Nathanaël Semhoun
A TextLCD interface for driving 4-bit HD44780-based LCDs.
Fork of
TextLCD
by 
Wim Huiskamp
Diff: TextLCD.cpp
- Revision:
- 31:ef31cd8a00d1
- Parent:
- 30:033048611c01
- Child:
- 32:59c4b8f648d4
--- a/TextLCD.cpp Sat Jun 28 14:27:32 2014 +0000
+++ b/TextLCD.cpp Sun Jun 29 14:55:50 2014 +0000
@@ -812,191 +812,6 @@
return 0x80 | getAddress(column, row);
}
-#if(0)
-// This is new method to return the memory address based on row, column and displaytype.
-//
-/** Return the memoryaddress of screen column and row location
- *
- * @param column The horizontal position from the left, indexed from 0
- * @param row The vertical position from the top, indexed from 0
- * @param return The memoryaddress of screen column and row location
- *
- * Note: some configurations are commented out because they have not yet been tested due to lack of hardware
- */
-int TextLCD_Base::getAddress(int column, int row) {
-
- switch (_type) {
- case LCD8x1:
-// case LCD12x1:
-// case LCD16x1B:
-// case LCD20x1:
- case LCD24x1:
-// case LCD40x1:
- return 0x00 + column;
-
- case LCD16x1:
- // LCD16x1 is a special layout of LCD8x2
- if (column<8)
- return 0x00 + column;
- else
- return 0x40 + (column - 8);
-
- case LCD8x2D:
- // LCD8x2B is a special layout of LCD16x1
- if (row==0)
- return 0x00 + column;
- else
- return 0x08 + column;
-
- case LCD8x2:
- case LCD12x2:
- case LCD16x2:
- case LCD20x2:
- case LCD24x2:
- case LCD40x2:
- return 0x00 + (row * 0x40) + column;
-
-// Not sure about this one, seems wrong.
-// Left in for compatibility with original library
- case LCD16x2B:
- return 0x00 + (row * 40) + column;
-
-
-// Special mode for ST7036
-// case LCD16x3:
-
-// Special mode for PCF2116
- case LCD12x3B:
- //Display bottom three rows of four
- switch (row) {
- case 0:
- return 0x20 + column;
- case 1:
- return 0x40 + column;
- case 2:
- return 0x60 + column;
- }
-
-#if(0)
- case LCD12x3C:
- //Display top three rows of four
- switch (row) {
- case 0:
- return 0x00 + column;
- case 1:
- return 0x20 + column;
- case 2:
- return 0x40 + column;
- }
-#endif
-
- case LCD12x4:
- switch (row) {
- case 0:
- return 0x00 + column;
- case 1:
- return 0x40 + column;
- case 2:
- return 0x0C + column;
- case 3:
- return 0x4C + column;
- }
-
-// Special mode for PCF2116 (and KS0078)
- case LCD12x4B:
- switch (row) {
- case 0:
- return 0x00 + column;
- case 1:
- return 0x20 + column;
- case 2:
- return 0x40 + column;
- case 3:
- return 0x60 + column;
- }
-
- case LCD16x4:
- switch (row) {
- case 0:
- return 0x00 + column;
- case 1:
- return 0x40 + column;
- case 2:
- return 0x10 + column;
- case 3:
- return 0x50 + column;
- }
-
- case LCD20x4:
- switch (row) {
- case 0:
- return 0x00 + column;
- case 1:
- return 0x40 + column;
- case 2:
- return 0x14 + column;
- case 3:
- return 0x54 + column;
- }
-
-// Special mode for KS0078
- case LCD24x4B:
- switch (row) {
- case 0:
- return 0x00 + column;
- case 1:
- return 0x20 + column;
- case 2:
- return 0x40 + column;
- case 3:
- return 0x60 + column;
- }
-
- case LCD40x4:
- // LCD40x4 is a special case since it has 2 controllers
- // Each controller is configured as 40x2
- if (row<2) {
- // Test to see if we need to switch between controllers
- if (_ctrl_idx != _LCDCtrl_0) {
-
- // Second LCD controller Cursor Off
- _setCursorAndDisplayMode(_currentMode, CurOff_BlkOff);
-
- // Select primary controller
- _ctrl_idx = _LCDCtrl_0;
-
- // Restore cursormode on primary LCD controller
- _setCursorAndDisplayMode(_currentMode, _currentCursor);
- }
-
- return 0x00 + (row * 0x40) + column;
- }
- else {
-
- // Test to see if we need to switch between controllers
- if (_ctrl_idx != _LCDCtrl_1) {
- // Primary LCD controller Cursor Off
- _setCursorAndDisplayMode(_currentMode, CurOff_BlkOff);
-
- // Select secondary controller
- _ctrl_idx = _LCDCtrl_1;
-
- // Restore cursormode on secondary LCD controller
- _setCursorAndDisplayMode(_currentMode, _currentCursor);
- }
-
- return 0x00 + ((row-2) * 0x40) + column;
- }
-
-// Should never get here.
- default:
- return 0x00;
- }
-}
-
-#else
-
-//Test of Addressing Mode encoded in LCDType
// This is new method to return the memory address based on row, column and displaytype.
//
@@ -1128,10 +943,6 @@
}
-#endif
-
-
-
/** Set the memoryaddress of screen column and row location
*
* @param column The horizontal position from the left, indexed from 0
@@ -1175,50 +986,7 @@
// Columns encoded in b7..b0
//return (_type & 0xFF);
- return _nr_cols;
-
-#if(0)
- switch (_type) {
- case LCD8x1:
- case LCD8x2:
- case LCD8x2B:
- return 8;
-
- case LCD12x2:
- case LCD12x3B:
-// case LCD12x3C:
- case LCD12x4:
- case LCD12x4B:
- return 12;
-
- case LCD16x1:
- case LCD16x2:
- case LCD16x2B:
-// case LCD16x3:
- case LCD16x4:
- return 16;
-
-// case LCD20x1:
- case LCD20x2:
- case LCD20x4:
- return 20;
-
- case LCD24x1:
- case LCD24x2:
-// case LCD24x3B:
- case LCD24x4B:
- return 24;
-
-// case LCD40x1:
- case LCD40x2:
- case LCD40x4:
- return 40;
-
-// Should never get here.
- default:
- return 0;
- }
-#endif
+ return _nr_cols;
}
/** Return the number of rows
@@ -1232,45 +1000,6 @@
// Rows encoded in b15..b8
//return ((_type >> 8) & 0xFF);
return _nr_rows;
-
-#if(0)
- switch (_type) {
- case LCD8x1:
- case LCD16x1:
-// case LCD20x1:
- case LCD24x1:
-// case LCD40x1:
- return 1;
-
- case LCD8x2:
- case LCD8x2B:
- case LCD12x2:
- case LCD16x2:
- case LCD16x2B:
- case LCD20x2:
- case LCD24x2:
- case LCD40x2:
- return 2;
-
- case LCD12x3B:
-// case LCD12x3C:
-// case LCD16x3:
-// case LCD24x3B:
- return 3;
-
- case LCD12x4:
- case LCD12x4B:
- case LCD16x4:
- case LCD20x4:
- case LCD24x4B:
- case LCD40x4:
- return 4;
-
-// Should never get here.
- default:
- return 0;
- }
-#endif
}
/** Set the Cursormode
@@ -1283,8 +1012,7 @@
_currentCursor = cursorMode;
// Configure only current LCD controller
- _setCursorAndDisplayMode(_currentMode, _currentCursor);
-
+ _setCursorAndDisplayMode(_currentMode, _currentCursor);
}
/** Set the Displaymode
@@ -1748,21 +1476,6 @@
_bl = NULL; //Construct dummy pin
}
-#if(0)
- //Sanity check
- switch (_ctrl) {
- case ST7032_3V3:
- case ST7032_5V:
- case PCF21XX_3V3:
-// case PCF21XX_5V:
- _init();
- break;
-
- default:
- error("Error: LCD Controller type does not support native I2C interface\n\r");
- }
-#endif
-
//Sanity check
if (_ctrl & LCD_C_I2C) {
_init();
@@ -2013,20 +1726,6 @@
_bl = NULL; //Construct dummy pin
}
-#if(0)
- //Sanity check
- switch (_ctrl) {
- case ST7032_3V3:
- case ST7032_5V:
- case WS0010:
- _init();
- break;
-
- default:
- error("Error: LCD Controller type does not support native SPI4 interface\n\r");
- }
-#endif
-
//Sanity check
if (_ctrl & LCD_C_SPI4) {
_init();