I'm using the VS1053 codec breakout with my Arduino Uno.
(https://www.adafruit.com/product/1381)
I have things set up according the Adafruit's overview/startup guide
(https://learn.adafruit.com/adafruit-vs1 ... g-recorder)
And using the Adafruit VS1053 Library for Arduino.
(https://github.com/adafruit/Adafruit_VS1053_Library)
I have an example script working to play an audio file (player_simple.ino), but I need to use one of the patch files from vlsi (https://www.vlsi.fi/en/support/software ... tches.html).
I want to use the pitch/tempo shifter patch, which is sort of explained in this document from vlsi, section 1.10: https://www.vlsi.fi/fileadmin/software/ ... atches.pdf
Question
How do you properly load a plugin / apply a patch? and then after that, how do you use that patch in your .ino script?
I am fairly new to this type of coding and in this language.
The Adafruit VS1053 Library has a couple of functions that look useful - applyPatch() and loadPlugin() - but I don't understand what they do or what inputs they need.
I tried using loadPlugin() like this:
Code: Select all
#include <SPI.h>
#include <Adafruit_VS1053.h>
#include <SD.h>
void setup() {
//other setup code not included for simplicity
// load plugin/patch file
if (! musicPlayer.loadPlugin("pitch.plg")) {
Serial.println("Couldn't load plugin!");
while (1);
}
}
void loop() {
// unkown code to change the tempo
}
As for utilizing the plugin, per the vlsi documentation, I tried writing to the SCI to enable the pitch/tempo shifter like this:
Code: Select all
// Enable pitch/tempo shifter.
// see https://www.vlsi.fi/fileadmin/software/VS10XX/vs1053b-patches.pdf
// and https://github.com/adafruit/Adafruit_VS1053_Library/blob/master/Adafruit_VS1053.h
// write pitch/tempo to AICTRL0, and write 0x51 to AIADDR
// musicPlayer.sciWrite(uint8_t addr, uint16_t data);
musicPlayer.sciWrite(VS1053_SCI_AICTRL0, -16384);
musicPlayer.sciWrite(VS1053_SCI_AIADDR, 0x51);
This is the original example script called "player_simle.ino" for playing an audio file off the SD card:
Code: Select all
/***************************************************
This is an example for the Adafruit VS1053 Codec Breakout
Designed specifically to work with the Adafruit VS1053 Codec Breakout
----> https://www.adafruit.com/products/1381
Adafruit invests time and resources providing this open source code,
please support Adafruit and open-source hardware by purchasing
products from Adafruit!
Written by Limor Fried/Ladyada for Adafruit Industries.
BSD license, all text above must be included in any redistribution
****************************************************/
// include SPI, MP3 and SD libraries
#include <SPI.h>
#include <Adafruit_VS1053.h>
#include <SD.h>
// define the pins used
//#define CLK 13 // SPI Clock, shared with SD card
//#define MISO 12 // Input data, from VS1053/SD card
//#define MOSI 11 // Output data, to VS1053/SD card
// Connect CLK, MISO and MOSI to hardware SPI pins.
// See http://arduino.cc/en/Reference/SPI "Connections"
// These are the pins used for the breakout example
#define BREAKOUT_RESET 9 // VS1053 reset pin (output)
#define BREAKOUT_CS 10 // VS1053 chip select pin (output)
#define BREAKOUT_DCS 8 // VS1053 Data/command select pin (output)
// These are the pins used for the music maker shield
#define SHIELD_RESET -1 // VS1053 reset pin (unused!)
#define SHIELD_CS 7 // VS1053 chip select pin (output)
#define SHIELD_DCS 6 // VS1053 Data/command select pin (output)
// These are common pins between breakout and shield
#define CARDCS 4 // Card chip select pin
// DREQ should be an Int pin, see http://arduino.cc/en/Reference/attachInterrupt
#define DREQ 3 // VS1053 Data request, ideally an Interrupt pin
Adafruit_VS1053_FilePlayer musicPlayer =
// create breakout-example object!
Adafruit_VS1053_FilePlayer(BREAKOUT_RESET, BREAKOUT_CS, BREAKOUT_DCS, DREQ, CARDCS);
// create shield-example object!
//Adafruit_VS1053_FilePlayer(SHIELD_RESET, SHIELD_CS, SHIELD_DCS, DREQ, CARDCS);
void setup() {
Serial.begin(9600);
Serial.println("Adafruit VS1053 Simple Test");
if (! musicPlayer.begin()) { // initialise the music player
Serial.println(F("Couldn't find VS1053, do you have the right pins defined?"));
while (1);
}
Serial.println(F("VS1053 found"));
if (!SD.begin(CARDCS)) {
Serial.println(F("SD failed, or not present"));
while (1); // don't do anything more
}
// list files
printDirectory(SD.open("/"), 0);
// Set volume for left, right channels. lower numbers == louder volume!
musicPlayer.setVolume(20,20);
// Timer interrupts are not suggested, better to use DREQ interrupt!
//musicPlayer.useInterrupt(VS1053_FILEPLAYER_TIMER0_INT); // timer int
// If DREQ is on an interrupt pin (on uno, #2 or #3) we can do background
// audio playing
musicPlayer.useInterrupt(VS1053_FILEPLAYER_PIN_INT); // DREQ int
// Play one file, don't return until complete
Serial.println(F("Playing track 001"));
musicPlayer.playFullFile("/track001.mp3");
// Play another file in the background, REQUIRES interrupts!
Serial.println(F("Playing track 002"));
musicPlayer.startPlayingFile("/track002.mp3");
}
void loop() {
// File is playing in the background
if (musicPlayer.stopped()) {
Serial.println("Done playing music");
while (1) {
delay(10); // we're done! do nothing...
}
}
if (Serial.available()) {
char c = Serial.read();
// if we get an 's' on the serial console, stop!
if (c == 's') {
musicPlayer.stopPlaying();
}
// if we get an 'p' on the serial console, pause/unpause!
if (c == 'p') {
if (! musicPlayer.paused()) {
Serial.println("Paused");
musicPlayer.pausePlaying(true);
} else {
Serial.println("Resumed");
musicPlayer.pausePlaying(false);
}
}
}
delay(100);
}
/// File listing helper
void printDirectory(File dir, int numTabs) {
while(true) {
File entry = dir.openNextFile();
if (! entry) {
// no more files
//Serial.println("**nomorefiles**");
break;
}
for (uint8_t i=0; i<numTabs; i++) {
Serial.print('\t');
}
Serial.print(entry.name());
if (entry.isDirectory()) {
Serial.println("/");
printDirectory(entry, numTabs+1);
} else {
// files have sizes, directories do not
Serial.print("\t\t");
Serial.println(entry.size(), DEC);
}
entry.close();
}
}