* little fix to WiFiSTA.cpp

Now SmartConfig works! Tested on ESP32

* little fix to WiFiSTA.cpp

Now SmartConfig works! Tested on ESP32

Fixes: https://github.com/espressif/arduino-esp32/issues/803

fixes: https://github.com/espressif/arduino-esp32/issues/613

This reduce net_would_block calls and CPU utilization

Based on http://esp32.net/images/Heltec/WIFI-LoRa-32/Heltec_WIFI-LoRa-32_DiagramPinoutFromBottom.jpg

The .build.board=xx proptery is used for generating a macro named "ARDUINO_xxx".

C macro names should never have a "-" sign.

* current: ARDUINO_NodeMCU-32S
* should be: ARDUINO_=NodeMCU_32S

* fix NodeMCU-32S .build.board property

The .build.board=xx proptery is used for generating a macro named "ARDUINO_xxx".

C macro names should never have a "-" sign.

* current: ARDUINO_NodeMCU-32S
* should be: ARDUINO_=NodeMCU_32S

* fix compiler flags to be compatible to ESP8622/Arduino

see also "fix NodeMCU-32S .build.board property" #812 (https://github.com/espressif/arduino-esp32/pull/812#issuecomment-341990261)

`-DARDUINO_BOARD={build.board}` **is missing**

* Revert "fix NodeMCU-32S .build.board property"

This reverts commit ea57b1496a2e87d3977a31a29a4cf7d63216f008.

* ArduinoOTA would stop receiving any packets if the port received a zero-length UDP packet, commonly sent by network scanners like nmap. Fixed to flush() after every call to parsePacket(), even if read length is 0.

Additionally, added length checking to fix a potential buffer overflow in parseInt().

Finally, added an end() method that stops the OTA listener and releases resources.

* Only end MDNS in end() if mdns mode is enabled.

Localized versions of Linux systems use Unicode characters in the names of standard directories like "Downloads".

use minimal partitions

* Forward client certificate to wificlient secure

* remove comment

* Update boards.txt

* Create pins_arduino.h

* Update IDF to 9274814

* Fix error in i2c and Arduino

Correct 10bit Device address handling.

Add initial handling for long I2C reads.

The existing code did not follow protocol with 10bit addressed devices.  Per _Philps/NXP Semiconductors UM10204 I2C-bus specification and user manual Rev. 6 4April2014_ pg.15 3.1.11 10-bit addressing:
~The first seven bits of the first byte are the combination of 1111 0xx of which the last two bits (xx) are the two Most-Significant Bits (MSB) of the 10-bit address; the eighth bit of the first byte is the R/!W! bit the determines the direction of the message~

Missed definition

Fixes: https://github.com/espressif/arduino-esp32/issues/749

Works even when single core mode is selected

The i2cWrite() function was returning to the app before the i2c transaction had completed.  This caused the next Wire() call to return a I2C_ERROR_BUSY.

Usable for library developers who write code not dependent on Arduino.
Adding 3 lines to the includes will permit their debug messages to be
visible in Arduino IDE or when enabled under IDF

* Update IDF to de750e9

* Add BLE Library submodule

Added argument to HardwareSerial.begin to specify whether the logic levels of the UART rx and tx lines should be inverted (#719)

* ESP32 default port in comment

* ESP32 default hostname.

Fixes: https://github.com/espressif/arduino-esp32/issues/710

* Create ledcWrite_demo_ESP32_RGB.ino

adding the public domain example ledcWrite_demo_ESP32.ino to this repo.  Added RGB to the name for people searching, added some comments, and renames things to make a bit more sense.

* Update ledcWrite_demo_ESP32_RGB.ino

renamed to ledcWrite_RGB.ino and added a couple more comments based on https://github.com/espressif/arduino-esp32/issues/689

* Rename libraries/ESP32/examples/AnalogOut/ledcWrite_demo_ESP32_RGB/ledcWrite_demo_ESP32_RGB.ino to libraries/ESP32/examples/AnalogOut/ledcWrite_RGB/ledcWrite_RGB.ino

Renamed.