Marvas
i2c'li lcd ekran Mehmet Akif ARVAS
Diff: TextLCD.h
- Revision:
- 29:a3663151aa65
- Parent:
- 28:30fa94f7341c
- Child:
- 30:033048611c01
--- a/TextLCD.h Sat Jun 14 17:04:25 2014 +0000
+++ b/TextLCD.h Tue Jun 17 17:41:47 2014 +0000
@@ -10,6 +10,7 @@
* 2014, v08: WH, Refactored in Base and Derived Classes to deal with mbed lib change regarding 'NC' defined DigitalOut 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
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
@@ -69,14 +70,15 @@
//LCD and serial portexpanders should be wired accordingly
//
//Select Hardware module (one option only)
-#define DEFAULT 1
-#define ADAFRUIT 0
+#define DEFAULT 0
+#define ADAFRUIT 1
#define DFROBOT 0
#if (DEFAULT==1)
-//Definitions for hardware used by WH
+//Definitions for default (WH) mapping between serial port expander pins and LCD controller
//This hardware supports the I2C bus expander (PCF8574/PCF8574A or MCP23008) and SPI bus expander (74595) interfaces
+//See https://mbed.org/cookbook/Text-LCD-Enhanced
//
//Note: LCD RW pin must be connected to GND
// E2 is used for LCD40x4 (second controller)
@@ -98,8 +100,9 @@
#endif
#if (ADAFRUIT==1)
-//Definitions for i2cspilcdbackpack from Adafruit, See http://www.ladyada.net/products/i2cspilcdbackpack
+//Definitions for Adafruit i2cspilcdbackpack mapping between serial port expander pins and LCD controller
//This hardware supports both an I2C expander (MCP23008) and an SPI expander (74595) selectable by a jumper.
+//See http://www.ladyada.net/products/i2cspilcdbackpack
//
//Note: LCD RW pin must be kept LOW
// E2 is not available on this hardware and so it does not support LCD40x4 (second controller)
@@ -121,8 +124,9 @@
#endif
#if (DFROBOT==1)
-//Definitions for LCD2004 Module from DFROBOT, See http://arduino-info.wikispaces.com/LCD-Blue-I2C
+//Definitions for DFROBOT LCD2004 Module mapping between serial port expander pins and LCD controller
//This hardware uses PCF8574 and is different from earlier/different Arduino I2C LCD displays
+//See http://arduino-info.wikispaces.com/LCD-Blue-I2C
//
//Note: LCD RW pin must be kept LOW
// E2 is not available on default Arduino hardware and so it does not support LCD40x4 (second controller)
@@ -205,6 +209,9 @@
/* ST7032I I2C slave address */
#define ST7032_SA 0x7C
+/* PCF21XX I2C slave address */
+#define PCF21XX_SA0 0x74
+#define PCF21XX_SA1 0x76
/** Some sample User Defined Chars 5x7 dots */
const char udc_ae[] = {0x00, 0x00, 0x1B, 0x05, 0x1F, 0x14, 0x1F, 0x00}; //æ
@@ -252,10 +259,10 @@
//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 (kanji)
-//const char udc_ch_mo[] = {0x0f, 0x09, 0x0f, 0x09, 0x0f, 0x09, 0x09, 0x13}; // Month (kanji)
-//const char udc_ch_dy[] = {0x1f, 0x11, 0x11, 0x1f, 0x11, 0x11, 0x11, 0x1F}; // Day (kanji)
-//const char udc_ch_mi[] = {0x0C, 0x0a, 0x11, 0x1f, 0x09, 0x09, 0x09, 0x13}; // minute (kanji)
+//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)
/** A TextLCD interface for driving 4-bit HD44780-based LCDs
@@ -272,32 +279,37 @@
LCD8x1, /**< 8x1 LCD panel */
LCD8x2, /**< 8x2 LCD panel */
LCD8x2B, /**< 8x2 LCD panel (actually 16x1) */
+// LCD12x1, /**< 12x1 LCD panel */
+// LCD12x1B, /**< 12x1 LCD panel, special mode PCF21XX */
LCD12x2, /**< 12x2 LCD panel */
-// LCD12x3, /**< 12x3 LCD panel, special mode PCF21XX */
+ LCD12x3B, /**< 12x3 LCD panel, special mode PCF21XX */
LCD12x4, /**< 12x4 LCD panel */
-// LCD12x4B, /**< 12x4 LCD panel, special mode PCF21XX */
+ LCD12x4B, /**< 12x4 LCD panel, special mode PCF21XX */
LCD16x1, /**< 16x1 LCD panel (actually 8x2) */
LCD16x2, /**< 16x2 LCD panel (default) */
LCD16x2B, /**< 16x2 LCD panel alternate addressing */
-// LCD16x3, /**< 16x3 LCD panel, special mode ST7036 */
+// LCD16x3B, /**< 16x3 LCD panel, special mode ST7036 */
LCD16x4, /**< 16x4 LCD panel */
+// LCD20x1, /**< 20x1 LCD panel */
LCD20x2, /**< 20x2 LCD panel */
LCD20x4, /**< 20x4 LCD panel */
+ LCD24x4B, /**< 24x4 LCD panel, special mode KS0078 */
+ LCD24x1, /**< 24x1 LCD panel */
LCD24x2, /**< 24x2 LCD panel */
- LCD24x4, /**< 24x4 LCD panel, special mode KS0078 */
LCD40x2, /**< 40x2 LCD panel */
LCD40x4 /**< 40x4 LCD panel, Two controller version */
};
/** LCD Controller Device */
enum LCDCtrl {
- HD44780, /**< HD44780 (default) */
- WS0010, /**< WS0010 OLED Controller */
- ST7036, /**< ST7036 3V3 with Booster */
- ST7032_3V3, /**< ST7032 3V3 with Booster */
- ST7032_5V /**< ST7032 5V no Booster */
-// PCF210X, /**< PCF210X 5V no Booster */
-// PCF211X /**< PCF211X 3V3 with Booster */
+ HD44780, /**< HD44780 (default) */
+ WS0010, /**< WS0010 OLED Controller, 4/8 bit */
+ ST7036, /**< ST7036 3V3 with Booster, 4/8 bit, SPI */
+ ST7032_3V3, /**< ST7032 3V3 with Booster, 4/8 bit, SPI, I2C */
+ ST7032_5V, /**< ST7032 5V no Booster, 4/8 bit, SPI, I2C */
+ KS0078, /**< KS0078 24x3 support */
+ PCF21XX_3V3, /**< PCF21XX 3V3 with Booster, 4/8 bit, I2C */
+// PCF21XX_5V /**< PCF21XX 5V no Booster, 4/8 bit, I2C */
};
@@ -338,7 +350,7 @@
int printf(const char* format, ...);
#endif
- /** Locate to a screen column and row
+ /** Locate cursor to a screen column and row
*
* @param column The horizontal position from the left, indexed from 0
* @param row The vertical position from the top, indexed from 0
@@ -406,7 +418,9 @@
*/
void setUDC(unsigned char c, char *udc_data);
-
+//test
+ void _initCtrl();
+
protected:
/** LCD controller select, mainly used for LCD40x4
@@ -429,29 +443,70 @@
virtual int _putc(int value);
virtual int _getc();
-/** Low level methods for LCD controller
+/** Low level method for LCD controller
*/
void _init();
- void _initCtrl();
+
+/** Low level initialisation method for LCD controller
+ */
+// void _initCtrl();
+
+/** Low level character address set method
+ */
int _address(int column, int row);
+
+/** Low level cursor enable or disable method
+ */
void _setCursor(LCDCursor show);
+
+/** Low level method to store user defined characters for current controller
+ */
void _setUDC(unsigned char c, char *udc_data);
+
+/** Low level method to restore the cursortype and display mode for current controller
+ */
void _setCursorAndDisplayMode(LCDMode displayMode, LCDCursor cursorType);
-/** Low level write operations to LCD controller
+
+/** Low level nibble write operation to LCD controller (serial or parallel)
*/
void _writeNibble(int value);
- virtual void _writeByte(int value);
+
+/** Low level command byte write operation to LCD controller.
+ * Methods resets the RS bit and provides the required timing for the command.
+ */
void _writeCommand(int command);
+
+/** Low level data byte write operation to LCD controller (serial or parallel).
+ * Methods sets the RS bit and provides the required timing for the data.
+ */
void _writeData(int data);
+
+/** Pure Virtual Low level writes to LCD Bus (serial or parallel)
+ * Set the Enable pin.
+ */
+ virtual void _setEnable(bool value) = 0;
+
/** Pure Virtual Low level writes to LCD Bus (serial or parallel)
- */
- virtual void _setEnable(bool value) = 0;
+ * Set the RS pin ( 0 = Command, 1 = Data).
+ */
virtual void _setRS(bool value) = 0;
+
+/** Pure Virtual Low level writes to LCD Bus (serial or parallel)
+ * Set the BL pin (0 = Backlight Off, 1 = Backlight On).
+ */
virtual void _setBL(bool value) = 0;
+
+/** Pure Virtual Low level writes to LCD Bus (serial or parallel)
+ * Set the databus value (4 bit).
+ */
virtual void _setData(int value) = 0;
+/** Low level byte write operation to LCD controller (serial or parallel)
+ * Depending on the RS pin this byte will be interpreted as data or command
+ */
+ virtual void _writeByte(int value);
//Display type
LCDType _type;
@@ -503,12 +558,28 @@
virtual ~TextLCD();
private:
-//Low level writes to LCD Bus (serial or parallel)
+
+/** Implementation of pure Virtual Low level writes to LCD Bus (parallel)
+ * Set the Enable pin.
+ */
virtual void _setEnable(bool value);
+
+/** Implementation of pure Virtual Low level writes to LCD Bus (parallel)
+ * Set the RS pin ( 0 = Command, 1 = Data).
+ */
virtual void _setRS(bool value);
+
+/** Implementation of pure Virtual Low level writes to LCD Bus (parallel)
+ * Set the BL pin (0 = Backlight Off, 1 = Backlight On).
+ */
virtual void _setBL(bool value);
+
+/** Implementation of pure Virtual Low level writes to LCD Bus (parallel)
+ * Set the databus value (4 bit).
+ */
virtual void _setData(int value);
+
/** Regular mbed pins bus
*/
DigitalOut _rs, _e;
@@ -542,13 +613,34 @@
TextLCD_I2C(I2C *i2c, char deviceAddress = PCF8574_SA0, LCDType type = LCD16x2, LCDCtrl ctrl = HD44780);
private:
-//Low level writes to LCD Bus (serial or parallel)
+
+/** Implementation of pure Virtual Low level writes to LCD Bus (serial expander)
+ * Set the Enable pin.
+ */
virtual void _setEnable(bool value);
+
+/** Implementation of pure Virtual Low level writes to LCD Bus (serial expander)
+ * Set the RS pin ( 0 = Command, 1 = Data).
+ */
virtual void _setRS(bool value);
+
+/** Implementation of pure Virtual Low level writes to LCD Bus (serial expander)
+ * Set the BL pin (0 = Backlight Off, 1 = Backlight On).
+ */
virtual void _setBL(bool value);
- virtual void _setData(int value);
-
-// Write data to MCP23008 I2C portexpander
+
+/** Implementation of pure Virtual Low level writes to LCD Bus (serial expander)
+ * Set the databus value (4 bit).
+ */
+ virtual void _setData(int value);
+
+
+/** Write data to MCP23008 I2C portexpander
+ * @param reg register to write
+ * @param value data to write
+ * @return none
+ *
+ */
void _write_register (int reg, int value);
//I2C bus
@@ -584,15 +676,35 @@
private:
-//Low level writes to LCD Bus (serial or parallel)
+
+/** Implementation of pure Virtual Low level writes to LCD Bus (serial expander)
+ * Set the Enable pin.
+ */
virtual void _setEnable(bool value);
+
+/** Implementation of pure Virtual Low level writes to LCD Bus (serial expander)
+ * Set the RS pin ( 0 = Command, 1 = Data).
+ */
virtual void _setRS(bool value);
+
+/** Implementation of pure Virtual Low level writes to LCD Bus (serial expander)
+ * Set the BL pin (0 = Backlight Off, 1 = Backlight On).
+ */
virtual void _setBL(bool value);
+
+/** Implementation of pure Virtual Low level writes to LCD Bus (serial expander)
+ * Set the databus value (4 bit).
+ */
virtual void _setData(int value);
+
+/** Implementation of Low level writes to LCD Bus (serial expander)
+ * Set the CS pin (0 = select, 1 = deselect).
+ */
virtual void _setCS(bool value);
-//Low level writes to LCD serial bus only
- void _writeBus();
+///** Low level writes to LCD serial bus only (serial expander)
+// */
+// void _writeBus();
// SPI bus
SPI *_spi;
@@ -627,11 +739,31 @@
virtual ~TextLCD_SPI_N(void);
private:
+
+/** Implementation of pure Virtual Low level writes to LCD Bus (serial native)
+ * Set the Enable pin.
+ */
virtual void _setEnable(bool value);
+
+/** Implementation of pure Virtual Low level writes to LCD Bus (serial native)
+ * Set the RS pin ( 0 = Command, 1 = Data).
+ */
virtual void _setRS(bool value);
+
+/** Implementation of pure Virtual Low level writes to LCD Bus (serial native)
+ * Set the BL pin (0 = Backlight Off, 1 = Backlight On).
+ */
virtual void _setBL(bool value);
+
+/** Implementation of pure Virtual Low level writes to LCD Bus (serial native)
+ * Set the databus value (4 bit).
+ */
virtual void _setData(int value);
+
+/** Low level writes to LCD serial bus only (serial native)
+ */
virtual void _writeByte(int value);
+
// SPI bus
SPI *_spi;
@@ -663,12 +795,32 @@
virtual ~TextLCD_I2C_N(void);
private:
+
+/** Implementation of pure Virtual Low level writes to LCD Bus (serial native)
+ * Set the Enable pin.
+ */
virtual void _setEnable(bool value);
+
+/** Implementation of pure Virtual Low level writes to LCD Bus (serial native)
+ * Set the RS pin ( 0 = Command, 1 = Data).
+ */
virtual void _setRS(bool value);
+
+/** Implementation of pure Virtual Low level writes to LCD Bus (serial native)
+ * Set the BL pin (0 = Backlight Off, 1 = Backlight On).
+ */
virtual void _setBL(bool value);
+
+/** Implementation of pure Virtual Low level writes to LCD Bus (serial native)
+ * Set the databus value (4 bit).
+ */
virtual void _setData(int value);
+
+/** Low level writes to LCD serial bus only (serial native)
+ */
virtual void _writeByte(int value);
+
//I2C bus
I2C *_i2c;
char _slaveAddress;