audioamp9  2.1.0.0
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AudioAmp 9 Click

AudioAMP 9 Click is a compact add-on board reproducing input audio signals with desired volume and power levels at sound-producing output elements. This board features the PAM8124, a 10W efficient, Class-D audio power amplifier from Diodes Incorporated for driving stereo speakers in a single-ended configuration.

Click Product page


Click library

  • Author : Stefan Ilic
  • Date : Jan 2023.
  • Type : GPIO type

Software Support

We provide a library for the AudioAmp 9 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 AudioAmp 9 Click driver.

Standard key functions :

Example key functions :

Example Description

This example demonstrates the use of the AudioAmp 9 Click board by

changing the gain level.

The demo application is composed of two sections :

Application Init

Initializes the driver and performs default configuration putting AudioAmp 9 Click

into Gain 1 mode with unmuted output.

void application_init ( void )
{
log_cfg_t log_cfg;
audioamp9_cfg_t audioamp9_cfg;
LOG_MAP_USB_UART( log_cfg );
log_init( &logger, &log_cfg );
log_info( &logger, " Application Init " );
// Click initialization.
audioamp9_cfg_setup( &audioamp9_cfg );
AUDIOAMP9_MAP_MIKROBUS( audioamp9_cfg, MIKROBUS_1 );
if ( DIGITAL_OUT_UNSUPPORTED_PIN == audioamp9_init( &audioamp9, &audioamp9_cfg ) )
{
log_error( &logger, " Communication init." );
for ( ; ; );
}
audioamp9_default_cfg ( &audioamp9 );
log_info( &logger, " Application Task " );
}

Application Task

Controlling the volume of the speaker by setting the gain level, and increasing it

every 5 seconds until the maximum level is reached, then the sound is muted for 5 seconds.

void application_task ( void )
{
for ( uint8_t vol_lvl = AUDIOAMP9_GAIN_LEVEL1; vol_lvl <= AUDIOAMP9_GAIN_LEVEL4; vol_lvl++ )
{
audioamp9_set_gain_level( &audioamp9, vol_lvl );
log_printf( &logger, " Volume gain level %d \r\n ", vol_lvl );
Delay_ms ( 1000 );
Delay_ms ( 1000 );
Delay_ms ( 1000 );
Delay_ms ( 1000 );
Delay_ms ( 1000 );
}
log_printf( &logger, " Sound is muted \r\n " );
audioamp9_mute_on( &audioamp9 );
Delay_ms ( 1000 );
Delay_ms ( 1000 );
Delay_ms ( 1000 );
Delay_ms ( 1000 );
Delay_ms ( 1000 );
log_printf( &logger, " Sound is unmuted \r\n " );
audioamp9_mute_off( &audioamp9 );
}

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.AudioAmp9

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.


audioamp9_shutdown_on
void audioamp9_shutdown_on(audioamp9_t *ctx)
AudioAmp 9 shutdown on function.
audioamp9_set_gain_level
err_t audioamp9_set_gain_level(audioamp9_t *ctx, uint8_t gain_level)
AudioAmp 9 set gain function.
audioamp9_default_cfg
void audioamp9_default_cfg(audioamp9_t *ctx)
AudioAmp 9 default configuration function.
audioamp9_mute_off
void audioamp9_mute_off(audioamp9_t *ctx)
AudioAmp 9 mute off function.
audioamp9_init
err_t audioamp9_init(audioamp9_t *ctx, audioamp9_cfg_t *cfg)
AudioAmp 9 initialization function.
AUDIOAMP9_GAIN_LEVEL4
#define AUDIOAMP9_GAIN_LEVEL4
Definition: audioamp9.h:65
audioamp9_cfg_t
AudioAmp 9 Click configuration object.
Definition: audioamp9.h:110
application_task
void application_task(void)
Definition: main.c:62
audioamp9_t
AudioAmp 9 Click context object.
Definition: audioamp9.h:97
AUDIOAMP9_MAP_MIKROBUS
#define AUDIOAMP9_MAP_MIKROBUS(cfg, mikrobus)
MikroBUS pin mapping.
Definition: audioamp9.h:83
application_init
void application_init(void)
Definition: main.c:30
audioamp9_mute_on
void audioamp9_mute_on(audioamp9_t *ctx)
AudioAmp 9 mute on function.
AUDIOAMP9_GAIN_LEVEL1
#define AUDIOAMP9_GAIN_LEVEL1
AudioAmp 9 gain level setting.
Definition: audioamp9.h:62
audioamp9_cfg_setup
void audioamp9_cfg_setup(audioamp9_cfg_t *cfg)
AudioAmp 9 configuration object setup function.