i_ic.h

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#ifndef MOCK_I_IC_HPP
#define MOCK_I_IC_HPP
 
#include <cstdint>
 
#include <memory>
 
namespace simulator {
 
class IntegratedCircuitMock_I
{
public:
  // run an update of the object properties
  virtual void run_electrical_update() = 0;
 
  // the i2c adress of the device
  virtual uint8_t get_i2c_address() const = 0;
 
  // write data to this device
  virtual int i2c_write_data(const uint8_t registerAddress, const uint8_t dataSize, const uint8_t* dataBuffer)
  {
    if (_registerMap[registerAddress] != nullptr)
    {
      uint16_t data = dataBuffer[0];
      if (dataSize > 1)
        data |= (dataBuffer[1] << 8);
      return _registerMap[registerAddress]->write(data);
    }
 
    // failure
    return 1;
  }
 
  // read data from a register
  virtual int i2c_read_data(const uint8_t registerAddress, const uint8_t dataSize, uint8_t* dataBuffer)
  {
    if (_registerMap[registerAddress] != nullptr)
    {
      const uint16_t d = _registerMap[registerAddress]->read();
 
      dataBuffer[0] = d & 0xff;
      if (dataSize > 1)
        dataBuffer[1] = (d >> 8) & 0xff;
      return 0;
    }
 
    // failure
    return 1;
  }
 
  // simultaneous read write
  virtual int i2c_xfer_data(const int outSize, const uint8_t* out, const int inSize, uint8_t* in)
  {
    // fail
    return 1;
  }
 
  // register entry point
  struct Register
  {
    uint16_t _data = 0;
 
    virtual uint16_t read() { return _data; }
    virtual int write(uint16_t data)
    {
      _data = data;
      return 0;
    }
  };
 
protected:
  std::unique_ptr<Register> _registerMap[255];
 
private:
};
 
} // namespace simulator
 
#endif