AMFM Click

AM/FM Click is a RADIO RECEIVER Click board™ that can be used to listen to music from the AM and FM radio bands.

Click Product page

Click library

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

Software Support

We provide a library for the AmFm 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 AmFm Click driver.

Standard key functions :

• amfm_cfg_setup Config Object Initialization function.

  void amfm_cfg_setup ( amfm_cfg_t *cfg );

• amfm_init Initialization function.

  err_t amfm_init ( amfm_t *ctx, amfm_cfg_t *cfg );

• amfm_default_cfg Click Default Configuration function.

  void amfm_default_cfg ( amfm_t *ctx );

Example key functions :

• amfm_tune_up This function increments current frequency for 10 KHz.

  uint8_t amfm_tune_up ( amfm_t *ctx );

• amfm_set_volume This function sets volume level in range: 0 - 63.

  uint8_t amfm_set_volume ( amfm_t *ctx, uint8_t volume );

• amfm_get_stc This function checks STC bit state.

  uint8_t amfm_get_stc ( amfm_t *ctx );

Examples Description

This app simulate RADIO RECEIVER.

The demo application is composed of two sections :

Application Init

Initializes device.

void application_init ( void )
{
    log_cfg_t log_cfg;
    amfm_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.

    amfm_cfg_setup( &cfg );
    AMFM_MAP_MIKROBUS( cfg, MIKROBUS_1 );
    amfm_init( &amfm, &cfg );

    Delay_ms ( 100 );
    status = amfm_init_device( &amfm );
    if ( 0 == status )
    {
        log_printf( &logger, "> > > app init done < < <\r\n" );
    }
    else if ( 1 == status )
    {
        log_printf( &logger, "> > >    timeout    < < <\r\n" );
    }
    Delay_ms ( 1000 );

    amfm_case_seek( &amfm );
    amfm_case_memorize( );
    Delay_ms ( 1000 );

    amfm_case_seek( &amfm );
    amfm_case_memorize( );
    Delay_ms ( 1000 );

    amfm_case_seek( &amfm );
    amfm_case_memorize( );
    Delay_ms ( 1000 );

    amfm_case_seek( &amfm );
    amfm_case_memorize( );
    Delay_ms ( 1000 );

    amfm_case_seek( &amfm );
    amfm_case_memorize( );
    Delay_ms ( 1000 );

    amfm_case_plus( &amfm );
    Delay_ms ( 1000 );
}

Application Task

Several additional functions are executed and printed over the terminal.

void application_task ( void )
{
    amfm_case_station_1( &amfm );
    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 );

    amfm_case_station_2( &amfm );
    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 );

    amfm_case_station_3( &amfm );
    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 );

    amfm_case_station_4( &amfm );
    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 );

    amfm_case_station_5( &amfm );
    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 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.AmFm

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.