DS2423.cpp

#include "OneWireHub.h"
#include "DS2423.h"

#define DEBUG_DS2423

DS2423::DS2423(byte ID1, byte ID2, byte ID3, byte ID4, byte ID5, byte ID6, byte ID7): OneWireItem(ID1, ID2, ID3, ID4, ID5, ID6, ID7){
}

bool DS2423::duty(OneWireHub * hub)
{
  uint16_t memory_address;
  uint16_t memory_address_start;
  uint8_t b;
  uint16_t crc;
  
  ow_crc16_reset();
  
  uint8_t done = hub->recv();    
  switch (done) {
    // Read Memory + Counter
    case 0xA5:
      ow_crc16_update(0xA5);
      
      // Adr1
      b = hub->recv();
      ((uint8_t*)&memory_address)[0] = b;
      ow_crc16_update(b);

      // Adr2
      b = hub->recv();
      ((uint8_t*)&memory_address)[1] = b;
      ow_crc16_update(b);
      
      memory_address_start = memory_address;
      
      // data
      for (int i=0;i<32;i++){
        hub->send(0xff);
        ow_crc16_update(0xff);
      }      

      // cnt      
      hub->send(0x00);
      ow_crc16_update(0x00);
      
      hub->send(0x00);
      ow_crc16_update(0x00);
      
      hub->send(0x00);
      ow_crc16_update(0x00);
      
      hub->send(0x00);
      ow_crc16_update(0x00);

      // zero
      hub->send(0x00);
      ow_crc16_update(0x00);
      
      hub->send(0x00);
      ow_crc16_update(0x00);
      
      hub->send(0x00);
      ow_crc16_update(0x00);
      
      hub->send(0x00);
      ow_crc16_update(0x00);

      // crc
      crc = ow_crc16_get();
      hub->send(((uint8_t*)&crc)[0]);
      hub->send(((uint8_t*)&crc)[1]);
      ow_crc16_reset();
      
      #ifdef DEBUG_DS2423
        Serial.print("DS2423 : Read Memory + Counter : ");  
        Serial.println(memory_address_start, HEX);
      #endif  
      
      break;
      
    default:    
      #ifdef DEBUG_hint
        Serial.print("DS2423=");
        Serial.println(done, HEX);
      #endif  
      break;    
  }
  
  return TRUE;
}