Using a Gyro and MP3 player using Wire.h and SoftwareSerial.h issues

Hello :slight_smile: my first post here.

I am trying a project using an MP3 board and a Gyro digital chip

Both sketches run fine on their own, but when I merge them together they seem to stop working altogether.

I also stop receiving serial comms to the PC monitor.

I believe I am having issues with the use of both softwareserial.h and wire.h

is this a known issue with a fix? I'm not sure what to search for.

Any help greatly received.

overall I'm hoping to play a mp3 using a CATALAX module triggered by a change from the MPU6050

Post both codes, and the mashed together code so we can see where the problem might be. Use code tags.

Well the Mp3 code is (sorry if I've not recognised any agreements by posting, i've lost track of the original sources.)

#include <SoftwareSerial.h>

 


#define ARDUINO_RX 2//should connect to TX of the Serial MP3 Player module
#define ARDUINO_TX 3//connect to RX of the module


SoftwareSerial mySerial(ARDUINO_RX, ARDUINO_TX); 

static int8_t Send_buf[8] = {0} ;  

#define CMD_PLAY_W_INDEX 0X03
#define CMD_SET_VOLUME 0X06
#define CMD_SEL_DEV 0X09
#define DEV_TF 0X02
#define CMD_PLAY 0X0D
#define CMD_PAUSE 0X0E
#define CMD_SINGLE_CYCLE 0X19
#define SINGLE_CYCLE_ON 0X00
#define SINGLE_CYCLE_OFF 0X01
#define CMD_PLAY_W_VOL 0X22


 void sendCommand(int8_t command, int16_t dat)
{
  delay(20);
  Send_buf[0] = 0x7e; //starting byte
  Send_buf[1] = 0xff; //version
  Send_buf[2] = 0x06; //the number of bytes of the command without starting byte and ending byte
  Send_buf[3] = command; //
  Send_buf[4] = 0x00;//0x00 = no feedback, 0x01 = feedback
  Send_buf[5] = (int8_t)(dat >> 8);//datah
  Send_buf[6] = (int8_t)(dat); //datal
  Send_buf[7] = 0xef; //ending byte
  for(uint8_t i=0; i<8; i++)//
  {
    mySerial.write(Send_buf[i]) ;
  }
}



void setup() {
  // put your setup code here, to run once:

  mySerial.begin(9600);
  delay(500);//Wait chip initialization is complete
    sendCommand(CMD_SEL_DEV, DEV_TF);//select the TF card  

    


}

void loop() {
 sendCommand(CMD_PLAY_W_VOL, 0X1001);
   delay(10000);

}

The Gyro code

// MPU-6050 Short Example Sketch
// By Arduino User JohnChi
// August 17, 2014
// Public Domain
#include<Wire.h>
const int MPU_addr=0x68;  // I2C address of the MPU-6050
int16_t AcX,AcY,AcZ,Tmp,GyX,GyY,GyZ;
int xcurrent; 
int ycurrent;
int zcurrent;
int xlast,ylast,zlast;
int xvary,yvary,zvary;
int threshold = 60;


int led1 = 13;
int led2 = 12;
int led3 = 11;

void setup(){

    pinMode(led1, OUTPUT);
        pinMode(led2, OUTPUT);
            pinMode(led3, OUTPUT);
  
  Wire.begin();
  Wire.beginTransmission(MPU_addr);
  Wire.write(0x6B);  // PWR_MGMT_1 register
  Wire.write(0);     // set to zero (wakes up the MPU-6050)
  Wire.endTransmission(true);
  Serial.begin(9600);

  Wire.beginTransmission(MPU_addr);
  Wire.write(0x3B);  // starting with register 0x3B (ACCEL_XOUT_H)
  Wire.endTransmission(false);
  Wire.requestFrom(MPU_addr,14,true);  // request a total of 14 registers 
  delay (250);
 GyX=Wire.read()<<8|Wire.read();  // 0x43 (GYRO_XOUT_H) & 0x44 (GYRO_XOUT_L)
  GyY=Wire.read()<<8|Wire.read();  // 0x45 (GYRO_YOUT_H) & 0x46 (GYRO_YOUT_L)
  GyZ=Wire.read()<<8|Wire.read();  // 0x47 (GYRO_ZOUT_H) & 0x48 (GYRO_ZOUT_L)
xlast = GyX;
ylast = GyY;
zlast = GyZ;

  
}
void loop(){
  Wire.beginTransmission(MPU_addr);
  Wire.write(0x3B);  // starting with register 0x3B (ACCEL_XOUT_H)
  Wire.endTransmission(false);
  Wire.requestFrom(MPU_addr,14,true);  // request a total of 14 registers
  AcX=Wire.read()<<8|Wire.read();  // 0x3B (ACCEL_XOUT_H) & 0x3C (ACCEL_XOUT_L)    
  AcY=Wire.read()<<8|Wire.read();  // 0x3D (ACCEL_YOUT_H) & 0x3E (ACCEL_YOUT_L)
  AcZ=Wire.read()<<8|Wire.read();  // 0x3F (ACCEL_ZOUT_H) & 0x40 (ACCEL_ZOUT_L)
  Tmp=Wire.read()<<8|Wire.read();  // 0x41 (TEMP_OUT_H) & 0x42 (TEMP_OUT_L)
  GyX=Wire.read()<<8|Wire.read();  // 0x43 (GYRO_XOUT_H) & 0x44 (GYRO_XOUT_L)
  GyY=Wire.read()<<8|Wire.read();  // 0x45 (GYRO_YOUT_H) & 0x46 (GYRO_YOUT_L)
  GyZ=Wire.read()<<8|Wire.read();  // 0x47 (GYRO_ZOUT_H) & 0x48 (GYRO_ZOUT_L)
  Serial.print("AcX = "); Serial.print(AcX);
  Serial.print(" | AcY = "); Serial.print(AcY);
  Serial.print(" | AcZ = "); Serial.print(AcZ);
  Serial.print(" | Tmp = "); Serial.print(Tmp/340.00+36.53);  //equation for temperature in degrees C from datasheet
  Serial.print(" | GyX = "); Serial.print(GyX);
  Serial.print(" | GyY = "); Serial.print(GyY);
  Serial.print(" | GyZ = "); Serial.print(GyZ);
  Serial.print(" | xvary = "); Serial.println(xvary);
  delay(333);
xcurrent = GyX;
ycurrent = GyY;
zcurrent = GyZ;

xvary =(xcurrent-xlast);
yvary =(ycurrent-ylast);
zvary =(zcurrent-zlast);


if (xvary > threshold) {
  
      digitalWrite(led1, HIGH);
    } else {
    digitalWrite(led1, LOW);
    }



if (yvary > threshold) {
  
      digitalWrite(led2, HIGH);
    } else {
    digitalWrite(led2, LOW);
    }



if (zvary > threshold) {
  
      digitalWrite(led3, HIGH);
    } else {
    digitalWrite(led3, LOW);
    }

xlast = xcurrent;
ylast = ycurrent;  
zlast = zcurrent;  
}

and I'll have another go of mashing them up and re-post shortly

The mixed code ends up like this and results in no MP3, No serial comms to PC, but the LEDs still seem to trigger okay

// MPU-6050 Short Example Sketch
// By Arduino User JohnChi
// August 17, 2014
// Public Domain
#include<Wire.h>
#include <SoftwareSerial.h>
c#include<Wire.h>




#define ARDUINO_RX 2//should connect to TX of the Serial MP3 Player module
#define ARDUINO_TX 3//connect to RX of the module


SoftwareSerial mySerial(ARDUINO_RX, ARDUINO_TX); 

static int8_t Send_buf[8] = {0} ;  
#define CMD_PLAY_W_INDEX 0X03
#define CMD_SET_VOLUME 0X06
#define CMD_SEL_DEV 0X09
#define DEV_TF 0X02
#define CMD_PLAY 0X0D
#define CMD_PAUSE 0X0E
#define CMD_SINGLE_CYCLE 0X19
#define SINGLE_CYCLE_ON 0X00
#define SINGLE_CYCLE_OFF 0X01
#define CMD_PLAY_W_VOL 0X22


 void sendCommand(int8_t command, int16_t dat)
{
  delay(20);
  Send_buf[0] = 0x7e; //starting byte
  Send_buf[1] = 0xff; //version
  Send_buf[2] = 0x06; //the number of bytes of the command without starting byte and ending byte
  Send_buf[3] = command; //
  Send_buf[4] = 0x00;//0x00 = no feedback, 0x01 = feedback
  Send_buf[5] = (int8_t)(dat >> 8);//datah
  Send_buf[6] = (int8_t)(dat); //datal
  Send_buf[7] = 0xef; //ending byte
  for(uint8_t i=0; i<8; i++)//
  {
    mySerial.write(Send_buf[i]) ;
  }
}



void setup(){

    pinMode(led1, OUTPUT);
        pinMode(led2, OUTPUT);
            pinMode(led3, OUTPUT);
  
  Wire.begin();
  Wire.beginTransmission(MPU_addr);
  Wire.write(0x6B);  // PWR_MGMT_1 register
  Wire.write(0);     // set to zero (wakes up the MPU-6050)
  Wire.endTransmission(true);
  Serial.begin(9600);

  Wire.beginTransmission(MPU_addr);
  Wire.write(0x3B);  // starting with register 0x3B (ACCEL_XOUT_H)
  Wire.endTransmission(false);
  Wire.requestFrom(MPU_addr,14,true);  // request a total of 14 registers 
  delay (250);
 GyX=Wire.read()<<8|Wire.read();  // 0x43 (GYRO_XOUT_H) & 0x44 (GYRO_XOUT_L)
  GyY=Wire.read()<<8|Wire.read();  // 0x45 (GYRO_YOUT_H) & 0x46 (GYRO_YOUT_L)
  GyZ=Wire.read()<<8|Wire.read();  // 0x47 (GYRO_ZOUT_H) & 0x48 (GYRO_ZOUT_L)
xlast = GyX;
ylast = GyY;
zlast = GyZ;


  delay(500);//Wait chip initialization is complete
    sendCommand(CMD_SEL_DEV, DEV_TF);//select the TF card  
  
}
void loop(){
  Wire.beginTransmission(MPU_addr);
  Wire.write(0x3B);  // starting with register 0x3B (ACCEL_XOUT_H)
  Wire.endTransmission(false);
  Wire.requestFrom(MPU_addr,14,true);  // request a total of 14 registers
  AcX=Wire.read()<<8|Wire.read();  // 0x3B (ACCEL_XOUT_H) & 0x3C (ACCEL_XOUT_L)    
  AcY=Wire.read()<<8|Wire.read();  // 0x3D (ACCEL_YOUT_H) & 0x3E (ACCEL_YOUT_L)
  AcZ=Wire.read()<<8|Wire.read();  // 0x3F (ACCEL_ZOUT_H) & 0x40 (ACCEL_ZOUT_L)
  Tmp=Wire.read()<<8|Wire.read();  // 0x41 (TEMP_OUT_H) & 0x42 (TEMP_OUT_L)
  GyX=Wire.read()<<8|Wire.read();  // 0x43 (GYRO_XOUT_H) & 0x44 (GYRO_XOUT_L)
  GyY=Wire.read()<<8|Wire.read();  // 0x45 (GYRO_YOUT_H) & 0x46 (GYRO_YOUT_L)
  GyZ=Wire.read()<<8|Wire.read();  // 0x47 (GYRO_ZOUT_H) & 0x48 (GYRO_ZOUT_L)
  Serial.print("AcX = "); Serial.print(AcX);
  Serial.print(" | AcY = "); Serial.print(AcY);
  Serial.print(" | AcZ = "); Serial.print(AcZ);
  Serial.print(" | Tmp = "); Serial.print(Tmp/340.00+36.53);  //equation for temperature in degrees C from datasheet
  Serial.print(" | GyX = "); Serial.print(GyX);
  Serial.print(" | GyY = "); Serial.print(GyY);
  Serial.print(" | GyZ = "); Serial.print(GyZ);
  Serial.print(" | xvary = "); Serial.println(xvary);
  delay(333);
xcurrent = GyX;
ycurrent = GyY;
zcurrent = GyZ;

xvary =(xcurrent-xlast);
yvary =(ycurrent-ylast);
zvary =(zcurrent-zlast);


if (xvary > threshold) {
  
      digitalWrite(led1, HIGH);
       sendCommand(CMD_PLAY_W_VOL, 0X1001);
   delay(100);
    } else {
    digitalWrite(led1, LOW);
    }



if (yvary > threshold) {
  
      digitalWrite(led2, HIGH);
       sendCommand(CMD_PLAY_W_VOL, 0X1001);
   delay(100);
    } else {
    digitalWrite(led2, LOW);
    }



if (zvary > threshold) {
  
      digitalWrite(led3, HIGH);
       sendCommand(CMD_PLAY_W_VOL, 0X1001);
   delay(100);
   
    } else {
    digitalWrite(led3, LOW);
    }

xlast = xcurrent;
ylast = ycurrent;  
zlast = zcurrent;  
}