Create a high-quality audio system with MA12070 and PIC18F57Q43

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AudioAmp 8 Click with Curiosity Nano with PIC18F57Q43

Published Feb 13, 2024

Click board™

AudioAmp 8 Click

Dev Board

Curiosity Nano with PIC18F57Q43

Compiler

NECTO Studio

MCU

PIC18F57Q43

Super-efficient audio power amplifier based on proprietary multi-level switching technology

Hardware Overview

How does it work?

AudioAmp 8 Click is based on the MA12070, a super-efficient audio power amplifier based on proprietary multi-level switching technology that enables low power loss during operation from Infineon Technologies. The MA12070 has an intelligent power management algorithm that applies automatic power mode selection during audio playback. In this state, the amplifier will seamlessly transition between three different power modes depending on the audio level to achieve optimal power loss, audio performance, and EMI. Alternatively, it is also possible to manually select the desired power mode for the MA12070 via a serial interface. The MA12070 communicates with MCU using the standard I2C 2-Wire interface that supports Standard (100 kHz) and Fast (400 kHz) modes of operation. It has a 7-bit slave address with the first five MSBs fixed to 01000. The user programs the address pins and determines the value of the last two LSBs

of the slave address, which can be selected by positioning onboard SMD jumpers labeled as ADDR SEL to an appropriate position marked as 0 or 1. This Click board™ supports an external power supply for the motor, which can be connected to the input terminal labeled as VIN and should be within the range of 6V to 26V, while the input audio can be brought to the input jack labeled as AUDIO IN and after specific processing reproduced on the speakers of the desired channel SPK OUT. The MA12070 is highly flexible regarding the configuration of the four power amplifier channels. It can be set to four different output configurations by setting the configuration pins MS0 and MS1, routed to the INT and PWM pins of the mikroBUS™ socket. In addition to these pins, this Click board™ uses a few more pins of the mikroBUS™ socket. The Enable pin, labeled as EN and routed to the CS pin of the mikroBUS™ socket, optimizes power consumption

used for power ON/OFF purposes, while the MUT pin routed to the RST pin allows users to mute audio on connected speakers. Besides, it is possible to detect operational irregularities, such as overcurrent and short-circuit detection. An indication of such a condition is performed using the red LED indicator labeled as ERROR, alongside an audio clipping indication accomplished using the blue LED indicator marked CLIP, indicating when audio output is close to clipping. This Click board™ can only be operated with a 5V logic voltage level. The board must perform appropriate logic voltage level conversion before using MCUs with different logic levels. However, the Click board™ comes equipped with a library containing functions and an example code that can be used as a reference for further development.

Features overview

Development board

PIC18F57Q43 Curiosity Nano evaluation kit is a cutting-edge hardware platform designed to evaluate microcontrollers within the PIC18-Q43 family. Central to its design is the inclusion of the powerful PIC18F57Q43 microcontroller (MCU), offering advanced functionalities and robust performance. Key features of this evaluation kit include a yellow user LED and a responsive

mechanical user switch, providing seamless interaction and testing. The provision for a 32.768kHz crystal footprint ensures precision timing capabilities. With an onboard debugger boasting a green power and status LED, programming and debugging become intuitive and efficient. Further enhancing its utility is the Virtual serial port (CDC) and a debug GPIO channel (DGI

GPIO), offering extensive connectivity options. Powered via USB, this kit boasts an adjustable target voltage feature facilitated by the MIC5353 LDO regulator, ensuring stable operation with an output voltage ranging from 1.8V to 5.1V, with a maximum output current of 500mA, subject to ambient temperature and voltage constraints.

PIC18F57Q43 Curiosity Nano double side image

Microcontroller Overview

MCU Card / MCU

Architecture

PIC

MCU Memory (KB)

128

Silicon Vendor

Microchip

Pin count

RAM (Bytes)

8196

You complete me!

Accessories

Curiosity Nano Base for Click boards is a versatile hardware extension platform created to streamline the integration between Curiosity Nano kits and extension boards, tailored explicitly for the mikroBUS™-standardized Click boards and Xplained Pro extension boards. This innovative base board (shield) offers seamless connectivity and expansion possibilities, simplifying experimentation and development. Key features include USB power compatibility from the Curiosity Nano kit, alongside an alternative external power input option for enhanced flexibility. The onboard Li-Ion/LiPo charger and management circuit ensure smooth operation for battery-powered applications, simplifying usage and management. Moreover, the base incorporates a fixed 3.3V PSU dedicated to target and mikroBUS™ power rails, alongside a fixed 5.0V boost converter catering to 5V power rails of mikroBUS™ sockets, providing stable power delivery for various connected devices.

Used MCU Pins

mikroBUS™ mapper

Audio Mute

PA7

RST

Device Enable

PD4

SCK

MISO

MOSI

3.3V

Ground

GND

Output Stage Config. 0

PB0

PWM

Output Stage Config. 1

PA6

INT

I2C Clock

PB2

SCL

I2C Data

PB1

SDA

Power Supply

Ground

GND

Take a closer look

Schematic

Step by step

Project assembly

Curiosity Nano Base for Click boards front image hardware assembly

Start by selecting your development board and Click board™. Begin with the Curiosity Nano with PIC18F57Q43 as your development board.

Charger 27 Click front image hardware assembly

PIC18F47Q10 Curiosity Nano front image hardware assembly

Charger 27 Click complete accessories setup image hardware assembly

Curiosity Nano with PICXXX Access MB 1 - upright/background hardware assembly

PIC18F57Q43 Curiosity MCU Step hardware assembly

Necto No Display image step 8 hardware assembly

Debug Image Necto Step hardware assembly

Track your results in real time

Application Output via Debug Mode

1. Once the code example is loaded, pressing the "DEBUG" button initiates the build process, programs it on the created setup, and enters Debug mode.

2. After the programming is completed, a header with buttons for various actions within the IDE becomes visible. Clicking the green "PLAY" button starts reading the results achieved with the Click board™. The achieved results are displayed in the Application Output tab.

Software Support

Library Description

This library contains API for Audio Amp 8 Click driver.

Key functions:

audioamp8_cfg_setup - Config Object Initialization function.
audioamp8_init - Initialization function.
audioamp8_default_cfg - Click Default Configuration function.

Open Source

Code example

This example can be found in NECTO Studio. Feel free to download the code, or you can copy the code below.

/*!
 * @file main.c
 * @brief AudioAmp8 Click example
 *
 * # Description
 * This library contains API for AudioAmp 8 Click driver.
 * The library initializes and defines the I2C bus drivers 
 * to write and read data from registers. 
 *
 * The demo application is composed of two sections :
 *
 * ## Application Init
 * The initialization of I2C  module, log UART, and additional pins. 
 * After the driver init and executing a default configuration, 
 * the app performs a BTL signal configuration, configures power mode
 * and configures power mode profile.
 *
 * ## Application Task
 * This is an example that shows the use of a AudioAmp 8 Click board™.
 * Displays status monitoring for channel 0 or channel 1.
 * This task repeats once every 2 seconds.
 * 
 * ## Additional Function
 * - static void channel_status_monitoring ( uint8_t ch_sel ) - The function displays the status monitoring channel.
 *
 * @author Nenad Filipovic
 *
 */

#include "board.h"
#include "log.h"
#include "audioamp8.h"

static audioamp8_t audioamp8;
static log_t logger;
static audioamp8_pwr_mon_cfg_t pwr_mode;
static audioamp8_pwr_mod_profile_cfg_t pm_profile;
static audioamp8_monitor_channel_t ch_mon;

static void channel_status_monitoring ( uint8_t ch_sel ) 
{
    audioamp8_channel_monitoring( &audioamp8, ch_sel, &ch_mon );
    Delay_ms ( 100 );
    log_printf( &logger, " Frequency mode    : %d\r\n", ( uint16_t ) ch_mon.freq_mode );
    log_printf( &logger, " Power mode        : %d\r\n", ( uint16_t ) ch_mon.pwr_mode );

    log_printf( &logger, " Channel %d mute    : ", ( uint16_t ) ch_sel );
    if ( ch_mon.mute_mon == AUDIOAMP8_SET_ENABLE )
    {
        log_printf( &logger, "ON\r\n" );    
    }
    else
    {
        log_printf( &logger, "OFF\r\n" );    
    }

    log_printf( &logger, " Channel %d VDD     : ", ( uint16_t ) ch_sel );
    if ( ch_mon.vdd_mon == AUDIOAMP8_SET_ENABLE )
    {
        log_printf( &logger, "ON\r\n" );    
    }
    else
    {
        log_printf( &logger, "OFF\r\n" );    
    }

    log_printf( &logger, " Channel %d PVDD    : ", ( uint16_t ) ch_sel );
    if ( ch_mon.pvdd_mon == AUDIOAMP8_SET_ENABLE )
    {
        log_printf( &logger, "ON\r\n" );    
    }
    else
    {
        log_printf( &logger, "OFF\r\n" );    
    }

    log_printf( &logger, " Cfly1 protection  : " );
    if ( ch_mon.cfly1_mon == AUDIOAMP8_SET_ENABLE )
    {
        log_printf( &logger, "ON\r\n" );    
    }
    else
    {
        log_printf( &logger, "OFF\r\n" );    
    }

    log_printf( &logger, " Cfly2 protection  : " );
    if ( ch_mon.cfly2_mon == AUDIOAMP8_SET_ENABLE )
    {
        log_printf( &logger, "ON\r\n" );    
    }
    else
    {
        log_printf( &logger, "OFF\r\n" );    
    }

    log_printf( &logger, " Current protection: " );
    if ( ch_mon.ovc_prot == AUDIOAMP8_SET_ENABLE )
    {
        log_printf( &logger, "ON\r\n" );    
    }
    else
    {
        log_printf( &logger, "OFF\r\n" );    
    }

    log_printf( &logger, " Modulation index  : %d\r\n", ( uint16_t ) ch_mon.modul_index_mon );
    log_printf( &logger, "-------------------------\r\n" );
}

void application_init ( void ) 
{
    log_cfg_t log_cfg;  /**< Logger config object. */
    audioamp8_cfg_t audioamp8_cfg;  /**< Click config object. */

    /** 
     * 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.
    audioamp8_cfg_setup( &audioamp8_cfg );
    AUDIOAMP8_MAP_MIKROBUS( audioamp8_cfg, MIKROBUS_1 );
    err_t init_flag = audioamp8_init( &audioamp8, &audioamp8_cfg );
    if ( I2C_MASTER_ERROR == init_flag ) 
    {
        log_error( &logger, " Application Init Error. " );
        log_info( &logger, " Please, run program again... " );
        for ( ; ; );
    }

    if ( AUDIOAMP8_ERROR == audioamp8_default_cfg ( &audioamp8 ) )
    {
        log_error( &logger, " Default configuration." );
        for ( ; ; );
    }
    log_info( &logger, " Application Task " );
    log_printf( &logger, "-------------------------\r\n" );
    Delay_ms ( 1000 );
}

void application_task ( void ) 
{
    channel_status_monitoring( AUDIOAMP8_SET_MON_CH_0 );
    Delay_ms ( 1000 );
}

int main ( void ) 
{
    /* Do not remove this line or clock might not be set correctly. */
    #ifdef PREINIT_SUPPORTED
    preinit();
    #endif
    
    application_init( );
    
    for ( ; ; ) 
    {
        application_task( );
    }

    return 0;
}

// ------------------------------------------------------------------------ END

/*!
 * @file main.c
 * @brief AudioAmp8 Click example
 *
 * # Description
 * This library contains API for AudioAmp 8 Click driver.
 * The library initializes and defines the I2C bus drivers 
 * to write and read data from registers. 
 *
 * The demo application is composed of two sections :
 *
 * ## Application Init
 * The initialization of I2C  module, log UART, and additional pins. 
 * After the driver init and executing a default configuration, 
 * the app performs a BTL signal configuration, configures power mode
 * and configures power mode profile.
 *
 * ## Application Task
 * This is an example that shows the use of a AudioAmp 8 Click board™.
 * Displays status monitoring for channel 0 or channel 1.
 * This task repeats once every 2 seconds.
 * 
 * ## Additional Function
 * - static void channel_status_monitoring ( uint8_t ch_sel ) - The function displays the status monitoring channel.
 *
 * @author Nenad Filipovic
 *
 */

#include "board.h"
#include "log.h"
#include "audioamp8.h"

static audioamp8_t audioamp8;
static log_t logger;
static audioamp8_pwr_mon_cfg_t pwr_mode;
static audioamp8_pwr_mod_profile_cfg_t pm_profile;
static audioamp8_monitor_channel_t ch_mon;

static void channel_status_monitoring ( uint8_t ch_sel ) 
{
    audioamp8_channel_monitoring( &audioamp8, ch_sel, &ch_mon );
    Delay_ms ( 100 );
    log_printf( &logger, " Frequency mode    : %d\r\n", ( uint16_t ) ch_mon.freq_mode );
    log_printf( &logger, " Power mode        : %d\r\n", ( uint16_t ) ch_mon.pwr_mode );

    log_printf( &logger, " Channel %d mute    : ", ( uint16_t ) ch_sel );
    if ( ch_mon.mute_mon == AUDIOAMP8_SET_ENABLE )
    {
        log_printf( &logger, "ON\r\n" );    
    }
    else
    {
        log_printf( &logger, "OFF\r\n" );    
    }

    log_printf( &logger, " Channel %d VDD     : ", ( uint16_t ) ch_sel );
    if ( ch_mon.vdd_mon == AUDIOAMP8_SET_ENABLE )
    {
        log_printf( &logger, "ON\r\n" );    
    }
    else
    {
        log_printf( &logger, "OFF\r\n" );    
    }

    log_printf( &logger, " Channel %d PVDD    : ", ( uint16_t ) ch_sel );
    if ( ch_mon.pvdd_mon == AUDIOAMP8_SET_ENABLE )
    {
        log_printf( &logger, "ON\r\n" );    
    }
    else
    {
        log_printf( &logger, "OFF\r\n" );    
    }

    log_printf( &logger, " Cfly1 protection  : " );
    if ( ch_mon.cfly1_mon == AUDIOAMP8_SET_ENABLE )
    {
        log_printf( &logger, "ON\r\n" );    
    }
    else
    {
        log_printf( &logger, "OFF\r\n" );    
    }

    log_printf( &logger, " Cfly2 protection  : " );
    if ( ch_mon.cfly2_mon == AUDIOAMP8_SET_ENABLE )
    {
        log_printf( &logger, "ON\r\n" );    
    }
    else
    {
        log_printf( &logger, "OFF\r\n" );    
    }

    log_printf( &logger, " Current protection: " );
    if ( ch_mon.ovc_prot == AUDIOAMP8_SET_ENABLE )
    {
        log_printf( &logger, "ON\r\n" );    
    }
    else
    {
        log_printf( &logger, "OFF\r\n" );    
    }

    log_printf( &logger, " Modulation index  : %d\r\n", ( uint16_t ) ch_mon.modul_index_mon );
    log_printf( &logger, "-------------------------\r\n" );
}

void application_init ( void ) 
{
    log_cfg_t log_cfg;  /**< Logger config object. */
    audioamp8_cfg_t audioamp8_cfg;  /**< Click config object. */

    /** 
     * 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.
    audioamp8_cfg_setup( &audioamp8_cfg );
    AUDIOAMP8_MAP_MIKROBUS( audioamp8_cfg, MIKROBUS_1 );
    err_t init_flag = audioamp8_init( &audioamp8, &audioamp8_cfg );
    if ( I2C_MASTER_ERROR == init_flag ) 
    {
        log_error( &logger, " Application Init Error. " );
        log_info( &logger, " Please, run program again... " );
        for ( ; ; );
    }

    if ( AUDIOAMP8_ERROR == audioamp8_default_cfg ( &audioamp8 ) )
    {
        log_error( &logger, " Default configuration." );
        for ( ; ; );
    }
    log_info( &logger, " Application Task " );
    log_printf( &logger, "-------------------------\r\n" );
    Delay_ms ( 1000 );
}

void application_task ( void ) 
{
    channel_status_monitoring( AUDIOAMP8_SET_MON_CH_0 );
    Delay_ms ( 1000 );
}

int main ( void ) 
{
    /* Do not remove this line or clock might not be set correctly. */
    #ifdef PREINIT_SUPPORTED
    preinit();
    #endif
    
    application_init( );
    
    for ( ; ; ) 
    {
        application_task( );
    }

    return 0;
}

// ------------------------------------------------------------------------ END