Fix error in PR #2048: if ::available() is called before ::connect() _rxBuffer is not initialised (#2155)

#2147 available() shouldn't return 0 after disconnect if there is still data in the buffer. Otherwise, how would we know it was there? (#2148)

* WiFiClientSecure: add support for PSK (pre-shared key) ciphers

* add example for WiFiClientSecure PSK

* WiFiClientSecure: added README

* Use right function for BSSID

* removing log

* Don't Return I2C_ERROR_CONTINUE on ReSTART

ReSTART operations on the ESP32 have to be handled differently than on AVR chips, so ReSTART operations(`Wire.endTransmission(false), Wire.requestFrom(id,size,false);` are queued until a STOP is send (`Wire.endTransmission(TRUE), Wire.endTransmission(), Wire.requestFrom(id,size), Wire.requestFrom(id,size,TRUE)). To indicate the queuing I had used `I2C_ERROR_CONTINUE`, this caused compatibility issues with the existing Arduino I2C Code base. So, back to Lying to the public(for their own good of course) about success!  This update just returns `I2C_ERROR_OK` on ReSTART commands.

* add comments

add comments

* Change Return error for ReSTART operation to I2C_ERROR_OK

This change restores compatibility with pre-existing Arduino Libraries.  The ReSTART queuing operations are hidden behind the scenes.  Wire.endTransmission(id,len,FALSE); will know return I2C_ERROR_OK instead of I2C_ERROR_CONTINUE, Wire.lastError() will return the true condition of I2C_ERROR_CONTINUE.

Correction of Pin A14 that was double defined.

* #1623, implementing suggested change

Splitted suggested fix issue #1623 in a header and source part. Dit not completely dive into the code.
Giving data twice as parameter feels wrong, but it compiles, and i can succesfully use the W5500 with SPI with this fix.
Doesn't compile without.

* #1623, implementing suggested change SPI.h/cpp

Splitted suggested fix issue #1623 in a header and source part. Dit not completely dive into the code.
Giving data twice as parameter feels wrong, but it compiles, and i can succesfully use the W5500 with SPI with this fix.
Doesn't compile without.

* Update BLE

* Update IDF to afe4c76

* Update CMakeLists.txt

* Update BLE to fix compilation issues

* Update BLE

* Clean warnings when all warning enabled

Not used variables / functions due to debug log

Dual define with different values :
cores\esp32/binary.h
#define B110 6
#define B1000000 64

tools/sdk/include/newlib/sys/termios.h
#define B110        3
#define B1000000   23

Local variable returned in WiFiclient Secure

* change due to deprecated function

* Update with proper variable and label

* Update esp32-hal-i2c.c

* Apply changes requested

* Fix warnings due to #define conflict thanks @atanisoft

Reenable git log in release builds

Bugfix: pin A14 was double defined; pin A15 was missing.

force correct dir

fix debug

Add more debug

print out the command

* issue #2041

* handshake timeout

* seconds to milliseconds

* Update IDF to a0468b2

* add missing ld file

* Fix PIO builds and change coex policy

This allow to catch the events when connected /disconnected,, etc...
This also allow to get parameters of events like the remote address of connected devices, etc...
Small change but lot of flexibility

* adding d-duino-32 board/pins, fixes #930

* remove OLED_RST

I have kept the original APPS size on purpose as 40KB SPIFFS is useless IMHO

Some fixes to nghttp2 to provide basic functionality. Added the missing main header. Removed the asio headers which require Boost libraries. Moved http_parser into the expected location. (#2068)

wait for FSM to return idle

* Added ESP:: functions for sketch size

* Fixed free space name to match ESP8266

* Working example for HTTPS over Eduroam network

* Update WiFiClientSecureEnterprise.ino