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Summary of Contents for Espressif ESP32-LyraTD-MSC
- Page 1 ESP32-LyraTD-MSC User Guide Version 2.5 Espressif Systems Copyright © 2018...
- Page 2 V2.4 Chapter 2.2.2. Updated Figure 1-1; • 2018.07 V2.5 Updated Chapter 2.2.2. • Documentation Change Notification Espressif provides email notifications to keep customers updated on changes to technical documentation. Please subscribe here. Certificates Please download the product certificate(s) from here. ...
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Page 3: Table Of Contents
Table of Contents 1. Overview ..........................1.1. ESP32-LyraTD-MSC ........................1.2. Hardware Resources ........................2. Configuring for DuerOS ......................2.1. Software Preparation ......................... 2.2. Flashing the Firmware ........................ 2.2.1. Driver Installation ......................2.2.2. Flashing ESP32 ......................2.3. Network Configuration ....................... 2.3.1. Wi-Fi Networking ...................... -
Page 4: Overview
1. Overview Overview ESP32-LyraTD-MSC, one of Espressif’s Audio Development Boards, is an Acoustic Echo Cancelation (AEC) solution supporting voice recognition, near-field and far-field voice wake- up. Audio files in the format of AAC, FLAC, OPUS and OGG can be decoded and output without quality loss. -
Page 5: Hardware Resources
Supports two external speaker outputs. 10. Audio driver This audio power amplifier sends audio signals from the DSP to external speakers for playback. 11. DC-DC boost power supply This fixed-frequency DC-DC voltage booster powers the audio driver. Espressif ! /15 2018.07... - Page 6 The IC design of this chip is a little different from CP2102. 15. Programming port This programming and debugging interface of ESP32 is compatible with the ESP32 programming board. 16. USB Communication Port This is a normal USB communication port between PC and ESP32 module. Espressif ! /15 2018.07...
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Page 7: Configuring For Dueros
To flash firmware into the board, please download the Flash Download Tool. 2. App for Device Networking To use the SmartConfig functionality and configure networking for ESP32-LyraTD-MSC, please download from Espressif Apps either of the following two: IOT Espressif for Android APK or ESP-TOUCH for iOS IPA. -
Page 8: Flashing The Firmware
2.2.1. Driver Installation Connect the board to a PC with a Micro-USB cable and install the USB-to-UART driver. Figure 2-1. Installing the USB-to-UART Driver 2.2.2. Flashing ESP32 2.2.2.1. ESP32 Download Tool Figure 2-2. ESP32 Download Tool Espressif ! /15 2018.07... - Page 9 Tool. The following interface will be shown: Figure 2-3. ESP32 Download Tool 2. Configuration for Flashing Firmware • Addresses for Downloading Firmware Binary Files Address Function Bootloader.bin 0x1000 basic configuration partitions_esp_audio.bin 0x8000 basic configuration esp32-audio-app.bin 0x10000 audio application audio-esp.bin 0x3A0000 audio instruction Espressif ! /15 2018.07...
- Page 10 3. Power-on and Programming Figure 2-4. Powering on the Board • Power on ESP32-LyraTD-MSC. Click the “Start” button on the ESP32 Flash Download Tool to start downloading the • firmware. Press and hold the “Boot” button, and press the “RST” button on the board to enter •...
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Page 11: Network Configuration
RST button. In about 2 seconds, the blue LED light on the board will flash, indicating that ESP32 is searching for a wireless network. Figure 2-6. The LED Light on ESP32-LyraTD-MSC 2. To configure the network for the first time (or to change the SSID of the network), press the “SET”... - Page 12 Figure 2-7.Interface of IoT Espressif for Android APK 3. After connecting ESP32-LyraTD-MSC to the network, the blue LED light will be on steadily, and an audio message in Chinese “wang luo lian jie cheng gong” (meaning “successful network connection”) will be played.
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Page 13: Interactive Function
2.4. Interactive Function 2.4.1. Voice Recognition When ESP32-LyraTD-MSC is connected to DuerOS, ESP32 supports “Alexa” as a wake-up phrase. Saying “Alexa” to the board prompts the following response in Chinese: “nin hao you shen me fen fu” (meaning: “Hi! How can I help?”). Users can talk to the board and instruct it to play songs and news, or they can perform other similar voice interactions. -
Page 14: Configuring For Avs
3. Configuring for AVS Configuring for AVS For the illustration of flashing the AVS firmware, please refer to https://github.com/espressif/ esp-avs-sdk. 3.1. Interactive Function 3.1.1. Voice Recognition When the device boots up and connects successfully to the Wi-Fi network, the blue LED light will blink once, indicating that it is ready to accept commands. -
Page 15: Appendix - Schematics
Size Size Document Number Document Number Document Number R e v R e v R e v <Doc> <Doc> <Doc> Date: Date: Date: Friday, February 02, 2018 Friday, February 02, 2018 Friday, February 02, 2018 Sheet Sheet Sheet Espressif 2018.07... - Page 16 Size Size Document Number Document Number Document Number R e v R e v R e v <Doc> <Doc> <Doc> Date: Date: Date: Monday, February 05, 2018 Monday, February 05, 2018 Monday, February 05, 2018 Sheet Sheet Sheet Espressif 2018.07...
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Page 17: The Lower Board (B)
Document Number Document Number Document Number R e v R e v R e v <Doc> <Doc> <Doc> V1.1 V1.1 V1.1 Date: Date: Date: Friday, February 23, 2018 Friday, February 23, 2018 Friday, February 23, 2018 Sheet Sheet Sheet Espressif 2018.07... - Page 18 The Wi-Fi Alliance Member logo is a trademark of the Wi-Fi Alliance. The Bluetooth logo is a registered trademark of Bluetooth SIG. All trade names, trademarks and registered trademarks mentioned in this document are Espressif IoT Team property of their respective owners, and are hereby acknowledged. Copyright © 2018 Espressif Inc. All rights reserved. www.espressif.com...
- Page 19 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Espressif ESP32-LyraTD-MSC...
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