DS1307.cpp

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#include "DS1307.hh"

int
DS1307::read(void* ram, uint8_t size, uint8_t pos)
{
  twi.acquire(this);
  twi.write(pos);
  int count = twi.read(ram, size);
  twi.release();
  return (count);
}

int
DS1307::write(void* ram, uint8_t size, uint8_t pos)
{
  twi.acquire(this);
  int count = twi.write(pos, ram, size);
  twi.release();
  if (count > 0) count -= 1;
  return (count);
}


bool
DS1307::enable(Rate rs)
{
  control_t control;
  control.rs = rs;
  control.sqwe = 1;
  control.out = 1;
  uint8_t pos = offsetof(DS1307::timekeeper_t, control);
  int count = write(&control, sizeof(control), pos);
  return (count == sizeof(control));
}

bool
DS1307::disable()
{
  control_t control;
  uint8_t pos = offsetof(DS1307::timekeeper_t, control);
  int count = write(&control, sizeof(control), pos);
  return (count == sizeof(control));
}