Audio stops playing after rtc is connected

Question

I am trying to play a song using arduino while at the same time display time using a rtc board using the tmrpcm library. However, if the rtc board is connected no sound is played.

I do understand that the tmrpcm may be interfering with the wire.h library but even commenting the same doesn't resolve the problem.

I am using the following code:

// Date and time functions using a DS1307 RTC connected via I2C and Wire lib
#include <RTClib.h>
#include<Wire.h>
#include <Arduino.h>
#include "SevenSegmentTM1637.h"
#include "SevenSegmentExtended.h"
#include "SevenSegmentFun.h"
#include "SD.h"
#define SD_ChipSelectPin 4
#include "TMRpcm.h"
#include "SPI.h"

TMRpcm tmrpcm;

const int ProxSensor=3;
int inputVal = 0;
#define CLK 8
#define DIO 7

// The amount of time (in milliseconds) between tests
#define TEST_DELAY   2000

SevenSegmentFun    display(CLK, DIO);

RTC_DS1307 rtc;

char daysOfTheWeek[7][12] = {"Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"};

void setup () {
  Serial.begin(9600);
  if(!SD.begin(SD_ChipSelectPin))
  {
    Serial.println("SD fail");
    return;
  }
  while (!Serial); // for Leonardo/Micro/Zero
  tmrpcm.speakerPin=9;
  Serial.begin(57600);
  if (! rtc.begin()) {
    Serial.println("Couldn't find RTC");
    while (1);
  }

  if (! rtc.isrunning()) {
    Serial.println("RTC is NOT running!");
    // following line sets the RTC to the date & time this sketch was compiled
    rtc.adjust(DateTime(2019, 10, 19, 01,41,00));
    // This line sets the RTC with an explicit date & time, for example to set
    // January 21, 2014 at 3am you would call:
    // rtc.adjust(DateTime(2014, 1, 21, 3, 0, 0));
  }
  pinMode(ProxSensor,INPUT);    //Pin 2 is connected to the output of proximity sensor
  display.begin();
}

void loop(){
  DateTime now = rtc.now();
  display.print((now.unixtime() / 86400L )-17963);
  Serial.print((now.unixtime() / 86400L )-17963);
  while(digitalRead(ProxSensor)==LOW)      //Check the sensor output
  {
    tmrpcm.setVolume(5);
    tmrpcm.play("test.wav");
      repeat:
    if(digitalRead(ProxSensor==LOW))
      goto repeat;
  }
}

Can anyone please help me?

Juraj · Answer 1 · 2019-10-26T18:10:51.033

2

The problem is

repeat:
if(digitalRead(ProxSensor==LOW))
  goto repeat;

ProxSensor==LOW is false so 0. you read the pin 0 and the outcome is random. The surrounding wiring can affect that. If digitalRead(0) is zero the wav starts playing immediately again. At least use

while (digitalRead(ProxSensor) == LOW);

edited Oct 26 '19 at 18:10

answered Oct 26 '19 at 14:47

Juraj

18,264
4
31
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Coder_fox · Accepted Answer · 2019-10-26T18:15:57.410

0

The TMRpcm and one of your other libraries might use the same timer on Uno which causes one of them to break. Either get a Arduino Mega which can run TMRpcm on TIMER3,4 or 5 or use libraries that don't require a timer.

edited Oct 26 '19 at 18:15

answered Oct 26 '19 at 13:54

Coder_fox

686
7
14

Audio stops playing after rtc is connected

2 Answers2