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StereoAmp Click

StereoAmp Click demo application is developed using the NECTO Studio, ensuring compatibility with mikroSDK's open-source libraries and tools. Designed for plug-and-play implementation and testing, the demo is fully compatible with all development, starter, and mikromedia boards featuring a mikroBUS™ socket.

Click Library

  • Author : Mihajlo Djordjevic
  • Date : Dec 2019.
  • Type : I2C type

Software Support

Example Description

This example shows how to initialize amplifiers and set volume control registers on the fly.

Example Libraries

  • MikroSDK.Board
  • MikroSDK.Log
  • Click.StereoAmp

Example Key Functions

  • stereoamp_cfg_setup Config Object Initialization function.
void stereoamp_cfg_setup ( stereoamp_cfg_t *cfg );
  • stereoamp_init Initialization function.
err_t stereoamp_init ( stereoamp_t *ctx, stereoamp_cfg_t *cfg );
  • stereoamp_default_cfg Click Default Configuration function.
void stereoamp_default_cfg ( stereoamp_t *ctx );
  • stereoamp_set_power_on This function set the power On of both channels by write to the Mode Control register address of LM48100Q-Q1 chip on StereoAmp Click board.
void stereoamp_set_power_on ( stereoamp_t *ctx );
  • stereoamp_set_volume This function set the volume of both channels to the Volume Control register address of LM48100Q-Q1 chip on StereoAmp Click board.
void stereoamp_set_volume ( stereoamp_t *ctx, uint8_t volume );

Application Init

Application Init perfroms Logger and Click initialization.

void application_init ( void )
{
    log_cfg_t log_cfg;
    stereoamp_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_printf( &logger, "--------------------------\r\n" );
    log_printf( &logger, "     Application  Init\r\n" );
    Delay_ms ( 500 );

    //  Click initialization.

    stereoamp_cfg_setup( &cfg );
    STEREOAMP_MAP_MIKROBUS( cfg, MIKROBUS_1 );
    stereoamp_init( &stereoamp, &cfg );
    
    log_printf( &logger, "--------------------------\r\n" );
    log_printf( &logger, " ---  StereoAmp Click --- \r\n" );
    log_printf( &logger, "--------------------------\r\n" );
    Delay_ms ( 1000 );
    
    stereoamp_default_cfg( &stereoamp );
    Delay_ms ( 1000 );
    
    log_printf( &logger, "         Power  On        \r\n" );
    stereoamp_set_power_on( &stereoamp );
    Delay_ms ( 1000 );
    log_printf( &logger, "--------------------------\r\n" );
    
    log_printf( &logger, "     Set Volume: -80dB    \r\n" );
    stereoamp_set_volume( &stereoamp, STEREOAMP_GAIN_NEG_80dB );
    Delay_ms ( 1000 );
    log_printf( &logger, "--------------------------\r\n" );
    
    log_printf( &logger, "       Enable Fault       \r\n" );
    stereoamp_enable_fault( &stereoamp );
    Delay_ms ( 1000 );
    log_printf( &logger, "--------------------------\r\n" );
    
    log_printf( &logger, "     Enable Diagnostic    \r\n" );
    stereoamp_enable_diagnostic( &stereoamp );
    Delay_ms ( 1000 );
    log_printf( &logger, "--------------------------\r\n" );
    
    log_printf( &logger, " -- Initialization done --\r\n" );
    log_printf( &logger, "--------------------------\r\n" );
    Delay_ms ( 500 );
    
    log_printf( &logger, "--------------------------\r\n" );
    log_printf( &logger, " -----  Play  Music ----- \r\n" );
    log_printf( &logger, "--------------------------\r\n" );
    Delay_ms ( 500 );
}

Application Task

This examples first set volume level 20 of 31 ( gain: 1,5 dB ) for 10 seconds. After that, we increase the volume to level 10 ( gain: -13,5 dB ) for the next 10 seconds. Results are being sent to the UART Terminal where you can track their changes.

void application_task ( void )
{
    log_printf( &logger, "        Gain 1.5 dB        \r\n" );
    stereoamp_set_volume( &stereoamp, STEREOAMP_GAIN_1_5dB );
    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, "        Gain -13.5 dB      \r\n" );
    stereoamp_set_volume( &stereoamp, STEREOAMP_GAIN_NEG_13_5dB );
    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" );
}

Application Output

This Click board can be interfaced and monitored in two ways:

  • Application Output - Use the "Application Output" window in Debug mode for real-time data monitoring. Set it up properly by following this tutorial.
  • UART Terminal - Monitor data via the UART Terminal using a USB to UART converter. For detailed instructions, check out this tutorial.

Additional Notes and Information

The complete application code and a ready-to-use project are available through the NECTO Studio Package Manager for direct installation in the NECTO Studio. The application code can also be found on the MIKROE GitHub account.