Experience sound like never before with VS1053 and PIC18F57Q43
Unleash your soundtrack: Your ultimate MP3 solution!
Published Feb 13, 2024
Click board™
MP3 Click
Dev. board
Curiosity Nano with PIC18F57Q43
Compiler
NECTO Studio
MCU
PIC18F57Q43
Say goodbye to format compatibility issues and focus on what matters most – enjoying your favorite tunes, no matter the file type
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Hardware Overview
How does it work?
MP3 Click is based on the VS1053, an Ogg Vorbis, MP3, AAC, WMA, FLAC, and MIDI audio codec chip from VLSI Solution. It is a versatile MP3 decoder/encoder chip that belongs to VLSI Solution's extensive audio processor family and can decode even newer AAC files. It can decode MPEG 1 and MPEG 2 audio layer III (CBR+VBR+ABR) as parts of the MP3 format, MP1, and MP2, MPEG 4, WAV, General MIDI, and FLAC lossless audio with software plugins up to 24bits and 48KHz. The stereo earphone driver can drive a 30Ω load and has zero-cross detection for smooth volume change. The streaming support for MP3 and WAV, EarSpeaker spatial processing, bass, and treble controls are also included. The VS1053 can encode three different formats from a microphone connector in mono or stereo. Those
formats are lossless 16-bit PCM, IMA ADPSM, and a highly compressed, high-quality Ogg Vorbis with a software plugin. Users can easily implement microcontroller software to read MP3 files chunk by chunk and send them the same way to the host MCU. The MP3 Click receives its input bitstream through a serial input bus, which it listens to as a system peripheral. The input stream is decoded and passed through a digital volume control to an 18-bit oversampling, multi-bit, sigma-delta DAC. The decoding is controlled via a serial control bus. In addition to the basic decoding, adding application-specific features, like DSP effects, to the user RAM is possible. The MP3 Click uses an SPI serial interface to communicate with the host MCU. The SPI is used for both the chip's serial data interface (SDI) and serial control interface
(SCI). The DCS (data chip select) pin forces the serial interface into Standby mode while the chip is activated with a low logic state. In addition, the codec chip can be reset over the RST pin. The data request pin (DREQ) signals if VS1503's 2048-byte FIFO can receive data. It may turn LOW or HIGH anytime, even during a byte transmission. It should be only used to decide whether to send more bytes, while the transmission that has already started doesn't have to be aborted. This Click board™ can be operated only with a 3.3V logic voltage level. The board must perform appropriate logic voltage level conversion before using MCUs with different logic levels. Also, it 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.
Microcontroller Overview
MCU Card / MCU
Architecture
PIC
MCU Memory (KB)
128
Silicon Vendor
Microchip
Pin count
48
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.
These standard small stereo earphones offer a high-quality listening experience with their top-notch stereo cable and connector. Designed for universal compatibility, they effortlessly connect to all MIKROE mikromedia and multimedia boards, making them an ideal choice for your electronic projects. With a rated power of 100mW, the earphones provide crisp audio across a broad frequency range from 20Hz to 20kHz. They boast a sensitivity of 100 ± 5dB and an impedance of 32Ω ± 15%, ensuring optimal sound quality. The Φ15mm speaker delivers clear and immersive audio. Cost-effective and versatile, these earphones are perfect for testing your prototype devices, offering an affordable and reliable audio solution to complement your projects.
Used MCU Pins
mikroBUS™ mapper
Take a closer look
Click board™ Schematic
Step by step
Project assembly
Start by selecting your development board and Click board™. Begin with the Curiosity Nano with PIC18F57Q43 as your development board.
Track your results in real time
Application Output
1. Application Output - In Debug mode, the 'Application Output' window enables real-time data monitoring, offering direct insight into execution results. Ensure proper data display by configuring the environment correctly using the provided tutorial.
2. UART Terminal - Use the UART Terminal to monitor data transmission via a USB to UART converter, allowing direct communication between the Click board™ and your development system. Configure the baud rate and other serial settings according to your project's requirements to ensure proper functionality. For step-by-step setup instructions, refer to the provided tutorial.
3. Plot Output - The Plot feature offers a powerful way to visualize real-time sensor data, enabling trend analysis, debugging, and comparison of multiple data points. To set it up correctly, follow the provided tutorial, which includes a step-by-step example of using the Plot feature to display Click board™ readings. To use the Plot feature in your code, use the function: plot(*insert_graph_name*, variable_name);. This is a general format, and it is up to the user to replace 'insert_graph_name' with the actual graph name and 'variable_name' with the parameter to be displayed.
Software Support
Library Description
This library contains API for MP3 Click driver.
Key functions:
mp3_cmd_write- This function writes one byte (command) to MP3 audio decodermp3_data_write- This function writes one byte ( data ) to MP3 audio decodermp3_data_write_32- This function Write 32 bytes ( data ) to MP3 audio decoder
Open Source
Code example
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.
/*!
* \file
* \brief Mp3 Click example
*
* # Description
* This app demonstrates the use of MP3 Click by playing the specified sound
* from the mp3_resources.h file.
*
* The demo application is composed of two sections :
*
* ## Application Init
* Initializes the driver and performs the default Click configuration.
*
* ## Application Task
* Playing the specified sound form the mp3_resources.h file.
*
* \author MikroE Team
*
*/
#include "board.h"
#include "log.h"
#include "mp3.h"
#include "mp3_resources.h"
static mp3_t mp3;
static log_t logger;
void application_init ( void )
{
log_cfg_t log_cfg;
mp3_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.
mp3_cfg_setup( &cfg );
MP3_MAP_MIKROBUS( cfg, MIKROBUS_1 );
mp3_init( &mp3, &cfg );
mp3_reset( &mp3 );
mp3_cmd_write( &mp3, MP3_MODE_ADDR, 0x0800 );
mp3_cmd_write( &mp3, MP3_BASS_ADDR, 0x7A00 );
mp3_cmd_write( &mp3, MP3_CLOCKF_ADDR, 0x2000 );
// MP3 set volume, maximum volume is 0x00 and total silence is 0xFE.
mp3_set_volume( &mp3, 0x2F, 0x2F );
Delay_ms ( 1000 );
log_info( &logger, " Application Task " );
}
void application_task ( void )
{
uint32_t file_size = sizeof ( gandalf_sax_mp3_compressed );
uint32_t file_pos = 0;
uint8_t data_buf[ 32 ] = { 0 };
log_printf( &logger, " Playing audio..." );
for ( file_pos = 0; ( file_pos + 32 ) <= file_size; file_pos += 32 )
{
memcpy ( data_buf, &gandalf_sax_mp3_compressed[ file_pos ], 32 );
while ( MP3_OK != mp3_data_write_32( &mp3, data_buf ) );
}
for ( ; file_pos < file_size; file_pos++ )
{
while ( MP3_OK != mp3_data_write( &mp3, gandalf_sax_mp3_compressed[ file_pos ] ) );
}
log_printf( &logger, "Done\r\n\n" );
}
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
