with offset/memory/size alignment handling (#7514)
Add missing sntp_init/sntp_stop (#7628)
Use direct member initialization instead of ctr initialisation (#7558)
Prevent rewriting Updater_Signing.h if content unchanged (#7627)
WString: c_str() returns null pointer after move (#7611)
WString: mark move ctor as noexcept (#7610)
sntp: use one time source and fix unsynchronized sntp time stamp (#7595)
Add clear method to IPAddress (#7586)
Check also if IP is not IPADDR_NONE (#7585)
Fix gzip+signed OTA error (#7577)
new w/ OOM now aborts by defaults, or throw an exception (#7536)
getCpuFreqMHz(): fix when F_CPU is not defined (#7554)
Updater MD5 cleanup on begin (#7534)
Add synthetic IntegerDivideByZero exception (#7496)
avoid circular #include dependence for PolledTimeout (#7356)
base64 class uses String, adding harmless #include (#7517)
sys/pgmspace.h: Refactor inline asm (#7510)
Add SerialEvent() callback to loop processing (#7505)
Remove warnings when building NoAssert (#7499)
BREAKING - analogWriteRange 8-bit default (#7456)
BREAKING - Pass String by const reference [3.0] (#6583)

Libraries - softserial

Maintenance release 6.12.3: better dependency declarations for Platformio (#8030)
EspSoftwareSerial 6.12.2: Inlining push() functions that must be in IRAM for calling from ISRs (#7986)
Bug-fix release 6.12.1: a documentation error was reported by a user; dropped bit-patterns that masked the stop-bit fixed. (#7938)
EspSoftwareSerial minor release 6.12.0 completes adaptation to new Stream::send() (#7923)
Minor EspSoftwareSerial release 6.11.7, for deprecated ICACHE_RAM_ATTR in upcoming ESP8266 Arduino core 3.0.0. (#7922)
EspSoftwareSerial, bump up Arduino library manager related files 6.11.6 (#7891)
Update to EspSoftwareSerial 6.11.5 (#7889)
EspSoftwareSerial bug-fix release 6.11.4 (#7862)
Update to EspSoftwareSerial 6.11.3: prepares for ESP8266 Arduino core PR 6979. (#7840)
EspSoftwareSerial 6.11.2: Delegate<> assign operators added. (#7815)
Minor EspSoftwareSerial release 6.11.1 (#7804)
Minor EspSoftwareSerial release 6.11.0 (#7802)
EspSoftwareSerial bug fix release 6.10.1: preciseDelay() could delay() for extremely long time, if period duration was exceeded on entry. (#7771)
EspSoftwareSerial 6.10.0: override keyword for recent Print::availableForWrite() addition (#7710)
EspSoftwareSerial 6.9.0: data/strings in flash alignment handling fix. Yielding during write() improvement. (#7604)

Libraries - FS

Update mklittlefs executable (#7906)
Track creation time of LittleFS FS (#7873)
Invalid read return value fix (#7817)
Update to SdFat 2.0.2, speed SD access (#7779)
Rationalize File timestamp callback (#7785)
Update to LittleFS v2.3 (#7787)

Libraries - Network

added ArduinoWiFiServer with send-to-all-clients functionality (#7612)
internal: rename ClientContext::wait_until_sent() to wait_until_acked() (#7896)
Added ESP32 compatible methods for setting/getting hostname (#7900)
AP & dhcp-server: fix uninitialized variables (#7905)
Netdump: Avoid UB and abort on nullptr buffer (#7822)
lwip2: use pvPortXalloc/vPortFree and "-free -fipa-pta" (#7793)
more lwIP physical interfaces (#6680)
Netump (#7527, #7659)
replace old Ethernet Arduino-library with v2, submoduled (#6812)

Library - WiFi

WiFi: clean up AP SSID setter & getter, support 32 chars (#7941)
[BREAKING] wifi: remove pseudo-modes for shutdown, expose ::[resumeFrom]shutdown() (#7956)
[BREAKING] Disable WiFi at boot by default (#7902)
Added broadcastIP method to WiFiSTA class (#7899)
WIFI_RESUME improve speed and example (#7877)
WiFiServer.cpp: Fix warning (#7755)
update documentation example (#7697)
Refactor WiFi scan example (#7655)
BREAKING: Change return type of channel() (#7656)
BREAKING: Change return type of RSSI() (#7657)
Reduce codesize of setOutputPower (#7572)

Library - TLS/SSL

Fix a warning (#8014)
Adding comment to ignore SSL certificate in sample code. (#7994)
Update Root Certificate in example (#7932)
Adds the method setSSLVersions() also to WiFiClientSecure in order to use that new feature. (#7925)
Add setSSLVersion call to SSL object (#7920)
Allow users to inherit and override CertStore (#7827)
Reduce BearSSL code size by not -O2 FSMs (#7807)
WiFiServerSecure: Cache SSL sessions (#7774)
WiFiClientSecure: use context (#7680)
Update to latest BearSSL as of Nov 2020 (#7732)
Add Stream loaders for BearSSL (#7675)
Catch and display SSL errors for fatal alerts (#7681)
Fix error when debug enabled but no port chosen (#7648)
Remove stray axtls refs, deprecated compat funcs (#7626)
Fix error message typo (#7581)
Update DigestAuthorization.ino (Simple example update) (#7579)
Update certs-from-mozilla.py (#7573, #7578)
Use root cert, not fingerprint for api.github.com (#7490)
Update FP for tls.mbed.org (#7479)
Change BSSL_CertStore test URL (#7370)
Update to BearSSL version lost in GCC10 update (#7453)

Library - Webserver

ESP8266WebServer: Add variadic template version of collectHeaders() (#7296)
Fix header FSM in webserver, fix Windows uploads (#7805)
ETag support for WebServer (#7709)
Rewrite multipart boundary detection (#7728)
Fixed bug in parsing POST file uploads (#7543)
Fix long password validation in WebServer (#7676)
FIX MIME-Type for txt-suffix (#7608)
FIX StaticRequestHandler crashes when cache_header is null and DEBUG_ESP_CORE is enabled (#7609)
Avoid #includes with a surrounding namespace (#7560)
webserver hook: allow to handle external http protocol (#7459, #7492, #7515)
Made ESP8266WebServer::client() return a reference (fixes #7075) (#7080)
WebServer: Allow client to send many requests on the same connection (#7414)
webserver: do not count "plain" in argument list (#6768)
webserver: string optimization (#7446)

Libraries - others

Resolve "PWM-locked" / "phase-locked" waveform merge leftover in Servo lib (#7978)
Add I2S class support (#7874)
At MDNS.end() also release services (#7859)
AVRISP: Prevent nullptr dereference on OOM (#7823)
HTTPClient: fix error handling (#7811)
LEAmDNS: one instance for all interfaces (#7786 - #7540 #7615 #7636 #7640)
Add the missing 'rename' method wrapper in SD library. (#7766)
Update to ESP8266HTTPClient.cpp for no Content-Length (#7691)
BREAKING: Change servo defaults to safer defaults (#7023)
Hook up custom timestamp proc for SD/SDFS (#7686)
BREAKING: Change return EEPROM.end() to bool (#7630)
httpclient: remove deprecated API (#7617)
Avoid float-double-conversion (#7559)
Use direct member initialization instead of ctr initialisation (#7556)
Basic authentication with ESP8266httpUpdate (#7190)

Documentation

doc: analogRead must not be called to frequently with WiFi is on (#7981)
comments in ClientContext::connect() (#7961)
Fix typo in EEPROM debug message (#7934)
Fix link to ESP8266 NonOS SDK (#7914)
Update a02-my-esp-crashes.rst (#7739)
Clarified implementation of the signed OTA implementation (#7736)
Specify where Additional Boards Manager URLs is (#7733)
update documentation example (#7697)
Revive a dead link (#7679)
Update OTA HTTP Server Header Information (#7633)
Pull deprecated axtls link (#7624)
Update README.md (#7623)
Update path of gdb (#7603)
Fixup weird combination of oneline/multi line comments (#7566)
Fix spelling typo under doc/faq (#7538)
doc: gcc handles duplicate literal strings (#7531)
Fix and add details to Serial doc (#7521)
Fix spelling typos in files under doc/esp8266wifi (#7520)
Typo (#7502)
Mention OTA Update class blocks flash mode changes (#7321)
Fix spelling typos in readme.rst (#7447)
Grammar fixes (#7441)

CI

Fix ESP8266SdFat architecture, Windows CI (#7866)
upgrade arduino in CI (#7716)
Use smarter cache key, cache Arduino IDE (#7791)
Remove Travis-CI configuration (#7674)
Allow test framework to use cores/esp8266/Arduino.h directly (#7377)
ci: apt update (#7596)
Properly replace toolchain in PlatformIO CI script (#7580)
PIO: Delete owner field (#7563)
Add CI test for eboot build (#7546)
Update PIO CI to be less chatty, fix CI fail (#7530)
CI: on host: force 64 bit mode like make -j2 CI implicitly does (#7513)
Add valgrind mocked test to CI (#7501)
Clean up minor warnings from LGTM.com (#7500)
Small update to ease manual release generation (#7467)
Fix typo in platform.txt causing device test fails (#7463)
Transition from TravisCI to GitHub CI (#7444)
Fix spelling typos in files under packages dir (#7439)
Remove wget dump during CI (#7438)

Build options

board manager: wemos d1 clones: new entry with menus for flash mode and flash freq (#7989)
board manager: + Agrumino lemon v4 (#7883)
Fix improper GENERIC board IDs (#7839)
boards.txt: sort by displayed name (#7670)
add sdk options to "generic esp8285 module" (#7550)

Build system

Update board-specific defines (#7875)
Add a check for all URLs in the package file (#7848)
Fix typo in 32-bit Windows package JSON (#7847)
PIO: Dynamically configure exceptions support (#7834)
platform.txt: instruct GCC to perform more aggressive optimization (#7770)
makecorever.py: Hide GIT error messages. Fixes #7744 (#7745)
Normalize platform.txt pattern numbers (#7752)
Fix platform.txt issue for Windows (#7750)
Update to pyserial 3.5, esptool 3.0 (#7737)
Added GZipped OTA support in elf2bin and PlatformIO (#7727)
Use -std=gnu17 instead of -std=c17 for GCC and test (#7588)
Compile failure fix with FS_NO_GLOBALS flag (#7685)
Update to GCC 10.2 (#7607)
Upgrade to GCC 10.1 toolchain (#6294)

Emulation on host

minor host fix found while compiling arduinoJson (#8009)
emulation on host: millis()/micros() now start at 0 (#7810)
mock: +hexdump() from debug.cpp (#7789)
emulation on host: makefile rework: only one build dir (#7738, #7740, #7741)
emulation on host makefile update, allowing to pass more options (#7552)