DS2408.cpp

#include "OneWireHub.h"
#include "DS2408.h"

#define DEBUG_DS2408

//=================== DS2408 ==========================================
DS2408::DS2408(byte ID1, byte ID2, byte ID3, byte ID4, byte ID5, byte ID6, byte ID7): OneWireItem(ID1, ID2, ID3, ID4, ID5, ID6, ID7){
  this->memory[0] = 0xF0;  // Cmd
  this->memory[1] = 0x88;  // AdrL
  this->memory[2] = 0x00;  // AdrH
  this->memory[3] = 0;     // D0
  this->memory[4] = 0;     // D1
  this->memory[5] = 0;     // D2
  this->memory[6] = 0;     // D3
  this->memory[7] = 0;     // D4
  this->memory[8] = 0;     // D5
  this->memory[9] = 0xFF;  // D6
  this->memory[10] = 0xFF; // D7
  this->memory[11] = 0;  // CRCL
  this->memory[12] = 0;  // CRCH
}

bool DS2408::updateCRC(){
//  ((sDS2408*)(this->memory))->CRC = crc16( this->memory, 11 );

  ow_crc16_reset();      
  for (int i=0;i<11;i++) ow_crc16_update(this->memory[i]);
  ((sDS2408*)(this->memory))->CRC = ow_crc16_get();

  //Serial.print("CRC=");
  //Serial.println( ((sDS2408*)(this->memory))->CRC, HEX);
}

bool DS2408::duty(OneWireHub * hub)
{
  byte addrL;
  byte addrH;
  uint8_t data;
 
  uint8_t done = hub->recv();    
  
  switch (done) {
    // Read PIO Registers
    case 0xF0:
      // Cmd
      this->memory[0] = done;
      
      // AdrL
      this->memory[1] = hub->recv();
      
      // AdrH
      this->memory[2] = hub->recv();
      
      // UpdateCrc
      this->updateCRC();
      
      // Data
      data = hub->sendData(this->memory+3, 10);
     
      #ifdef DEBUG_DS2408
        Serial.print("DS2408 : PIO Registers : ");
        Serial.print(this->memory[2], HEX);
        Serial.print(" ");
        Serial.print(this->memory[1], HEX);
        Serial.println();
      #endif  

      break;
     
    default:
      #ifdef DEBUG_hint    
        Serial.print("DS2408=");
        Serial.println(done, HEX);
      #endif  
      return FALSE;
  }
  
  return TRUE;  
}