/// <summary>
/// Construct the driver using the specific SPI port.
/// </summary>
/// <param name="busSelector">Which SPI bus to use</param>
/// <param name="width">Width of display in pixels</param>
/// <param name="height">Height of display in pixels</param>
/// <param name="dcPin">The Gpio pin to use for D/C (Data or Command) signal</param>
/// <param name="rstPin">The Gpio pin to use for hardware reset of the display</param>
/// <param name="csPin">The Cpio pin to use for Chip Select signal for SPI communication</param>
/// <param name="bufSize">The size of the internal display buffer</param>
public ILI9341_SPI(string busSelector, uint width, uint height, GpioPin dcPin, GpioPin rstPin, GpioPin csPin, uint bufSize = 256)
{
if (dcPin == null || rstPin == null || csPin == null)
{
throw new ArgumentNullException();
}
_dcPin = dcPin;
_rstPin = rstPin;
_csPin = csPin;
_dcPin.SetDriveMode(GpioPinDriveMode.Output);
_rstPin.SetDriveMode(GpioPinDriveMode.Output);
_csPin.SetDriveMode(GpioPinDriveMode.Output);
SpiBusInfo busInfo = SpiDevice.GetBusInfo(busSelector);
var spiConnSettings = new SpiConnectionSettings(csPin.PinNumber)
{
ClockFrequency = 10000000, //10 MHz SPI clock,max period for read is 150ns, write is 100ns
DataBitLength = 8, //8-bit data length
Mode = SpiMode.Mode3 //mode 3, data read on the rising edge - idle high
};
_coreWidth = Width = width;
_coreHeight = Height = height;
_buffer = new byte[bufSize];
_font = new PixelFont7X9();//default font
_spiDevice = SpiDevice.FromId(busSelector, spiConnSettings);
}
/// <summary>
/// Constructor
/// </summary>
/// <param name="busSelector">The I2C bus selector</param>
/// <param name="addr">The I2C device address</param>
/// <param name="width">Width of OLED display (in pixel)</param>
/// <param name="height">Height of OLED display (in pixel)</param>
public OLEDSSD1306_I2C(string busSelector = "I2C1", int addr = 0x3C, int width = 128, int height = 32)
{
this._i2cDevice = I2cDevice.FromId(busSelector, new I2cConnectionSettings(addr)
{
BusSpeed = I2cBusSpeed.StandardMode, SharingMode = I2cSharingMode.Shared
});;
this._width = width;
this._height = height;
this._pages = _height / 8;
_buffer = new byte[width * _pages];
_font = new PixelFont7X9();//default font
}
/// <summary>
/// Set the font object to use to render text elements.
/// </summary>
/// <param name="font">ILCDFont instance.</param>
public void SetFont(IPixelFont font)
{
this.Font = font ?? throw new ArgumentNullException("font");
}