internal static byte[] GetBuffer(Ssd1306 display)
{
if (BufferFieldInfo == null)
{
var properties = typeof(Ssd1306).GetFields(System.Reflection.BindingFlags.Instance
| System.Reflection.BindingFlags.GetProperty
| System.Reflection.BindingFlags.SetProperty
| System.Reflection.BindingFlags.NonPublic);
for (int index = 0; index < properties.Length; index++)
{
if (properties[index].Name.Contains("buffer"))
{
BufferFieldInfo = properties[index];
}
}
}
if (BufferFieldInfo == null)
{
return(null);
}
return(BufferFieldInfo.GetValue(display) as byte[]);
}
internal static void SendCommandsInternal(this Ssd1306 display, byte[] commands)
{
if (SendCommandsMethodInfo == null)
{
SendCommandsMethodInfo = typeof(Ssd1306).GetMethod("SendCommands", System.Reflection.BindingFlags.Instance
| System.Reflection.BindingFlags.InvokeMethod
| System.Reflection.BindingFlags.NonPublic);
}
if (SendCommandsMethodInfo == null)
{
throw new EntryPointNotFoundException("method SendCommands not found on " + nameof(Ssd1306));
}
SendCommandsMethodInfo.Invoke(display, new object[] { commands });
}
public static void DrawBitmap(this Ssd1306 display, byte startColumn, byte startPage, VerticalByteBitmap bitmap, BitmapOp bitmapOp)
{
var buffer = GetBuffer(display);
var width = Math.Min(display.Width, startColumn + bitmap.Width);
var pageHeight = display.Height / 8;
var pageWidth = display.Width;
for (int yPage = 0; yPage < bitmap.Rectangle.YByteHeight; yPage++)
{
var singlePage = bitmap.Buffer[yPage];
if (yPage + startPage < pageHeight)
{
for (int xIndex = 0; xIndex < bitmap.Width; xIndex++)
{
var offset = xIndex + startColumn + ((yPage + startPage) * pageWidth);
if (offset < buffer.Length)
{
switch (bitmapOp)
{
case BitmapOp.And:
buffer[offset] &= singlePage[xIndex];
break;
case BitmapOp.Or:
buffer[offset] |= singlePage[xIndex];
break;
case BitmapOp.Replace:
buffer[offset] = singlePage[xIndex];
break;
case BitmapOp.Xor:
buffer[offset] ^= singlePage[xIndex];
break;
}
}
}
}
}
}
public static byte GetPageCount(this Ssd1306 display)
{
return(( byte )(display.Height / 8));
}
public static void SendUGdash2832HSWEG02Startup(this Ssd1306 display)
{
display.SendCommandsInternal(UGdash2832HSWEG02SetupSequence);
}
