DS2433.cpp

#include "OneWireHub.h"
#include "DS2433.h"

#define DEBUG_DS2433

DS2433::DS2433(byte ID1, byte ID2, byte ID3, byte ID4, byte ID5, byte ID6, byte ID7): OneWireItem(ID1, ID2, ID3, ID4, ID5, ID6, ID7){
  for (int i=0;i<sizeof(this->memory);i++)
    this->memory[i] = 0xFF;
}

bool DS2433::duty(OneWireHub * hub)
{
  uint16_t memory_address;
  uint8_t mem_offset;
  uint8_t b;
  uint16_t crc;

  uint8_t done = hub->recv();  
  
  switch (done) {
    // WRITE SCRATCHPAD COMMAND
    case 0x0F:
      // Adr1
      b = hub->recv();
      ((uint8_t*)&memory_address)[0] = b;

      // Adr2
      b = hub->recv();
      ((uint8_t*)&memory_address)[1] = b;
          
      for (int i=0;i<32;i++){
        hub->send(this->memory[memory_address+i]);
        if (hub->errno) break;
      }
    
      #ifdef DEBUG_DS2433
        Serial.print("DS2433 : WRITE SCRATCHPAD COMMAND : ");  
        Serial.println(memory_address, HEX);
      #endif  
      
      break;
      
  // READ SCRATCHPAD COMMAND
  case 0xAA:  
      // Adr1
      b = hub->recv();
      ((uint8_t*)&memory_address)[0] = b;

      // Adr2
      b = hub->recv();
      ((uint8_t*)&memory_address)[1] = b;
      
      // Offset
      mem_offset = hub->recv();
  
      #ifdef DEBUG_DS2433
        Serial.print("DS2433 : READ SCRATCHPAD COMMAND : ");  
        Serial.print(memory_address, HEX);
        Serial.print(",");
        Serial.println(mem_offset, HEX);
      #endif  
      
      break;
      
    // READ MEMORY
    case 0xF0:
      // Adr1
      b = hub->recv();
      ((uint8_t*)&memory_address)[0] = b;

      // Adr2
      b = hub->recv();
      ((uint8_t*)&memory_address)[1] = b;
     
      // data
      for (int i=0;i<32;i++)
        hub->send(this->memory[memory_address+i]);
      
      #ifdef DEBUG_DS2433
        Serial.print("DS2433 : READ MEMORY : ");  
        Serial.println(memory_address, HEX);
      #endif  
      
      break;
      
    default:    
      #ifdef DEBUG_hint
        Serial.print("DS2433=");
        Serial.println(done, HEX);
      #endif  
      break;    
  }
}