MPU-6050 on I2C freezes arduino

hi everyone,
i don't know if i'm on right section hope so. have been building custom steering wheel play racing simulation games on pc using arduino mega 2560 , megajoy library. due complications needed move steering axis on board (an arduino uno r3) , works taking analog value of potentiometer (on pin a0) , acceleration on y axis mpu-6050 (on dedicated sda , scl of uno), mapping them in 0-1024 range. problem comes when start using i2c on uno. using on mega gave no problems on reading itself, when move sda , scl pins on uno code freezes , never recovers back. whole code long (always enough memory available tho) , i'm not gonna post because nobody read it, problem comes basic test code:

code: [select]

#include<wire.h>
const int mpu=0x68;  // i2c address of mpu-6050
int16_t acx,acy,acz,tmp,gyx,gyy,gyz;
void setup(){
  wire.begin();
  wire.begintransmission(mpu);
  wire.write(0x6b);  // pwr_mgmt_1 register
  wire.write(0);     // set 0 (wakes mpu-6050)
  wire.endtransmission(true);
  serial.begin(9600);
}
void loop(){
  wire.begintransmission(mpu);
  wire.write(0x3b);  // starting register 0x3b (accel_xout_h)
  wire.endtransmission(false);
  wire.requestfrom(mpu,14,true);  // request 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("accelerometer: ");
  serial.print("x = "); serial.print(acx);
  serial.print(" | y = "); serial.print(acy);
  serial.print(" | z = "); serial.println(acz);
  //equation temperature in degrees c datasheet
  serial.print("temperature: "); serial.print(tmp/340.00+36.53); serial.println(" c ");
 
  serial.print("gyroscope: ");
  serial.print("x = "); serial.print(gyx);
  serial.print(" | y = "); serial.print(gyy);
  serial.print(" | z = "); serial.println(gyz);
  serial.println(" ");
  delay(333);
}

after few seconds , measurements (from 10 700) freezes. i've tried using watchdog kicks in project (you can notice stop on data stream , while racing isn't because can't control car, need better solution.

thanks in advance answer.

(sorry if english not best )

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Arduino Forum > Using Arduino > Networking, Protocols, and Devices (Moderator: fabioc84) > MPU-6050 on I2C freezes arduino

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