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Fixes https://github.com/espressif/arduino-esp32/issues/1595

* ESP-IDF da2116f + esp32-camera f8f26ab +BLE b232e7f

* Fix fail compilation due to missing cpp guard

Add MD5 computation to Esp and add request header with MD5 hash of the running sketch to HTTPUpdate (#2176)

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

* Fixed flash size check and added SPIFFS size check

* Rewriting ESP.getFreeSketchSpace(), moving code from HTTPUpdate.cpp

Fixes: https://github.com/espressif/arduino-esp32/issues/2153

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