HD44780_SR3WSPI.cpp

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#include "HD44780.hh"

HD44780::SR3WSPI::SR3WSPI(Board::DigitalPin en) :
  SPI::Driver(en, SPI::PULSE_HIGH),
  m_port()
{
}

bool
HD44780::SR3WSPI::setup()
{
  return (false);
}

void
HD44780::SR3WSPI::write4b(uint8_t data)
{
  m_port.data = data;
  spi.acquire(this);
    spi.begin();
      spi.transfer(m_port);
    spi.end();
  spi.release();
}

void
HD44780::SR3WSPI::write8b(uint8_t data)
{
  spi.acquire(this);
    spi.begin();
      m_port.data = (data >> 4);
      spi.transfer(m_port);
      m_port.data = data;
      m_cs._toggle();
      m_cs._toggle();
      spi.transfer(m_port);
    spi.end();
  spi.release();
  DELAY(SHORT_EXEC_TIME);
}

void
HD44780::SR3WSPI::set_mode(uint8_t flag)
{
  m_port.rs = flag;
}

void
HD44780::SR3WSPI::set_backlight(uint8_t flag)
{
  m_port.bt = flag;
}