This changes all SPI functions that take data pointers which are
not modified so that the declaration is const. This allows them
to be used with const data (i.e. held in flash). No functional
changes are required.

The defnitions of spiWrite() and spiTransferBytes()  in
esp-hal-spi.h/c have been updated to be consistent.

Tests:
 - Build a simple sketch using SPI.writePattern() and
   SPI.transferBytes()  which uses const data and verify that the
   attached device functions as expected.

I compiled the sample "WebServer -> HttpAdvancedAuth". But the right username and password can not login in. I found the file "Webserver.h" may be have some problem. So I fix it. Please check it.

Add a file named `partitions.csv` to your sketch folder and define the partitions inside. In order to not get `Sketch too big`, please select appropriate partition scheme from the board menu

* Add support for WiFi long range mode

* Update WiFiGeneric.cpp

* fix typo in SPIFFS example

* fix typo in FFAT example

* Add readFloat

* Add readFloat to BLE

* Wait for client.available() to prevent ESP32 crashes

* Removed user-specific SSID & passphrase

Avoid passing String by-value, which is slightly less efficient
as it involves a full copy-constructor/tempstring creation.

* 20190916 - initial: support for Master mode, Pin and SSP

* 20190916 - initial: Add example app for Master mode

* 20190916 - initial: Force another build

* 20190916 - connect would use resolved address as preference and remove now redundant _remote_address

* 20190916 - rework set/reset/default pin logic

* 20190916 - cleanup: remove static vars, add/use constants, fix typos

* 20190916 - fix build issues and implement geoup events for status verification.

* 20190916 - remove extra lines,misc

* 20190916 - rework ESP_BT_GAP_DISC_RES_EVT, added SPP_DISCONNECTED bit for disconnect event. + timeout for disconnect()

* 20190916 - Small log change to improve log sequencing

* 20190916 - remove static from local vars

* 20190916 - Limited scope and duration for the scan, log device address during scan in info mode as it is very difficult to find out sometimes. Fixed get_name_from_eir() not resetting the name when called.

* 20190916 - break property for loop during scan when name matches.

* 20190916 - misc

* 20190916 - SPP_DISCONNECT state updates

* 20190916 - formatting, remove some strange syntax from initiator code

* 20190916 - Add comments to the example about connect(...) usage and timeouts

* 20190916 - fix disconnect() without timeout

* 20190916 - Add example comment to view BT address and name during connect(name)

* 20190916 - wording in example comments

* 20190916 - rework connect() and disconnect() methods to help with concurrency and more authoritative status returned back to caller. Automatic disconnect in connect() methods

* 20190916 - optimize code

* 20190916 - optimize code - more

* 20190916 - add timeout for pin set

* 20190916 - change scan mode to ESP_BT_SCAN_MODE_CONNECTABLE_DISCOVERABLE

* 20190916 - update example code slightly

* 20190916 - increase READY_TIMEOUT to 10 secs

* 20190916 - typo in example and move waitForConnect() to static area

* 20190916 - update example comments

* 20190916 - update example comments

* 20190916 - update example comments

* 20190916 - add new example to remove paired devices from ESP32

* 20190916 - correct typo in example

* 20190916 - update example comment, add remove_bond_device() method for convenience.

* 20190916 - reword example comment.

* 20190916 - rename remove_bond_device()

* 20190916 - rename removePairedDevice() to unpairDevice()

* 20190916 - code review changes

* 20190916 - fix return value in setup() od example

* add config, menu partition Wrover

* fix all boards

#include "esp32-hal-log.h" is mandatory is order to build BLEDevice.cpp.
It can't be left up to a compiler variable.

* Add script to handle updates to the docs folder

* Create gh-pages.yml

* Update on-pages.sh

uuid16 is Missing first 4 characters.
uuid is Missing last 2 characters.

* Add Added unimplemented getCharacteristicsByHandle function

Defined in BLERemoteService.h
But, Not included in BLERemoteService.cpp

* Delete log output

* move scripts and tone down travis

* Update and rename main.yml to push.yml

* Create release.yml

* More efficient CI builds

* Update main.yml

Pretty sure this was a typo as the deinit doesn't actually allow for reinit if that is an ifndef.  Changed in my local copy and can now deinit and reinit just fine.  Also, not sure why we are checking for the architecture here.  Just curious.

Add an accessor function for the useful wifi data

Better cleanup on mount failures, as the idf api now seems to assign handle and mountpoint before failing. Fixes #3265 (#3282)

* Fixed FFat::end. Fixes #3244

* Missed the handle check in format

Closes: https://github.com/espressif/arduino-esp32/issues/2944

Thanks @atanisoft