Example #1
0
  void send_heartbeat()
  {
    double maxdepth = 15;

    std::stringstream buf;
    buf << "CR0\r";              // load factory settings (won't change baud rate)
    buf << "#BJ 100 110 000\r";  // enable only bottom track high res velocity and bottom track
                                 // range
    // buf << "#BK2\r"; // send water mass pings when bottom track pings fail
    // buf << "#BL7,36,46\r"; // configure near layer and far layer to 12 and 15 feet
    buf << "ES0\r";         // 0 salinity
    buf << "EX00000\r";     // no transformation
    buf << "EZ10000010\r";  // configure sensor sources. Provide manual data for everything except
                            // speed of sound and temperature
    buf << "BX" << std::setw(5) << std::setfill('0') << (int)(maxdepth * 10 + 0.5) << '\r';  // configure max depth
    buf << "TT2012/03/04, 05:06:07\r";                                                       // set RTC
    buf << "CS\r";                                                                           // start pinging

    std::string str = buf.str();

    try  // Write heartbeat to serial port
    {
      size_t written = 0;
      while (written < str.size())
      {
        written += p.write_some(boost::asio::buffer(str.data() + written, str.size() - written));
      }
    }
    catch (const std::exception &exc)
    {
      ROS_ERROR_THROTTLE(0.5, "DVL: error on write: %s; dropping heartbeat", exc.what());
    }
  }
Example #2
0
void Controls::joy_callback(const sensor_msgs::Joy::ConstPtr& joy)
{
  int leftServoAngle = 0;
  int rightServoAngle = 0;
  int rightMultiplier = 1;
  int leftMultiplier = 1;

  int leftPower = 0;
  int rightPower = 0;

  if(joy->buttons[rightTrigger] > 0){
    rightMultiplier = 0;
  }
  if(joy->buttons[leftTrigger] > 0){
    leftMultiplier = 0;
  }
  /* No Servos, because I said so */
  if(joy->buttons[xButton] > 0){
    leftServoAngle = 90;
    rightServoAngle = 90;
  }

  leftPower = joy->axes[leftStickY] * (100.0 / 127.0) * leftMultiplier;
  rightPower = joy->axes[leftStickY] * (100.0 / 127.0) * rightMultiplier;
  leftPower = 1500 + leftPower;
  rightPower = 1500 + rightPower;

  const int SIZE = 11;
  unsigned char packet[SIZE];
  packet[0] = '-';
  packet[1] = leftServoAngle >> 8;
  packet[2] = leftServoAngle;
  packet[3] = rightServoAngle >> 8;
  packet[4] = rightServoAngle;
  packet[5] = 0 >> 8;
  packet[6] = 0;
  packet[7] = leftPower >> 8;
  packet[8] = leftPower;
  packet[9] = rightPower >> 8;
  packet[10] = rightPower;
  s_p.write_some(boost::asio::buffer(&packet, SIZE));
}
Example #3
0
 void callback(const std_msgs::Float32::ConstPtr& angle)
 {
   unsigned char d = (char)angle->data;
   s_p.write_some(boost::asio::buffer(&d, 1));
 }