HD44780_SR4W.cpp

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#include "HD44780.hh"

HD44780::SR4W::SR4W(Board::DigitalPin sda,
                    Board::DigitalPin scl,
                    Board::DigitalPin en,
                    Board::DigitalPin bt) :
  m_sda(sda),
  m_scl(scl),
  m_en(en),
  m_bt(bt, 1),
  m_rs(0)
{
}

bool
HD44780::SR4W::setup()
{
  return (true);
}

void
HD44780::SR4W::write4b(uint8_t data)
{
  write8b(data);
}

void
HD44780::SR4W::write8b(uint8_t data)
{
  m_sda.write(data, m_scl);
  synchronized {
    m_sda._write(m_rs);
    m_en._toggle();
    m_en._toggle();
  }
  DELAY(SHORT_EXEC_TIME);
}

void
HD44780::SR4W::set_mode(uint8_t flag)
{
  m_rs = flag;
}

void
HD44780::SR4W::set_backlight(uint8_t flag)
{
  m_bt.write(flag);
}