Sai Arunesh V S
/
TextLCD
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Diff: TextLCD.cpp
- Revision:
- 30:033048611c01
- Parent:
- 29:a3663151aa65
- Child:
- 31:ef31cd8a00d1
--- a/TextLCD.cpp Tue Jun 17 17:41:47 2014 +0000
+++ b/TextLCD.cpp Sat Jun 28 14:27:32 2014 +0000
@@ -10,7 +10,7 @@
* 2014, v08: WH, Refactored in Base and Derived Classes to deal with mbed lib change regarding 'NC' defined pins
* 2014, v09: WH/EO, Added Class for Native SPI controllers such as ST7032
* 2014, v10: WH, Added Class for Native I2C controllers such as ST7032i, Added support for MCP23008 I2C portexpander, Added support for Adafruit module
- * 2014, v11: WH, Added support for native I2C controllers such as PCF21XX, improved the _initCtrl() method to deal with differences between all supported controllers
+ * 2014, v11: WH, Added support for native I2C controllers such as PCF21XX, Improved the _initCtrl() method to deal with differences between all supported controllers
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
@@ -34,17 +34,81 @@
#include "TextLCD.h"
#include "mbed.h"
-
-DigitalOut led1(LED1);
-DigitalOut led2(LED2);
+//For Testing only
+//DigitalOut led1(LED1);
+//DigitalOut led2(LED2);
+// led2=!led2;
+/** Some sample User Defined Chars 5x7 dots */
+const char udc_ae[] = {0x00, 0x00, 0x1B, 0x05, 0x1F, 0x14, 0x1F, 0x00}; //æ
+const char udc_0e[] = {0x00, 0x00, 0x0E, 0x13, 0x15, 0x19, 0x0E, 0x00}; //ø
+const char udc_ao[] = {0x0E, 0x0A, 0x0E, 0x01, 0x0F, 0x11, 0x0F, 0x00}; //å
+const char udc_AE[] = {0x0F, 0x14, 0x14, 0x1F, 0x14, 0x14, 0x17, 0x00}; //Æ
+const char udc_0E[] = {0x0E, 0x13, 0x15, 0x15, 0x15, 0x19, 0x0E, 0x00}; //Ø
+const char udc_Ao[] = {0x0E, 0x0A, 0x0E, 0x11, 0x1F, 0x11, 0x11, 0x00}; //Å
+const char udc_PO[] = {0x04, 0x0A, 0x0A, 0x1F, 0x1B, 0x1B, 0x1F, 0x00}; //Padlock Open
+const char udc_PC[] = {0x1C, 0x10, 0x08, 0x1F, 0x1B, 0x1B, 0x1F, 0x00}; //Padlock Closed
+
+const char udc_0[] = {0x18, 0x14, 0x12, 0x11, 0x12, 0x14, 0x18, 0x00}; // |>
+const char udc_1[] = {0x03, 0x05, 0x09, 0x11, 0x09, 0x05, 0x03, 0x00}; // <|
+const char udc_2[] = {0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x00}; // |
+const char udc_3[] = {0x14, 0x14, 0x14, 0x14, 0x14, 0x14, 0x14, 0x00}; // ||
+const char udc_4[] = {0x15, 0x15, 0x15, 0x15, 0x15, 0x15, 0x15, 0x00}; // |||
+const char udc_5[] = {0x00, 0x1f, 0x00, 0x1f, 0x00, 0x1f, 0x00, 0x00}; // =
+const char udc_6[] = {0x15, 0x0a, 0x15, 0x0a, 0x15, 0x0a, 0x15, 0x00}; // checkerboard
+const char udc_7[] = {0x10, 0x08, 0x04, 0x02, 0x01, 0x00, 0x10, 0x00}; // \
+
+const char udc_degr[] = {0x06, 0x09, 0x09, 0x06, 0x00, 0x00, 0x00, 0x00}; // Degree symbol
+
+const char udc_TM_T[] = {0x1F, 0x04, 0x04, 0x04, 0x00, 0x00, 0x00, 0x00}; // Trademark T
+const char udc_TM_M[] = {0x11, 0x1B, 0x15, 0x11, 0x00, 0x00, 0x00, 0x00}; // Trademark M
+
+//const char udc_Bat_Hi[] = {0x0E, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x00}; // Battery Full
+//const char udc_Bat_Ha[] = {0x0E, 0x11, 0x13, 0x17, 0x1F, 0x1F, 0x1F, 0x00}; // Battery Half
+//const char udc_Bat_Lo[] = {0x0E, 0x11, 0x11, 0x11, 0x11, 0x11, 0x1F, 0x00}; // Battery Low
+const char udc_Bat_Hi[] = {0x0E, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x00}; // Battery Full
+const char udc_Bat_Ha[] = {0x0E, 0x11, 0x11, 0x1F, 0x1F, 0x1F, 0x1F, 0x00}; // Battery Half
+const char udc_Bat_Lo[] = {0x0E, 0x11, 0x11, 0x11, 0x11, 0x1F, 0x1F, 0x00}; // Battery Low
+const char udc_AC[] = {0x0A, 0x0A, 0x1F, 0x11, 0x0E, 0x04, 0x04, 0x00}; // AC Power
+
+//const char udc_smiley[] = {0x00, 0x0A, 0x00, 0x04, 0x11, 0x0E, 0x00, 0x00}; // Smiley
+//const char udc_droopy[] = {0x00, 0x0A, 0x00, 0x04, 0x00, 0x0E, 0x11, 0x00}; // Droopey
+//const char udc_note[] = {0x01, 0x03, 0x05, 0x09, 0x0B, 0x1B, 0x18, 0x00}; // Note
+
+//const char udc_bar_1[] = {0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x00}; // Bar 1
+//const char udc_bar_2[] = {0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x00}; // Bar 11
+//const char udc_bar_3[] = {0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x00}; // Bar 111
+//const char udc_bar_4[] = {0x17, 0x17, 0x17, 0x17, 0x17, 0x17, 0x17, 0x00}; // Bar 1111
+//const char udc_bar_5[] = {0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x00}; // Bar 11111
+
+//const char udc_ch_1[] = {0x1f, 0x00, 0x1f, 0x00, 0x1f, 0x00, 0x1f, 0x00}; // Hor bars 4
+//const char udc_ch_2[] = {0x00, 0x1f, 0x00, 0x1f, 0x00, 0x1f, 0x00, 0x1f}; // Hor bars 4 (inverted)
+//const char udc_ch_3[] = {0x15, 0x15, 0x15, 0x15, 0x15, 0x15, 0x15, 0x15}; // Ver bars 3
+//const char udc_ch_4[] = {0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a}; // Ver bars 3 (inverted)
+//const char udc_ch_yr[] = {0x08, 0x0f, 0x12, 0x0f, 0x0a, 0x1f, 0x02, 0x02}; // Year (kana)
+//const char udc_ch_mo[] = {0x0f, 0x09, 0x0f, 0x09, 0x0f, 0x09, 0x09, 0x13}; // Month (kana)
+//const char udc_ch_dy[] = {0x1f, 0x11, 0x11, 0x1f, 0x11, 0x11, 0x11, 0x1F}; // Day (kana)
+//const char udc_ch_mi[] = {0x0C, 0x0a, 0x11, 0x1f, 0x09, 0x09, 0x09, 0x13}; // minute (kana)
+
+
/** Create a TextLCD_Base interface
*
* @param type Sets the panel size/addressing mode (default = LCD16x2)
* @param ctrl LCD controller (default = HD44780)
*/
TextLCD_Base::TextLCD_Base(LCDType type, LCDCtrl ctrl) : _type(type), _ctrl(ctrl) {
+
+ // Extract LCDType data
+
+ // Columns encoded in b7..b0
+ _nr_cols = (_type & 0xFF);
+
+ // Rows encoded in b15..b8
+ _nr_rows = ((_type >> 8) & 0xFF);
+
+ // Addressing mode encoded in b19..b16
+ _addr_mode = _type & LCD_T_ADR_MSK;
}
@@ -55,25 +119,24 @@
// Select and configure second LCD controller when needed
if(_type==LCD40x4) {
- _ctrl_idx=_LCDCtrl_1; // Select 2nd controller
-
- _initCtrl(); // Init 2nd controller
-
+ _ctrl_idx=_LCDCtrl_1; // Select 2nd controller
+ _initCtrl(); // Init 2nd controller
}
// Select and configure primary LCD controller
_ctrl_idx=_LCDCtrl_0; // Select primary controller
-
_initCtrl(); // Init primary controller
// Reset Cursor location
_row=0;
- _column=0;
+ _column=0;
+
}
/** Init the LCD controller
* 4-bit mode, number of lines, fonttype, no cursor etc
- *
+ *
+ * Note: some configurations are commented out because they have not yet been tested due to lack of hardware
*/
void TextLCD_Base::_initCtrl() {
@@ -102,52 +165,65 @@
case LCD8x2B: //8x2B is a special case of 16x1
// case LCD12x1:
case LCD16x1:
+// case LCD20x1:
case LCD24x1:
-//@TODO check config
- _writeCommand(0x20); // Function set 001 DL N F - -
- // DL=0 (4 bits bus)
- // N=0 (1 line)
- // F=0 (5x7 dots font)
+ _writeCommand(0x20); // Function set 001 DL N RE(0) DH REV
+ // DL=0 (4 bits bus)
+ // N=0 (1 line)
+ // RE=0 (Dis. Extended Regs, special mode for KS0078)
+ // DH=0 (Disp shift=disable, special mode for KS0078)
+ // REV=0 (Reverse=Normal, special mode for KS0078)
+
+
+
break;
- case LCD24x4B:
- // Special mode for KS0078
- _writeCommand(0x2A); // Function set 001 DL N RE DH REV
+// case LCD12x3D: // Special mode for KS0078
+// case LCD12x3D1: // Special mode for KS0078
+// case LCD12x4D: // Special mode for KS0078
+// case LCD16x3D:
+// case LCD16x4D:
+// case LCD24x3D: // Special mode for KS0078
+// case LCD24x3D1: // Special mode for KS0078
+ case LCD24x4D: // Special mode for KS0078
+
+ _writeCommand(0x2A); // Function set 001 DL N RE(0) DH REV
// DL=0 (4 bits bus)
- // N=1 (Dont care for KS0078)
+ // N=1 (Dont care for KS0078 in 4-line mode)
// RE=0 (Dis. Extended Regs, special mode for KS0078)
- // DH=1 (Disp shift, special mode for KS0078)
- // REV=0 (Reverse, special mode for KS0078)
+ // DH=1 (Disp shift=enable, special mode for KS0078)
+ // REV=0 (Reverse=Normal, special mode for KS0078)
- _writeCommand(0x2E); // Function set 001 DL N RE DH REV
+ _writeCommand(0x2E); // Function set 001 DL N RE(1) BE 0
// DL=0 (4 bits bus)
- // N=1 (Dont care for KS0078)
+ // N=1 (Dont care for KS0078 in 4-line mode)
// RE=1 (Ena Extended Regs, special mode for KS0078)
- // DH=1 (Disp shift, special mode for KS0078)
- // REV=0 (Reverse, special mode for KS0078)
+ // BE=1 (Blink Enable, CG/SEG RAM, special mode for KS0078)
+ // X=0 (Reverse, special mode for KS0078)
_writeCommand(0x09); // Ext Function set 0000 1 FW BW NW
// FW=0 (5-dot font, special mode for KS0078)
// BW=0 (Cur BW invert disable, special mode for KS0078)
// NW=1 (4 Line, special mode for KS0078)
- _writeCommand(0x2A); // Function set 001 DL N RE DH REV
+ _writeCommand(0x2A); // Function set 001 DL N RE(0) DH REV
// DL=0 (4 bits bus)
- // N=1 (Dont care for KS0078)
+ // N=1 (Dont care for KS0078 in 4 line mode)
// RE=0 (Dis. Extended Regs, special mode for KS0078)
- // DH=1 (Disp shift, special mode for KS0078)
- // REV=0 (Reverse, special mode for KS0078)
-
- // All other LCD types are initialised as 2 Line displays (including LCD40x4)
+ // DH=1 (Disp shift enable, special mode for KS0078)
+ // REV=0 (Reverse normal, special mode for KS0078)
+ break;
+
default:
-//@TODO check config
- _writeCommand(0x28); // Function set 001 DL N F - -
- // DL=0 (4 bits bus)
- // Note: 4 bit mode is ignored for native SPI and I2C devices
- // N=1 (2 lines)
- // F=0 (5x7 dots font, only option for 2 line display)
- // - (Don't care)
-
+ // All other LCD types are initialised as 2 Line displays (including LCD16x1C and LCD40x4)
+ _writeCommand(0x28); // Function set 001 DL N RE(0) DH REV
+ // DL=0 (4 bits bus)
+ // Note: 4 bit mode is ignored for native SPI and I2C devices
+ // N=1 (2 lines)
+ // RE=0 (Dis. Extended Regs, special mode for KS0078)
+ // DH=0 (Disp shift=disable, special mode for KS0078)
+ // REV=0 (Reverse=Normal, special mode for KS0078)
+
break;
} // switch type
@@ -162,9 +238,8 @@
case LCD8x2B: //8x2B is a special case of 16x1
// case LCD12x1:
case LCD16x1:
+// case LCD20x1:
case LCD24x1:
-
-// _writeCommand(0x31); //FUNCTION SET 8 bit,N=0 1-line display mode,5*7dot, Select Instruction Set = 1
_writeCommand(0x21); //FUNCTION SET 4 bit, N=0 1-line display mode, 5*7dot, Select Instruction Set = 1
//Note: 4 bit mode is ignored for native SPI and I2C devices
@@ -178,16 +253,19 @@
_writeCommand(0x6C); //Follower control
wait_ms(10); // Wait 10ms to ensure powered up
-// _writeCommand(0x30); //FUNCTION SET 8 bit,N=0 1-line display mode,5*7dot, Return to Instruction Set = 0
_writeCommand(0x20); //FUNCTION SET 4 bit, N=0 1-line display mode, 5*7dot, Return to Instruction Set = 0
//Note: 4 bit mode is ignored for native SPI and I2C devices
+ break;
+ case LCD12x3D: // Special mode for PCF2116
+ case LCD12x3D1: // Special mode for PCF2116
+ case LCD12x4D: // Special mode for PCF2116
+ case LCD24x4D: // Special mode for KS0078
+ error("Error: LCD Controller type does not support this Display type\n\r");
break;
default:
// All other LCD types are initialised as 2 Line displays
-
-// _writeCommand(0x39); //FUNCTION SET 8 bit,N=1 2-line display mode,5*7dot, Select Instruction Set = 1
_writeCommand(0x29); //FUNCTION SET 4 bit, N=1 2-line display mode, 5*7dot, Select Instruction Set = 1
//Note: 4 bit mode is ignored for native SPI and I2C devices
@@ -201,14 +279,12 @@
_writeCommand(0x6C); //Follower control
wait_ms(10); // Wait 10ms to ensure powered up
-// _writeCommand(0x38); //FUNCTION SET 8 bit,N=1 2-line display mode,5*7dot, Return to Instruction Set = 0
_writeCommand(0x28); //FUNCTION SET 4 bit, N=1 2-line display mode, 5*7dot, Return to Instruction Set = 0
//Note: 4 bit mode is ignored for native SPI and I2C devices
} // switch type
break; // case ST7032_3V3 Controller
-
case ST7032_5V:
// ST7032 controller: Disable Voltage booster for VLCD. VDD=5V
@@ -218,9 +294,8 @@
case LCD8x2B: //8x2B is a special case of 16x1
// case LCD12x1:
case LCD16x1:
+// case LCD20x1:
case LCD24x1:
-
-// _writeCommand(0x31); //FUNCTION SET 8 bit,N=0 1-line display mode,5*7dot, Select Instruction Set = 1
_writeCommand(0x21); //FUNCTION SET 4 bit, N=0 1-line display mode, 5*7dot, Select Instruction Set = 1
//Note: 4 bit mode is ignored for native SPI and I2C devices
@@ -234,16 +309,19 @@
_writeCommand(0x6C); //Follower control
wait_ms(10); // Wait 10ms to ensure powered up
-// _writeCommand(0x30); //FUNCTION SET 8 bit,N=0 1-line display mode,5*7dot, Return to Instruction Set = 0
_writeCommand(0x20); //FUNCTION SET 4 bit, N=0 1-line display mode, 5*7dot, Return to Instruction Set = 0
//Note: 4 bit mode is ignored for native SPI and I2C devices
+ break;
+ case LCD12x3D: // Special mode for PCF2116
+ case LCD12x3D1: // Special mode for PCF2116
+ case LCD12x4D: // Special mode for PCF2116
+ case LCD24x4D: // Special mode for KS0078
+ error("Error: LCD Controller type does not support this Display type\n\r");
break;
default:
// All other LCD types are initialised as 2 Line displays
-
-// _writeCommand(0x39); //FUNCTION SET 8 bit,N=1 2-line display mode,5*7dot, Select Instruction Set = 1
_writeCommand(0x29); //FUNCTION SET 4 bit, N=1 2-line display mode, 5*7dot, Select Instruction Set = 1
//Note: 4 bit mode is ignored for native SPI and I2C devices
@@ -257,7 +335,6 @@
_writeCommand(0x6C); //Follower control
wait_ms(10); // Wait 10ms to ensure powered up
-// _writeCommand(0x38); //FUNCTION SET 8 bit,N=1 2-line display mode,5*7dot, Return to Instruction Set = 0
_writeCommand(0x28); //FUNCTION SET 4 bit, N=1 2-line display mode, 5*7dot, Return to Instruction Set = 0
//Note: 4 bit mode is ignored for native SPI and I2C devices
} // switch type
@@ -271,7 +348,7 @@
// Initialise Display configuration
switch (_type) {
case LCD8x1: //8x1 is a regular 1 line display
- case LCD8x2B: //8x2B is a special case of 16x1
+ case LCD8x2B: //8x2D is a special case of 16x1
// case LCD12x1:
case LCD16x1:
case LCD24x1:
@@ -307,8 +384,16 @@
wait_ms(50);
break;
#endif
+
+ case LCD12x3D: // Special mode for PCF2116
+ case LCD12x3D1: // Special mode for PCF2116
+ case LCD12x4D: // Special mode for PCF2116
+ case LCD24x4D: // Special mode for KS0078
+ error("Error: LCD Controller type does not support this Display type\n\r");
+ break;
+
default:
- // All other LCD types are initialised as 2 Line displays
+ // All other LCD types are initialised as 2 Line displays (including LCD16x1C and LCD40x4)
_writeCommand(0x29); // 4-bit Databus, N=1 2 Line, DH=0 5x7font, IS2,IS1 = 01 Select Instruction Set = 1
wait_ms(30); // > 26,3ms
_writeCommand(0x14); // Bias: 1/5, 2-Lines LCD
@@ -326,61 +411,118 @@
break; // case ST7036 Controller
- case PCF21XX_3V3:
- // PCF21XX controller: Initialise Voltage booster for VLCD. VDD=3V3
-
+ case PCF2113_3V3:
+ // PCF2113 controller: Initialise Voltage booster for VLCD. VDD=3V3
+ // Note1: The PCF21XX family of controllers has several types that dont have an onboard voltage generator for V-LCD.
+ // You must supply this LCD voltage externally and not enable VGen.
+ // Note2: The early versions of PCF2116 controllers (eg PCF2116C) can not generate sufficiently negative voltage for the LCD at a VDD of 3V3.
+ // You must supply this voltage externally and not enable VGen or you must use a higher VDD (e.g. 5V) and enable VGen.
+ // More recent versions of the controller (eg PCF2116K) have an improved VGen that will work with 3V3.
+ // Note3: See datasheet, members of the PCF21XX family support different numbers of rows/columns. Not all can support 3 or 4 rows.
+ // Note4: See datasheet, you can also disable VGen by connecting Vo to VDD. VLCD will then be used directly as LCD voltage.
+ // Note5: PCF2113 is different wrt to VLCD generator !
+ // Note6: See datasheet, the PCF21XX-C and PCF21XX-K use a non-standard character set. This may result is strange text when not corrected..
+
// Initialise Display configuration
switch (_type) {
- case LCD8x1: //8x1 is a regular 1 line display
- case LCD8x2B: //8x2B is a special case of 16x1
// case LCD12x1:
- case LCD16x1:
case LCD24x1:
- _writeCommand(0x22); //FUNCTION SET 4 bit, N=0/M=0 1-line/24 chars display mode, G=1 Booster on
+ _writeCommand(0x21); //FUNCTION SET 4 bit, M=0 1-line/24 chars display mode, extended IS
+ //Note: 4 bit mode is ignored for I2C mode
+ _writeCommand(0x9F); //Set VLCD A : VGen for Chars and Icons
+ _writeCommand(0xDF); //Set VLCD B : VGen for Icons Only
+ _writeCommand(0x20); //FUNCTION SET 4 bit, M=0 1-line/24 chars display mode
+// _writeCommand(0x24); //FUNCTION SET 4 bit, M=1 2-line/12 chars display mode, standard IS
+
+ wait_ms(10); // Wait 10ms to ensure powered up
+ break;
+
+//Tested OK for PCF2113
+//Note: PCF2113 is different wrt to VLCD generator !
+ case LCD12x2:
+ _writeCommand(0x21); //FUNCTION SET 4 bit, M=0 1-line/24 chars display mode, extended IS
+ //Note: 4 bit mode is ignored for I2C mode
+ _writeCommand(0x9F); //Set VLCD A : VGen for Chars and Icons
+ _writeCommand(0xDF); //Set VLCD B : VGen for Icons Only
+// _writeCommand(0x20); //FUNCTION SET 4 bit, M=0 1-line/24 chars display mode
+ _writeCommand(0x24); //FUNCTION SET 4 bit, M=1 2-line/12 chars display mode, standard IS
+
+ wait_ms(10); // Wait 10ms to ensure powered up
+ break;
+
+ default:
+ error("Error: LCD Controller type does not support this Display type\n\r");
+ break;
+
+ } // switch type
+
+ break; // case PCF2113_3V3 Controller
+
+
+
+ case PCF2116_3V3:
+ // PCF2116 controller: Initialise Voltage booster for VLCD. VDD=3V3
+ // Note1: The PCF21XX family of controllers has several types that dont have an onboard voltage generator for V-LCD.
+ // You must supply this LCD voltage externally and not enable VGen.
+ // Note2: The early versions of PCF2116 controllers (eg PCF2116C) can not generate sufficiently negative voltage for the LCD at a VDD of 3V3.
+ // You must supply this voltage externally and not enable VGen or you must use a higher VDD (e.g. 5V) and enable VGen.
+ // More recent versions of the controller (eg PCF2116K) have an improved VGen that will work with 3V3.
+ // Note3: See datasheet, members of the PCF21XX family support different numbers of rows/columns. Not all can support 3 or 4 rows.
+ // Note4: See datasheet, you can also disable VGen by connecting Vo to VDD. VLCD will then be used directly as LCD voltage.
+ // Note5: PCF2113 is different wrt to VLCD generator !
+ // Note6: See datasheet, the PCF21XX-C and PCF21XX-K use a non-standard character set. This may result is strange text when not corrected..
+
+ // Initialise Display configuration
+ switch (_type) {
+// case LCD12x1:
+// case LCD12x2:
+ case LCD24x1:
+ _writeCommand(0x22); //FUNCTION SET 4 bit, N=0/M=0 1-line/24 chars display mode, G=1 VGen on
//Note: 4 bit mode is ignored for I2C mode
wait_ms(10); // Wait 10ms to ensure powered up
break;
- case LCD12x3B:
- case LCD12x4B:
- _writeCommand(0x2E); //FUNCTION SET 4 bit, N=1/M=1 4-line/12 chars display mode, G=1 Booster on
+ case LCD12x3D:
+ case LCD12x3D1:
+ case LCD12x4D:
+ _writeCommand(0x2E); //FUNCTION SET 4 bit, N=1/M=1 4-line/12 chars display mode, G=1 VGen on
//Note: 4 bit mode is ignored for I2C mode
wait_ms(10); // Wait 10ms to ensure powered up
break;
-
- default:
- // All other LCD types are initialised as 2 Line displays
- _writeCommand(0x2A); //FUNCTION SET 4 bit, N=1/M=0 2-line/24 chars display mode, G=1 Booster on
+
+ case LCD24x2:
+ _writeCommand(0x2A); //FUNCTION SET 4 bit, N=1/M=0 2-line/24 chars display mode, G=1 VGen on
//Note: 4 bit mode is ignored for I2C mode
+ wait_ms(10); // Wait 10ms to ensure powered up
- wait_ms(10); // Wait 10ms to ensure powered up
-
-
- led1=!led1;
+ default:
+ error("Error: LCD Controller type does not support this Display type\n\r");
+ break;
+
} // switch type
-
- break; // case PCF21XX_3V3 Controller
-
+ break; // case PCF2116_3V3 Controller
// case PCF21XX_5V:
- // PCF21XX controller: No Voltage booster for VLCD. VDD=5V
-
+ // PCF21XX controller: No Voltage generator for VLCD. VDD=5V
+//@TODO
case WS0010:
// WS0010 OLED controller: Initialise DC/DC Voltage converter for LEDs
- // Note: supports 1 or 2 lines (and 16x100 graphics)
- // supports 4 fonts (English/Japanese (default), Western European-I, English/Russian, Western European-II)
+ // Note1: Identical to RS0010
+ // Note2: supports 1 or 2 lines (and 16x100 graphics)
+ // supports 4 fonts (English/Japanese (default), Western European-I, English/Russian, Western European-II)
// Cursor/Disp shift set 0001 SC RL 0 0
//
- // Mode en Power set 0001 GC PWR 1 1
+ // Mode and Power set 0001 GC PWR 1 1
// GC = 0 (Graph Mode=1, Char Mode=0)
- // PWR = (DC/DC On/Off)
-
+ // PWR = 1 (DC/DC On/Off)
+
+//@Todo: This may be needed to enable a warm reboot
//_writeCommand(0x13); // DC/DC off
+ //wait_ms(10); // Wait 10ms to ensure powered down
_writeCommand(0x17); // DC/DC on
- wait_ms(10); // Wait 10ms to ensure powered up
-
+ wait_ms(10); // Wait 10ms to ensure powered up
// Initialise Display configuration
switch (_type) {
@@ -388,21 +530,30 @@
case LCD8x2B: //8x2B is a special case of 16x1
// case LCD12x1:
case LCD16x1:
-// case LCD24x1:
- _writeCommand(0x20); // Function set 001 DL N F - -
- // DL=0 (4 bits bus)
- // N=0 (1 line)
- // F=0 (5x7 dots font)
+ case LCD24x1:
+ _writeCommand(0x20); // Function set 001 DL N F FT1 FT0
+ // DL=0 (4 bits bus)
+ // N=0 (1 line)
+ // F=0 (5x7 dots font)
+ // FT=00 (00 = Engl/Jap, 01 = WestEur1, 10 = Engl/Russian, 11 = WestEur2
+ break;
+
+ case LCD12x3D: // Special mode for PCF2116
+ case LCD12x3D1: // Special mode for PCF2116
+ case LCD12x4D: // Special mode for PCF2116
+ case LCD24x4D: // Special mode for KS0078
+ error("Error: LCD Controller type does not support this Display type\n\r");
break;
default:
- // All other LCD types are initialised as 2 Line displays (including LCD40x4)
- _writeCommand(0x28); // Function set 001 DL N F - -
- // DL=0 (4 bits bus)
- // N=1 (2 lines)
- // F=0 (5x7 dots font, only option for 2 line display)
- // - (Don't care)
-
+ // All other LCD types are initialised as 2 Line displays (including LCD16x1C and LCD40x4)
+ _writeCommand(0x28); // Function set 001 DL N F FT1 FT0
+ // DL=0 (4 bits bus)
+ // N=1 (2 lines)
+ // F=0 (5x7 dots font)
+ // FT=00 (00 = Engl/Jap, 01 = WestEur1, 10 = Engl/Russian, 11 = WestEur2
+
+
break;
} // switch type
@@ -417,14 +568,25 @@
case LCD8x2B: //8x2B is a special case of 16x1
// case LCD12x1:
case LCD16x1:
+// case LCD20x1:
case LCD24x1:
+// case LCD40x1:
_writeCommand(0x20); // Function set 001 DL N F - -
// DL=0 (4 bits bus)
// N=0 (1 line)
// F=0 (5x7 dots font)
break;
- // All other LCD types are initialised as 2 Line displays (including LCD40x4)
+
+// case LCD12x3D: // Special mode for PCF2116
+// case LCD12x3D1: // Special mode for PCF2116
+// case LCD12x4D: // Special mode for PCF2116
+// case LCD24x3D: // Special mode for KS0078
+ case LCD24x4D: // Special mode for KS0078
+ error("Error: LCD Controller type does not support this Display type\n\r");
+ break;
+
+ // All other LCD types are initialised as 2 Line displays (including LCD16x1C and LCD40x4)
default:
_writeCommand(0x28); // Function set 001 DL N F - -
// DL=0 (4 bits bus)
@@ -441,8 +603,7 @@
} // switch Controller specific initialisations
- // Controller general initialisations
-
+ // Controller general initialisations
_writeCommand(0x01); // cls, and set cursor to 0
wait_ms(10); // The CLS command takes 1.64 ms.
// Since we are not using the Busy flag, Lets be safe and take 10 ms
@@ -460,12 +621,10 @@
// R/L=1 Right
//
-
// _writeCommand(0x0C); // Display Ctrl 0000 1 D C B
// // Display On, Cursor Off, Blink Off
setCursor(CurOff_BlkOff);
setMode(DispOn);
- led2=!led2;
}
@@ -499,7 +658,7 @@
}
setAddress(0, 0); // Reset Cursor location
- // Note: this is needed because some rare displays (eg PCF21XX) don't use line 0 in the '3 Line' mode.
+ // Note: this is needed because some displays (eg PCF21XX) don't use line 0 in the '3 Line' mode.
}
/** Locate cursor to a screen column and row
@@ -517,7 +676,7 @@
setAddress(column, row);
}
-
+
/** Write a single character (Stream implementation)
*/
@@ -574,7 +733,6 @@
wait_us(1); // Datahold time
// Enable is Low
-
}
@@ -654,6 +812,7 @@
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
@@ -661,12 +820,18 @@
* @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 LCD24x1:
+// case LCD12x1:
+// case LCD16x1B:
+// case LCD20x1:
+ case LCD24x1:
+// case LCD40x1:
return 0x00 + column;
case LCD16x1:
@@ -676,7 +841,7 @@
else
return 0x40 + (column - 8);
- case LCD8x2B:
+ case LCD8x2D:
// LCD8x2B is a special layout of LCD16x1
if (row==0)
return 0x00 + column;
@@ -702,6 +867,7 @@
// Special mode for PCF2116
case LCD12x3B:
+ //Display bottom three rows of four
switch (row) {
case 0:
return 0x20 + column;
@@ -711,6 +877,19 @@
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:
@@ -815,6 +994,143 @@
}
}
+#else
+
+//Test of Addressing Mode encoded in LCDType
+
+// 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 (_addr_mode) {
+
+ case LCD_T_A:
+ //Default addressing mode for 1, 2 and 4 rows (except 40x4)
+ //The two available rows are split and stacked on top of eachother. Addressing for 3rd and 4th line continues where lines 1 and 2 were split.
+ //Displays top rows when less than four are used.
+ switch (row) {
+ case 0:
+ return 0x00 + column;
+ case 1:
+ return 0x40 + column;
+ case 2:
+ return 0x00 + _nr_cols + column;
+ case 3:
+ return 0x40 + _nr_cols + column;
+ // Should never get here.
+ default:
+ return 0x00;
+ }
+
+ case LCD_T_B:
+ // LCD8x2B is a special layout of LCD16x1
+ if (row==0)
+ return 0x00 + column;
+ else
+// return _nr_cols + column;
+ return 0x08 + column;
+
+ case LCD_T_C:
+ // LCD16x1C is a special layout of LCD8x2
+ if (column<8)
+ return 0x00 + column;
+ else
+ return 0x40 + (column - 8);
+
+// Not sure about this one, seems wrong.
+// Left in for compatibility with original library
+// case LCD16x2B:
+// return 0x00 + (row * 40) + column;
+
+
+ case LCD_T_D:
+ //Alternate addressing mode for 3 and 4 row displays (except 40x4). Used by PCF21XX, KS0078
+ //The 4 available rows start at a hardcoded address.
+ //Displays top rows when less than four are used.
+ switch (row) {
+ case 0:
+ return 0x00 + column;
+ case 1:
+ return 0x20 + column;
+ case 2:
+ return 0x40 + column;
+ case 3:
+ return 0x60 + column;
+ // Should never get here.
+ default:
+ return 0x00;
+ }
+
+ case LCD_T_D1:
+ //Alternate addressing mode for 3 row displays. Used by PCF21XX, KS0078
+ //The 4 available rows start at a hardcoded address.
+ //Skips top row of 4 row display and starts display at row 1
+ switch (row) {
+ case 0:
+ return 0x20 + column;
+ case 1:
+ return 0x40 + column;
+ case 2:
+ return 0x60 + column;
+ // Should never get here.
+ default:
+ return 0x00;
+ }
+
+ case LCD_T_E:
+ // LCD40x4 is a special case since it has 2 controllers.
+ // Each controller is configured as 40x2 (Type A)
+ 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;
+ }
+}
+
+
+#endif
+
+
/** Set the memoryaddress of screen column and row location
*
@@ -852,8 +1168,16 @@
/** Return the number of columns
*
* @param return The number of columns
+ *
+ * Note: some configurations are commented out because they have not yet been tested due to lack of hardware
*/
int TextLCD_Base::columns() {
+
+ // Columns encoded in b7..b0
+ //return (_type & 0xFF);
+ return _nr_cols;
+
+#if(0)
switch (_type) {
case LCD8x1:
case LCD8x2:
@@ -862,6 +1186,7 @@
case LCD12x2:
case LCD12x3B:
+// case LCD12x3C:
case LCD12x4:
case LCD12x4B:
return 12;
@@ -873,15 +1198,18 @@
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;
@@ -890,17 +1218,28 @@
default:
return 0;
}
+#endif
}
/** Return the number of rows
*
* @param return The number of rows
+ *
+ * Note: some configurations are commented out because they have not yet been tested due to lack of hardware
*/
int TextLCD_Base::rows() {
+
+ // 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:
@@ -914,7 +1253,9 @@
return 2;
case LCD12x3B:
+// case LCD12x3C:
// case LCD16x3:
+// case LCD24x3B:
return 3;
case LCD12x4:
@@ -929,6 +1270,7 @@
default:
return 0;
}
+#endif
}
/** Set the Cursormode
@@ -981,14 +1323,12 @@
// Configure secondary LCD controller
_setCursorAndDisplayMode(_currentMode, _currentCursor);
-
}
}
else {
// Configure primary LCD controller
_setCursorAndDisplayMode(_currentMode, _currentCursor);
- }
-
+ }
}
@@ -1000,7 +1340,6 @@
_writeCommand(0x08 | displayMode | cursorType);
}
-
/** Set the Backlight mode
*
* @param backlightMode The Backlight mode (LightOff, LightOn)
@@ -1062,14 +1401,12 @@
//Select DD RAM again for current LCD controller
int addr = getAddress(_column, _row);
- _writeCommand(0x80 | addr);
-
+ _writeCommand(0x80 | addr);
}
//--------- End TextLCD_Base -----------
-
//--------- Start TextLCD Bus -----------
/* Create a TextLCD interface for using regular mbed pins
@@ -1109,10 +1446,8 @@
}
_init();
-
}
-
/** Destruct a TextLCD interface for using regular mbed pins
*
* @param none
@@ -1148,7 +1483,6 @@
if (_e2 != NULL) {_e2->write(0);} //Reset E2 bit
}
}
-
}
// Set RS pin
@@ -1161,7 +1495,6 @@
else {
_rs = 0; // Reset RS bit
}
-
}
/** Set BL pin
@@ -1186,7 +1519,6 @@
void TextLCD::_setData(int value) {
_d = value & 0x0F; // Write Databits
}
-
//----------- End TextLCD ---------------
@@ -1206,12 +1538,10 @@
_slaveAddress = deviceAddress & 0xFE;
-
// Setup the I2C bus
// The max bitrate for PCF8574 is 100kbit, the max bitrate for MCP23008 is 400kbit,
// _i2c->frequency(100000);
-
#if (MCP23008==1)
// MCP23008 portexpander Init
_write_register(IODIR, 0x00); // All outputs
@@ -1241,8 +1571,7 @@
_i2c->write(_slaveAddress, &_lcd_bus, 1);
#endif
- _init();
-
+ _init();
}
// Set E pin (or E2 pin)
@@ -1266,7 +1595,6 @@
}
}
-
#if (MCP23008==1)
// MCP23008 portexpander
@@ -1291,7 +1619,6 @@
_lcd_bus &= ~D_LCD_RS; // Reset RS bit
}
-
#if (MCP23008==1)
// MCP23008 portexpander
@@ -1302,8 +1629,7 @@
// write the new data to the I2C portexpander
_i2c->write(_slaveAddress, &_lcd_bus, 1);
-#endif
-
+#endif
}
// Set BL pin
@@ -1327,12 +1653,10 @@
// write the new data to the I2C portexpander
_i2c->write(_slaveAddress, &_lcd_bus, 1);
-#endif
-
+#endif
}
-
// Place the 4bit data on the databus
// Used for mbed pins, I2C bus expander or SPI shifregister
void TextLCD_I2C::_setData(int value) {
@@ -1387,8 +1711,7 @@
void TextLCD_I2C::_write_register (int reg, int value) {
char data[] = {reg, value};
- _i2c->write(_slaveAddress, data, 2);
-
+ _i2c->write(_slaveAddress, data, 2);
}
//---------- End TextLCD_I2C ------------
@@ -1407,15 +1730,14 @@
TextLCD_I2C_N::TextLCD_I2C_N(I2C *i2c, char deviceAddress, LCDType type, PinName bl, LCDCtrl ctrl) :
TextLCD_Base(type, ctrl),
_i2c(i2c){
-
+
_slaveAddress = deviceAddress & 0xFE;
// Setup the I2C bus
// The max bitrate for ST7032i is 400kbit, lets stick to default here
_i2c->frequency(100000);
// _i2c->frequency(50000);
-
-
+
// The hardware Backlight pin is optional. Test and make sure whether it exists or not to prevent illegal access.
if (bl != NC) {
_bl = new DigitalOut(bl); //Construct new pin
@@ -1426,7 +1748,29 @@
_bl = NULL; //Construct dummy pin
}
- _init();
+#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();
+ }
+ else {
+ error("Error: LCD Controller type does not support native I2C interface\n\r");
+ }
+
}
TextLCD_I2C_N::~TextLCD_I2C_N() {
@@ -1440,7 +1784,16 @@
// Set RS pin
// Used for mbed pins, I2C bus expander or SPI shiftregister and native I2C or SPI
void TextLCD_I2C_N::_setRS(bool value) {
-
+// The controlbyte defines the meaning of the next byte. This next byte can either be data or command.
+// Start Slaveaddress+RW b7 b6 b5 b4 b3 b2 b1 b0 b7...........b0 Stop
+// Co RS RW 0 0 0 0 0 command or data
+//
+// C0=1 indicates that another controlbyte will follow after the next data or command byte
+// RS=1 means that next byte is data, RS=0 means that next byte is command
+// RW=0 means write to controller. RW=1 means that controller will be read from after the next command.
+// Many native I2C controllers dont support this option and it is not used by this lib.
+//
+
if (value) {
_controlbyte = 0x40; // Next byte is data, No more control bytes will follow
}
@@ -1455,28 +1808,30 @@
_bl->write(value);
}
}
-
// Not used in this mode
void TextLCD_I2C_N::_setData(int value) {
}
-
// Write a byte using I2C
void TextLCD_I2C_N::_writeByte(int value) {
-
+// The controlbyte defines the meaning of the next byte. This next byte can either be data or command.
+// Start Slaveaddress+RW b7 b6 b5 b4 b3 b2 b1 b0 b7...........b0 Stop
+// Co RS RW 0 0 0 0 0 command or data
+//
+// C0=1 indicates that another controlbyte will follow after the next data or command byte
+// RS=1 means that next byte is data, RS=0 means that next byte is command
+// RW=0 means write to controller. RW=1 means that controller will be read from after the next command.
+// Many native I2C controllers dont support this option and it is not used by this lib.
+//
char data[] = {_controlbyte, value};
- _i2c->write(_slaveAddress, data, 2);
-
+ _i2c->write(_slaveAddress, data, 2);
}
-
//-------- End TextLCD_I2C_N ------------
-
-
//--------- Start TextLCD_SPI -----------
/** Create a TextLCD interface using an SPI 74595 portexpander
@@ -1497,7 +1852,6 @@
_spi->frequency(500000);
//_spi.frequency(1000000);
-
// Init the portexpander bus
_lcd_bus = D_LCD_BUS_DEF;
@@ -1505,9 +1859,8 @@
_setCS(false);
_spi->write(_lcd_bus);
_setCS(true);
-
- _init();
-
+
+ _init();
}
// Set E pin (or E2 pin)
@@ -1534,8 +1887,7 @@
// write the new data to the SPI portexpander
_setCS(false);
_spi->write(_lcd_bus);
- _setCS(true);
-
+ _setCS(true);
}
// Set RS pin
@@ -1553,7 +1905,6 @@
_setCS(false);
_spi->write(_lcd_bus);
_setCS(true);
-
}
// Set BL pin
@@ -1570,11 +1921,9 @@
// write the new data to the SPI portexpander
_setCS(false);
_spi->write(_lcd_bus);
- _setCS(true);
-
+ _setCS(true);
}
-
// Place the 4bit data on the databus
// Used for mbed pins, I2C bus expander or SPI shiftregister
void TextLCD_SPI::_setData(int value) {
@@ -1614,11 +1963,9 @@
// write the new data to the SPI portexpander
_setCS(false);
_spi->write(_lcd_bus);
- _setCS(true);
-
+ _setCS(true);
}
-
// Set CS line.
// Only used for SPI bus
void TextLCD_SPI::_setCS(bool value) {
@@ -1636,7 +1983,7 @@
//--------- Start TextLCD_SPI_N ---------
- /** Create a TextLCD interface using a controller with a native SPI interface
+ /** Create a TextLCD interface using a controller with a native SPI4 interface
*
* @param spi SPI Bus
* @param cs chip select pin (active low)
@@ -1665,8 +2012,28 @@
// No Hardware Backlight pin
_bl = NULL; //Construct dummy pin
}
-
- _init();
+
+#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();
+ }
+ else {
+ error("Error: LCD Controller type does not support native SPI4 interface\n\r");
+ }
}
TextLCD_SPI_N::~TextLCD_SPI_N() {
@@ -1694,7 +2061,6 @@
void TextLCD_SPI_N::_setData(int value) {
}
-
// Write a byte using SPI
void TextLCD_SPI_N::_writeByte(int value) {
_cs = 0;
@@ -1703,12 +2069,193 @@
wait_us(1);
_cs = 1;
}
-
-
-
+
//-------- End TextLCD_SPI_N ------------
+#if(0)
+//Code checked out on logic analyser. Not yet tested on hardware..
+
+//-------- Start TextLCD_SPI_N_3_9 --------
+
+ /** Create a TextLCD interface using a controller with a native SPI3 9 bits interface
+ *
+ * @param spi SPI Bus
+ * @param cs chip select pin (active low)
+ * @param type Sets the panel size/addressing mode (default = LCD16x2)
+ * @param bl Backlight control line (optional, default = NC)
+ * @param ctrl LCD controller (default = AIP31068)
+ */
+TextLCD_SPI_N_3_9::TextLCD_SPI_N_3_9(SPI *spi, PinName cs, LCDType type, PinName bl, LCDCtrl ctrl) :
+ TextLCD_Base(type, ctrl),
+ _spi(spi),
+ _cs(cs) {
+
+ // Setup the spi for 9 bit data, low steady state clock,
+ // rising edge capture, with a 500KHz or 1MHz clock rate
+ _spi->format(9,0);
+ _spi->frequency(1000000);
+
+ // The hardware Backlight pin is optional. Test and make sure whether it exists or not to prevent illegal access.
+ if (bl != NC) {
+ _bl = new DigitalOut(bl); //Construct new pin
+ _bl->write(0); //Deactivate
+ }
+ else {
+ // No Hardware Backlight pin
+ _bl = NULL; //Construct dummy pin
+ }
+
+ //Sanity check
+ if (_ctrl & LCD_C_SPI3_9) {
+ _init();
+ }
+ else {
+ error("Error: LCD Controller type does not support native SPI3 9 bits interface\n\r");
+ }
+}
+
+TextLCD_SPI_N_3_9::~TextLCD_SPI_N_3_9() {
+ if (_bl != NULL) {delete _bl;} // BL pin
+}
+
+// Not used in this mode
+void TextLCD_SPI_N_3_9::_setEnable(bool value) {
+}
+
+// Set RS pin
+// Used for mbed pins, I2C bus expander or SPI shiftregister
+void TextLCD_SPI_N_3_9::_setRS(bool value) {
+// The controlbits define the meaning of the next byte. This next byte can either be data or command.
+// b8 b7...........b0
+// RS command or data
+//
+// RS=1 means that next byte is data, RS=0 means that next byte is command
+//
+
+ if (value) {
+ _controlbyte = 0x01; // Next byte is data
+ }
+ else {
+ _controlbyte = 0x00; // Next byte is command
+ }
+
+}
+
+// Set BL pin
+void TextLCD_SPI_N_3_9::_setBL(bool value) {
+ if (_bl) {
+ _bl->write(value);
+ }
+}
+
+// Not used in this mode
+void TextLCD_SPI_N_3_9::_setData(int value) {
+}
+
+// Write a byte using SPI3 9 bits mode
+void TextLCD_SPI_N_3_9::_writeByte(int value) {
+ _cs = 0;
+ wait_us(1);
+ _spi->write( (_controlbyte << 8) | (value & 0xFF));
+ wait_us(1);
+ _cs = 1;
+}
+
+//------- End TextLCD_SPI_N_3_9 -----------
+#endif
+#if(0)
+//Code checked out on logic analyser. Not yet tested on hardware..
+
+//------- Start TextLCD_SPI_N_3_10 --------
+
+ /** Create a TextLCD interface using a controller with a native SPI3 10 bits interface
+ *
+ * @param spi SPI Bus
+ * @param cs chip select pin (active low)
+ * @param type Sets the panel size/addressing mode (default = LCD16x2)
+ * @param bl Backlight control line (optional, default = NC)
+ * @param ctrl LCD controller (default = AIP31068)
+ */
+TextLCD_SPI_N_3_10::TextLCD_SPI_N_3_10(SPI *spi, PinName cs, LCDType type, PinName bl, LCDCtrl ctrl) :
+ TextLCD_Base(type, ctrl),
+ _spi(spi),
+ _cs(cs) {
+
+ // Setup the spi for 10 bit data, low steady state clock,
+ // rising edge capture, with a 500KHz or 1MHz clock rate
+ _spi->format(10,0);
+ _spi->frequency(1000000);
+
+ // The hardware Backlight pin is optional. Test and make sure whether it exists or not to prevent illegal access.
+ if (bl != NC) {
+ _bl = new DigitalOut(bl); //Construct new pin
+ _bl->write(0); //Deactivate
+ }
+ else {
+ // No Hardware Backlight pin
+ _bl = NULL; //Construct dummy pin
+ }
+
+ //Sanity check
+ if (_ctrl & LCD_C_SPI3_10) {
+ _init();
+ }
+ else {
+ error("Error: LCD Controller type does not support native SPI3 10 bits interface\n\r");
+ }
+}
+
+TextLCD_SPI_N_3_10::~TextLCD_SPI_N_3_10() {
+ if (_bl != NULL) {delete _bl;} // BL pin
+}
+
+// Not used in this mode
+void TextLCD_SPI_N_3_10::_setEnable(bool value) {
+}
+
+// Set RS pin
+// Used for mbed pins, I2C bus expander or SPI shiftregister
+void TextLCD_SPI_N_3_10::_setRS(bool value) {
+// The controlbits define the meaning of the next byte. This next byte can either be data or command.
+// b9 b8 b7...........b0
+// RS RW command or data
+//
+// RS=1 means that next byte is data, RS=0 means that next byte is command
+// RW=0 means that next byte is writen, RW=1 means that next byte is read (not used in this lib)
+//
+
+ if (value) {
+ _controlbyte = 0x02; // Next byte is data
+ }
+ else {
+ _controlbyte = 0x00; // Next byte is command
+ }
+
+}
+
+// Set BL pin
+void TextLCD_SPI_N_3_10::_setBL(bool value) {
+ if (_bl) {
+ _bl->write(value);
+ }
+}
+
+// Not used in this mode
+void TextLCD_SPI_N_3_10::_setData(int value) {
+}
+
+// Write a byte using SPI3 10 bits mode
+void TextLCD_SPI_N_3_10::_writeByte(int value) {
+ _cs = 0;
+ wait_us(1);
+ _spi->write( (_controlbyte << 8) | (value & 0xFF));
+ wait_us(1);
+ _cs = 1;
+}
+
+//------- End TextLCD_SPI_N_3_10 ----------
+#endif
\ No newline at end of file