Michel2/New-LiquidCrystal-softwareheritage
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Corrected some indentation problems.

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Removed redundant _cols, _rows from child classes and moved them to parent virtual class.
closes #7 - Support for 16x4 LCDs and their peculiar addressing.
This commit is contained in:
FMC
2011-11-21 21:58:40 +01:00
parent c3d26bf98e
commit 43d60aa4b4
6 changed files with 87 additions and 79 deletions
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LCD.cpp
+13 -3
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@@ -46,7 +46,6 @@
// CLASS CONSTRUCTORS
// ---------------------------------------------------------------------------
// Constructor
LCD::LCD ()
{
@@ -72,14 +71,25 @@ void LCD::home()
void LCD::setCursor(uint8_t col, uint8_t row)
{
int row_offsets[] = { 0x00, 0x40, 0x14, 0x54 };
int row_offsetsDef[] = { 0x00, 0x40, 0x14, 0x54 }; // For regular LCDs
int row_offsetsLarge[] = { 0x00, 0x40, 0x10, 0x50 }; // For 16x4 LCDs
if ( row >= _numlines )
{
row = _numlines-1; // rows start at 0
}
command(LCD_SETDDRAMADDR | (col + row_offsets[row]));
// 16x4 LCDs have special memory map layout
// ----------------------------------------
if ( _cols == 16 && _numlines == 4 )
{
command(LCD_SETDDRAMADDR | (col + row_offsetsLarge[row]));
}
else
{
command(LCD_SETDDRAMADDR | (col + row_offsetsDef[row]));
}
}
// Turn the display on/off