source: flair-src/trunk/lib/FlairSimulator/src/SimuUgvControls.cpp

// %flair:license{
// This file is part of the Flair framework distributed under the
// CECILL-C License, Version 1.0.
// %flair:license}
//  created:    2020/12/07
//  filename:   SimuUgvControls.cpp
//
//  author:     Guillaume Sanahuja
//              Copyright Heudiasyc UMR UTC/CNRS 7253
//
//  version:    $Id: $
//
//  purpose:    Class for a simulation ugv
//
//
/*********************************************************************/
#include "SimuUgvControls.h"
#include <SharedMem.h>
#include <sstream>
#include <string.h>

using std::string;
using std::ostringstream;
using namespace flair::core;

namespace flair {
namespace actuator {


SimuUgvControls::SimuUgvControls(const Object *parent, string name,
                   uint32_t modelId,uint32_t deviceId)
    : IODevice(parent, name) {
  shmem =new SharedMem(this, ShMemName(modelId, deviceId), 2 * sizeof(float)+sizeof(Time));
      
  buf=(char*)malloc(2 * sizeof(float)+sizeof(Time));
  if(buf==NULL) {
    Err("error creating buffer\n");
    return;
  } 
  
  // reset values
  float *values=(float*)buf;
  for (int i = 0; i < 2; i++) values[i] = 0;
  Time time=GetTime();
  memcpy(buf+2 * sizeof(float),&time,sizeof(Time));

  shmem->Write(buf, 2 * sizeof(float)+sizeof(Time));
  
  SetIsReady(true);
}

SimuUgvControls::~SimuUgvControls() {
  if(buf!=NULL) free(buf);
}

string SimuUgvControls::ShMemName(uint32_t modelId,uint32_t deviceId) {
  ostringstream dev_name;
  dev_name << "simu" <<  modelId << "_ugvcontrols_" << deviceId;
  return dev_name.str().c_str();
}


void SimuUgvControls::GetControls(float *speed,float *turn,Time* time) const {
  float *values=(float*)buf;
  shmem->Read(buf, 2 * sizeof(float)+sizeof(Time));
  memcpy(time,buf+2 * sizeof(float),sizeof(Time));

  *speed = values[0];
  *turn = values[1];
}

} // end namespace actuator
} // end namespace flair