Audio record demo

[中文]

1、Function overview

mic collects audio data and saves it as xx.pcm file to TF card.

2、Code path

demo path: \components\demos\media\audio\aud_intf\demo\aud_intf_demo.c

For the detailed description of the Aud_Intf API interface, please refer to the same webpage: /api-reference/multi_media/bk_aud_intf.html

3、Cli command introduction

The commands supported by the demo are as follows:

Command

Description

aud_intf_record_test {init|start|pause|stop|deinit} xx.pcm

Record to xx.pcm file

The macro configuration that the demo runs depends on:

Name

Description

File

value

CONFIG_AUDIO

Configure the audio function

\middleware\soc\bk7256\bk7256.defconfig

y

CONFIG_AUDIO_RISCV_IP_V1_0

Configure audio ip

\middleware\soc\bk7256\bk7256.defconfig

y

CONFIG_AUD_INTF

Configure aud_intf enable

\middleware\soc\bk7256\bk7256.defconfig

y

CONFIG_AUD_INTF_TEST

Configure demo enable

\middleware\soc\bk7256\bk7256.defconfig

y

CONFIG_AUDIO_TRANSFER

Configuring Voice Transmission Enable

\middleware\soc\bk7256\bk7256.defconfig

y

CONFIG_AUD_TRAS_MODE_CPU0

Configure Voice Transmission Mode

\middleware\soc\bk7256\bk7256.defconfig

y
Demo runs dependent libraries and drivers:

  • DMA DMA driver

  • AUD audio module driver

  • SD SDcard and file system driver

4 Demo introduction

The steps performed by the demo are as follows:

1.Mount TF card

  • Uart sends AT command fatfstest M 1 to mount TF card

2.ready to record

  • Uart sends AT command aud_intf_record_test init xx.pcm to initialize recording

3.start recording

  • Uart sends AT command aud_intf_record_test start xx.pcm to start recording, the audio will be saved in the root directory file of TF card xx.pcm

4.Pause recording

  • Uart sends AT command aud_intf_record_test pause xx.pcm to pause recording

5.Resume recording

  • Uart sends AT command aud_intf_record_test start xx.pcm to resume recording

6.stop recording

  • Uart sends AT command aud_intf_record_test stop xx.pcm to stop recording

7.end recording

  • Uart sends AT command aud_intf_record_test deinit xx.pcm to end the recording, close the recording file, and log off the recording channel

5、Detailed configuration and description

Note

  • 1.Before executing this demo, please ensure that the tf card can be used normally;

  • 3.There are many source codes for this demo, so I won’t explain it here, please refer to the source code.