FlowLogicExplanations

FlowLCD Logic Explanations

The scenarios below detail the FlowLCD.drawString() calls with their corresponding screen outputs after each keypress if any.

The assumption is for an 18 character by 8 line LCD display. If the dimensions are changed, FlowLCD will adjust accordingly.

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1 Line, No Flow

This mimics the LCD.drawString(?,0,0) call:

FlowLCD.drawString("Just one line");

	1    1 1 0....5....0....5.7
0 1 2 3 4 5 6 7	Just one line

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2 Lines, No Flow

This mimics two LCD.drawString() calls to (0,0) and (0,1):

FlowLCD.drawString("This is line 1\nThis is line 2");  // use \n for line breaks

	1    1 1 0....5....0....5.7
0 1 2 3 4 5 6 7	This is line 1 This is line 2

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2 Lines with Flow

FlowLCD.drawString("This is line 1 This is line 2");  // no \n

	1    1 1 0....5....0....5.7
0 1 2 3 4 5 6 7	This is line 1 This is line 2

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8 Lines with Flow, No Scrolling

FlowLCD.drawString("This is a very long paragraph, for some open-minded programmers, "
                 + "that will wrap around to eight lines. Cool, huh?");

	1    1 1 0....5....0....5.7
0 1 2 3 4 5 6 7	This is a very long paragraph, for some open- minded programmers, that will wrap around to eight lines. Cool, huh?

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10 Lines with Flow AND Scrolling

FlowLCD.drawString("First Line\nLine 2\nLine 3\nLine 4\nLine 5\nLine 6\nLine 7\nLine 8\nLine 9\nLAST LINE");

	1    1 1 0....5....0....5.7
0 1 2 3 4 5 6 7	First Line Line 2 Line 3 Line 4 Line 5 Line 6 Line 7        \/	« Initial screen

	1    1 1 0....5....0....5.7
0 1 2 3 4 5 6 7	Line 2 Line 3 Line 4 Line 5 Line 6 Line 7 Line 8        \/	« After first DOWN press

	1    1 1 0....5....0....5.7
0 1 2 3 4 5 6 7	Line 3 Line 4 Line 5 Line 6 Line 7 Line 8 Line 9 LAST LINE	« After first DOWN press