display funciona!
Dependents: 2018_I2C_LCD_03 TBI_FIAT_FEEDFORWARD Ignition Can_between_NUCLEOS_LCD ... more
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Diff: TextLCD.h
- Revision:
- 21:9eb628d9e164
- Parent:
- 20:e0da005a777f
- Child:
- 22:35742ec80c24
--- a/TextLCD.h Mon May 13 19:29:13 2013 +0000 +++ b/TextLCD.h Tue Apr 01 21:30:25 2014 +0000 @@ -7,6 +7,7 @@ * 2013, v05: WH, Added support for 8x2B, added some UDCs * 2013, v06: WH, Added support for devices that use internal DC/DC converters * 2013, v07: WH, Added support for backlight and include portdefinitions for LCD2004 Module from DFROBOT + * 2014, v08: WH, Refactored in Base and Derived Classes to deal with mbed lib change regarding 'NC' defined DigitalOut pins * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal @@ -50,9 +51,9 @@ * SPI spi_lcd(p5, NC, p7); // MOSI, MISO, SCLK * * TextLCD lcd(p15, p16, p17, p18, p19, p20); // RS, E, D4-D7, LCDType=LCD16x2, BL=NC, E2=NC, LCDTCtrl=HD44780 - * //TextLCD lcd(&spi_lcd, p8, TextLCD::LCD40x4); // SPI bus, CS pin, LCD Type - * //TextLCD lcd(&i2c_lcd, 0x42, TextLCD::LCD20x4); // I2C bus, PCF8574 Slaveaddress, LCD Type - * //TextLCD lcd(&i2c_lcd, 0x42, TextLCD::LCD16x2, TextLCD::WS0010); // I2C bus, PCF8574 Slaveaddress, LCD Type, Device Type + * //TextLCD_SPI lcd(&spi_lcd, p8, TextLCD::LCD40x4); // SPI bus, CS pin, LCD Type + * //TextLCD_I2C lcd(&i2c_lcd, 0x42, TextLCD::LCD20x4); // I2C bus, PCF8574 Slaveaddress, LCD Type + * //TextLCD_I2C lcd(&i2c_lcd, 0x42, TextLCD::LCD16x2, TextLCD::WS0010); // I2C bus, PCF8574 Slaveaddress, LCD Type, Device Type * * int main() { * lcd.printf("Hello World!\n"); @@ -163,7 +164,7 @@ * Currently supports 8x1, 8x2, 12x2, 12x4, 16x1, 16x2, 16x4, 20x2, 20x4, 24x2, 24x4, 40x2 and 40x4 panels * */ -class TextLCD : public Stream { +class TextLCD_Base : public Stream { public: /** LCD panel format */ @@ -193,6 +194,8 @@ }; + + /** LCD Cursor control */ enum LCDCursor { CurOff_BlkOff = 0x00, /**< Cursor Off, Blinking Char Off */ @@ -214,37 +217,6 @@ LightOn /**< Backlight On */ }; - /** Create a TextLCD interface for using regular mbed pins - * - * @param rs Instruction/data control line - * @param e Enable line (clock) - * @param d4-d7 Data lines for using as a 4-bit interface - * @param type Sets the panel size/addressing mode (default = LCD16x2) - * @param bl Backlight control line (optional, default = NC) - * @param e2 Enable2 line (clock for second controller, LCD40x4 only) - * @param ctrl LCD controller (default = HD44780) - */ - TextLCD(PinName rs, PinName e, PinName d4, PinName d5, PinName d6, PinName d7, LCDType type = LCD16x2, PinName bl = NC, PinName e2 = NC, LCDCtrl ctrl = HD44780); - - /** Create a TextLCD interface using an I2C PC8574 portexpander - * - * @param i2c I2C Bus - * @param deviceAddress I2C slave address (PCF8574) - * @param type Sets the panel size/addressing mode (default = LCD16x2) - * @param ctrl LCD controller (default = HD44780) - */ - TextLCD(I2C *i2c, char deviceAddress, LCDType type = LCD16x2, LCDCtrl ctrl = HD44780); - - - /** Create a TextLCD interface using an SPI 74595 portexpander - * - * @param spi SPI Bus - * @param cs chip select pin (active low) - * @param type Sets the panel size/addressing mode (default = LCD16x2) - * @param ctrl LCD controller (default = HD44780) - */ - TextLCD(SPI *spi, PinName cs, LCDType type = LCD16x2, LCDCtrl ctrl = HD44780); - #if DOXYGEN_ONLY /** Write a character to the LCD @@ -312,13 +284,13 @@ * * @param displayMode The Display mode (DispOff, DispOn) */ - void setMode(TextLCD::LCDMode displayMode); + void setMode(LCDMode displayMode); /** Set the Backlight mode * - * @param backlightMode The Backlight mode (LightOff, LightOn) + * @param backlightMode The Backlight mode (LightOff, LightOn) */ - void setBacklight(TextLCD::LCDBacklight backlightMode); + void setBacklight(LCDBacklight backlightMode); /** Set User Defined Characters @@ -330,70 +302,55 @@ protected: - /* LCD Bus control */ - enum _LCDBus { - _PinBus, /*< Regular mbed pins */ - _I2CBus, /*< I2C PCF8574 Portexpander */ - _SPIBus /*< SPI 74595 Shiftregister */ - }; - /* LCD controller select, mainly used for LCD40x4 */ + /** LCD controller select, mainly used for LCD40x4 + */ enum _LCDCtrl_Idx { _LCDCtrl_0, /*< Primary */ _LCDCtrl_1, /*< Secondary */ }; + + /** Create a TextLCD_Base interface + * @brief Base class, can not be instantiated + * + * @param type Sets the panel size/addressing mode (default = LCD16x2) + * @param ctrl LCD controller (default = HD44780) + */ + TextLCD_Base(LCDType type = LCD16x2, LCDCtrl ctrl = HD44780); + // Stream implementation functions virtual int _putc(int value); virtual int _getc(); -//Low level methods for LCD controller +/** Low level methods for LCD controller + */ void _init(); void _initCtrl(); int _address(int column, int row); - void _setCursor(TextLCD::LCDCursor show); + void _setCursor(LCDCursor show); void _setUDC(unsigned char c, char *udc_data); - void _setCursorAndDisplayMode(TextLCD::LCDMode displayMode, TextLCD::LCDCursor cursorType); + void _setCursorAndDisplayMode(LCDMode displayMode, LCDCursor cursorType); -//Low level write operations to LCD controller +/** Low level write operations to LCD controller + */ void _writeNibble(int value); void _writeByte(int value); void _writeCommand(int command); void _writeData(int data); -//Low level writes to LCD Bus (serial or parallel) - void _setEnable(bool value); - void _setRS(bool value); - void _setBL(bool value); - void _setData(int value); - void _setCS(bool value); - -//Low level writes to LCD serial bus only - void _writeBus(); +/** Pure Virtual Low level writes to LCD Bus (serial or parallel) + */ + virtual void _setEnable(bool value) = 0; + virtual void _setRS(bool value) = 0; + virtual void _setBL(bool value) = 0; + virtual void _setData(int value) = 0; - -// Regular mbed pins bus - DigitalOut _rs, _e, _bl, _e2; - BusOut _d; - -// I2C bus - I2C *_i2c; - unsigned char _slaveAddress; - -// SPI bus - SPI *_spi; - DigitalOut _cs; - -//Bus Interface type - _LCDBus _busType; - -// Internal bus mirror value for serial bus only - char _lcd_bus; //Display type LCDType _type; -//Display type +//Display mode LCDMode _currentMode; //Controller type @@ -408,4 +365,104 @@ LCDCursor _currentCursor; }; + +/** Create a TextLCD interface for using regular mbed pins + * + */ +class TextLCD : public TextLCD_Base { +public: + /** Create a TextLCD interface for using regular mbed pins + * + * @param rs Instruction/data control line + * @param e Enable line (clock) + * @param d4-d7 Data lines for using as a 4-bit interface + * @param type Sets the panel size/addressing mode (default = LCD16x2) + * @param bl Backlight control line (optional, default = NC) + * @param e2 Enable2 line (clock for second controller, LCD40x4 only) + * @param ctrl LCD controller (default = HD44780) + */ + TextLCD(PinName rs, PinName e, PinName d4, PinName d5, PinName d6, PinName d7, LCDType type = LCD16x2, PinName bl = NC, PinName e2 = NC, LCDCtrl ctrl = HD44780); + +private: +//Low level writes to LCD Bus (serial or parallel) + virtual void _setEnable(bool value); + virtual void _setRS(bool value); + virtual void _setBL(bool value); + virtual void _setData(int value); + +// Regular mbed pins bus + DigitalOut _rs, _e, _bl, _e2; + BusOut _d; +}; + + + +/** Create a TextLCD interface using an I2C PC8574 portexpander + * + */ +class TextLCD_I2C : public TextLCD_Base { +public: + /** Create a TextLCD interface using an I2C PC8574 portexpander + * + * @param i2c I2C Bus + * @param deviceAddress I2C slave address (PCF8574) + * @param type Sets the panel size/addressing mode (default = LCD16x2) + * @param ctrl LCD controller (default = HD44780) + */ + TextLCD_I2C(I2C *i2c, char deviceAddress, LCDType type = LCD16x2, LCDCtrl ctrl = HD44780); + +private: +//Low level writes to LCD Bus (serial or parallel) + virtual void _setEnable(bool value); + virtual void _setRS(bool value); + virtual void _setBL(bool value); + virtual void _setData(int value); + +//I2C bus + I2C *_i2c; + char _slaveAddress; + +// Internal bus mirror value for serial bus only + char _lcd_bus; + +}; + + + +/** Create a TextLCD interface using an SPI 74595 portexpander + * + */ +class TextLCD_SPI : public TextLCD_Base { +public: + /** Create a TextLCD interface using an SPI 74595 portexpander + * + * @param spi SPI Bus + * @param cs chip select pin (active low) + * @param type Sets the panel size/addressing mode (default = LCD16x2) + * @param ctrl LCD controller (default = HD44780) + */ + TextLCD_SPI(SPI *spi, PinName cs, LCDType type = LCD16x2, LCDCtrl ctrl = HD44780); + + +private: +//Low level writes to LCD Bus (serial or parallel) + virtual void _setEnable(bool value); + virtual void _setRS(bool value); + virtual void _setBL(bool value); + virtual void _setData(int value); + virtual void _setCS(bool value); + +//Low level writes to LCD serial bus only + void _writeBus(); + +// SPI bus + SPI *_spi; + DigitalOut _cs; + +// Internal bus mirror value for serial bus only + char _lcd_bus; + +}; + + #endif