public async Task<bool> Init(int address, int cols, int rows, int charSize = LCDConstants.LCD_5x8DOTS,
int en = 6, int rw = 5,
int rs = 4, int d4 = 0,
int d5 = 1, int d6 = 2,
int d7 = 3,
int? backlightPin = null, BacklightPolarity? polarity = null)
{
_address = address;
if (_lcdHitachiI2Cio == null)
{
_lcdHitachiI2Cio = new LCD_Hitachi_I2CIO(_i2CDevice);
if (await _lcdHitachiI2Cio.Init(_address))
{
_lcdHitachiI2Cio.PortMode(LCDConstants.OUTPUT); // Set the entire IO extender to OUTPUT
_displayFunction = LCDConstants.LCD_4BITMODE | LCDConstants.LCD_1LINE | LCDConstants.LCD_5x8DOTS;
_lcdHitachiI2Cio.Write(0); // Set the entire port to LOW
}
}
await Begin(cols, rows, charSize);
_backlightPinMask = 0;
_backlightStsMask = LCD_NOBACKLIGHT;
_polarity = BacklightPolarity.Positive;
_en = (1 << en);
_rw = (1 << rw);
_rs = (1 << rs);
// Initialise pin mapping
_dataPins[0] = (1 << d4);
_dataPins[1] = (1 << d5);
_dataPins[2] = (1 << d6);
_dataPins[3] = (1 << d7);
if (backlightPin != null && polarity != null)
{
SetBacklightPin(backlightPin.Value, polarity.Value);
}
return true;
}
public I2CLCD(int address, int en, int rw, int rs, int d4, int d5, int d6, int d7, int backlightPin, BacklightPolarity pol)
{
_config(address, en, rw, rs, d4, d5, d6, d7);
SetBacklightPin(backlightPin, pol);
}
public I2CLCD(int address, int en, int rw, int rs, int backlightPin, BacklightPolarity pol)
{
_config(address, en, rw, rs, D4, D5, D6, D7);
SetBacklightPin(backlightPin, pol);
}
public I2CLCD(int address, int backlightPin, BacklightPolarity pol)
{
_config(address, EN, RW, RS, D4, D5, D6, D7);
SetBacklightPin(backlightPin, pol);
}
public override void SetBacklightPin(int value, BacklightPolarity pol)
{
_backlightPinMask = (1 << value);
_polarity = pol;
SetBacklight(Constants.BackLightOff);
}
public I2CLCD(int address, int en, int rw, int rs, int d4, int d5, int d6, int d7, int backlightPin, BacklightPolarity pol)
{
_config(address, en, rw, rs, d4, d5, d6, d7);
SetBacklightPin(backlightPin, pol);
}
public I2CLCD(int address, int en, int rw, int rs, int backlightPin, BacklightPolarity pol)
{
_config(address, en, rw, rs, D4, D5, D6, D7);
SetBacklightPin(backlightPin, pol);
}
public I2CLCD(int address, int backlightPin, BacklightPolarity pol)
{
_config(address, EN, RW, RS, D4, D5, D6, D7);
SetBacklightPin(backlightPin, pol);
}
public override void SetBacklightPin(int value, BacklightPolarity pol)
{
_backlightPinMask = (1 << value);
_polarity = pol;
SetBacklight(Constants.BackLightOff);
}
public virtual void SetBacklightPin(int value, BacklightPolarity pol)
{
}
public virtual void SetBacklightPin(int value, BacklightPolarity pol)
{
}
