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% Copyright 2017 ROBOTIS CO., LTD.
%
% Licensed under the Apache License, Version 2.0 (the "License");
% you may not use this file except in compliance with the License.
% You may obtain a copy of the License at
%
%     http://www.apache.org/licenses/LICENSE-2.0
%
% Unless required by applicable law or agreed to in writing, software
% distributed under the License is distributed on an "AS IS" BASIS,
% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
% See the License for the specific language governing permissions and
% limitations under the License.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

% Author: Ryu Woon Jung (Leon)

%
% *********     Ping Example      *********
%
%
% Available Dynamixel model on this example : All models using Protocol 1.0
% This example is designed for using a Dynamixel MX-28, and an USB2DYNAMIXEL.
% To use another Dynamixel model, such as X series, see their details in E-Manual(emanual.robotis.com) and edit below variables yourself.
% Be sure that Dynamixel MX properties are already set as %% ID : 1 / Baudnum : 34 (Baudrate : 57600)
%

clc;
clear all;

lib_name = '';

if strcmp(computer, 'PCWIN')
  lib_name = 'dxl_x86_c';
elseif strcmp(computer, 'PCWIN64')
  lib_name = 'dxl_x64_c';
elseif strcmp(computer, 'GLNX86')
  lib_name = 'libdxl_x86_c';
elseif strcmp(computer, 'GLNXA64')
  lib_name = 'libdxl_x64_c';
elseif strcmp(computer, 'MACI64')
  lib_name = 'libdxl_mac_c';
end

% Load Libraries
if ~libisloaded(lib_name)
    [notfound, warnings] = loadlibrary(lib_name, 'dynamixel_sdk.h', 'addheader', 'port_handler.h', 'addheader', 'packet_handler.h');
end

% Protocol version
PROTOCOL_VERSION                = 1.0;          % See which protocol version is used in the Dynamixel

% Default setting
DXL_ID                          = 1;            % Dynamixel ID: 1
BAUDRATE                        = 57600;
DEVICENAME                      = 'COM1';       % Check which port is being used on your controller
                                                % ex) Windows: 'COM1'   Linux: '/dev/ttyUSB0' Mac: '/dev/tty.usbserial-*'

COMM_SUCCESS                    = 0;            % Communication Success result value
COMM_TX_FAIL                    = -1001;        % Communication Tx Failed

% Initialize PortHandler Structs
% Set the port path
% Get methods and members of PortHandlerLinux or PortHandlerWindows
port_num = portHandler(DEVICENAME);

% Initialize PacketHandler Structs
packetHandler();

dxl_comm_result = COMM_TX_FAIL;                 % Communication result

% Open port
if (openPort(port_num))
    fprintf('Succeeded to open the port!\n');
else
    unloadlibrary(lib_name);
    fprintf('Failed to open the port!\n');
    input('Press any key to terminate...\n');
    return;
end


% Set port baudrate
if (setBaudRate(port_num, BAUDRATE))
    fprintf('Succeeded to change the baudrate!\n');
else
    unloadlibrary(lib_name);
    fprintf('Failed to change the baudrate!\n');
    input('Press any key to terminate...\n');
    return;
end


% Try to ping the Dynamixel
% Get Dynamixel model number
dxl_model_number = pingGetModelNum(port_num, PROTOCOL_VERSION, DXL_ID);
dxl_comm_result = getLastTxRxResult(port_num, PROTOCOL_VERSION);
dxl_error = getLastRxPacketError(port_num, PROTOCOL_VERSION);
if dxl_comm_result ~= COMM_SUCCESS
    fprintf('%s\n', getTxRxResult(PROTOCOL_VERSION, dxl_comm_result));
elseif dxl_error ~= 0
    fprintf('%s\n', getRxPacketError(PROTOCOL_VERSION, dxl_error));
else
    fprintf('[ID:%03d] ping Succeeded. Dynamixel model number : %d\n', DXL_ID, dxl_model_number);
end


% Close port
closePort(port_num);

% Unload Library
unloadlibrary(lib_name);

close all;
clear all;
