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mikroSDK Library

BT Audio Click

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Author: MIKROE

Last Updated: 2024-10-31

Package Version: 2.1.0.14

mikroSDK Library: 2.0.0.0

Category: BT/BLE

Downloaded: 318 times

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License: MIT license  

If you are getting tired of all those cables you need just to listen to your favorite song over speakers.

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  • mikroSDK Library 1.0.0.0
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mikroSDK Library Blog


BT Audio Click

If you are getting tired of all those cables you need just to listen to your favorite song over speakers.

btaudio_click.png

Click Product page


Click library

  • Author : MikroE Team
  • Date : Jun 2020.
  • Type : UART type

Software Support

We provide a library for the BtAudio Click as well as a demo application (example), developed using MikroElektronika compilers. The demo can run on all the main MikroElektronika development boards.

Package can be downloaded/installed directly form compilers IDE(recommended way), or downloaded from our LibStock, or found on mikroE github account.

Library Description

This library contains API for BtAudio Click driver.

Standard key functions :

  • Config Object Initialization function.

    void btaudio_cfg_setup ( btaudio_cfg_t *cfg );

  • Initialization function.

    BTAUDIO_RETVAL btaudio_init ( btaudio_t ctx, btaudio_cfg_t cfg );

Example key functions :

  • Play next track function

    uint8_t btaudio_next_track ( btaudio_t *ctx );

  • Increase volume function

    uint8_t btaudio_increase_volume ( btaudio_t *ctx );

  • Decrease volume function

    uint8_t btaudio_decrease_volume ( btaudio_t *ctx );

Examples Description

This example reads and processes data from BT Audio clicks.

The demo application is composed of two sections :

Application Init

Initializes the driver and configures the Click board.


void application_init ( void )
{
    log_cfg_t log_cfg;
    btaudio_cfg_t cfg;

    /** 
     * Logger initialization.
     * Default baud rate: 115200
     * Default log level: LOG_LEVEL_DEBUG
     * @note If USB_UART_RX and USB_UART_TX 
     * are defined as HAL_PIN_NC, you will 
     * need to define them manually for log to work. 
     * See @b LOG_MAP_USB_UART macro definition for detailed explanation.
     */
    LOG_MAP_USB_UART( log_cfg );
    log_init( &logger, &log_cfg );
    log_info( &logger, "---- Application Init ----" );

    //  Click initialization.

    btaudio_cfg_setup( &cfg );
    BTAUDIO_MAP_MIKROBUS( cfg, MIKROBUS_1 );
    btaudio_init( &btaudio, &cfg );
    Delay_ms ( 1000 );

    log_printf( &logger, "Power ON\r\n" );
    btaudio_set_power_on( &btaudio );
    btaudio_process( RESPONSE_NULL );

    log_printf( &logger, "Factory reset\r\n" );
    btaudio_set_factory_defaults( &btaudio );
    btaudio_process( RESPONSE_NULL );

    log_printf( &logger, "Set device name\r\n" );
    btaudio_set_device_name( &btaudio, "BT Audio Click" );
    btaudio_reset( &btaudio );
    btaudio_process( RESPONSE_AOK );

    log_printf( &logger, "Set data mode\r\n" );
    btaudio_set_cmd_mode( &btaudio, 1 );
    btaudio_process( RESPONSE_NULL );
}

Application Task

Checks if there's any command received, then parses it and performs adequate actions.


void application_task ( void )
{
    btaudio_process( RESPONSE_NULL );
} 

Note

We have used the Serial Bluetooth Terminal smartphone application for the test. A smartphone and the Click board must be paired in order to exchange messages with each other. So make sure to pair your device with the Click board and connect to it using the Serial Bluetooth Terminal application, then you will be able to send commands listed below.

The full application code, and ready to use projects can be installed directly form compilers IDE(recommneded) or found on LibStock page or mikroE GitHub accaunt.

Other mikroE Libraries used in the example:

  • MikroSDK.Board
  • MikroSDK.Log
  • Click.BtAudio

Additional notes and informations

Depending on the development board you are using, you may need USB UART Click, USB UART 2 Click or RS232 Click to connect to your PC, for development systems with no UART to USB interface available on the board. The terminal available in all Mikroelektronika compilers, or any other terminal application of your choice, can be used to read the message.


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