** Function name: drawChar ** Description: draw a unicode onto the screen ******************************************************

** Function name: drawCircle ** Description: Draw a circle outline *************************************************************

the methods an advanced controller may implement directly

** Function name: drawCircleHelper ** Description: Support function for circle drawing *****************************************

** Function name: drawEllipse ** Description: Draw a ellipse outline ***********************************************************

** Function name: drawFastHLine ** Description: draw a horizontal line *********************************************************

/

** Function name: drawFastVLine ** Description: draw a vertical line ***********************************************************

/

** Function name: drawFloat ** Descriptions: drawFloat, prints 7 non zero digits maximum ****************************************

** Function name: drawNumber ** Description: draw a long integer ***************************************************************

/

** Function name: drawRect ** Description: Draw a rectangle outline ************************************************************

** Function name: drawRoundRect ** Description: Draw a rounded corner rectangle outline ****************************************

** Function name: drawString (with or without user defined font) ** Description : draw string with padding if it is defined *****

** Function name: drawTriangle ** Description: Draw a triangle outline using 3 arbitrary points ********************************

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Attribute for a function only supported on ESP8266

============================== Timer Event ============================ */

** Function name: fillCircle ** Description: draw a filled circle **************************************************************