Applications - Espressif Systems ESP32 Hardware Design Manuallines

4. APPLICATIONS

4. Applications
4.1 UART to Wi-Fi Smart Device
The two UART interfaces are defined in Table 1.
Categories
UART0
UART1
Application example: ESP32-DevKitC (please see Section
4.2 ESP32-PICO-KIT Mini Development Kit
ESP32-PICO-KIT is a mini development board produced by Espressif. At the core of this board is the ESP32-
PICO-D4, a System-in-Package (SIP) module with complete Wi-Fi and Bluetooth functionalities. All the IO signals
and system power on ESP32-PICO-D4 are led out through two rows of 20 pads populated with CON20x2_2P54
pins. The development board integrates a USB-UART Bridge circuit, allowing the developers to connect the
development board to a PC's USB port for downloads and debugging.
For more information on ESP32-PICO-KIT, please refer to
4.3 ESP32-LyraT Smart Audio Platform
ESP32-LyraT is a smart audio platform designed with voice-recognition technology, targeting the IoT market.
ESP32-LyraT is based on the highly-integrated ESP32-WROVER module which features not only a 4 MB SPI
flash, but also a 4 MB PSRAM. With its ESP32 dual-core processors, Wi-Fi+BT capabilities and high integration,
ESP32-LyraT delivers a rapid product-development platform for systems of artificial intelligence, voice and image
recognition, wireless audio and smart-home networks.
The ESP32-LyraT smart audio platform has the following features:
• Support for multiple audio input sources: Wi-Fi, BT audio, AirPlay, DLNA, line-in, etc.
• Support for dual microphone pickup, near-field and far-field voice recognition.
• Support for mainstream lossless audio formats: ALAC, AAC, FLAC, OPUS, MP3, WAV, OGG, etc.
• Support for complete wireless protocols: Wi-Fi 802.11b/g/n, Classic BT, BLE, etc.
• Support for multiple networking protocols: BLE, WeChat, etc.
• Support for various interfaces with high extensibility: network interface, touch buttons, TFT screen, Camera
interface, etc.
• Support for multiple cloud platforms: DuerOS, Ximalaya FM, DeepBrain, etc.
Espressif Systems
Table 1: Pin Definition of UART Interfaces
Pin Definition
(Pin34) U0RXD + (Pin35) U0TXD
(Pin25) U1RXD + (Pin27) U1TXD
Function
Used for printing logs.
Used for receiving and sending commands.
3.7 ESP32-DevKitC).
ESP32-PICO-KIT Getting Started
29 ESP32 Hardware Design Guidelines V2.1
Guide.