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--- getting_started:write_app:use_on_host [2021/03/24 19:01] – ursgraf
+++ getting_started:write_app:use_on_host [2023/04/13 08:57] – [Say Hello with EEROS] ursgraf
@@ Line 1: / Line 1: @@
 ====== Writing EEROS Applications for the Host ======
 Back to [[getting_started:compile_eeros_host|]].
+You will use C++ to develop your EEROS applications. For this you need at least some knowledge of the basic language features. A good starting point might be [[https://www.cplusplus.com/doc/tutorial/]]. Minimal help can also be found under [[tools:cplusplus|]].
 What do you want to do next?
@@ Line 7: / Line 9: @@
   * [[getting_started:write_app:use_on_host#Use Existing Project|]]
+===== Say Hello with EEROS =====
-This will build EEROS without the ROS examples. If you have ROS installed and want to build the ROS examples, change the ''config.sh.in'' to
+  - Create a project directory within your EEROS project directory and change into it with <code>
-<code>
+$ mkdir hello
-use_simulator=true
+$ cd hello
-use_comedi=false
+</code>
-use_ros=true
+  - Create a text file "main.cpp" and copy the following code into it <code cpp>
-use_ros_setup_script=true
+#include <iostream>
+#include <eeros/logger/Logger.hpp>
+#include <eeros/logger/StreamLogWriter.hpp>
+int main() {
+  using namespace eeros::logger;
+  Logger::setDefaultStreamLogger(std::cout);
+  Logger log = Logger::getLogger();
+  log.info() << "Hello, EEROS";
-ros_setup_script=/opt/ros/kinetic/setup.bash
+  return 0;
+}
 </code>
-The last line must point to your ROS installation path. In general this will be ''/opt/ros/$ros_version_name/setup.bash''.
+  - Create a text file "CMakeLists.txt" and copy the following text into it: <code cpp>
+cmake_minimum_required(VERSION 3.10)
+project(helloworld)
-Now you can run the ''clone'' script
+find_package(EEROS REQUIRED)
-<code>
-$ ./clone.sh
+add_executable(helloworld main.cpp)
+target_link_libraries(helloworld PRIVATE eeros)
+</code>
+  - Create a build directory for your new project and change into it with <code>
+$ mkdir build-x86
+$ cd build-x86
 </code>
-After this you can continue with [[getting_started:compile_eeros_host|]].
+  - Build the project with <code>
+$ cmake -DCMAKE_INSTALL_PREFIX=../../install-x86 ../../hello
+$ make
+</code>
+  - Make changes to "main.cpp", save them and rebuild with <code>
+$ make
+</code> In order to be able to write your own EEROS programs, you could use any text editor. However, we recommend to use an integrated development environment, see [[getting_started:kdevelop|]].
+Continue with [[getting_started:deploy:deploy_host|]].
+===== Use Existing Project =====
+As an example we use the [[getting_started:tutorials:oneaxis|]] demo program.
+  - Fetch the code of the application from within your EEROS project directory with <code>
+$ git clone https://github.com/eeros-project/simple-motor-control.git
+$ cd simple-motor-control
+</code>
+  - Create a build directory for your new project and change into it with <code>
+$ mkdir ../build-x86/simple-motor-control
+$ cd ../build-x86/simple-motor-control
+</code>
+  - Build the project with <code>
+$ cmake -DCMAKE_INSTALL_PREFIX=../../install-x86 -DREQUIRED_EEROS_VERSION=1.3 ../../simple-motor-control
+$ make
+</code>
+Continue with [[getting_started:deploy:deploy_host|]].