BT Music Sink Example

Source code path: example/bt/music_sink

Supported Platforms

• eh-lb52x

• eh-lb56x

• eh-lb58x

• sf32lb52-lcd series

• sf32lb56-lcd series

• sf32lb58-lcd series

Overview

This example demonstrates playing music and acquiring cover art picture from source devices on the local device after connecting to mobile phones and other A2DP Source devices via Bluetooth.

Example Usage

The example enables Bluetooth Inquiry scan and page scan on startup, allowing A2DP source devices like mobile phones to discover this device and initiate connections. After connection, mobile phone music can be played.Try to get the cover when you switch songs.( Only Iphone phones after Iphone 7 and some Android phones support the function change. For the support of Android phones, please refer to https://guide.hiby.com/docs/question/bt_reciver/bt_cover_support). if the file system is used, a cover.JPEG file will be generated locally to store the cover map. The default Bluetooth name of this device is sifli_avrcp_cover_art.

Hardware Requirements

Before running this example, you need to prepare:

• One development board supported by this example (Supported Platforms).

• Speakers.

menuconfig Configuration

1. Enable AUDIO CODEC and AUDIO PROC:

   • Path: On-chip Peripheral RTOS Drivers

   • Enable: Enable Audio Process driver

     • Macro switch: CONFIG_BSP_ENABLE_AUD_PRC

     • Description: Enable Audio process device, mainly used for audio data processing (including resampling, volume adjustment, etc.)

   • Enable: Enable Audio codec driver

     • Macro switch: CONFIG_BSP_ENABLE_AUD_CODEC

     • Description: Enable Audio codec device, mainly used for DAC conversion

2. Enable AUDIO(AUDIO):

   • Path: Sifli middleware

   • Enable: Enable Audio

     • Description: Enable audio configuration options

3. Enable AUDIO MANAGER(AUDIO_USING_MANAGER):

   • Path: Sifli middleware → Enable Audio

   • Enable: Enable audio manager

     • Macro switch: CONFIG_AUDIO_USING_MANAGER

     • Description: Use audio manager module for audio process handling

4. Enable Bluetooth(BLUETOOTH):

   • Path: Sifli middleware → Bluetooth

   • Enable: Enable bluetooth

     • Macro switch: CONFIG_BLUETOOTH

     • Description: Enable Bluetooth functionality

5. Enable A2DP SNK and AVRCP:

   • Path: Sifli middleware → Bluetooth → Bluetooth service → Classic BT service

   • Enable: Enable BT finsh (Optional)

     • Macro switch: CONFIG_BT_FINSH

     • Description: Enable finsh command line for Bluetooth control

   • Enable: Manually select profiles

     • Macro switch: CONFIG_BT_PROFILE_CUSTOMIZE

     • Description: Manually select profiles to enable

   • Enable: Enable A2DP

     • Macro switch: CONFIG_CFG_AV

     • Description: Enable A2DP

   • Enable: Enable A2DP sink profile

     • Macro switch: CONFIG_CFG_AV_SNK

     • Description: Enable A2DP SINK ROLE

   • Enable: Enable AVRCP

     • Macro switch: CONFIG_CFG_AVRCP

     • Description: Enable AVRCP profile

6. Enable BT connection manager:

   • Path: Sifli middleware → Bluetooth → Bluetooth service → Classic BT service

   • Enable: Enable BT connection manager

     • Macro switch: CONFIG_BSP_BT_CONNECTION_MANAGER

     • Description: Use connection manager module to manage BT connections

7. Enable NVDS:

   • Path: Sifli middleware → Bluetooth → Bluetooth service → Common service

   • Enable: Enable NVDS synchronous

     • Macro switch: CONFIG_BSP_BLE_NVDS_SYNC

     • Description: Bluetooth NVDS synchronization. When Bluetooth is configured to HCPU, BLE NVDS can be accessed synchronously, enable this option; when Bluetooth is configured to LCPU, this option needs to be disabled

Compilation and Flashing

Switch to the example project directory and run the scons command to compile:

> scons --board=eh-lb525 -j32

Switch to the example project/build_xx directory and run uart_download.bat, select the port as prompted to download:

$ ./uart_download.bat

     Uart Download

please input the serial port num:5

For detailed compilation and download steps, please refer to the relevant introduction in Quick Start.

Expected Results

After the example starts: A2DP source devices like mobile phones can connect to this device and play music.

Exception Diagnosis

Reference Documentation

Update History

Version	Date	Release Notes
0.0.1	01/2025	Initial version