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adds first community edition

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Stephan Eisfeld
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The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License. Of course, your program's commands
might be different; for a GUI interface, you would use an "about box".
You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU GPL, see
<http://www.gnu.org/licenses/>.
The GNU General Public License does not permit incorporating your program
into proprietary programs. If your program is a subroutine library, you
may consider it more useful to permit linking proprietary applications with
the library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License. But first, please read
<http://www.gnu.org/philosophy/why-not-lgpl.html>.

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TonUINO Community Edition
=========================
Hier ist die erste Version der TonUINO Firmware aus der Community. Da ich das Glück hatte, beim _Betatest_ dabei sein zu dürfen, habe ich für mich selber mit der Zeit immer weitere Funktionen nachgerüstet. Vielleicht sind diese ja für den ein oder anderen ebenfalls interessant:
## Funktionen
- **Erweiterung:** Die Verknüpfung der einzelnen Ordner zu den NFC Tags wird auf den Tags selbst und nicht mehr im EEPROM des Arduinos gespeichert. Damit gibt es im Prinzip kein Limit mehr für die Anzahl der unterstützten Tags.
- **Erweiterung:** Die serielle Konsole gibt zu Debug Zwecken allerlei nützlicher Daten aus, so dass man beim basteln zu jeder Zeit weiss was gerade passiert.
- **Erweiterung:** Man kann das anlernen von NFC Tags abbrechen (beide Laustärketasten 2sec gerückt halten).
- **Erweiterung:** Wenn TonUINO gerade keinen Titel spielt, kommt man mit "beide Laustärketasten 2sec gerückt halten“ in den NFC Tag löschen Modus, zum abbrechen des selbigen wiederum "beide Laustärketasten 2sec gerückt halten“. Somit kann man zu jeder Zeit auch einzelne NFC Tags wieder löschen um sie danach neu verwenden zu können.
- **Erweiterung:** Wenn TonUINO gerade einen Titel spielt und sich im Album Modus befindet, kann man mit den beiden Laustärketasten (jeweils 2sec gerückt halten) zum nächsten oder vorherigen Titel springen. Im Party Modus ebenfalls, allerdings dann nur zum nächsten Titel.
- **Erweiterung:** Man kann im Sketch die Maximallautstärke zum Schutz der Kinderohren (und der Nerven der Eltern ;-)) zwischnen 0 und 30 festlegen.
- **Erweiterung:** Wenn man einen passenden IR Empfänger nachrüstet, kann man TonUINO auch fernsteuern. Momentan sind die codes für zwei verschiedene Apple Fernbedienungen hinterlegt, das lässt sich aber für andere Fernbedienungen anpassen.
- **Erweiterung:** Wenn man eine LED nachrüstet, werden mit dieser LED ein paar nützliche Informationen angezeigt. Man sieht dann z.B. ob TonUINO gerade einen Titel spielt (LED pulsiert langsam), sich im NFC Tag löschen oder anlernen Modus befindet (LED blinkt alle 500ms), oder einfach nur idle ist (LED leuchtet dauerhaft).
- **Bugfix:** Man kann während man ein NFC Tag anlernt nicht mehr bestätigen ohne vorher wirklich sowohl Ordner als auch Wiedergabemodus ausgewählt zu haben.
## Dokumentation
Der Sketch ist relativ gut dokumentiert und am Anfang ist auch nochmal alles zusammen gefasst (allerdings auf Englisch). Dort finden sich dann auch nochmal eine generelle Übersicht der Funktionen und Informationen wie man die Pins definiert usw., weil das von Aufbau zu Aufbau verschieden sein kann. Ebenfalls ist dort erklärt wo der optionale IR Empfänger und die LED anzuschliessen sind etc. etc.
## Audio Meldungen
Ihr könnt die benötigten Audiomeldunden natürlich selbst einsprechen (siehe `audio_messages.txt`). Wem das zu aufwendig ist, kann das beigelegte shell script `create_audio_messages.sh` verwenden, welches alle MP3s in einem Rutsch erzeugt. Dazu wird sowohl das `say` Kommando (von MacOS) als auch `ffmpeg` benötigt. Der erzeugte Ordner `mp3` ist so wie er ist auf die SD Karte zu kopieren. Bitte achtet darauf, dass wirklich keine anderen Dateien (Stichwort MacOS...) auf der Karte landen, da das MP3 Modul da sehr pingelig ist.
## Lizenz
GPL v3. Siehe `LICENSE` Datei.

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mp3/0100.mp3|Es kann los gehen!
mp3/0101.mp3|Eine neue Karte wurde erkannt. Bitte lasse die Karte auf der Box liegen, bis der Vorgang abgeschlossen ist. Verwende nun die Lautstärketasten um einen Ordner für die Karte auszuwählen, und bestätige mit der Pausetaste.
mp3/0102.mp3|Ok, ich habe die Karte mit dem ausgewählten Ordner verknüpft. Verwende nun die Lautstärketasten um den Wiedergabemodus für die Karte auszuwählen, und bestätige mit der Pausetaste.
mp3/0103.mp3|Hörspielmodus. Einen zufälligen Titel aus dem Ordner wiedergeben.
mp3/0104.mp3|Albummodus. Den kompletten Ordner wiedergeben.
mp3/0105.mp3|Partymodus. Den Ordner zufällig wiedergeben.
mp3/0110.mp3|Ok, ich habe die Karte konfiguriert. Du kannst jetzt die Karte von der Box nehmen.
mp3/0111.mp3|Bitte lege die zu löschende Karte auf die Box und warte auf die Bestätigung.
mp3/0112.mp3|OK, ich habe die Karte gelöscht. Du kannst jetzt die Karte von der Box nehmen.
mp3/0113.mp3|Vorgang abgebrochen.
mp3/0114.mp3|Beim konfigurieren der Karte ist ein Fehler aufgetreten. Bitte versuche es noch einmal.
mp3/0115.mp3|Beim löschen der Karte ist ein Fehler aufgetreten. Bitte versuche es noch einmal.

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#!/bin/sh
mkdir mp3
awk -F'|' '{system("say -v Anna -o outfile.aiff " $2 " && ffmpeg -y -i outfile.aiff -acodec libmp3lame -ab 128k -ac 1 " $1 " && rm outfile.aiff")}' < audio_messages.txt

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/* -----------------------------------------------------------------------------------------
MFRC522 Arduino Arduino Arduino Arduino Arduino
Reader/PCD Uno/101 Mega Nano v3 Leonardo/Micro Pro Micro
Signal Pin Pin Pin Pin Pin Pin
-----------------------------------------------------------------------------------------
RST/Reset RST 9 5 D9 RESET/ICSP-5 RST
SPI SS SDA(SS) 10 53 D10 10 10
SPI MOSI MOSI 11 / ICSP-4 51 D11 ICSP-4 16
SPI MISO MISO 12 / ICSP-1 50 D12 ICSP-1 14
SPI SCK SCK 13 / ICSP-3 52 D13 ICSP-3 15
button assignments:
-------------------
Button B1 (pin A0): play+pause (middle button)
Button B2 (pin A1): volume up (right button)
Button B3 (pin A2): volume down (left button)
button actions:
---------------
Hold B2 or B3 for 2 seconds during playback in album mode: Skip to the next/previous track
Hold B3 for 2 seconds during playback in party mode: Skip to the next track
Hold both B2 and B3 for 2 seconds during idle: Enter erase nfc tag mode
Hold both B2 and B3 for 2 seconds during erase nfc tag mode: Cancel erase nfc tag mode
Hold both B2 and B3 for 2 seconds during nfc tag setup mode: Cancel nfc tag setup mode
ir remote:
----------
If a TSOP38238 is connected to pin 5, you can also use an ir remote to remote
control the jukebox. There are code mappings for the silver apple remote below, but you can
change them to other codes to match different remotes. This feature can be disabled by
commenting a define below, to save some memory. The actions are as follows:
During playback:
play+pause / center - toggle playback
up / down - volume up / down
left / right - previous / next track during album mode, next track during party mode
During idle:
menu - enter erase nfc tag mode
During erase nfc tag mode:
menu - cancel
During nfc tag setup mode:
play+pause / center - confirm
up / right - next option
down / left - previous option
menu - cancel
status led:
-----------
If a led is connected to pin 6, limited status information is given using that led.
The led is solid on when the jukebox is running (ie. has power and got initialized). The
led is pulsing slowly to indicate playback. When the box is in setup new nfc tag or erase
nfc tag mode, the led is blinking every 500ms. This feature can be disabled by commenting
a define below, to save some memory.
non standard libraries used in this sketch:
-------------------------------------------
MFRC522.h - https://github.com/miguelbalboa/rfid
DFMiniMp3.h - https://github.com/Makuna/DFMiniMp3
Bounce2.h - https://github.com/thomasfredericks/Bounce2
IRremote.h - https://github.com/z3t0/Arduino-IRremote
*/
// comment below line to disable ir remote support, saves about 5.8 KiB of program memory
#define TSOP38238
// comment below line to disable status led support, saves about 530 Byte of program memory
#define STATUSLED
// include required libraries
#include <SoftwareSerial.h>
#include <SPI.h>
#include <MFRC522.h>
#include <DFMiniMp3.h>
#include <Bounce2.h>
#if defined(TSOP38238)
#include <IRremote.h>
#endif
// define global constants
const uint8_t softwareSerialTxPin = 2; // software serial tx, wired with 1k ohm to rx pin of DFPlayer Mini
const uint8_t softwareSerialRxPin = 3; // software serial rx, wired straight to tx pin of DFPlayer Mini
const uint8_t mp3BusyPin = 4; // reports play state of DFPlayer Mini, low = playing
const uint8_t irReceiverPin = 5; // pin used for the ir receiver
const uint8_t statusLedPin = 6; // pin used for status led
const uint8_t nfcResetPin = 9; // used for spi communication to nfc module
const uint8_t nfcSlaveSelectPin = 10; // used for spi communication to nfc module
const uint8_t rngSeedPin = A5; // used to seed the random number generator, should be unconnected
const uint8_t buPins[] = { A0, A1, A2 }; // pins used for the buttons
const uint8_t buCount = sizeof(buPins); // number of buttons
const uint8_t mp3StartVolume = 10; // initial volume of DFPlayer Mini
const uint8_t mp3MaxVolume = 25; // maximal volume of DFPlayer Mini
const uint16_t buHoldTime = 2000; // button hold time, 2 seconds
const uint32_t debugConsoleSpeed = 115200; // speed for the debug console
// define message to mp3 file mappings for spoken feedback
const uint8_t msgWelcome = 100; // 01
const uint8_t msgSetupNewTag = 101; // 02
const uint8_t msgSetupNewTagFolderAssigned = 102; // 03
const uint8_t msgSetupNewTagStoryMode = 103; // 04
const uint8_t msgSetupNewTagAlbumMode = 104; // 05
const uint8_t msgSetupNewTagPartyMode = 105; // 06
const uint8_t msgSetupNewTagConfirm = 110; // 07
const uint8_t msgSetupNewTagError = 114; // 08
const uint8_t msgEraseTag = 111; // 09
const uint8_t msgEraseTagConfirm = 112; // 10
const uint8_t msgEraseTagError = 115; // 11
const uint8_t msgCancel = 113; // 12
const uint8_t msgCount = 12; // used to calculate the total ammount of tracks on the sd card
// define code mappings for silver apple tv 2 ir remote
const uint16_t ir1ButtonUp = 0x5057;
const uint16_t ir1ButtonDown = 0x3057;
const uint16_t ir1ButtonLeft = 0x9057;
const uint16_t ir1ButtonRight = 0x6057;
const uint16_t ir1ButtonCenter = 0x3A57;
const uint16_t ir1ButtonMenu = 0xC057;
const uint16_t ir1ButtonPlayPause = 0xFA57;
// define code mappings for silver apple tv 3 ir remote
const uint16_t ir2ButtonUp = 0x50BF;
const uint16_t ir2ButtonDown = 0x30BF;
const uint16_t ir2ButtonLeft = 0x90BF;
const uint16_t ir2ButtonRight = 0x60BF;
const uint16_t ir2ButtonCenter = 0x3ABF;
const uint16_t ir2ButtonMenu = 0xC0BF;
const uint16_t ir2ButtonPlayPause = 0xFABF;
// button states
enum { UNCHANGED, PUSH, RELEASE }; // button states: UNCHANGED = 0, PUSH = 1, RELEASE = 2
// button actions
enum { NOACTION, // NOACTION, 0
B1P, B2P, B3P, // single button pushes, 1 -> buCount
B1H, B2H, B3H, // single button holds, buCount + 1 -> 2 * buCount
B23H, // multi button holds and
IRU, IRD, IRL, IRR, IRC, IRM, IRP // ir remote events, 2 * buCount + 1 -> END
};
// this object stores nfc tag data
struct nfcTagObject {
uint8_t returnCode;
uint32_t cookie;
uint8_t version;
uint8_t assignedFolder;
uint8_t playbackMode;
} nfcTag;
// define global variables
uint8_t playTrack = 1;
uint16_t totalTrackCount = 0;
uint16_t folderTrackCount = 0;
bool initNfcTagPlayback = false;
// ############################################################ no variable definitions below this line ############################################################
// this function needs to be declared here for the first time because it's called in class Mp3Notify
// the function itself is down below
void playNextTrack(uint16_t globalTrack, bool directionForward, bool isInteractive);
// used by DFPlayer Mini library during callbacks
class Mp3Notify {
public:
static void OnError(uint16_t returnValue) {
Serial.print(F("mp3 | error code "));
Serial.println(returnValue);
}
static void OnPlayFinished(uint16_t returnValue) {
playNextTrack(returnValue, true, false);
}
static void OnCardOnline(uint16_t returnValue) {
Serial.println(F("mp3 | sd card online "));
}
static void OnCardInserted(uint16_t returnValue) {
Serial.println(F("mp3 | sd card inserted "));
}
static void OnCardRemoved(uint16_t returnValue) {
Serial.println(F("mp3 | sd card removed "));
}
};
Bounce bounce[buCount]; // create Bounce instances
MFRC522 mfrc522(nfcSlaveSelectPin, nfcResetPin); // create MFRC522 instance
SoftwareSerial secondarySerial(softwareSerialRxPin, softwareSerialTxPin); // create SoftwareSerial instance
DFMiniMp3<SoftwareSerial, Mp3Notify> mp3(secondarySerial); // create DFMiniMp3 instance
#if defined(TSOP38238)
IRrecv irReceiver(irReceiverPin); // create IRrecv instance
decode_results irReadings; // create decode_results instance to store received ir readings
#endif
// checks for input from buttons and ir remote, debounces buttons and then returns an event
// button code is based on ideas from http://forum.arduino.cc/index.php?topic=296409.0
uint8_t checkInput() {
static bool buDoEvent = false; // was there an event for a single button? yes/no
static bool buBlockEvent = false; // block subsequent events? yes/no
static uint8_t buEventCount = 0; // track how many buttons are being pushed simultaniously
static uint8_t buEvent = NOACTION; // event to be executed
static uint32_t buEventTime = 0; // time when a button was pushed
// if no button is pushed, reset
if (!buEventCount) {
buDoEvent = false;
buBlockEvent = false;
buEventCount = 0;
}
buEvent = NOACTION;
// cycle through all buttons
for (uint8_t i = 0; i < buCount; i++) {
bounce[i].update();
// button was pushed
if (bounce[i].fell()) {
if (buEventCount < buCount) buEventCount++;
buEventTime = millis();
if (!buDoEvent) {
buDoEvent = true;
buEvent = i + 1;
}
}
// button was released
else if (bounce[i].rose()) {
if (buEventCount) buEventCount--;
buBlockEvent = true;
}
// button hold events
if (!buBlockEvent) {
if (millis() - buEventTime >= buHoldTime) {
// single button hold events
if (!bounce[i].read() && buEventCount == 1) {
buEvent = i + buCount + 1;
buBlockEvent = true;
}
// multi button hold events
if (!bounce[1].read() && !bounce[2].read() && buEventCount == 2) {
buEvent = B23H;
buBlockEvent = true;
}
}
}
}
#if defined(TSOP38238)
// poll ir receiver, has precedence over physical buttons
if (irReceiver.decode(&irReadings)) {
switch (irReadings.value & 0xFFFF) {
// button up
case ir1ButtonUp:
case ir2ButtonUp:
buEvent = IRU;
break;
// button down
case ir1ButtonDown:
case ir2ButtonDown:
buEvent = IRD;
break;
// button left
case ir1ButtonLeft:
case ir2ButtonLeft:
buEvent = IRL;
break;
// button right
case ir1ButtonRight:
case ir2ButtonRight:
buEvent = IRR;
break;
// button center
case ir1ButtonCenter:
case ir2ButtonCenter:
buEvent = IRC;
break;
// button menu
case ir1ButtonMenu:
case ir2ButtonMenu:
buEvent = IRM;
break;
// button play+pause
case ir1ButtonPlayPause:
case ir2ButtonPlayPause:
buEvent = IRP;
break;
default:
break;
}
irReceiver.resume();
}
#endif
return buEvent;
}
// plays next track depending on current playback mode
void playNextTrack(uint16_t globalTrack, bool directionForward, bool isInteractive) {
static uint16_t lastCallTrack = 0;
//delay 100ms to be on the safe side with the serial communication
delay(100);
// we don't advance to a new track on interactive voice feedback (ie. during configuration of a new nfc tag)
if (!initNfcTagPlayback) return;
// story mode: play one random track in folder
// there is no next track in story mode -> stop playback
if (nfcTag.playbackMode == 1) {
Serial.println(F("mp3 | story mode -> stop"));
mp3.stop();
}
// album mode: play complete folder
// advance to the next track, stop if the end of the folder is reached or go back to the previous track
if (nfcTag.playbackMode == 2) {
// **workaround for some DFPlayer mini modules that make two callbacks in a row when finishing a track**
// check if we get called with the same track number twice in a row, if yes return immediately
if (lastCallTrack == globalTrack) return;
else lastCallTrack = globalTrack;
// play next track?
if (directionForward) {
// there are more tracks after the current one, play next track
if (playTrack < folderTrackCount) {
playTrack++;
Serial.print(F("mp3 | album mode -> folder "));
Serial.print(nfcTag.assignedFolder);
Serial.print(F(" -> track "));
Serial.print(playTrack);
Serial.print(F(" of "));
Serial.println(folderTrackCount);
mp3.playFolderTrack(nfcTag.assignedFolder, playTrack);
}
// there are no more tracks after the current one
else {
// user wants to manually play the next track, ignore the next track command
if (isInteractive) Serial.println(F("mp3 | album mode -> end of folder -> ignore next track"));
// stop playback
else {
Serial.println(F("mp3 | album mode -> end of folder -> stop"));
mp3.stop();
}
}
}
// play previous track?
else {
// there are more tracks before the current one, play the previous track
if (playTrack > 1) {
playTrack--;
Serial.print(F("mp3 | album mode -> folder "));
Serial.print(nfcTag.assignedFolder);
Serial.print(F(" -> track "));
Serial.print(playTrack);
Serial.print(F(" of "));
Serial.println(folderTrackCount);
mp3.playFolderTrack(nfcTag.assignedFolder, playTrack);
}
// there are no more tracks before the current one, ignore the previous track command
else Serial.println(F("mp3 | album mode -> beginning of folder -> ignore previous track"));
}
}
// party mode: shuffle tracks in folder indefinitely
// just play another random track
if (nfcTag.playbackMode == 3) {
playTrack = random(1, folderTrackCount + 1);
Serial.print(F("mp3 | party mode -> folder "));
Serial.print(nfcTag.assignedFolder);
Serial.print(F(" -> track "));
Serial.print(playTrack);
Serial.print(F(" of "));
Serial.println(folderTrackCount);
mp3.playFolderTrack(nfcTag.assignedFolder, playTrack);
}
}
// reads data from nfc tag
nfcTagObject readNfcTagData() {
nfcTagObject nfcTag;
uint8_t mifareBlock = 4;
uint8_t mifareData[18];
uint8_t mifareDataSize = sizeof(mifareData);
MFRC522::StatusCode mifareStatus;
MFRC522::MIFARE_Key mifareKey;
MFRC522::PICC_Type mifareType;
for (uint8_t i = 0; i < 6; i++) mifareKey.keyByte[i] = 0xFF;
nfcTag.returnCode = 0;
nfcTag.cookie = 0;
nfcTag.version = 0;
nfcTag.assignedFolder = 0;
nfcTag.playbackMode = 0;
// check if card type is supported
mifareType = mfrc522.PICC_GetType(mfrc522.uid.sak);
if (mifareType != MFRC522::PICC_TYPE_MIFARE_MINI && mifareType != MFRC522::PICC_TYPE_MIFARE_1K && mifareType != MFRC522::PICC_TYPE_MIFARE_4K) {
mfrc522.PICC_HaltA();
mfrc522.PCD_StopCrypto1();
nfcTag.returnCode = 255;
return nfcTag;
}
else {
// check if we can authenticate with mifareKey
mifareStatus = (MFRC522::StatusCode) mfrc522.PCD_Authenticate(MFRC522::PICC_CMD_MF_AUTH_KEY_A, mifareBlock, &mifareKey, &(mfrc522.uid));
if (mifareStatus != MFRC522::STATUS_OK) {
mfrc522.PICC_HaltA();
mfrc522.PCD_StopCrypto1();
nfcTag.returnCode = 254;
return nfcTag;
}
else {
// read data from nfc tag
mifareStatus = (MFRC522::StatusCode) mfrc522.MIFARE_Read(mifareBlock, mifareData, &mifareDataSize);
if (mifareStatus != MFRC522::STATUS_OK) {
mfrc522.PICC_HaltA();
mfrc522.PCD_StopCrypto1();
nfcTag.returnCode = 253;
return nfcTag;
}
else {
// convert 4 byte cookie to 32bit decimal for easier handling
uint32_t tempCookie;
tempCookie = (uint32_t) mifareData[0] << 24;
tempCookie += (uint32_t) mifareData[1] << 16;
tempCookie += (uint32_t) mifareData[2] << 8;
tempCookie += (uint32_t) mifareData[3];
// if cookie is not blank return data
if (tempCookie != 0) {
mfrc522.PICC_HaltA();
mfrc522.PCD_StopCrypto1();
nfcTag.returnCode = 1;
nfcTag.cookie = tempCookie;
nfcTag.version = mifareData[4];
nfcTag.assignedFolder = mifareData[5];
nfcTag.playbackMode = mifareData[6];
return nfcTag;
}
else {
nfcTag.returnCode = 1;
nfcTag.cookie = 0;
return nfcTag;
}
}
}
}
}
// writes data to nfc tag
uint8_t writeNfcTagData(uint8_t mifareData[], uint8_t mifareDataSize) {
uint8_t returnCode;
uint8_t mifareBlock = 4;
uint8_t mifareTrailerBlock = 7;
MFRC522::StatusCode mifareStatus;
MFRC522::MIFARE_Key mifareKey;
MFRC522::PICC_Type mifareType;
for (uint8_t i = 0; i < 6; i++) mifareKey.keyByte[i] = 0xFF;
// check if card type is supported
mifareType = mfrc522.PICC_GetType(mfrc522.uid.sak);
if (mifareType != MFRC522::PICC_TYPE_MIFARE_MINI && mifareType != MFRC522::PICC_TYPE_MIFARE_1K && mifareType != MFRC522::PICC_TYPE_MIFARE_4K) nfcTag.returnCode = 255;
else {
// check if we can authenticate with mifareKey
mifareStatus = (MFRC522::StatusCode) mfrc522.PCD_Authenticate(MFRC522::PICC_CMD_MF_AUTH_KEY_A, mifareTrailerBlock, &mifareKey, &(mfrc522.uid));
if (mifareStatus != MFRC522::STATUS_OK) returnCode = 254;
else {
// write data to nfc tag
mifareStatus = (MFRC522::StatusCode) mfrc522.MIFARE_Write(mifareBlock, mifareData, mifareDataSize);
if (mifareStatus != MFRC522::STATUS_OK) returnCode = 253;
else returnCode = 1;
}
}
mfrc522.PICC_HaltA();
mfrc522.PCD_StopCrypto1();
return returnCode;
}
#if defined(STATUSLED)
// fade in/out status led during playback, on idle set to full brightness
void fadeStatusLed(bool isPlaying) {
static bool statusLedDirection;
static int16_t statusLedValue = 255;
static uint32_t statusLedOldMillis;
// jukebox is playing, fade status led in or out
if (isPlaying) {
uint32_t statusLedNewMillis = millis();
if (statusLedNewMillis - statusLedOldMillis >= 100) {
statusLedOldMillis = statusLedNewMillis;
if (statusLedDirection) {
statusLedValue = statusLedValue + 10;
if (statusLedValue >= 255) {
statusLedValue = 255;
statusLedDirection = !statusLedDirection;
}
}
else {
statusLedValue = statusLedValue - 10;
if (statusLedValue <= 0) {
statusLedValue = 0;
statusLedDirection = !statusLedDirection;
}
}
analogWrite(statusLedPin, statusLedValue);
}
}
// jukebox is not playing, set to full brightness
else {
statusLedValue = 255;
analogWrite(statusLedPin, statusLedValue);
}
}
// blink status led every 500ms during setup new nfc tag and erase nfc tag
void blinkStatusLed() {
static bool statusLedState;
static uint32_t statusLedOldMillis;
uint32_t statusLedNewMillis = millis();
if (statusLedNewMillis - statusLedOldMillis >= 500) {
statusLedOldMillis = statusLedNewMillis;
statusLedState = !statusLedState;
digitalWrite(statusLedPin, statusLedState);
}
}
#endif
void setup()
{
Serial.begin(debugConsoleSpeed);
while (!Serial);
Serial.println(F("sys | DIY NFC JUKEBOX"));
Serial.println(F("sys | BY THORSTEN VOß"));
Serial.println(F("---------------------"));
Serial.println(F("sys | initializing nfc module"));
SPI.begin();
mfrc522.PCD_Init();
Serial.println(F("sys | initializing mp3 module"));
mp3.begin();
delay(2000);
Serial.print(F("sys | volume: "));
Serial.println(mp3StartVolume);
mp3.setVolume(mp3StartVolume);
Serial.print(F("sys | tracks: "));
totalTrackCount = mp3.getTotalTrackCount() - msgCount;
Serial.println(totalTrackCount);
pinMode(mp3BusyPin, INPUT);
Serial.println(F("sys | initializing buttons"));
for (uint8_t i = 0; i < buCount; i++) {
pinMode(buPins[i], INPUT_PULLUP);
bounce[i].attach(buPins[i]);
bounce[i].interval(10);
}
Serial.println(F("sys | initializing rng"));
randomSeed(analogRead(rngSeedPin));
#if defined(TSOP38238)
Serial.println(F("sys | initializing ir receiver"));
irReceiver.enableIRIn();
#endif
#if defined(STATUSLED)
Serial.println(F("sys | initializing status led"));
pinMode(statusLedPin, OUTPUT);
digitalWrite(statusLedPin, HIGH);
#endif
Serial.println(F("sys | system is ready"));
mp3.playMp3FolderTrack(msgWelcome);
}
void loop()
{
uint8_t inputEvent = checkInput();
bool isPlaying = !digitalRead(mp3BusyPin);
// ######################################################
// # main code block, if nfc tag is detected do something
if (mfrc522.PICC_IsNewCardPresent() && mfrc522.PICC_ReadCardSerial()) {
Serial.println(F("nfc | tag detected"));
nfcTag = readNfcTagData();
// ##############################
// # nfc tag is successfully read
if (nfcTag.returnCode == 1) {
Serial.println(F("nfc | successfully read tag"));
// #######################################################################################################
// # nfc tag has our magic cookie 0x1337 0xb347 on it (322417479), use data from nfc tag to start playback
if (nfcTag.cookie == 322417479) {
// print read data to console
Serial.println(F("nfc | tag is one of ours"));
Serial.print(F("nfc | folder: "));
Serial.println(nfcTag.assignedFolder);
Serial.print(F("nfc | mode: "));
switch (nfcTag.playbackMode) {
case 1:
Serial.println(F("story mode"));
break;
case 2:
Serial.println(F("album mode"));
break;
case 3:
Serial.println(F("party mode"));
break;
default:
break;
}
// start playback
Serial.println(F("sys | starting playback"));
folderTrackCount = mp3.getFolderTrackCount(nfcTag.assignedFolder);
switch (nfcTag.playbackMode) {
// story mode
case 1:
playTrack = random(1, folderTrackCount + 1);
Serial.print(F("mp3 | story mode -> randomly play one of "));
Serial.print(folderTrackCount);
Serial.print(F(" tracks in folder "));
Serial.println(nfcTag.assignedFolder);
Serial.print(F("mp3 | story mode -> folder "));
Serial.print(nfcTag.assignedFolder);
Serial.print(F(" -> track "));
Serial.print(playTrack);
Serial.print(F(" of "));
Serial.println(folderTrackCount);
break;
// album mode
case 2:
playTrack = 1;
Serial.print(F("mp3 | album mode -> sequentially play all "));
Serial.print(folderTrackCount);
Serial.print(F(" tracks in folder "));
Serial.println(nfcTag.assignedFolder);
Serial.print(F("mp3 | album mode -> folder "));
Serial.print(nfcTag.assignedFolder);
Serial.print(F(" -> track "));
Serial.print(playTrack);
Serial.print(F(" of "));
Serial.println(folderTrackCount);
break;
// party mode
case 3:
playTrack = random(1, folderTrackCount + 1);
Serial.print(F("mp3 | party mode -> shuffle all "));
Serial.print(folderTrackCount);
Serial.print(F(" tracks in folder "));
Serial.println(nfcTag.assignedFolder);
Serial.print(F("mp3 | party mode -> folder "));
Serial.print(nfcTag.assignedFolder);
Serial.print(F(" -> track "));
Serial.print(playTrack);
Serial.print(F(" of "));
Serial.println(folderTrackCount);
break;
default:
break;
}
initNfcTagPlayback = true;
mp3.playFolderTrack(nfcTag.assignedFolder, playTrack);
}
// # end - nfc tag has our magic cookie 0x1337 0xb347 on it (322417479)
// ####################################################################
// #######################################################################################################
// # nfc tag does not have our magic cookie 0x1337 0xb347 on it (0), start setup to configure this nfc tag
else if (nfcTag.cookie == 0) {
Serial.println(F("nfc | tag is blank"));
Serial.println(F("sys | starting tag setup"));
// let user pick the folder to assign
initNfcTagPlayback = false;
bool setAssignedFolder = false;
Serial.println(F("sys | pick folder"));
mp3.playMp3FolderTrack(msgSetupNewTag);
// loop until folder is assigned
do {
uint8_t inputEvent = checkInput();
// button 1 (middle) single push or ir remote play+pause / center: confirm selected folder
if (inputEvent == B1P || inputEvent == IRP || inputEvent == IRC) {
if (nfcTag.assignedFolder == 0) {
Serial.println(F("sys | no folder selected"));
continue;
}
else setAssignedFolder = true;
}
// button 2 (right) single push or ir remote up / right: next folder
else if (inputEvent == B2P || inputEvent == IRU || inputEvent == IRR) {
nfcTag.assignedFolder = min(nfcTag.assignedFolder + 1, 99);
Serial.print(F("sys | folder "));
Serial.println(nfcTag.assignedFolder);
mp3.playFolderTrack(nfcTag.assignedFolder, 1);
}
// button 3 (left) single push or ir remote down / left: previous folder
else if (inputEvent == B3P || inputEvent == IRD || inputEvent == IRL) {
nfcTag.assignedFolder = max(nfcTag.assignedFolder - 1, 1);
Serial.print(F("sys | folder "));
Serial.println(nfcTag.assignedFolder);
mp3.playFolderTrack(nfcTag.assignedFolder, 1);
}
// button 2 (right) & button 3 (left) multi hold for 2 sec or ir remote menu: cancel tag setup
else if (inputEvent == B23H || inputEvent == IRM) {
Serial.println(F("sys | tag setup canceled"));
nfcTag.assignedFolder = 0;
mfrc522.PICC_HaltA();
mfrc522.PCD_StopCrypto1();
mp3.playMp3FolderTrack(msgCancel);
return;
}
#if defined(STATUSLED)
// blink status led
blinkStatusLed();
#endif
mp3.loop();
}
while (!setAssignedFolder);
delay(500);
Serial.print(F("sys | folder "));
Serial.print(nfcTag.assignedFolder);
Serial.println(F(" selected"));
// let user pick playback mode
initNfcTagPlayback = false;
bool setPlaybackMode = false;
Serial.println(F("sys | pick playback mode"));
mp3.playMp3FolderTrack(msgSetupNewTagFolderAssigned);
// loop until playback mode is set
do {
uint8_t inputEvent = checkInput();
// button 1 (middle) single push or ir remote play+pause / center: confirm selected playback mode
if (inputEvent == B1P || inputEvent == IRP || inputEvent == IRC) {
if (nfcTag.playbackMode == 0) {
Serial.println(F("sys | no playback mode selected"));
continue;
}
else setPlaybackMode = true;
}
// button 2 (right) single push or ir remote up / right: next playback mode
else if (inputEvent == B2P || inputEvent == IRU || inputEvent == IRR) {
nfcTag.playbackMode = min(nfcTag.playbackMode + 1, 3);
Serial.print(F("sys | "));
switch (nfcTag.playbackMode) {
case 1:
Serial.println(F("story mode"));
mp3.playMp3FolderTrack(msgSetupNewTagStoryMode);
break;
case 2:
Serial.println(F("album mode"));
mp3.playMp3FolderTrack(msgSetupNewTagAlbumMode);
break;
case 3:
Serial.println(F("party mode"));
mp3.playMp3FolderTrack(msgSetupNewTagPartyMode);
break;
default:
break;
}
}
// button 3 (left) single push or ir remote down / left: previous playback mode
else if (inputEvent == B3P || inputEvent == IRD || inputEvent == IRL) {
nfcTag.playbackMode = max(nfcTag.playbackMode - 1, 1);
Serial.print(F("sys | "));
switch (nfcTag.playbackMode) {
case 1:
Serial.println(F("story mode"));
mp3.playMp3FolderTrack(msgSetupNewTagStoryMode);
break;
case 2:
Serial.println(F("album mode"));
mp3.playMp3FolderTrack(msgSetupNewTagAlbumMode);
break;
case 3:
Serial.println(F("party mode"));
mp3.playMp3FolderTrack(msgSetupNewTagPartyMode);
break;
default:
break;
}
}
// button 2 (right) & button 3 (left) multi hold for 2 sec or ir remote menu: cancel tag setup
else if (inputEvent == B23H || inputEvent == IRM) {
Serial.println(F("sys | tag setup canceled"));
nfcTag.playbackMode = 0;
mfrc522.PICC_HaltA();
mfrc522.PCD_StopCrypto1();
mp3.playMp3FolderTrack(msgCancel);
return;
}
#if defined(STATUSLED)
// blink status led
blinkStatusLed();
#endif
mp3.loop();
}
while (!setPlaybackMode);
delay(500);
Serial.print(F("sys | "));
switch (nfcTag.playbackMode) {
case 1:
Serial.print(F("story mode"));
break;
case 2:
Serial.print(F("album mode"));
break;
case 3:
Serial.print(F("party mode"));
break;
default:
break;
}
Serial.println(F(" selected"));
// save data to tag
Serial.println(F("sys | attempting to save data to tag"));
uint8_t bytesToWrite[] = { 0x13, 0x37, 0xb3, 0x47, // 0x1337 0xb347 magic cookie to identify our nfc tags
0x01, // version 1
nfcTag.assignedFolder, // the folder picked by the user
nfcTag.playbackMode, // the playback mode picked by the user
0x00, // reserved for future use
0x00, 0x00, 0x00, 0x00, // reserved for future use
0x00, 0x00, 0x00, 0x00 // reserved for future use
};
uint8_t writeNfcTagStatus = writeNfcTagData(bytesToWrite, sizeof(bytesToWrite));
// handle return codes from events that happened during writing to the nfc tag
switch (writeNfcTagStatus) {
case 1:
Serial.println(F("sys | saving data to tag successfull"));
mp3.playMp3FolderTrack(msgSetupNewTagConfirm);
break;
case 253:
Serial.println(F("nfc | write error"));
mp3.playMp3FolderTrack(msgSetupNewTagError);
break;
case 254:
Serial.println(F("nfc | authentication failed"));
mp3.playMp3FolderTrack(msgSetupNewTagError);
break;
case 255:
Serial.println(F("nfc | tag is not supported"));
mp3.playMp3FolderTrack(msgSetupNewTagError);
break;
default:
Serial.println(F("nfc | unknown error"));
mp3.playMp3FolderTrack(msgSetupNewTagError);
break;
}
}
// # end - nfc tag does not have our magic cookie 0x1337 0xb347 on it (0)
// ######################################################################
// nfc tag is unknown but not not blank, ignore
else Serial.println(F("nfc | tag is not one of ours"));
}
// # end - nfc tag is successfully read
// ####################################
// handle errors that happened during reading from the nfc tag
else if (nfcTag.returnCode == 253) Serial.println(F("nfc | read error"));
else if (nfcTag.returnCode == 254) Serial.println(F("nfc | authentication failed"));
else if (nfcTag.returnCode == 255) Serial.println(F("nfc | tag is not supported"));
else Serial.println(F("nfc | unknown error"));
}
// # end - main code block
// #######################
// ##################################################################################
// # handle button and ir remote events during playback or while waiting for nfc tags
// button 1 (middle) single push or ir remote play+pause / center: toggle playback
if (inputEvent == B1P || inputEvent == IRP || inputEvent == IRC) {
if (isPlaying) {
Serial.println(F("sys | pause"));
mp3.pause();
}
else {
Serial.println(F("sys | play"));
mp3.start();
}
}
// button 2 (right) single push or ir remote up: increase volume
else if ((inputEvent == B2P || inputEvent == IRU) && isPlaying) {
uint8_t mp3CurrentVolume = mp3.getVolume();
if (mp3CurrentVolume < mp3MaxVolume) {
Serial.print(F("sys | increase volume to "));
Serial.println(mp3CurrentVolume + 1);
mp3.increaseVolume();
}
else {
Serial.print(F("sys | maximum vomlume is "));
Serial.println(mp3MaxVolume);
}
}
// button 3 (left) single push or ir remote down: decrease volume
else if ((inputEvent == B3P || inputEvent == IRD) && isPlaying) {
uint8_t mp3CurrentVolume = mp3.getVolume();
if (mp3CurrentVolume > 0) {
if (mp3CurrentVolume == 1) Serial.println(F("sys | mute"));
else {
Serial.print(F("sys | decrease volume to "));
Serial.println(mp3CurrentVolume - 1);
}
mp3.decreaseVolume();
}
else Serial.println(F("sys | mute"));
}
// button 2 (right) single hold or ir remote right, only during album and party mode while playing: next track
else if ((inputEvent == B2H || inputEvent == IRR) && (nfcTag.playbackMode == 2 || nfcTag.playbackMode == 3) && isPlaying) {
Serial.println(F("sys | next track"));
// bloody hack: decrease volume 1 step because it got increased before due to single button push action
if (inputEvent == B2H) mp3.decreaseVolume();
playNextTrack(random(65536), true, true);
}
// button 3 (left) single hold or ir remote left, only during album mode while playing: previous track
else if ((inputEvent == B3H || inputEvent == IRL) && nfcTag.playbackMode == 2 && isPlaying) {
Serial.println(F("sys | previous track"));
// bloody hack: increase volume 1 step because it got decreased before due to single button push action
if (inputEvent == B3H) mp3.increaseVolume();
playNextTrack(random(65536), false, true);
}
// button 2 (right) & button 3 (left) multi hold for 2 sec or ir remote menu, only while not playing: erase nfc tag
else if ((inputEvent == B23H || inputEvent == IRM) && !isPlaying) {
initNfcTagPlayback = false;
uint8_t writeNfcTagStatus = 0;
Serial.println(F("sys | waiting for tag to erase"));
mp3.playMp3FolderTrack(msgEraseTag);
do {
uint8_t inputEvent = checkInput();
// button 2 (right) & button 3 (left) multi hold for 2 sec or ir remote menu: cancel erase nfc tag
if (inputEvent == B23H || inputEvent == IRM) {
Serial.println(F("sys | erasing tag canceled"));
mp3.playMp3FolderTrack(msgCancel);
return;
}
// wait for nfc tag, erase once detected
if (mfrc522.PICC_IsNewCardPresent() && mfrc522.PICC_ReadCardSerial()) {
Serial.println(F("nfc | tag detected"));
Serial.println(F("nfc | erasing tag"));
uint8_t bytesToWrite[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
writeNfcTagStatus = writeNfcTagData(bytesToWrite, sizeof(bytesToWrite));
// handle return codes from events that happened during erasing the nfc tag
switch (writeNfcTagStatus) {
case 1:
Serial.println(F("nfc | tag erased"));
mp3.playMp3FolderTrack(msgEraseTagConfirm);
break;
case 253:
Serial.println(F("nfc | write error"));
mp3.playMp3FolderTrack(msgEraseTagError);
break;
case 254:
Serial.println(F("nfc | authentication failed"));
mp3.playMp3FolderTrack(msgEraseTagError);
break;
case 255:
Serial.println(F("nfc | tag is not supported"));
mp3.playMp3FolderTrack(msgEraseTagError);
break;
default:
Serial.println(F("nfc | unknown error"));
mp3.playMp3FolderTrack(msgEraseTagError);
break;
}
}
#if defined(STATUSLED)
// blink status led
blinkStatusLed();
#endif
mp3.loop();
}
while (!writeNfcTagStatus);
}
// # end - handle button or ir remote events during playback or while waiting for nfc tags
// #######################################################################################
#if defined(STATUSLED)
// fade status led
fadeStatusLed(isPlaying);
#endif
mp3.loop();
}