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Comment declencher un son via un lecteur KT403A avec un capteur de distance ultrason HC-SR04
/** * Code capteur ultrason <80cm declenche un son mp3 */ /* Constantes pour la communication avec le module KT403A */ const byte COMMAND_BYTE_START = 0x7E; const byte COMMAND_BYTE_VERSION = 0xFF; const byte COMMAND_BYTE_STOP = 0xEF; /* Constantes pour la commande setEqualizer() */ const byte EQUALIZER_NORMAL = 0x00; const byte EQUALIZER_POP = 0x01; const byte EQUALIZER_ROCK = 0x02; const byte EQUALIZER_JAZZ = 0x03; const byte EQUALIZER_CLASSIC = 0x04; const byte EQUALIZER_BASS = 0x05; /* Constantes pour la commande selectSourceDevice() */ const byte DEVICE_UDISK = 0x01; const byte DEVICE_SDCARD = 0x02; const byte DEVICE_AUX = 0x03; // Not used const byte DEVICE_PC = 0x04; // Debug only const byte DEVICE_FLASH = 0x05; const byte DEVICE_SLEEP = 0x06; /** Play the next song (all folders) WARNING: files are ordered by creation date! */ void playNextSong() { send_kt_command(0x01, 0, 0, 10); } /** Play the previous song (all folders) WARNING: files are ordered by creation date! */ void playPreviousSong() { send_kt_command(0x02, 0, 0, 10); } /** Play the given track number (0 ~ 2999) (all folders) WARNING: files are ordered by creation date! */ void playTrack(uint16_t track_number) { send_kt_command(0x03, highByte(track_number), lowByte(track_number), 10); } /** Increase the volume */ void volumeUp() { send_kt_command(0x04, 0, 0, 10); } /** Decrease the volume */ void volumeDown() { send_kt_command(0x05, 0, 0, 10); } /** Set the volume to the given level (0 ~ 30) */ void setVolume(byte volume) { if (volume > 30) volume = 30; send_kt_command(0x06, 0, volume, 10); } /** Set the equalizer to the given audio mode */ void setEqualizer(byte mode) { send_kt_command(0x07, 0, mode, 20); } /** Repeat a single track (0 ~ 2999) (all folders) WARNING: files are ordered by creation date! */ void repeatSingleTrack(uint16_t track_number) { send_kt_command(0x08, highByte(track_number), lowByte(track_number), 10); } /** Select the source device for playing */ void selectSourceDevice(byte device) { send_kt_command(0x09, 0, device, 200); } /** Enter standby / low power mode */ void enterStandbyMode() { send_kt_command(0x0A, 0, 0, 20); } /** Exit standby / low power mode */ void exitStandbyMode() { send_kt_command(0x0B, 0, 0, 20); } /** Reset the MP3 module */ void resetPlayer() { send_kt_command(0x0C, 0, 0, 100); } /** Play/resume the music */ void playResumeMusic() { send_kt_command(0x0D, 0, 0, 20); } /** Pause the music */ void pauseMusic() { send_kt_command(0x0E, 0, 0, 20); } /** Select the source folder and track for playing */ void selectSourceFolderAndTrack(byte folder_number, byte track_number) { send_kt_command(0x0F, folder_number, track_number, 10); } // 0x10 "Volume adjust set" - NOT SUPPORTED /** Enable or disable looping of all music files */ void loopAllMusic(byte enabled) { send_kt_command(0x11, 0, !!enabled, 10); } /** Select the source track from the "MP3" (case insensitive) folder */ void selectSourceTrackInMp3Directory(uint16_t track_number) { // Assert 0 ~ 9999 send_kt_command(0x12, highByte(track_number), lowByte(track_number), 10); } /** Pause the current track and insert an advertisement song from the "ADVERT" (case insensitive) folder */ void insertSongFromAdvertDirectory(uint16_t track_number) { // Assert 0 ~ 9999 send_kt_command(0x13, highByte(track_number), lowByte(track_number), 10); } /** Play the given song in the given directory (big directory version) */ void selectSourceBigFolderAndTrack(byte folder, uint16_t track_number) { // Assert folder 0 ~ 15, track number 0 ~ 9999 // 0b1100 011111001111 = 4bits folder, 12 bits track number send_kt_command(0x14, (folder << 4) | highByte(track_number) & 0x0f, lowByte(track_number), 10); } /** Stop playing the inserted advertisement song and resume playing the user track */ void stopInsertedSongAndResumePlaying() { send_kt_command(0x15, 0, 0, 20); } /** Stop the music */ void stopMusic() { send_kt_command(0x16, 0, 0, 20); } /** Loop all music in the given folder */ void loopFolder(byte folder_number) { send_kt_command(0x17, 0, folder_number, 10); } /** Random playing */ void shufflePlay() { send_kt_command(0x18, 0, 0, 20); } /** single repeat the currently playing track track */ void repeatCurrentTrack(byte enabled) { send_kt_command(0x19, 0, !enabled, 10); } /** Mute sound output **/ void muteSound(byte enabled) { send_kt_command(0x1A, 0, !!enabled, 10); } /** Fonction de bas niveau pour envoyer une commande au module KT403A */ void send_kt_command(byte command, byte data_h, byte data_l, unsigned long cmd_delay) { Serial.write(COMMAND_BYTE_START); Serial.write(COMMAND_BYTE_VERSION); Serial.write((byte) 0x06); Serial.write(command); Serial.write((byte) 0x00); Serial.write(data_h); Serial.write(data_l); Serial.write(COMMAND_BYTE_STOP); // 16-bits checksum is optionnal delay(cmd_delay); } // Ultrason /* Constantes pour les broches */ const byte TRIGGER_PIN = 2; // Broche TRIGGER const byte ECHO_PIN = 3; // Broche ECHO /* Constantes pour le timeout */ const unsigned long MEASURE_TIMEOUT = 25000UL; // 25ms = ~8m à 340m/s /* Vitesse du son dans l'air en mm/us */ const float SOUND_SPEED = 340.0 / 1000; /** Fonction setup() */ void setup() { /* Initialise le port série */ Serial.begin(9600); Serial.setTimeout(60000); /* Initialise le module KT403A */ resetPlayer(); selectSourceDevice(DEVICE_SDCARD); setVolume(15); /* Ultrason : Initialise les broches */ pinMode(TRIGGER_PIN, OUTPUT); digitalWrite(TRIGGER_PIN, LOW); // La broche TRIGGER doit être à LOW au repos pinMode(ECHO_PIN, INPUT); } /** Fonction loop() */ void loop() { /* 1. Lance une mesure de distance en envoyant une impulsion HIGH de 10µs sur la broche TRIGGER */ digitalWrite(TRIGGER_PIN, HIGH); delayMicroseconds(10); digitalWrite(TRIGGER_PIN, LOW); /* 2. Mesure le temps entre l'envoi de l'impulsion ultrasonique et son écho (si il existe) */ long measure = pulseIn(ECHO_PIN, HIGH, MEASURE_TIMEOUT); /* 3. Calcul la distance à partir du temps mesuré */ float distance_mm = measure / 2.0 * SOUND_SPEED; /* Affiche les résultats en mm, cm et m */ Serial.print(F("Distance: ")); Serial.print(distance_mm); Serial.print(F("mm (")); Serial.print(distance_mm / 10.0, 2); Serial.print(F("cm, ")); Serial.print(distance_mm / 1000.0, 2); Serial.println(F("m)")); // le programme en cm if (distance_mm /10 < 80){ playNextSong(); //break; delay(3000); Serial.println("touche");} /* Délai d'attente pour éviter d'afficher trop de résultats à la seconde */ delay(500); }