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Espressif Systems ESP32-LyraTD-DSPG, User Manual

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Espressif Systems ESP32-LyraTD-DSPG User Manual Download Page 3

Table of Contents 

1. Overview 

1 

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1.1. ESP32-LyraTD-DSPG

 

1

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1.2. Hardware Resources

 

1

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2. Configuring for AVS 

3 

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2.1. Software Preparation

 

3

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2.2. Hardware Preparation

 

3

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2.3. Flashing the Firmware

 

3

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2.3.1. Driver Installation

 

4

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2.3.2. Flashing ESP32

 

4

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2.4. Network Configuration

 

7

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2.4.1. Wi-Fi Networking

 

7

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2.5. Interactive Function

 

10

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2.5.1. Voice Recognition

 

10

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2.5.2. Buttons

 

10

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A. Appendix - Schematics 

11 

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A.1. Main Board (A)

 

11

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A.2. Sub Board (B)

 

15

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Summary of Contents for ESP32-LyraTD-DSPG

Page 1: ...www espressif com ESP32 LyraTD DSPG User Guide Version 1 0 Espressif Systems Copyright 2019...

Page 2: ...e Notification Espressif provides email notifications to keep customers updated on changes to technical documentation Please subscribe at https www espressif com en subscribe Certification Download ce...

Page 3: ...are Preparation 3 2 2 Hardware Preparation 3 2 3 Flashing the Firmware 3 2 3 1 Driver Installation 4 2 3 2 Flashing ESP32 4 2 4 Network Configuration 7 2 4 1 Wi Fi Networking 7 2 5 Interactive Functio...

Page 4: ...nt 1 1 ESP32 LyraTD DSPG ESP32 LyraTD DSPG is based on ESP32 WROVER B a BT Wi Fi combo module and a digital signal processor DSP that features a three microphone array for noise reduction echo cancela...

Page 5: ...conversion to analog audio output 5 Audio amplifier This audio power amplifier sends audio signals from the Codec to external speakers for playback 6 CP2102N USB to UART Chip An upgraded version of th...

Page 6: ...credentials and network settings Wi Fi ssid and passphrase Please install the android APK from the Play Store here https play google com store apps details id com espressif provbleavs iOS support will...

Page 7: ...sdk please follow the instructions mentioned on the GitHub page Once you build the Alexa firmware you will generate three artifacts bootloader bin partitions bin and alexa bin For Flash Download Tool...

Page 8: ...ary files mentioned in table below and set appropriate address in the tool as shown in Figure 2 3 Binary Files Address Function bootloader bin 0x1000 basic configuration partitions bin 0x8000 basic co...

Page 9: ...ct 128 Mbit for FLASH SIZE 5 Select the COM port in line with the one used by the PC select 1152000 as a baud rate 6 Click the Start button on the ESP32 Flash Download Tool to start downloading the fi...

Page 10: ...rogramming app and click on Provision New Device Make sure your phone has internet connectivity Figure 2 5 Provision New Device The provisioning happens over BLE Bluetooth Low Energy Android mandates...

Page 11: ...Figure 2 7 Login to your amazon After successful login and authorization you will be shown a list of Wi Fi networks in the vicinity Choose the network that you wish the device to connect to Once sele...

Page 12: ...Figure 2 9 Enter your passphrase On successfully connecting to the Wi Fi network after provisioning a boot up LED pattern will show up Same as Echo dot after which the DSP and Alexa will be initializ...

Page 13: ...is the weather Will it rain today Sing a song Play TuneIn radio Set volume level to 7 2 5 2 Buttons The Action button can be used as tap to talk The same button can also be used to disable an Alarm Ti...

Page 14: ...CLK 3 DSP_VT_RSTN_3V3 3 DSP_APR_RSTN_3V3 3 DBMD_INT_3V3 3 DSP_APR_SPI_CS 3 DSP_VT_SPI_SCS_3V3 3 DSP_APR_SPI_CLK 3 DSP_APR_SPI_MOSI 3 DSP_APR_SPI_MISO 3 DSP_APR_I2S_BCLK_3V3 3 DSP_APR_I2S_LRCK_3V3 3 DS...

Page 15: ...Date Sheet o f 03_DSP V3 1 ESP32 LyraTD DSPG_A C 3 5 Thursday February 14 2019 R73 10K 1 R46 10K 1 NC U4 SG5032CAN 24 576000M TJGA3 VDD 4 OUT 3 GND 2 NC 3 ST 1 R82 10K 1 NC R41 0R 1 R286 680K 1 NC R56...

Page 16: ...DSPG_A C 4 5 Friday March 15 2019 Title Size Document Number Re v Date Sheet o f 04_Codec PA V3 1 ESP32 LyraTD DSPG_A C 4 5 Friday March 15 2019 Title Size Document Number Re v Date Sheet o f 04_Code...

Page 17: ...e v Date Sheet o f 05_Powers UART V3 1 ESP32 LyraTD DSPG_A C 5 5 Thursday February 14 2019 Title Size Document Number Re v Date Sheet o f 05_Powers UART V3 1 ESP32 LyraTD DSPG_A C 5 5 Thursday Februar...

Page 18: ...D2 6 GND3 7 GND4 8 R45 10K 1 NC C6 22pF 50V 5 D10 19 237ABHR6GHC A012T G 2 R 1 B 4 CV 3 R27 5 1K 1 R56 5 1K 1 STD1 M3 L5 3 5 R47 27 5K 1 D2 19 237ABHR6GHC A012T G 2 R 1 B 4 CV 3 C1 10uF 10V 20 C4 0 1u...

Page 19: ...lity for infringement of any proprietary rights relating to use of information in this document is disclaimed No licenses express or implied by estoppel or otherwise to any intellectual property right...

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