OWI.h

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#ifndef HARDWARE_OWI_H
#define HARDWARE_OWI_H

#include "OWI.h"
#include "Driver/DS2482.h"

namespace Hardware {
class OWI : public ::OWI {
public:
  OWI(TWI& twi, uint8_t subaddr = 0) :
    m_bridge(twi, 0x18 | (subaddr & 0x03))
  {
  }

  virtual bool reset()
  {
    return (m_bridge.one_wire_reset());
  }

  virtual uint8_t read(uint8_t bits = CHARBITS)
  {
    uint8_t res = 0;
    if (bits == CHARBITS) {
      m_bridge.one_wire_read_byte(res);
    }
    else {
      uint8_t adjust = CHARBITS - bits;
      bool value = 0;
      while (bits--) {
        res >>= 1;
        m_bridge.one_wire_read_bit(value);
        res |= (value ? 0x80 : 0x00);
      }
      res >>= adjust;
    }
    return (res);
  }

  virtual void write(uint8_t value, uint8_t bits = CHARBITS)
  {
    if (bits == CHARBITS) {
      m_bridge.one_wire_write_byte(value);
    }
    else {
      while (bits--) {
        m_bridge.one_wire_write_bit(value & 0x01);
        value >>= 1;
      }
    }
  }

  virtual int8_t triplet(uint8_t& dir)
  {
    return (m_bridge.one_wire_triplet(dir));
  }

  bool device_reset()
  {
    return (m_bridge.device_reset());
  }

  bool device_configuration(bool apu = true, bool spu = false, bool iws = false)
  {
    return (m_bridge.write_configuration(apu, spu, iws));
  }

  bool channel_select(uint8_t chan)
  {
    return (m_bridge.channel_select(chan));
  }

protected:
  DS2482 m_bridge;
};
};
#endif