Wim Huiskamp
Updated for more display types. Fixed memoryaddress confusion in address() method. Added new getAddress() method. Added support for UDCs, Backlight control and other features such as control through I2C and SPI port expanders and controllers with native I2C and SPI interfaces. Refactored to fix issue with pins that are default declared as NC.
Dependents: GPSDevice TestTextLCD SD to Flash Data Transfer DrumMachine ... more
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TextLCD
by 
Simon Ford
Example
Hello World! for the TextLCD
#include "mbed.h"
#include "TextLCD.h"
// Host PC Communication channels
Serial pc(USBTX, USBRX); // tx, rx
// I2C Communication
I2C i2c_lcd(p28,p27); // SDA, SCL
// SPI Communication
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_SPI lcd(&spi_lcd, p8, TextLCD::LCD40x4); // SPI bus, 74595 expander, 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
//TextLCD_SPI_N lcd(&spi_lcd, p8, p9); // SPI bus, CS pin, RS pin, LCDType=LCD16x2, BL=NC, LCDTCtrl=ST7032_3V3
//TextLCD_I2C_N lcd(&i2c_lcd, ST7032_SA, TextLCD::LCD16x2, NC, TextLCD::ST7032_3V3); // I2C bus, Slaveaddress, LCD Type, BL=NC, LCDTCtrl=ST7032_3V3
int main() {
pc.printf("LCD Test. Columns=%d, Rows=%d\n\r", lcd.columns(), lcd.rows());
for (int row=0; row<lcd.rows(); row++) {
int col=0;
pc.printf("MemAddr(Col=%d, Row=%d)=0x%02X\n\r", col, row, lcd.getAddress(col, row));
// lcd.putc('-');
lcd.putc('0' + row);
for (col=1; col<lcd.columns()-1; col++) {
lcd.putc('*');
}
pc.printf("MemAddr(Col=%d, Row=%d)=0x%02X\n\r", col, row, lcd.getAddress(col, row));
lcd.putc('+');
}
// Show cursor as blinking character
lcd.setCursor(TextLCD::CurOff_BlkOn);
// Set and show user defined characters. A maximum of 8 UDCs are supported by the HD44780.
// They are defined by a 5x7 bitpattern.
lcd.setUDC(0, (char *) udc_0); // Show |>
lcd.putc(0);
lcd.setUDC(1, (char *) udc_1); // Show <|
lcd.putc(1);
}
Handbook page
More info is here
Diff: TextLCD.h
- Revision:
- 37:ce348c002929
- Parent:
- 36:9f5f86dfd44a
- Child:
- 38:cbe275b0b647
--- a/TextLCD.h Tue Nov 25 19:21:18 2014 +0000
+++ b/TextLCD.h Sun Mar 29 13:08:03 2015 +0000
@@ -1,4 +1,4 @@
-/* mbed TextLCD Library, for a 4-bit LCD based on HD44780
+/* mbed TextLCD Library, for LCDs based on HD44780 controllers
* Copyright (c) 2007-2010, sford, http://mbed.org
* 2013, v01: WH, Added LCD types, fixed LCD address issues, added Cursor and UDCs
* 2013, v02: WH, Added I2C and SPI bus interfaces
@@ -17,6 +17,7 @@
* added 16 UDCs for supported devices (eg PCF2103), moved UDC defines to TextLCD_UDC file, added TextLCD_Config.h for feature and footprint settings.
* 2014, v15: WH, Added AC780 support, added I2C expander modules, fixed setBacklight() for inverted logic modules. Fixed bug in LCD_SPI_N define
* 2014, v16: WH, Added ST7070 and KS0073 support, added setIcon(), clrIcon() and setInvert() method for supported devices
+ * 2015, v17: WH, Clean up low-level _writeCommand() and _writeData(), Added support for alternative fonttables (eg PCF21XX), Added ST7066_ACM controller for ACM1602 module
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
@@ -130,21 +131,27 @@
#define LCD_C_CTR 0x00020000 /*Contrast Control */
#define LCD_C_ICN 0x00040000 /*Icons */
#define LCD_C_PDN 0x00080000 /*Power Down */
+// Fonttable encoded in b15..b12
+#define LCD_C_FNT_MSK 0x0000F000
+#define LCD_C_FT0 0x00000000 /*Default */
+#define LCD_C_FT1 0x00001000 /*Font1 */
+#define LCD_C_FT2 0x00002000 /*Font2 */
/** A TextLCD interface for driving 4-bit HD44780-based LCDs
*
* @brief Currently supports 8x1, 8x2, 12x2, 12x3, 12x4, 16x1, 16x2, 16x3, 16x4, 20x2, 20x4, 24x2, 24x4, 40x2 and 40x4 panels
- * Interface options include direct mbed pins, I2C portexpander (PCF8474/PCF8574A or MCP23008) or SPI bus shiftregister (74595) and some native I2C or SPI devices
- *
+ * Interface options include direct mbed pins, I2C portexpander (PCF8474/PCF8574A or MCP23008) or
+ * SPI bus shiftregister (74595) or native I2C or SPI interfaces for some supported devices.
*/
class TextLCD_Base : public Stream {
-//class TextLCD_Base{
+//class TextLCD_Base {
-//Unfortunately this #define selection breaks Doxygen !!!
+//Unfortunately the following #define selection breaks Doxygen !!!
+//Add it manually when you want to disable the Stream inheritance
//#if (LCD_PRINTF == 1)
//class TextLCD_Base : public Stream {
//#else
-//class TextLCD_Base{
+//class TextLCD_Base {
//#endif
public:
@@ -199,28 +206,32 @@
/** LCD Controller Device */
enum LCDCtrl {
- HD44780 = 0 | LCD_C_PAR, /**< HD44780 or full equivalent (default) */
- WS0010 = 1 | (LCD_C_PAR | LCD_C_SPI3_10 | LCD_C_PDN), /**< WS0010/RS0010 OLED Controller, 4/8 bit, SPI3 */
- ST7036_3V3 = 2 | (LCD_C_PAR | LCD_C_SPI4 | LCD_C_I2C | LCD_C_BST | LCD_C_CTR), /**< ST7036 3V3 with Booster, 4/8 bit, SPI4, I2C */
- ST7036_5V = 3 | (LCD_C_PAR | LCD_C_SPI4 | LCD_C_I2C | LCD_C_BST | LCD_C_CTR), /**< ST7036 5V no Booster, 4/8 bit, SPI4, I2C */
- ST7032_3V3 = 4 | (LCD_C_PAR | LCD_C_SPI4 | LCD_C_I2C | LCD_C_BST | LCD_C_CTR), /**< ST7032 3V3 with Booster, 4/8 bit, SPI4, I2C */
- ST7032_5V = 5 | (LCD_C_PAR | LCD_C_SPI4 | LCD_C_I2C | LCD_C_CTR), /**< ST7032 5V no Booster, 4/8 bit, SPI4, I2C */
- KS0078 = 6 | (LCD_C_PAR | LCD_C_SPI3_24 | LCD_C_PDN), /**< KS0078 24x4 support, 4/8 bit, SPI3 */
- PCF2103_3V3 = 7 | (LCD_C_PAR | LCD_C_I2C), /**< PCF2103 3V3 no Booster, 4/8 bit, I2C */
- PCF2113_3V3 = 8 | (LCD_C_PAR | LCD_C_I2C | LCD_C_BST | LCD_C_CTR), /**< PCF2113 3V3 with Booster, 4/8 bit, I2C */
- PCF2116_3V3 = 9 | (LCD_C_PAR | LCD_C_I2C | LCD_C_BST), /**< PCF2116 3V3 with Booster, 4/8 bit, I2C */
- PCF2116_5V = 10 | (LCD_C_PAR | LCD_C_I2C), /**< PCF2116 5V no Booster, 4/8 bit, I2C */
- PCF2119_3V3 = 11 | (LCD_C_PAR | LCD_C_I2C | LCD_C_BST | LCD_C_CTR), /**< PCF2119 3V3 with Booster, 4/8 bit, I2C */
-// PCF2119_5V = 12 | (LCD_C_PAR | LCD_C_I2C), /**< PCF2119 5V no Booster, 4/8 bit, I2C */
- AIP31068 = 13 | (LCD_C_SPI3_9 | LCD_C_I2C | LCD_C_BST), /**< AIP31068 I2C, SPI3 */
- SSD1803_3V3 = 14 | (LCD_C_PAR | LCD_C_SPI3_24 | LCD_C_I2C | LCD_C_BST | LCD_C_CTR | LCD_C_PDN), /**< SSD1803 3V3 with Booster, 4/8 bit, I2C, SPI3 */
-// SSD1803_5V = 15 | (LCD_C_PAR | LCD_C_SPI3_24 | LCD_C_I2C | LCD_C_BST | LCD_C_CTR | LCD_C_PDN), /**< SSD1803 3V3 with Booster, 4/8 bit, I2C, SPI3 */
- US2066_3V3 = 16 | (LCD_C_PAR | LCD_C_SPI3_24 | LCD_C_I2C | LCD_C_CTR | LCD_C_PDN), /**< US2066/SSD1311 3V3, 4/8 bit, I2C, SPI3 */
- PT6314 = 17 | (LCD_C_PAR | LCD_C_SPI3_16 | LCD_C_CTR), /**< PT6314 VFD, 4/8 bit, SPI3 */
- AC780 = 18 | (LCD_C_PAR | LCD_C_SPI4 | LCD_C_I2C | LCD_C_PDN), /**< AC780/KS0066i 4/8 bit, SPI, I2C */
-// WS0012 = 19 | (LCD_C_PAR | LCD_C_SPI3_10 | LCD_C_I2C | LCD_C_PDN), /**< WS0012 4/8 bit, SPI, I2C */
- ST7070 = 20 | (LCD_C_PAR | LCD_C_SPI3_8 | LCD_C_SPI4), /**< ST7070 4/8 bit, SPI3 */
- KS0073 = 21 | (LCD_C_PAR | LCD_C_SPI3_24 | LCD_C_PDN) /**< KS0073 4/8 bit, SPI3 */
+ HD44780 = 0 | LCD_C_PAR, /**< HD44780 or full equivalent (default) */
+ AC780 = 1 | (LCD_C_PAR | LCD_C_SPI4 | LCD_C_I2C | LCD_C_PDN), /**< AC780/KS0066i 4/8 bit, SPI, I2C */
+ AIP31068 = 2 | (LCD_C_SPI3_9 | LCD_C_I2C | LCD_C_BST), /**< AIP31068 I2C, SPI3 */
+ KS0073 = 3 | (LCD_C_PAR | LCD_C_SPI3_24 | LCD_C_PDN), /**< KS0073 4/8 bit, SPI3 */
+ KS0078 = 4 | (LCD_C_PAR | LCD_C_SPI3_24 | LCD_C_PDN), /**< KS0078 24x4 support, 4/8 bit, SPI3 */
+ PCF2103_3V3 = 5 | (LCD_C_PAR | LCD_C_I2C), /**< PCF2103 3V3 no Booster, 4/8 bit, I2C */
+ PCF2113_3V3 = 6 | (LCD_C_PAR | LCD_C_I2C | LCD_C_BST | LCD_C_CTR), /**< PCF2113 3V3 with Booster, 4/8 bit, I2C */
+ PCF2116_3V3 = 7 | (LCD_C_PAR | LCD_C_I2C | LCD_C_BST), /**< PCF2116 3V3 with Booster, 4/8 bit, I2C */
+ PCF2116_5V = 8 | (LCD_C_PAR | LCD_C_I2C), /**< PCF2116 5V no Booster, 4/8 bit, I2C */
+ PCF2116C_5V = 9 | (LCD_C_PAR | LCD_C_I2C | LCD_C_BST) | LCD_C_FT1, /**< PCF2116C 3V3 with Booster, 4/8 bit, I2C */
+ PCF2119_3V3 = 10 | (LCD_C_PAR | LCD_C_I2C | LCD_C_BST | LCD_C_CTR), /**< PCF2119 3V3 with Booster, 4/8 bit, I2C */
+// PCF2119C_3V3 = 11 | (LCD_C_PAR | LCD_C_I2C | LCD_C_BST | LCD_C_CTR), LCD_C_FT1, /**< PCF2119K 3V3 with Booster, 4/8 bit, I2C */
+// PCF2119_5V = 12 | (LCD_C_PAR | LCD_C_I2C), /**< PCF2119 5V no Booster, 4/8 bit, I2C */
+ PT6314 = 13 | (LCD_C_PAR | LCD_C_SPI3_16 | LCD_C_CTR), /**< PT6314 VFD, 4/8 bit, SPI3 */
+ SSD1803_3V3 = 14 | (LCD_C_PAR | LCD_C_SPI3_24 | LCD_C_I2C | LCD_C_BST | LCD_C_CTR | LCD_C_PDN), /**< SSD1803 3V3 with Booster, 4/8 bit, I2C, SPI3 */
+// SSD1803_5V = 15 | (LCD_C_PAR | LCD_C_SPI3_24 | LCD_C_I2C | LCD_C_BST | LCD_C_CTR | LCD_C_PDN), /**< SSD1803 3V3 with Booster, 4/8 bit, I2C, SPI3 */
+ ST7032_3V3 = 16 | (LCD_C_PAR | LCD_C_SPI4 | LCD_C_I2C | LCD_C_BST | LCD_C_CTR), /**< ST7032 3V3 with Booster, 4/8 bit, SPI4, I2C */
+ ST7032_5V = 17 | (LCD_C_PAR | LCD_C_SPI4 | LCD_C_I2C | LCD_C_CTR), /**< ST7032 5V no Booster, 4/8 bit, SPI4, I2C */
+ ST7036_3V3 = 18 | (LCD_C_PAR | LCD_C_SPI4 | LCD_C_I2C | LCD_C_BST | LCD_C_CTR), /**< ST7036 3V3 with Booster, 4/8 bit, SPI4, I2C */
+ ST7036_5V = 19 | (LCD_C_PAR | LCD_C_SPI4 | LCD_C_I2C | LCD_C_BST | LCD_C_CTR), /**< ST7036 5V no Booster, 4/8 bit, SPI4, I2C */
+ ST7066_ACM = 20 | (LCD_C_PAR | LCD_C_I2C), /**< ST7066 4/8 bit, I2C on ACM1602 using a PIC */
+ ST7070 = 21 | (LCD_C_PAR | LCD_C_SPI3_8 | LCD_C_SPI4), /**< ST7070 4/8 bit, SPI3 */
+ US2066_3V3 = 22 | (LCD_C_PAR | LCD_C_SPI3_24 | LCD_C_I2C | LCD_C_CTR | LCD_C_PDN), /**< US2066/SSD1311 3V3, 4/8 bit, I2C, SPI3 */
+ WS0010 = 23 | (LCD_C_PAR | LCD_C_SPI3_10 | LCD_C_PDN) /**< WS0010/RS0010 OLED Controller, 4/8 bit, SPI3 */
+// WS0012 = 24 | (LCD_C_PAR | LCD_C_SPI3_10 | LCD_C_I2C | LCD_C_PDN), /**< WS0012 4/8 bit, SPI, I2C */
+
};
@@ -266,6 +277,14 @@
};
+ /** Convert ASCII character code to the LCD fonttable code
+ *
+ * @param c The character to write to the display
+ * @return The character code for the specific fonttable of the controller
+ */
+ int ASCII_2_LCD (int c);
+
+
#if(LCD_PRINTF != 1)
/** Write a character to the LCD
*
@@ -436,7 +455,7 @@
_LCDCtrl_1, /*< Secondary */
};
- /** LCD Datalength control to select between 4 or 8 bit data/commands, used for native Serial interface */
+ /** LCD Datalength control to select between 4 or 8 bit data/commands, mainly used for native Serial interface */
enum _LCDDatalength {
_LCD_DL_4 = 0x00, /**< Datalength 4 bit */
_LCD_DL_8 = 0x10 /**< Datalength 8 bit */
@@ -529,17 +548,18 @@
virtual void _writeByte(int value);
//Display type
- LCDType _type;
- int _nr_cols;
+ LCDType _type; // Display type
+ int _nr_cols;
int _nr_rows;
- int _addr_mode;
-
+ int _addr_mode; // Addressing mode of LCDType, defines relation between display row,col and controller memory address
+
//Display mode
LCDMode _currentMode;
//Controller type
- LCDCtrl _ctrl;
-
+ LCDCtrl _ctrl; // Controller type
+ int _font; // ASCII character fonttable
+
//Controller select, mainly used for LCD40x4
_LCDCtrl_Idx _ctrl_idx;
@@ -607,7 +627,6 @@
*/
virtual void _setData(int value);
-
/** Regular mbed pins bus
*/
DigitalOut _rs, _e;
@@ -616,7 +635,7 @@
/** Optional Hardware pins for the Backlight and LCD40x4 device
* Default PinName value is NC, must be used as pointer to avoid issues with mbed lib and DigitalOut pins
*/
- DigitalOut *_bl, *_e2;
+ DigitalOut *_bl, *_e2;
};
//----------- End TextLCD ---------------
@@ -633,7 +652,7 @@
/** Create a TextLCD interface using an I2C PCF8574 (or PCF8574A) or MCP23008 portexpander
*
* @param i2c I2C Bus
- * @param deviceAddress I2C slave address (PCF8574 or PCF8574A, default = PCF8574_SA0 = 0x40)
+ * @param deviceAddress I2C slave address (PCF8574 (or PCF8574A) or MCP23008 portexpander, default = PCF8574_SA0 = 0x40)
* @param type Sets the panel size/addressing mode (default = LCD16x2)
* @param ctrl LCD controller (default = HD44780)
*/
@@ -641,6 +660,13 @@
private:
+/** Place the Enable bit in the databus shadowvalue
+ * Used for mbed I2C portexpander
+ * @param value data to write
+ * @return none
+ */
+ void _setEnableBit(bool value);
+
/** Implementation of pure Virtual Low level writes to LCD Bus (serial expander)
* Set the Enable pin.
*/
@@ -656,24 +682,38 @@
*/
virtual void _setBL(bool value);
+/** Place the 4bit data in the databus shadowvalue
+ * Used for mbed I2C portexpander
+ * @param value data to write
+ * @return none
+ */
+ void _setDataBits(int value);
+
/** Implementation of pure Virtual Low level writes to LCD Bus (serial expander)
* Set the databus value (4 bit).
*/
virtual void _setData(int value);
-
+
+//New optimized
+//Test faster _writeByte 0.11s vs 0.27s for a 20x4 fillscreen (PCF8574)
+//Test faster _writeByte 0.14s vs 0.34s for a 20x4 fillscreen (MCP23008)
+
+/** Low level writes to LCD serial bus expander
+ */
+ virtual void _writeByte(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);
+ void _writeRegister (int reg, int value);
//I2C bus
I2C *_i2c;
char _slaveAddress;
-// Internal bus mirror value for serial bus only
+// Internal bus shadow value for serial bus only
char _lcd_bus;
};
#endif /* I2C Expander PCF8574/MCP23008 */
@@ -718,28 +758,82 @@
/** 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 (serial expander)
-// */
-// void _writeBus();
+ virtual void _setData(int value);
// SPI bus
SPI *_spi;
DigitalOut _cs;
-// Internal bus mirror value for serial bus only
+// Internal bus shadow value for serial bus only
char _lcd_bus;
};
#endif /* SPI Expander SN74595 */
//---------- End TextLCD_SPI ------------
+//--------- Start TextLCD_I2C_N -----------
+#if(LCD_I2C_N == 1) /* Native I2C */
+
+/** Create a TextLCD interface using a controller with native I2C interface
+ *
+ */
+class TextLCD_I2C_N : public TextLCD_Base {
+public:
+ /** Create a TextLCD interface using a controller with native I2C interface
+ *
+ * @param i2c I2C Bus
+ * @param deviceAddress I2C slave address (default = ST7032_SA = 0x7C)
+ * @param type Sets the panel size/addressing mode (default = LCD16x2)
+ * @param bl Backlight control line (optional, default = NC)
+ * @param ctrl LCD controller (default = ST7032_3V3)
+ */
+ TextLCD_I2C_N(I2C *i2c, char deviceAddress = ST7032_SA, LCDType type = LCD16x2, PinName bl = NC, LCDCtrl ctrl = ST7032_3V3);
+
+ /** Destruct a TextLCD interface using a controller with native I2C interface
+ */
+ 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;
+
+// controlbyte to select between data and command. Internal shadow value for serial bus only
+ char _controlbyte;
+
+//Backlight
+ DigitalOut *_bl;
+
+};
+#endif /* Native I2C */
+//---------- End TextLCD_I2C_N ------------
+
+
//--------- Start TextLCD_SPI_N -----------
#if(LCD_SPI_N == 1) /* Native SPI bus */
@@ -758,6 +852,9 @@
* @param ctrl LCD controller (default = ST7032_3V3)
*/
TextLCD_SPI_N(SPI *spi, PinName cs, PinName rs, LCDType type = LCD16x2, PinName bl = NC, LCDCtrl ctrl = ST7032_3V3);
+
+ /** Destruct a TextLCD interface using a controller with native SPI4 interface
+ */
virtual ~TextLCD_SPI_N(void);
private:
@@ -800,7 +897,10 @@
//-------- Start TextLCD_SPI_N_3_8 --------
#if(LCD_SPI_N_3_8 == 1) /* Native SPI bus */
-
+/** Create a TextLCD interface using a controller with native SPI3 8 bits interface
+ * This mode is supported by ST7070.
+ *
+ */
class TextLCD_SPI_N_3_8 : public TextLCD_Base {
public:
/** Create a TextLCD interface using a controller with a native SPI3 8 bits interface
@@ -815,6 +915,8 @@
*/
TextLCD_SPI_N_3_8(SPI *spi, PinName cs, LCDType type = LCD16x2, PinName bl = NC, LCDCtrl ctrl = ST7070);
+ /** Destruct a TextLCD interface using a controller with native SPI3_8 interface
+ */
virtual ~TextLCD_SPI_N_3_8(void);
private:
@@ -847,7 +949,7 @@
SPI *_spi;
DigitalOut _cs;
-// controlbyte to select between data and command. Internal value for serial bus only
+// controlbyte to select between data and command. Internal shadow value for serial bus only
char _controlbyte;
//Backlight
@@ -858,7 +960,6 @@
//------- End TextLCD_SPI_N_3_8 -----------
-
//------- Start TextLCD_SPI_N_3_9 ---------
#if(LCD_SPI_N_3_9 == 1) /* Native SPI bus */
//Code checked out on logic analyser. Not yet tested on hardware..
@@ -879,6 +980,9 @@
* @param ctrl LCD controller (default = AIP31068)
*/
TextLCD_SPI_N_3_9(SPI *spi, PinName cs, LCDType type = LCD16x2, PinName bl = NC, LCDCtrl ctrl = AIP31068);
+
+ /** Destruct a TextLCD interface using a controller with native SPI3_9 interface
+ */
virtual ~TextLCD_SPI_N_3_9(void);
private:
@@ -911,7 +1015,7 @@
SPI *_spi;
DigitalOut _cs;
-// controlbyte to select between data and command. Internal value for serial bus only
+// controlbyte to select between data and command. Internal shadow value for serial bus only
char _controlbyte;
//Backlight
@@ -940,6 +1044,9 @@
* @param ctrl LCD controller (default = AIP31068)
*/
TextLCD_SPI_N_3_10(SPI *spi, PinName cs, LCDType type = LCD16x2, PinName bl = NC, LCDCtrl ctrl = AIP31068);
+
+ /** Destruct a TextLCD interface using a controller with native SPI3_10 interface
+ */
virtual ~TextLCD_SPI_N_3_10(void);
private:
@@ -972,7 +1079,7 @@
SPI *_spi;
DigitalOut _cs;
-// controlbyte to select between data and command. Internal value for serial bus only
+// controlbyte to select between data and command. Internal shadow value for serial bus only
char _controlbyte;
//Backlight
@@ -985,7 +1092,6 @@
//------- Start TextLCD_SPI_N_3_16 ---------
#if(LCD_SPI_N_3_16 == 1) /* Native SPI bus */
-//Code checked out on logic analyser. Not yet tested on hardware..
/** Create a TextLCD interface using a controller with native SPI3 16 bits interface
*
@@ -1001,6 +1107,9 @@
* @param ctrl LCD controller (default = PT6314)
*/
TextLCD_SPI_N_3_16(SPI *spi, PinName cs, LCDType type = LCD16x2, PinName bl = NC, LCDCtrl ctrl = PT6314);
+
+ /** Destruct a TextLCD interface using a controller with native SPI3_16 interface
+ */
virtual ~TextLCD_SPI_N_3_16(void);
private:
@@ -1033,7 +1142,7 @@
SPI *_spi;
DigitalOut _cs;
-// controlbyte to select between data and command. Internal value for serial bus only
+// controlbyte to select between data and command. Internal shadow value for serial bus only
char _controlbyte;
//Backlight
@@ -1062,6 +1171,9 @@
* @param ctrl LCD controller (default = SSD1803)
*/
TextLCD_SPI_N_3_24(SPI *spi, PinName cs, LCDType type = LCD16x2, PinName bl = NC, LCDCtrl ctrl = SSD1803_3V3);
+
+ /** Destruct a TextLCD interface using a controller with native SPI3_24 interface
+ */
virtual ~TextLCD_SPI_N_3_24(void);
private:
@@ -1103,64 +1215,4 @@
#endif /* Native SPI bus */
//-------- End TextLCD_SPI_N_3_24 ----------
-
-//--------- Start TextLCD_I2C_N -----------
-#if(LCD_I2C_N == 1) /* Native I2C */
-
-/** Create a TextLCD interface using a controller with native I2C interface
- *
- */
-class TextLCD_I2C_N : public TextLCD_Base {
-public:
- /** Create a TextLCD interface using a controller with native I2C interface
- *
- * @param i2c I2C Bus
- * @param deviceAddress I2C slave address (default = ST7032_SA = 0x7C)
- * @param type Sets the panel size/addressing mode (default = LCD16x2)
- * @param bl Backlight control line (optional, default = NC)
- * @param ctrl LCD controller (default = ST7032_3V3)
- */
- TextLCD_I2C_N(I2C *i2c, char deviceAddress = ST7032_SA, LCDType type = LCD16x2, PinName bl = NC, LCDCtrl ctrl = ST7032_3V3);
- 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;
-
-// controlbyte to select between data and command. Internal value for serial bus only
- char _controlbyte;
-
-//Backlight
- DigitalOut *_bl;
-
-};
-#endif /* Native I2C */
-//---------- End TextLCD_I2C_N ------------
-
#endif
HD44780 and compatible Text LCD controllers (4bit, I2C or SPI I/F)