Espressif Systems ESP User Manual

2.4.21 After using the ESP32-WROVER-E module to download the program, the following log
is printed after powered on. What could be the reason? . . . . . . . . . . . . . . . . . . . 21
2.4.22 When using the Flash Download Tools to 󰝙ash ESP32-C3 via USB, 8-download data fail
occurs repeatedly. How can I solve it? . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
3 application solution 23
3.1 Android application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
3.2 Arti󰝘cial intelligence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
3.2.1 What types of cameras are supported on AI image recognition products? . . . . . . . . . 23
3.2.2 Which versions of ESP-IDF are supported by ESP-WHO? . . . . . . . . . . . . . . . . . 23
3.2.3 Is there any information about the WeChat mini program of ESP-EYE? . . . . . . . . . . 23
3.2.4 What languages are supported by the esp-skainet demo? . . . . . . . . . . . . . . . . . . 23
3.2.5 What model frameworks does ESP-DL support? . . . . . . . . . . . . . . . . . . . . . . 24
3.2.6 Does ESP-DL support all models of the three platforms mentioned above (mxnet, pytorch,
and tensor󰝙ow)? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
3.2.7 Can the model 󰝘les of ESP-SKAINET be stored in the SD card? . . . . . . . . . . . . . . 24
3.2.8 How to customize command words in ESP-SKAINET? . . . . . . . . . . . . . . . . . . 24
3.2.9 How to reduce the system footprint of AI speech models? . . . . . . . . . . . . . . . . . 24
3.2.10 What is the di󰝗erence between a 16-bit quantization model and an 8-bit quantization model? 24
3.2.11 How does the AI voice model modify the number of microphone channels? . . . . . . . . 24
3.2.12 How do I get the actual audio captured in the development board? . . . . . . . . . . . . . 24
3.2.13 Do you have relevant study materials for ESP-SR GitHub? . . . . . . . . . . . . . . . . . 25
3.2.14 Do you have relevant study materials for ESP-DL? . . . . . . . . . . . . . . . . . . . . . 25
3.2.15 How does ESP32-S3 customize English command words for recognition? . . . . . . . . . 25
3.3 AT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
3.4 Audio development framework . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
3.4.1 What is the maximum power of supported speakers for ESP32 series audio development
board? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
3.4.2 Does Alexa solution have certain requirements for environmental noise? . . . . . . . . . . 25
3.4.3 There is an AUX input on the ESP32 AI development board, can MIC be used to pick up
the sound? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
3.4.4 When using ESP32-WROVER-B module + ES8311 to design audio development board,
which pins can be selected for MCLK clock? . . . . . . . . . . . . . . . . . . . . . . . . 26
3.4.5 Can ESP32-WROVER-E module use one I2S line to realize simultaneous broadcasting
and recording? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
3.4.6 Do Espressif modules support Spotify Connect? . . . . . . . . . . . . . . . . . . . . . . 26
3.4.7 When running the korvo_du1906 example on an ESP32-Korvo-DU1906 board, a reboot
caused the following error message: Guru Meditation Error: Core 0 panic’ed (IllegalIn-
struction). Exception was unhandled
. How to resolve such issue?
. . . . . . . . . . . . . . 26
3.4.8 Can ESP-DSP 󰝗t run 4096, 8192 and more samples? . . . . . . . . . . . . . . . . . . . 27
3.4.9 How to connect a microphone with ESP32? . . . . . . . . . . . . . . . . . . . . . . . . 27
3.4.10 Does ESP32 support analog audio output or digital audio output? . . . . . . . . . . . . . 27
3.4.11 What audio formats does the ESP32 chip support? . . . . . . . . . . . . . . . . . . . . . 27
3.4.12 How to use the ESP32 chip to decode compressed audio? . . . . . . . . . . . . . . . . . 27
3.4.13 Where is the code example for ESP-LED-Strip? . . . . . . . . . . . . . . . . . . . . . . 27
3.4.14 Does ESP32 support online voice recognition? . . . . . . . . . . . . . . . . . . . . . . . 27
3.5 BLE Mesh development framework . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
3.5.1 What is the maximum data transmission load for Bluetooth® LE (BLE) mesh? . . . . . . 28
3.5.2 Could you provide an example of networking through ESP32 BLE-Mesh? What APP can
be used for BLE-Mesh networking? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
3.5.3 For unprovisioned device in BLE-MESH, the default name is ESP-BLE-MESH, how to
modify this name? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
3.5.4 How many node devices can ESP32’s BLE-MESH application connect to? . . . . . . . 28
3.5.5 How can I manually reset a BLE mesh device without the mobile provisioning app or pro-
visioning device? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
3.5.6 After running the BLE MESH program for a long time on ESP32, it found that a seg-
mentation fault occurs when the client sends a message to the server and printed NO
multi-segment messsage contexts available. How to handle the fault? . 28
iii

Espressif Systems ESP Specifications

General

Brand	Espressif Systems
Model	ESP
Category	Motherboard
Language	English