Audio Driver HAT

Audio Driver HAT X3_Pi audio codec I2S

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Primary Attribute Category: {{{userDefinedInfo}}}: {{{userdefinedvalue}}} Brand: Waveshare

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Onboard Interfaces

Related Products

Overview

Introduction

This product is an audio module designed based on Sunrise X3 PI. it adopts ES7210 high-performance four-channel encoding chip and ES8156 high-performance stereo audio decoding chip. It is controlled by the I2C interface and audio is transmitted by the I2S interface. The onboard standard 3.5mm headphone jack can play music through external headphones. There is a high-quality MEMS silicon microphone at the left and right corners of the board, which can record in stereo.

Feature

• Power supply: 3.3V
• Audio encoder: ES7210
• Audio decoder: ES8156
• Control interface: I2C
• Audio interface: I2C
• ADC signal-to-noise ratio: 102dB
• DAC signal-to-noise ratio: 110dB

Hardware Connection

Pin Function	X3_Pi Pin (BCM)	Description
3.3V	3.3V	3.3V power input
GND	GND	Ground
SDA	P2	I2C data input
SCL	P3	I2C clock input
MCLK0	P4	I2S0 master clock input
BCLK0	P18	I2S0 bit clock input
LRCLK0	P19	I2S0 sub (frame) clock input
SDIO0	P20	I2S0 data input/output
MCLK1	P26	I2S1 master clock input
BCLK1	P0	I2S1 bit clock input
LRCLK1	P1	I2S1 sub (frame) clock input
SDIO1	P21	I2S1 data input/output

User Manual

Boxs-Intelligent Speech

Environment Installation

Install TogetherROS

sudo apt update
sudo apt install tros

Check whether TogetherROS is successfully installed.

ls /opt/

Install the intelligent speech algorithm package.

sudo apt update
sudo apt install tros-hobot-audio

Get Start To Use

It is recommended to run the following commands as the super user, otherwise, an error may occur.

sudo su
#Enter the password

Test the hardware environment.

i2cdetect -r -y 0

Configure TogetherROS environment.

source /opt/tros/setup.bash

Copy the configuration files needed to run the example from the installation path of TogetherROS. (This step can be skipped if you copied it before.)

cp -r /opt/tros/lib/hobot_audio/config/ .

Load the audio driver, and it only needs to be loaded once after booting.

bash config/audio.sh

Booting.

ros2 launch hobot_audio hobot_audio.launch.py

Modify the voice input, just write in the corresponding position according to the format.

vim config/hrsc/cmd_word.json

Normal Recording And Playback

Hardware test.

sudo i2cdetect -r -y 0

Load driver audio codec and x3 audio framework driver.

sudo modprobe es7210
sudo modprobe es8156
sudo modprobe hobot-i2s-dma
sudo modprobe hobot-cpudai
sudo modprobe hobot-snd-7210 snd_card=5

Check if loading is successful.

ls /dev/snd

Recording:

#Collect the recording of the 4-channel microphone for 5 seconds:
sudo tinycap ./4chn_test.wav -D 0 -d 0 -c 4 -b 16 -r 48000 -p 512 -n 4 -t 5
#Collect the recording of the 2-channel microphone for 5 seconds:
sudo tinycap ./2chn_test.wav -D 0 -d 0 -c 2 -b 16 -r 48000 -p 512 -n 4 -t 5

Playing:

#Play 2-channel audio (direct playback of 4-channel recordings is not supported):
sudo tinyplay ./2chn_test.wav -D 0 -d 1

Resource

Schematic Diagram

• Audio_Driver_HAT.pdf

Chip

• ES7210
• ES8156

FAQ

Question:After powering on the system and using the sudo i2cdetect -r -y 0 command, the UU device will be detected at address 0x08, this is because the es8156 driver is loaded by default when the system powers on the system.

 Answer:

How to solve: uninstall the es8156 driver.

sudo rmmod es8156

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Technical Support

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