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The LittleFS folks changed the on-flash format in 2.6.0, making
it unmountable with earlier precompiled code.

Rebuild the OTA bootloader using the 2.9.3 LittleFS release,
matching the core version.

Fixes #2198

Adds BluetoothHIDMaster and HIDKeyStream which let the PicoW connect to
and use Bluetooth Classic HID devices like keyboards and mice.

An example that lets the PicoW use a BT keyboard as a piano is
included and shows the use of the new classes.

On-flash format changed after 2.5.1, but this can read prior versions
and will upgrade on-device to the later version.

* fix: Changed folder name to match build.variant property
* Added GPIO definitions for Archi board
Co-authored-by: Christian Halter <christian.halter@newsan.com.ar>

Support 255 character names, not just 32, in LittleFS filesystems.

Fixes #2188

We get a call to stop the audio channel from a timer/IRQ context, so can't
safely remove the IRQ handler for the AudioBufferManager.  The SDK will panic.

Because the IRQ handler will be a noop if it's not uninstalled, we will
instead just leave our shared handler in place and let it do nothing.

Use a common BluetoothLock RAII in BluetoothAudio to clen up the code and
automatically lock BT for the AVRCP button methods.

Add a "-32K" option to all the IP stack options that doubles the PCB and memory
pools from default.  For most use cases this is not necessary, but it could be
helpful in cases where large numbers of TCP clients are connected or high
bandwidth applications.

Fixes #2050

From:
https://github.com/espressif/arduino-esp32/pull/6216
https://github.com/espressif/arduino-esp32/pull/6280
https://github.com/espressif/arduino-esp32/pull/7112

From https://github.com/espressif/arduino-esp32/pull/9253

From https://github.com/espressif/arduino-esp32/pull/8713

From https://github.com/espressif/arduino-esp32/pull/9167

From https://github.com/espressif/arduino-esp32/pull/9224

Trivial fix #2179

From https://github.com/espressif/arduino-esp32/pull/9440

From https://github.com/espressif/arduino-esp32/pull/9594

Provide direct connection from BT audio to I2S and PWM audio outputs.
Example included showing play/pause operation.

Adds a library to run classic Bluetooth A2DP source (output) audio from
the PicoW.  Simple example showing operation and callbacks.

Factor out multiple BT lock/unlock and place in the PicoW variant files.

Use -O2 only on the LWIP checksum routine, resulting in a speedup of
around 13% (checksumming only, not entire LWIP stack) for 72 add'l bytes
of flash.

Fixes #1730

Uses DMA operations to avoid the need to bit-bang or busy wait for I2C operations
that might be very slow.  Optional, adds new API calls to enable.  Simple example
included.

Fixes #1192

Uses DMA operations to avoid the need to bit-bang or busy wait for SPI
operations that might be very slow. Optional, adds new API calls to enable.
Simple example included.

Co-authored-by: Christian Halter <christian.halter@newsan.com.ar>

Fixes #2163

When a ping is sent from the Pico, a raw_recv callback is added which
sees all raw incoming packets to detect the response from the ping target.
If while waiting for the target response an external ping packet arrives
this incoming ping request packet will be processed by the
LwipIntfDev<>::_pingCB which will return "0" not processed and which
*should* not change the payload unless it handles the actual packet.

Unfortunately, the 20 byte header was unconditionally stripped off of
the packet before checking if this was our response, changing the
payload address and causing an assertion in LWIP.

Fix by using absolute offsets inside the raw packet for the ping
response checks.

Fixes #2156
Fixes #2149

As seen in debug of #2149, if the LwipIntfDev is already _started,
return false for a ::begin() call.

Also, protect netif_add/_remove on the very small possibilty of being
called by LwipIntfDev devices while the CYW43 driver is doing work.

Avoids crash seen in #2132

With example from the Arduino Ethernet library

If a file called `.ci.defines` is present in a directory, apply those
while building the specified sketch.

* Add an lwip_ESPHost test, like the wired Ethernet ones
* Add WINC1500 test and CI hook
* Remove 1 minor warning in WINC build

Add missing boards and WiFi types