Diff: KS0713.cpp
- Revision:
- 0:1cfbf6b8d116
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/KS0713.cpp Fri Nov 19 23:48:18 2010 +0000
@@ -0,0 +1,237 @@
+#include "gLCD.h"
+#include "mbed.h"
+
+gLCD::gLCD(PinName rst, PinName rs, PinName e, PinName d0, PinName d1,
+ PinName d2, PinName d3, PinName d4, PinName d5, PinName d6, PinName d7, PinName led)
+ : _rst(rst), _rs(rs), _e(e), _d(d0, d1, d2, d3, d4, d5, d6, d7), _led(led){
+
+ _rst = 0; // Put display driver into Reset mode
+ _e = 1;
+ _rs = 0; // Put display controller in command mode
+
+ wait(0.015); // Wait 15ms to ensure powered up
+
+ _rst = 1; // Switch reset off
+
+
+ /* ADC Select
+ Horizontal direction
+ 0xA0 = SEG1->SEG132 (left to right)
+ 0xA1 = SEG132->SEG1 (right to left) */
+ writeCommand(0xA0); // 0xA0 = SEG1->SEG132 (left to right)
+
+ /* SHL Select
+ Vertical direction
+ 0xC0 = COM1->COM64 (top to bottom)
+ 0xC8 = COM64->COM1 (bottom to top) */
+ writeCommand(0xC0); // 0xC0 = COM1->COM64
+
+ /* LCD bias select
+ Screen in use: Displaytech 64128E
+ Display duty ratio: 1/65
+ Display bias: 1/9
+ 0xA2 = 1/5 or 1/6 or 1/7 bias
+ 0xA3 = 1/6 or 1/8 or 1/9 bias
+ Note: at 1/6 bias use 0xA2 for 1/49 duty ratio
+ or 0xA3 for 1/33 duty ratio */
+ writeCommand(0xA3); // 0xA3 = 1/9 bias
+
+ /*Power control
+ Displaytech screen uses built-in power circuits
+ Switch on in order as specified in data sheet
+ wait 1ms between each command
+ 1st - Voltage converter ON = 0x2C
+ 2nd - Voltage regulator ON = 0x2E
+ 3rd - Voltage follower ON = 0x2F */
+ writeCommand(0x2C); //0x2C = Voltage converter ON
+ wait(0.001);
+ writeCommand(0x2E); //0x2E = Voltage regulator ON
+ wait(0.001);
+ writeCommand(0x2F); //0x2F = Voltage follower ON
+
+ /*Regulator resistor select
+ Sets the internal resistance ratio used in the internal voltage regulator
+ Refer to datasheet p.42
+ This works as a corse contrast control
+ 0x20 = 1.9
+ 0x21 = 2.19
+ 0x22 = 2.55
+ 0x23 = 3.02
+ 0x24 = 3.61
+ 0x25 = 4.35
+ 0x26 = 5.29
+ 0x27 = 6.48 */
+ writeCommand(0x26);
+
+ /*Set reference voltage register
+ Used as a fine contrast control
+ 0x81 = Enter voltage register set mode
+ 0x00 to 0x3F = 0 to 63 */
+ writeCommand(0x81); //0x81 = Enter voltage register set mode
+ writeCommand(0x46); //0x30 = Set ref voltage to 30
+
+ /*Initial display line
+ Specify DDRAM line for COM1
+ 0x40 + display line */
+ writeCommand(0x40); //Set initial line to 0
+
+ /*Set page address
+ Sets the initial page address to write to
+ 0xB0 + page address 0 to 8 */
+ writeCommand(0xB0); //Initial page set to 0
+
+ /*Set column address
+ Sets the initial column to write to
+ for LSB (b3-b0) 0x00 + first nibble
+ for MSB (b7-b4) 0x10 + second nibble
+ 0x00 to 0x83 = column 0 to 131 */
+ writeCommand(0x00); //Sets LSB to 0
+ writeCommand(0x10); //Sets MSB to 0 - column is now set to 0
+
+ /*Reverse display
+ Selects either a normal display or a reverse display
+ 0xA6 = normal
+ 0xA7 = reverse */
+ writeCommand(0xA6); //Sets display to normal
+
+ /*Set static indicator
+ Sets up a static indicator on the display
+ See datasheet p.42
+ This is a 2 instruction cycle
+ 0xAC = static indicator ON
+ 0xAD = static indicator OFF
+ Next instruction to set indicator type:
+ 0x00 = OFF
+ 0x01 = ON - 1 second blinking
+ 0x02 = ON - 0.5 second blinking
+ 0x03 = ON - always ON */
+ writeCommand(0xAD); //Static indicator OFF
+ writeCommand(0x00); //OFF - 0.5 second blinking
+
+ /*Display ON/OFF
+ Switched the display to on or off
+ 0xAE = Display OFF
+ 0xAF = Display ON */
+ writeCommand(0xAF);
+
+
+
+
+
+
+}
+
+
+
+void gLCD::writeCommand(int command)
+ {
+ _rs = 0;
+ wait(0.000040f);
+ writeByte(command);
+ }
+
+void gLCD::writeData(int data)
+ {
+ _rs = 1;
+ writeByte(data);
+ }
+
+void gLCD::writeByte(int value)
+ {
+ _led = 1;
+ _e = 1;
+ wait(0.000040f); //Allow time for display
+ _d = value;
+ wait(0.000040f); //Allow time for display
+ _e = 0; //Load value to display - display driver registers on falling edge of e
+ _led = 0;
+
+ }
+
+void gLCD::locate(int page, int column)
+ {
+ _column = column;
+ _page = page;
+ writeCommand(0xB0 + page);
+ writeCommand(0x00 + (column & 0x0f));
+ writeCommand(0x10 + ((column >> 4) & 0x0f));
+ }
+
+void gLCD::locateChar(int page, int column)
+ {
+ column = ((column*6)+1);
+ _column = column;
+ _page = page;
+ writeCommand(0xB0 + page);
+ writeCommand(0x00 + (column & 0x0f));
+ writeCommand(0x10 + ((column >> 4) & 0x0f));
+ }
+
+void gLCD::clearScreen()
+ {
+ for(int a = 0; a < 8; a++)
+ {
+ locate(a,0);
+ for(int b = 0; b <128; b++)
+ {
+ writeData(0x00);
+ }
+ }
+ locate(0,0);
+ }
+
+void gLCD::writeChar5x8(int p, int col, int c)
+ {
+ const int *ptrFont5x8 = font5x8;
+ locate(p,col);
+ ptrFont5x8+= ((c-32)*6);
+
+ for(int a=0; a < 6; a++)
+ {
+
+ writeData(*ptrFont5x8);
+
+ ptrFont5x8++;
+ }
+
+ }
+
+
+
+int gLCD::_putc(int value)
+ {
+
+
+
+ writeChar5x8(_page, _column, value);
+ _column+=6;
+
+
+ return value;
+}
+
+int gLCD::_getc() {
+ return -1;
+}
+
+
+void gLCD::writeBitmap(const int *ptrBitmap)
+ {
+
+
+
+ for(int a=0; a < 8; a++)
+ {
+ locate(a,0);
+
+ for(int b=0; b < 128; b++)
+ {
+ writeData(*ptrBitmap);
+ ptrBitmap+=8;
+
+
+ }
+ ptrBitmap-=1023;
+ }
+
+ }
\ No newline at end of file
Tony Beck