fake_stream.h

#ifndef COG_ESTIMATOR_FAKE_STREAM_H_
#define COG_ESTIMATOR_FAKE_STREAM_H_

namespace strm {

struct my_stream_tag{};

template<typename T> my_stream_tag const& operator<<(my_stream_tag const& os, T const& t){
  Serial.print(t);
  return os;
}

static constexpr my_stream_tag cout;

static constexpr auto endl = '\n';

};

#endif