Speaker click

Speaker Click is a compact add-on board that contains an audio power amplifier with a high-quality audio reproduction. This board features the MAX9717, a 1.4W mono bridge-tied load (BTL) architecture audio power amplifier from Maxim Integrated.

click Product page

Click library

• Author : Nenad Filipovic
• Date : Apr 2021.
• Type : GPIO type

Software Support

We provide a library for the Speaker 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 from NECTO Studio Package Manager(recommended way), downloaded from our LibStock™ or found on mikroE github account.

Library Description

This library contains API for Speaker Click driver.

Standard key functions :

• speaker_cfg_setup Config Object Initialization function.

  void speaker_cfg_setup ( speaker_cfg_t *cfg );

• speaker_init Initialization function.

  SPEAKER_RETVAL speaker_init ( speaker_t *ctx, speaker_cfg_t *cfg );

• speaker_default_cfg Click Default Configuration function.

  void speaker_default_cfg ( speaker_t *ctx );

Example key functions :

• speaker_shutdown Speaker shutdown mode function.

  err_t speaker_shutdown ( speaker_t *ctx );

• speaker_normal_operation Speaker normal operation mode function.

  err_t speaker_normal_operation ( speaker_t *ctx );

• speaker_enable_slave_amp Speaker enables the slave amplifier function.

  err_t speaker_enable_slave_amp ( speaker_t *ctx );

Example Description

This library contains API for the Speaker click driver. This application controls the operating modes of the Speaker click board™.

The demo application is composed of two sections :

Application Init

Initialization of GPIO module and log UART. After driver initialization, the application performs the default settings.

void application_init ( void ) {
    log_cfg_t log_cfg;          /**< Logger config object. */
    speaker_cfg_t speaker_cfg;  /**< Click config object. */

    /** 
     * 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_printf( &logger, "\r\n" );
    log_info( &logger, " Application Init " );

    // Click initialization.

    speaker_cfg_setup( &speaker_cfg );
    SPEAKER_MAP_MIKROBUS( speaker_cfg, MIKROBUS_1 );
    if ( speaker_init( &speaker, &speaker_cfg ) == DIGITAL_OUT_UNSUPPORTED_PIN ) {
        log_error( &logger, " Application Init Error. " );
        log_info( &logger, " Please, run program again... " );

        for ( ; ; );
    }
    speaker_default_cfg ( &speaker );
    log_info( &logger, " Application Task " );
    Delay_ms ( 100 );
}

Application Task

This is an example that shows the use of a Speaker click board™. The task of the application consists of switching two modes of operation: normal and shutdown modes. Results are being sent to the Usart Terminal where you can track their changes.

void application_task ( void ) {
    log_printf( &logger, "-------------------------\r\n" );
    log_printf( &logger, "  Normal Operation Mode \r\n" );
    speaker_normal_operation( &speaker );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );

    log_printf( &logger, "-------------------------\r\n" );
    log_printf( &logger, "   Enter Shutdown Mode  \r\n" );
    speaker_shutdown( &speaker );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
}

The full application code, and ready to use projects can be installed directly from NECTO Studio Package Manager(recommended way), downloaded from our LibStock™ or found on mikroE github account.

Other mikroE Libraries used in the example:

• MikroSDK.Board
• MikroSDK.Log
• Click.Speaker

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. UART terminal is available in all Mikroelektronika compilers.