Fixes: https://github.com/espressif/arduino-esp32/issues/2660

* Set IDF to v3.2

* Remove BLE submodule

* Add BLE lib source

* Update Camera example to support OV3660

* Properly allocate string and remove warning

The former way generates the following warning:
ISO C++ forbids converting a string constant to 'char*'

This change makes a character array the size of the string with null ending. It's clearer and gets rid of the warning.

* Better way

Since this is technically immutable, the type should reflect this too.

* add opportunity for more than one retry to _uploadReadByte

* an alternative timeout-based method to making _uploadReadByte more resilient

* move timing variables in the correct scope

* implement and use client.getTimeout instead of hard-coded timeout in _uploadReadByte

* add missing return

* some refactoring to address respecting the timeout in a potentially deadlocked connection

* fix spelling in comment

* address review comments; move impl to cpp file for getTimeout, and remove local variable for currentMillis

* remove redundant cast

* need to check for timeout outside the inner while as well

* update WebUpdate example to print something in unexpected callback condition

* update log_e messages per review comments

If _handler is set, pbuf_free is not called. ~AsyncUDPPacket() calls pbuf_free once but only after calling pbuf_ref in it's constructor. The refcount never reaches zero and the memory allocated for pbuf is never released.

Make all the partitions descriptions consistent, they now all show what space allocation you get.

* overload Preferences.getBytes similar to nvs so you can get size of the array.

* Cleaner implentation, with a separate function to get length.  Added an example

@cyberman54 from #2250 recommended reducing unnecessary logging.

Currently  WiFiClient::write is unable to send messages over 25Kb, because of the hard-coded retry limit of 10, that is getting decremented on every successful send. Since we cannot send more than 2*MTU bytes in one go, and have only 10 retries, write() is limited to approximately 25Kb. Technically it is not a bug, as it correctly returns the number of sent bytes and the caller can set up futher retries. But not all libs are aware of this behavior, for example, WebServer is not.
I suggest improving current behavior by resetting retry counter every time we had a successful write, so the limit of 10 retries will apply to Failed writes only, and will not apply to Successful writes. This will allow to write() blobs of arbitrary sizes.

* update getLocalTime().

* change count to millis in getLocalTime

* timeout logic.

* Added 2 ffat partition schemes for 4MB modules + improved descriptions.

Existing format options were unclear on how much spiffs you were
getting. Also add missing 1MB App/3MB Spiffs split.
This addresses https://github.com/espressif/arduino-esp32/issues/1799

This makes it very clear what each option gives you, and also adds 2 options
to get ffat on 4MB chips..

* Added link to ffat howto.

https://github.com/espressif/arduino-esp32/issues/1293

* Update boards.txt

Add menu items for ffat on mhetesp32minikit board.

* Add partition table.

* Added ffat partition for 4MB ESP32 Dev Module.

* Added comment about partitioning schemes.

* Added rmtDeinit to header. Fixes #2585

* oops.  missing ;

- ESP-Face to 2937054
- ESP32-Camera to 113629b

* Added board definition
Signed-off-by: NRoman Hosek <roman.hosek@iotbakery.com>

* fix typo

* variant + pin definition

Adding the -g3 flag that was omitted in the PIO build script but is present in Arduino IDE build scripts. This flag restores the ability to get line numbers from stack traces for elf files generated in PlatformIO IDE.

* Add default pin mapping for Serial1 and Serial2

* Default pin remap on wESP32

Improved default pin mapping for I2C0 and UART1 to avoid issues
with programming.
SDA0 was on IO2 but IO2 needs to be pulled low on reset to enable
serial programming, which conflicts with I2C pull-ups.
RX1 was on IO12, idle UART level is high which conflicts with
IO12 needing to be low on reset to select correct 3.3V flash
voltage.
New mappings:
SDA0 on IO15
RX1 on IO13
TX1 on IO12

* 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.