private async Task InitDisplayAsync()
{
// Allocate buffers
var bytesPerPixel = GraphicsTools.GetBitsPerPixel(pixelFormat) / 8;
displayBuffer = new byte[Width * Height * bytesPerPixel];
// displayBuffer = new byte[Width * Height * 3];
// Hardware Reset
resetPin.Write(GpioPinValue.High);
await Task.Delay(500);
resetPin.Write(GpioPinValue.Low);
await Task.Delay(500);
resetPin.Write(GpioPinValue.High);
await Task.Delay(500);
// Which display type?
switch (displayType)
{
case ST7735DisplayType.B:
await InitDisplayBAsync();
break;
case ST7735DisplayType.R:
case ST7735DisplayType.RBlack:
case ST7735DisplayType.RGreen:
case ST7735DisplayType.RGreen144:
case ST7735DisplayType.RRed:
await InitDisplayRAsync();
break;
default:
throw new InvalidOperationException(string.Format(Strings.UnknownDisplayType, displayType));
}
// Breathe
await Task.Delay(10);
// If the orientation is not portrait we need to update orientation
if (orientation != DisplayOrientations.Portrait)
{
// Set orientation, do not flip
// Note, this also reverts to RAM mode when done
SetOrientation(false);
}
// Set address window to full size of the display
// Note, this also reverts to RAM mode when done
SetAddressWindow(0, 0, (byte)(width - 1), (byte)(height - 1));
}