我正在运行一个必须以 1000Hz 读取的加速度计，因此收集加速度计数据的循环需要在不到 1 毫秒的时间内运行，目前它的运行时间约为 3.4 毫秒，是否可以优化此循环以减少其花费的时间跑？

void readVibrations(int m){
  t = micros();     // setting our start time
  start = t;
  unsigned long t1 = start;
  while(t - start < 120000000){ //Read for 2Min
      
      // Get a new sensor event,normalized 
      sensors_event_t event; 
      msa.getEvent(&event);
      
      // acceleration as measured in m/s^2)
        myFile.print(event.acceleration.x);
        myFile.write(delim); myFile.print(event.acceleration.y); 
        myFile.write(delim); myFile.print(event.acceleration.z); 
        myFile.write(nl);

      t= micros();
      myFile.print(t-t1);
      myFile.write(nl);
      t1 = t;
//    }
  }