Hi,
I'm quite new at programming and during the last month I've been carrying a project which intends to create a device that helps blind people.
To do this I want an ultrasonic sensor (HR-SR04) to detect an object and when it does to play an information through the headset.
To do this I have programmed this:
// include SPI, MP3 and SD libraries
#include <SPI.h>
#include <Adafruit_VS1053.h>
#include <SD.h>
// 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
int trig = 5; // trig is the one that sends the wave
int echo = 2; // echo is the one that registers the time
int duration;
int distance;
Adafruit_VS1053_FilePlayer musicPlayer =
Adafruit_VS1053_FilePlayer(SHIELD_RESET, SHIELD_CS, SHIELD_DCS, DREQ, CARDCS);
void setup() {
Serial.begin(9600);
Serial.println("Start test");
//pinMode(trig, OUTPUT); // trig is an output has it sends a signal
//pinMode(echo, INPUT); // echo is an input has it recives information
//digitalWrite(trig, LOW);
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
}
// Set volume for left, right channels. lower numbers == louder volume!
musicPlayer.setVolume(20,20);
// 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
}
void loop() {
digitalWrite(trig, HIGH);
delayMicroseconds(10);
digitalWrite(trig, LOW);
// This code above sends a the "wave"
duration = pulseIn(echo, HIGH);
distance = duration * 0.034/2;
// This one determines the distance based on a simple calculus of how many cm travels the sound time each microsecond
Serial.print("distance: ");
Serial.println(distance);
delay(distance*5);
if(distance >= 100){
Serial.println(F("Playing track 002"));
musicPlayer.playFullFile("/track001.mp3");
}
}
However, the distance variable keeps giving me 0. Both programms the music one and the ultrasonic one are tested and work separate. But when I get them togheter it doesn't work. I would like to know why this is happening and how to solve it.
Thanks
I've accomplished to make it sound, don't really know why, but the code below works for me.
#include <NewPing.h>
#define TRIGGER_PIN A0
#define ECHO_PIN 9
#define MAX_DISTANCE 200
NewPing sonar(TRIGGER_PIN, ECHO_PIN, MAX_DISTANCE);
int distance;
int q = 1;
// include SPI, MP3 and SD libraries
#include <SPI.h>
#include <Adafruit_VS1053.h>
#include <SD.h>
// 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("prova relacio sensor cascs activa");
pinMode(ECHO_PIN,OUTPUT);
//delayMicroseconds(10);
digitalWrite(ECHO_PIN,LOW);
pinMode(ECHO_PIN,INPUT);
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
}
// 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
/*pinMode(ECHO_PIN,OUTPUT);
//delayMicroseconds(10);
digitalWrite(ECHO_PIN,LOW);
pinMode(ECHO_PIN,INPUT);*/
//musicPlayer.useInterrupt(VS1053_FILEPLAYER_PIN_INT)
musicPlayer.useInterrupt(VS1053_FILEPLAYER_TIMER0_INT); // DREQ int
}
void loop() {
Serial.println("Abans");
//musicPlayer.playFullFile("/track001.mp3"); //Aicò està en comenta perquè sinó direcatamnet no passa d'0aqui
Serial.println("Després");
//unsigned int uS = sonar.ping();
pinMode(ECHO_PIN,OUTPUT);
delayMicroseconds(10);
digitalWrite(ECHO_PIN,LOW);
pinMode(ECHO_PIN,INPUT);
unsigned int uS = sonar.ping();
distance = uS / US_ROUNDTRIP_CM;
Serial.print("Ping: ");
Serial.print(distance);
Serial.println("cm");
bool primercop = true;
if(distance >= 100){
Serial.println(F("Playing track 001"));
if(primercop){
musicPlayer.playFullFile("/track001.mp3");
primercop = false;
}
}
/*while(!music.stopped()){
}*/
int x = distance * 5;
delay(x);
}
