0x6d61726b
/
TextLCD
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Fork of
TextLCD
by 
Wim Huiskamp
Revision 43:7f31a3a5e648, committed 2017-04-30
- Comitter:
- 0x6d61726b
- Date:
- Sun Apr 30 16:05:28 2017 +0000
- Parent:
- 42:7f270955a6b1
- Commit message:
- display initialization for SSD1803 chipsets fixed
Changed in this revision
| TextLCD.cpp | Show annotated file Show diff for this revision Revisions of this file |
--- a/TextLCD.cpp Sun Apr 30 14:53:35 2017 +0000
+++ b/TextLCD.cpp Sun Apr 30 16:05:28 2017 +0000
@@ -574,35 +574,38 @@
break; // case ST7070 Controller
case SSD1803_3V3:
- // SSD1803 controller: Initialise Voltage booster for VLCD. VDD=3V3
+ // changes have been made according to the register description of SSD1803 Rev 2.0
+ // http://www.lcd-module.de/fileadmin/eng/pdf/zubehoer/ssd1803_2_0.pdf
+ // SSD1803 controller: Initialize Voltage booster for VLCD. VDD=3V3
// Note: supports 1,2, 3 or 4 lines
// case SSD1803_5V:
// SSD1803 controller: No Voltage booster for VLCD. VDD=5V
- // Initialise Display configuration
+ // Initialize Display configuration
switch (_type) {
case LCD8x1: //8x1 is a regular 1 line display
case LCD8x2B: //8x2D is a special case of 16x1
// case LCD12x1:
case LCD16x1:
case LCD24x1:
- _function = 0x00; // Set function 0 0 1 DL N DH RE(0) IS
- // Saved to allow switch between Instruction sets at later time
- // DL=0 4-bit Databus,
- // Note: 4 bit mode is ignored for native SPI and I2C devices
- // N=0 1 Line / 3 Line
- // DH=0 Double Height disable
- // IS=0
+ _function = 0x20; // Set function 0 0 1 DL N RE(0) DH REV
+ // Saved to allow switch between Instruction sets at later time
+ // DL=0 4-bit data bus,
+ // Note: 4 bit mode is ignored for native SPI and I2C devices
+ // N=0 1 Line / 3 Line
+ // DH=0 Double Height disable
+ // REV=0 Reverse off, special feature of SSD1803
- _function_1 = 0x02; // Set function, 0 0 1 DL N BE RE(1) REV
- // Saved to allow switch between Instruction sets at later time
- // DL=0 4-bit Databus,
- // Note: 4 bit mode is ignored for native SPI and I2C devices
- // N=0 1 Line / 3 Line
- // BE=0 Blink Enable off, special feature of SSD1803
- // REV=0 Reverse off, special feature of SSD1803
+ _function_1 = 0x24; // Set function, 0 0 1 DL N RE(1) BE 0
+ // Saved to allow switch between Instruction sets at later time
+ // DL=0 4-bit data bus,
+ // Note: 4 bit mode is ignored for native SPI and I2C devices
+ // N=0 1 Line / 3 Line
+ // BE=0 Blink Enable off, special feature of SSD1803
- _lines = 0x00; // Ext function set 0 0 0 0 1 FW BW NW
+ _lines = 0x08; // Ext function set 0 0 0 0 1 FW BW NW
+ // FW=0 6-dot font width off
+ // BW=0 Black/White inversion at cursor position off
// NW=0 1-Line LCD (N=0)
break;
@@ -611,46 +614,48 @@
case LCD16x3D: // Special mode for KS0078
// case LCD16x3D1: // Special mode for SSD1803
// case LCD20x3D: // Special mode for SSD1803
- _function = 0x00; // Set function 0 0 1 DL N DH RE(0) IS
- // Saved to allow switch between Instruction sets at later time
- // DL=0 4-bit Databus,
- // Note: 4 bit mode is ignored for native SPI and I2C devices
- // N=0 1 Line / 3 Line
- // DH=0 Double Height disable
- // IS=0
+ _function = 0x20; // Set function 0 0 1 DL N RE(0) DH REV
+ // Saved to allow switch between Instruction sets at later time
+ // DL=0 4-bit data bus,
+ // Note: 4 bit mode is ignored for native SPI and I2C devices
+ // N=0 1 Line / 3 Line
+ // DH=0 Double Height disable
+ // REV=0 Reverse off, special feature of SSD1803
- _function_1 = 0x02; // Set function, 0 0 1 DL N BE RE(1) REV
- // Saved to allow switch between Instruction sets at later time
- // DL=0 4-bit Databus,
- // Note: 4 bit mode is ignored for native SPI and I2C devices
- // N=0 1 Line / 3 Line
- // BE=0 Blink Enable off, special feature of SSD1803
- // REV=0 Reverse off, special feature of SSD1803
+ _function_1 = 0x24; // Set function, 0 0 1 DL N RE(1) BE 0
+ // Saved to allow switch between Instruction sets at later time
+ // DL=0 4-bit data bus,
+ // Note: 4 bit mode is ignored for native SPI and I2C devices
+ // N=0 1 Line / 3 Line
+ // BE=0 Blink Enable off, special feature of SSD1803
- _lines = 0x00; // Ext function set 0 0 0 0 1 FW BW NW
- // NW=1 3-Line LCD (N=0)
+ _lines = 0x08; // Ext function set 0 0 0 0 1 FW BW NW
+ // FW=0 6-dot font width off
+ // BW=0 Black/White inversion at cursor position off
+ // NW=0 1-Line LCD (N=0)
break;
// case LCD10x2D: // Special mode for SSD1803, 4-line mode but switch to double height font
case LCD10x4D: // Special mode for SSD1803
- case LCD20x4D: // Special mode for SSD1803
- _function = 0x08; // Set function 0 0 1 DL N DH RE(0) IS
- // Saved to allow switch between Instruction sets at later time
- // DL=0 4-bit Databus,
- // Note: 4 bit mode is ignored for native SPI and I2C devices
- // N=1 4 Line
- // DH=0 Double Height disable
- // IS=0
+ case LCD20x4D: // Special mode for SSD1803 (register description according to SSD1803 Rev 2.0)
+ _function = 0x28; // Set function 0 0 1 DL N RE(0) DH REV
+ // Saved to allow switch between Instruction sets at later time
+ // DL=0 4-bit data bus,
+ // Note: 4 bit mode is ignored for native SPI and I2C devices
+ // N=1 4 Line mode when NW=1
+ // DH=0 Double Height disable
+ // REV=0 Reverse off, special feature of SSD1803
- _function_1 = 0x0A; // Set function, 0 0 1 DL N BE RE(1) REV
+ _function_1 = 0x2C; // Set function, 0 0 1 DL N RE(1) BE 0
// Saved to allow switch between Instruction sets at later time
- // DL=0 4-bit Databus,
+ // DL=0 4-bit data bus,
// Note: 4 bit mode is ignored for native SPI and I2C devices
- // N=1 4 Line
+ // N=1 4 Line
// BE=0 Blink Enable off, special feature of SSD1803
- // REV=0 Reverse off, special feature of SSD1803
- _lines = 0x01; // Ext function set 0 0 0 0 1 FW BW NW
+ _lines = 0x09; // Ext function set 0 0 0 0 1 FW BW NW
+ // FW=0 6-dot font width off
+ // BW=0 Black/White inversion at cursor position off
// NW=1 4-Line LCD (N=1)
break;
@@ -660,27 +665,27 @@
break;
default:
- // All other LCD types are initialised as 2 Line displays (including LCD16x1C and LCD40x4)
- _function = 0x08; // Set function 0 0 1 DL N DH RE(0) IS
- // Saved to allow switch between Instruction sets at later time
- // DL=0 4-bit Databus,
- // Note: 4 bit mode is ignored for native SPI and I2C devices
- // N=1 2 line / 4 Line
- // DH=0 Double Height disable
- // RE=0
- // IS=0
-
- _function_1 = 0x0A; // Set function, 0 0 1 DL N BE RE(1) REV
- // Saved to allow switch between Instruction sets at later time
- // DL=0 4-bit Databus,
- // Note: 4 bit mode is ignored for native SPI and I2C devices
- // N=1 2 line / 4 Line
- // BE=0 Blink Enable off, special feature of SSD1803
- // RE=1
- // REV=0 Reverse off, special feature of SSD1803
+ // All other LCD types are Initialized as 2 Line displays (including LCD16x1C and LCD40x4)
+ _function = 0x28; // Set function 0 0 1 DL N RE(0) DH REV
+ // Saved to allow switch between Instruction sets at later time
+ // DL=0 4-bit data bus,
+ // Note: 4 bit mode is ignored for native SPI and I2C devices
+ // N=1 4 Line mode when NW=1
+ // DH=0 Double Height disable
+ // REV=0 Reverse off, special feature of SSD1803
+
+ _function_1 = 0x2C; // Set function, 0 0 1 DL N RE(1) BE 0
+ // Saved to allow switch between Instruction sets at later time
+ // DL=0 4-bit data bus,
+ // Note: 4 bit mode is ignored for native SPI and I2C devices
+ // N=1 2 line / 4 Line
+ // BE=0 Blink Enable off, special feature of SSD1803
- _lines = 0x00; // Ext function set 0 0 0 0 1 FW BW NW
+ _lines = 0x08; // Ext function set 0 0 0 0 1 FW BW NW
+ // FW=0 6-dot font width off
+ // BW=0 Black/White inversion at cursor position off
// NW=0 2-Line LCD (N=1)
+
break;
} // switch type