* WiFi.macaddress() returns mac address

* change description

* return macaddress when WiFi mode is WIFI_MODE_NULL

* An example to read high frequency analog data using i2s_adc

* Changed random() to use Lemire's method for bounding

* Update IDF to abea9e4c0

* Update esptool

* Enable PSRAM for PICO D4

* Enable APP_ROLLBACK_ENABLE

@tread-Qualitrol discovered this error.

In Board.txt file added board revision submenu to distinguish the different revisions of the same board. By selecting different revision in the Arduino menu different value of the predefined macro will be applied which is used inside the pins_arduino.h file to make different defines and values for the specific revision.
In addition to this esp32-poe pin definitions is added ethernet power enable pin and also defined macro: BOARD_HAS_1BIT_SDMMC

* Clarified comments and debug messages

Made debug messages and comments easier to understand/grammatical fixes

* few more fixes

* Add timeout to WiFiClient.connect()

* Changed default handling

* Board T-Beam: Update pins_arduino.h

DAC2 is not wired, only DAC1 is -> corrected
LORA pins 27 + 19 are only wired on pcb, but not connected to header -> deleted

* Update pins_arduino.h

Button and LED added

* fix log error code format

* remove useless condition in if statement

* add missing EEPROM lib to CMakeLists.txt, moved the EEPROM files to proper directory

* add missing EEPROM lib to CMakeLists.txt, moved the EEPROM files to proper directory

* Webserver fix logging (#1)

* Change logging to use esp32-hal-log.h

fixes #2355

* adjust log parameter output positions, reduce lines

The DEBUG_ESP method used less lines than I originally set `log_v` to use when displaying the details of the received params ("@" and "=" indexes, and File info on a single line)

Executing python2 get.py behind proxy give error "IOError: [Errno socket error] [SSL: UNKNOWN_PROTOCOL] unknown protocol (_ssl.c:590)"

Pin 2 is not found on the [Adafruit docs](https://learn.adafruit.com/adafruit-huzzah32-esp32-feather) for this board and 33 was suggested in #1586 as a fix. I've tried this locally on my board and it is working correctly.

* Fix BananaPi-BIT DAC definition

* Update t-beam too

* I2C debugging and Log Dump Explaination

Create a help file for I2C debugging and interpretation of log dumps

* Update i2c_debugging.md

version

* add formatting, file locations

* An example to read high frequency analog data using i2s_adc

* HiFreq_ADC.ino

Fixes: https://github.com/espressif/arduino-esp32/issues/2316

Add download counter for releases

The i2c peripheral will hang if a READ request is issued with a zero data length.  The peripheral
drops into a continuous timeout interrupt response.  The STOP command can not be set out to the I2C
bus. The SLAVE device correctly ACK'd the address byte, with READ bit set, it has control of the SDA
 pin.  The ESP32 send out the next SCL HIGH pulse but, since the SLAVE is in READ Mode, and the First
bit it is sending happened to be a ZERO, the ESP32 cannot send the STOP.  When it releases SDA during
the SCL HIGH, the pin does not change state.  The pin stays low because the SLAVE is outputing a LOW!
The ESP32 drops into a perminent WAIT state waiting for SDA to go HIGH (the STOP).

**esp32-hal-i2c.c**
* add databuff length checks to `i2cRead()` and `i2cWrite()`