audioamp

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AudioAMP click

The AudioAMP Board features an on-board power amplifier LM386 designed for use in low voltage consumer applications.

click Product page

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Click library

• Author : MikroE Team
• Date : Jan 2020.
• Type : I2C type

Software Support

We provide a library for the AudioAmp 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 AudioAmp Click driver.

Standard key functions :

• Config Object Initialization function.

void audioamp_cfg_setup ( audioamp_cfg_t *cfg );

• Initialization function.

AUDIOAMP_RETVAL audioamp_init ( audioamp_t *ctx, audioamp_cfg_t *cfg );

• Click Default Configuration function.

void audioamp_default_cfg ( audioamp_t *ctx );

Example key functions :

• Set mux volume function

void audioamp_set_volume ( audioamp_t *ctx, uint8_t volume_value )

• Set channel volume function

void audioamp_set_volume_channel ( audioamp_t *ctx, uint8_t channel, uint8_t volume_value )

• Set normal opeation function

void audioamp_set_normal_operation ( audioamp_t *ctx )

Examples Description

AudioAmp Click is a stereo audio amplifier

The demo application is composed of two sections :

Application Init

Initialization driver enable's - I2C, turn on the Audio Amp click and start write log.

void application_init ( void )
{
    log_cfg_t log_cfg;
    audioamp_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.

    audioamp_cfg_setup( &cfg );
    AUDIOAMP_MAP_MIKROBUS( cfg, MIKROBUS_1 );
    audioamp_init( &audioamp, &cfg );

    Delay_ms( 100 );

    log_printf( &logger, "~~~~~~~~~~~~~~~~~~~~~~\r\n " );
    log_printf( &logger, "    AudioAmp Click   \r\n " );
    log_printf( &logger, "~~~~~~~~~~~~~~~~~~~~~~\r\n" );

    log_printf( &logger, "       Power ON       \r\n" );
    
    audioamp_power_on( &audioamp );
    Delay_ms( 1000 );

    log_printf( &logger, "----------------------\r\n" );
}

  

Application Task

This is a example which demonstrates the use of AudioAmp Click board.

void application_task ( void )
{
    log_printf( &logger, " Set volume to lvl 15 \r\n" );
    log_printf( &logger, " for the next 10 sec. \r\n" );

    audioamp_set_volume( &audioamp, 15 );
    Delay_ms( 10000 );

    log_printf( &logger, "----------------------\r\n" );
    log_printf( &logger, " Set volume to lvl 5  \r\n" );
    log_printf( &logger, " for the next 15 sec. \r\n" );

    audioamp_set_volume( &audioamp, 5 );
    Delay_ms( 15000 );

    log_printf( &logger, "----------------------\r\n" );
    log_printf( &logger, " Set volume to lvl 10 \r\n" );
    log_printf( &logger, " for the next 20 sec. \r\n" );

    audioamp_set_volume( &audioamp, 10 );
    Delay_ms( 20000 );
    
    log_printf( &logger, "----------------------\r\n" );
    log_printf( &logger, "      Mute  mode      \r\n" );
    log_printf( &logger, " for the next 5 sec.  \r\n" );

    audioamp_mute_mode( &audioamp );
    Delay_ms( 5000 );
    
    log_printf( &logger, "----------------------\r\n" );
    log_printf( &logger, "     Unmute  mode     \r\n" );

    audioamp_unmute_mode( &audioamp );
    Delay_ms( 100 );

    log_printf( &logger, "----------------------\r\n" );
}

void main ( void )
{
    application_init( );

    for ( ; ; )
    {
        application_task( );
    }
} 

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.AudioAmp

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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