/**
 * Smart Meter Readings Deployment for StromDAO Stromkonto
 * ====================================================================
 * Messwerte-Repräsentation für intelligente Messsysteme zur 
 * Kontrollstelle.
 * 
 * Kontakt V0.3: 
 * Thorsten Zoerner <thorsten.zoerner@stromdao.de)
 * https://stromdao.de/
 */
 
 
contract StromDAOReadingV3  {
    
   mapping(address=>uint256) public readings;
   event pinged(address link,uint256 time,uint256 total,uint256 delta);
   
   function pingDelta(uint256 _delta) {
       readings[msg.sender]+=_delta;
       pinged(msg.sender,now,readings[msg.sender],_delta);
   }
   
   function pingReading(uint256 _reading) {
       pinged(msg.sender,now,_reading,_reading-readings[msg.sender]);
       readings[msg.sender]=_reading;
   }
}