Method begin

libraries/DAC8554/DAC8554.cpp:40–82

initializes the SPI and sets internal state

//  initializes the SPI
//  and sets internal state
void DAC8554::begin()
{
  pinMode(_select, OUTPUT);
  digitalWrite(_select, HIGH);

  _spi_settings = SPISettings(_SPIspeed, MSBFIRST, SPI_MODE1);

  if(_hwSPI)
  {
    #if defined(ESP32)
    if (_useHSPI)      //  HSPI
    {
      mySPI = new SPIClass(HSPI);
      mySPI->end();
      mySPI->begin(14, 12, 13, _select);   //  CLK=14  MISO=12  MOSI=13
    }
    else               //  VSPI
    {
      mySPI = new SPIClass(VSPI);
      mySPI->end();
      mySPI->begin(18, 19, 23, _select);   //  CLK=18  MISO=19  MOSI=23
    }
    #else              //  generic hardware SPI
    mySPI = &SPI;
    mySPI->end();
    mySPI->begin();
    #endif
    delay(1);
  }
  else                 //  software SPI
  {
    pinMode(_dataOut, OUTPUT);
    pinMode(_clock, OUTPUT);
    digitalWrite(_dataOut, LOW);
    digitalWrite(_clock, LOW);
  }

  for (uint8_t i = 0; i < 4; i++)
  {
    _register[i] = 0;
    _value[i] = 0;
  }
}


#if defined(ESP32)