evc

---

EVC Click

EVC 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 : MikroE Team
• Date : Dec 2019.
• Type : I2C type

Software Support

Example Description

This application allows manipulation of 6 channel volume control .

Example Libraries

• MikroSDK.Board
• MikroSDK.Log
• Click.EVC

Example Key Functions

• evc_cfg_setup Config Object Initialization function.

void evc_cfg_setup ( evc_cfg_t *cfg );

• evc_init Initialization function.

err_t evc_init ( evc_t *ctx, evc_cfg_t *cfg );

• evc_default_cfg Click Default Configuration function.

void evc_default_cfg ( evc_t *ctx );

• evc_set_volume_part This function sets the volume for the selected channel, uses two variables.

void evc_set_volume_part ( evc_t *ctx, uint8_t channel, uint8_t volume1, uint8_t volume2 );

• evc_set_volume_full This function sets the volume for the selected channel, uses one volume variables.

void evc_set_volume_full ( evc_t *ctx, uint8_t channel, int8_t volume );

• evc_mute This function mute and unmute the sound.

void evc_mute ( evc_t *ctx, uint8_t mute );

Application Init

Initialization driver init, default configuration and sets first volume.

void application_init ( void )
{
log_cfg_t log_cfg;
    evc_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.

    evc_cfg_setup( &cfg );
    EVC_MAP_MIKROBUS( cfg, MIKROBUS_1 );
    evc_init( &evc, &cfg );

    evc_default_cfg( &evc );
    log_printf( &logger, " \\-/-\\-/ START EQUALIZER \\-/-\\-/ ");
}

Application Task

Emulates user input and exectuyrd functions based on set of valid commands.

void application_task ( void )
{
 //  Task implementation.

    test_change( &evc );

    play( &evc );
}

Note

Additional Functions : void test_change ( ) - Emulates user input to change parameters. void mute( ) - Mute nad void play ( ) - Start new settings of the cahnnel uint8_t get_current_channel ( ) - Return current channel.

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.

---