Library Description

The library covers all the necessary functions to control 2x5W Amp Click board. Library have drivers for setting one of three operating mode ( Standby, Mute or Play mode ) and for setting one of four amplifier gain ( 20dB, 26dB, 30dB or 32dB ) selection resistors.

Key functions:

• uint8_t c2x5wamp_setMode( uint8_t selectMode ) - Set mode selection of the amplifier function.

• void c2x5wamp_play() - Set Play mode of the amplifier function.

• void c2x5wamp_gain20dB() - Set amplifier gain to 20dB function..

Examples description

The application is composed of the three sections :

• System Initialization - Initializes GPIO and LOG structures,
       set INT pin as input and sets AN, RST, CS and PWM pins as output.
• Application Initialization - Initialization driver enable's - GPIO and start write log.
• Application Task - (code snippet) This is a example which demonstrates the use of 2x5W Amp Click board. This examples first activates operation mode MUTE for 5 seconds and after that activates operation mode PLAY. When the device is in Play mode then changes the gain selection, first sets the minimum gain ( 20dB ) for 10 seconds and then sets the maximum gain ( 32dB ) for 5 seconds too. Results are being sent to the Usart Terminal where you can track their changes.

void applicationTask()
{   
    c2x5wamp_mute(); 
    mikrobus_logWrite( " MUTE MODE ", _LOG_LINE ); 
    Delay_ms( 5000 ); 
    mikrobus_logWrite( "-----------------------", _LOG_LINE ); 

    if ( c2x5wamp_setMode( _C2X5WAMP_MODE_PLAY ) )
    {
        mikrobus_logWrite( " PLAY MODE ", _LOG_LINE );
    } 
    else
    { 
        mikrobus_logWrite( " ERROR PLAY MODE ", _LOG_LINE );
    } 

    mikrobus_logWrite( "-----------------------", _LOG_LINE ); 
    c2x5wamp_gain20dB(); 
    mikrobus_logWrite( " Gain set to 20dB ", _LOG_LINE ); 
    Delay_ms( 10000 );

    mikrobus_logWrite( "- - - - - - - - - - - -", _LOG_LINE );
    c2x5wamp_gain32dB(); mikrobus_logWrite( " Gain set to 32dB ", _LOG_LINE );
    Delay_ms( 5000 ); 
    mikrobus_logWrite( "-----------------------", _LOG_LINE );
}

Other mikroE Libraries used in the example:

• GPIO
• UART

Additional notes and information

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.