arduino-esp32/libraries/README.md

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# ESP32 Libraries
arduino-esp32 includes libraries for Arduino compatibility along with some object wrappers around hardware specific devices. Examples are included in the examples folder under each library folder. The ESP32 includes additional examples which need no special drivers.
### ArduinoOTA
Over The Air firmware update daemon. Use espota.py to upload to the device.
### AsyncUDP
Asynchronous task driven UDP datagram client/server
### AzureIoT
Library to interact with Microsoft Azure IoT services
### BLE
Bluetooth Low Energy v4.2 client/server framework
### BluetoothSerial
Serial to Bluetooth redirection server
### DNSServer
A basic UDP DNS daemon (includes captive portal demo)
### EEPROM
Arduino compatibility for EEPROM (using flash)
### ESP32
Additional examples
* AnalogOut
* Camera
* ChipID
* DeepSleep
* ESPNow
* FreeRTOS
* GPIO
* HallSensor
* I2S
* ResetReason
* RMT
* Time
* Timer
* Touch
### ESPmDNS
mDNS service advertising
### FFat
FAT indexed filesystem on SPI flash
### FS
Filesystem virtualization framework
### HTTPClient
A simple HTTP client, compatible with WiFiClientSecure
### HTTPUpdate
Download a firmware update from HTTPd and apply it using Update
### NetBIOS
NetBIOS name advertiser
### Preferences
Flash keystore using ESP32 NVS
### SD
Secure Digital card filesystem using SPI access
### SD_MMC
Secure Digital card filesystem using 4-lane access
### SimpleBLE
Minimal BLE advertiser
### SPI
Arduino compatible Serial Peripheral Interface driver (master only)
### SPIFFS
SPI Flash Filesystem (see [spiffs-plugin](https://github.com/me-no-dev/arduino-esp32fs-plugin) to upload to device)
### Ticker
A timer to call functions on an interval
### Update
Sketch Update using ESP32 OTA functionality
### WebServer
A simple HTTP daemon
### WiFi
Arduino compatible WiFi driver (includes Ethernet driver)
### WiFiClientSecure
Arduino compatible WiFi client object using embedded encryption
### Wire
Arduino compatible I2C driver (master only)