Aleksei Gimbitskii
made some changes in config header file to make this library work with 1602A display and PCF8574AT I2C-bus interface
Fork of
TextLCD
by 
Wim Huiskamp
Revision 26:bd897a001012, committed 2014-05-30
- Comitter:
- wim
- Date:
- Fri May 30 15:05:13 2014 +0000
- Parent:
- 25:6162b31128c9
- Child:
- 27:22d5086f6ba6
- Commit message:
- Added support for MCP23008 I2C expander, added pinmapping for Adafruit I2C and SPI backplane.
Changed in this revision
| TextLCD.cpp | Show annotated file Show diff for this revision Revisions of this file |
| TextLCD.h | Show annotated file Show diff for this revision Revisions of this file |
--- a/TextLCD.cpp Sat May 10 21:34:51 2014 +0000
+++ b/TextLCD.cpp Fri May 30 15:05:13 2014 +0000
@@ -9,6 +9,7 @@
* 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 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
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
@@ -78,9 +79,9 @@
*/
void TextLCD_Base::_initCtrl() {
- this->_setRS(false); // command mode
+ this->_setRS(false); // command mode
- wait_ms(20); // Wait 20ms to ensure powered up
+ wait_ms(20); // Wait 20ms to ensure powered up
// send "Display Settings" 3 times (Only top nibble of 0x30 as we've got 4-bit bus)
for (int i=0; i<3; i++) {
@@ -111,16 +112,34 @@
wait_ms(50);
break;
- case ST7032:
+ case ST7032_3V3:
+ // ST7032 controller: Initialise Voltage booster for VLCD. VDD=3V3
+
_writeByte( 0x1c ); //Internal OSC frequency adjustment 183HZ, bias will be 1/4
wait_us(30);
- _writeByte( 0x73 ); //Contrast control low byte
+ _writeByte( 0x73 ); //Contrast control low byte
wait_us(30);
- _writeByte( 0x57 ); //booster circuit is turn on. /ICON display off. /Contrast control high byte
+ _writeByte( 0x57 ); //booster circuit is turned on. /ICON display off. /Contrast control high byte
wait_us(30);
_writeByte( 0x6c ); //Follower control
wait_us(50);
- _writeByte( 0x0c ); //DISPLAY ON
+ _writeByte( 0x0c ); //DISPLAY ON, not needed
+ wait_us(30);
+ break;
+
+//Check and fix booster disable
+ case ST7032_5V:
+ // ST7032 controller: Disable Voltage booster for VLCD. VDD=5V
+
+ _writeByte( 0x1c ); //Internal OSC frequency adjustment 183HZ, bias will be 1/4
+ wait_us(30);
+ _writeByte( 0x73 ); //Contrast control low byte
+ wait_us(30);
+ _writeByte( 0x57 ); //booster circuit is turned on. /ICON display off. /Contrast control high byte
+ wait_us(30);
+ _writeByte( 0x6c ); //Follower control
+ wait_us(50);
+ _writeByte( 0x0c ); //DISPLAY ON --> remove, done later?
wait_us(30);
break;
@@ -858,10 +877,10 @@
//--------- Start TextLCD_I2C -----------
-/** Create a TextLCD interface using an I2C PC8574 or PCF8574A portexpander
+/** Create a TextLCD interface using an I2C PC8574 (or PCF8574A) or MCP23008 portexpander
*
* @param i2c I2C Bus
- * @param deviceAddress I2C slave address (PCF8574 or PCF8574A, default = 0x40)
+ * @param deviceAddress I2C slave address (PCF8574, PCF8574A or MCP23008, default = 0x40)
* @param type Sets the panel size/addressing mode (default = LCD16x2)
* @param ctrl LCD controller (default = HD44780)
*/
@@ -871,11 +890,35 @@
_slaveAddress = deviceAddress & 0xFE;
+
+#if (MCP23008==1)
+ // MCP23008 portexpander Init
+ _write_register(IODIR, 0x00); // All outputs
+ _write_register(IPOL, 0x00); // No reverse polarity
+ _write_register(GPINTEN, 0x00); // No interrupt
+ _write_register(DEFVAL, 0x00); // Default value to compare against for interrupts
+ _write_register(INTCON, 0x00); // No interrupt on changes
+ _write_register(IOCON, 0x00); // Interrupt polarity
+ _write_register(GPPU, 0x00); // No Pullup
+ _write_register(INTF, 0x00); //
+ _write_register(INTCAP, 0x00); //
+ _write_register(GPIO, 0x00); // Output/Input pins
+ _write_register(OLAT, 0x00); // Output Latch
+
// Init the portexpander bus
_lcd_bus = D_LCD_BUS_DEF;
// write the new data to the portexpander
+ _write_register(GPIO, _lcd_bus);
+#else
+ // PCF8574 of PCF8574A portexpander
+
+ // Init the portexpander bus
+ _lcd_bus = D_LCD_BUS_DEF;
+
+ // write the new data to the portexpander
_i2c->write(_slaveAddress, &_lcd_bus, 1);
+#endif
_init();
@@ -886,34 +929,59 @@
void TextLCD_I2C::_setEnable(bool value) {
if(_ctrl_idx==_LCDCtrl_0) {
- if (value)
+ if (value) {
_lcd_bus |= D_LCD_E; // Set E bit
- else
+ }
+ else {
_lcd_bus &= ~D_LCD_E; // Reset E bit
+ }
}
else {
- if (value)
+ if (value) {
_lcd_bus |= D_LCD_E2; // Set E2 bit
- else
+ }
+ else {
_lcd_bus &= ~D_LCD_E2; // Reset E2bit
- }
+ }
+ }
+
+
+#if (MCP23008==1)
+ // MCP23008 portexpander
+
+ // write the new data to the portexpander
+ _write_register(GPIO, _lcd_bus);
+#else
+ // PCF8574 of PCF8574A portexpander
// write the new data to the I2C portexpander
_i2c->write(_slaveAddress, &_lcd_bus, 1);
-
+#endif
}
// Set RS pin
// Used for mbed pins, I2C bus expander or SPI shiftregister
void TextLCD_I2C::_setRS(bool value) {
- if (value)
+ if (value) {
_lcd_bus |= D_LCD_RS; // Set RS bit
- else
+ }
+ else {
_lcd_bus &= ~D_LCD_RS; // Reset RS bit
+ }
+
+
+#if (MCP23008==1)
+ // MCP23008 portexpander
+
+ // write the new data to the portexpander
+ _write_register(GPIO, _lcd_bus);
+#else
+ // PCF8574 of PCF8574A portexpander
// write the new data to the I2C portexpander
_i2c->write(_slaveAddress, &_lcd_bus, 1);
+#endif
}
@@ -921,13 +989,24 @@
// Used for mbed pins, I2C bus expander or SPI shiftregister
void TextLCD_I2C::_setBL(bool value) {
- if (value)
+ if (value) {
_lcd_bus |= D_LCD_BL; // Set BL bit
- else
+ }
+ else {
_lcd_bus &= ~D_LCD_BL; // Reset BL bit
+ }
+
+#if (MCP23008==1)
+ // MCP23008 portexpander
+
+ // write the new data to the portexpander
+ _write_register(GPIO, _lcd_bus);
+#else
+ // PCF8574 of PCF8574A portexpander
// write the new data to the I2C portexpander
_i2c->write(_slaveAddress, &_lcd_bus, 1);
+#endif
}
@@ -941,31 +1020,56 @@
// Set bit by bit to support any mapping of expander portpins to LCD pins
data = value & 0x0F;
- if (data & 0x01)
+ if (data & 0x01){
_lcd_bus |= D_LCD_D4; // Set Databit
- else
- _lcd_bus &= ~D_LCD_D4; // Reset Databit
+ }
+ else {
+ _lcd_bus &= ~D_LCD_D4; // Reset Databit
+ }
- if (data & 0x02)
+ if (data & 0x02){
_lcd_bus |= D_LCD_D5; // Set Databit
- else
- _lcd_bus &= ~D_LCD_D5; // Reset Databit
+ }
+ else {
+ _lcd_bus &= ~D_LCD_D5; // Reset Databit
+ }
- if (data & 0x04)
+ if (data & 0x04) {
_lcd_bus |= D_LCD_D6; // Set Databit
- else
- _lcd_bus &= ~D_LCD_D6; // Reset Databit
+ }
+ else {
+ _lcd_bus &= ~D_LCD_D6; // Reset Databit
+ }
- if (data & 0x08)
+ if (data & 0x08) {
_lcd_bus |= D_LCD_D7; // Set Databit
- else
- _lcd_bus &= ~D_LCD_D7; // Reset Databit
+ }
+ else {
+ _lcd_bus &= ~D_LCD_D7; // Reset Databit
+ }
+#if (MCP23008==1)
+ // MCP23008 portexpander
+
+ // write the new data to the portexpander
+ _write_register(GPIO, _lcd_bus);
+#else
+ // PCF8574 of PCF8574A portexpander
+
// write the new data to the I2C portexpander
- _i2c->write(_slaveAddress, &_lcd_bus, 1);
+ _i2c->write(_slaveAddress, &_lcd_bus, 1);
+#endif
}
+// Write data to MCP23008 I2C portexpander
+void TextLCD_I2C::_write_register (int reg, int value) {
+ char data[] = {reg, value};
+
+ _i2c->write(_slaveAddress, data, 2);
+
+}
+
//---------- End TextLCD_I2C ------------
@@ -1008,16 +1112,20 @@
void TextLCD_SPI::_setEnable(bool value) {
if(_ctrl_idx==_LCDCtrl_0) {
- if (value)
+ if (value) {
_lcd_bus |= D_LCD_E; // Set E bit
- else
+ }
+ else {
_lcd_bus &= ~D_LCD_E; // Reset E bit
+ }
}
else {
- if (value)
+ if (value) {
_lcd_bus |= D_LCD_E2; // Set E2 bit
- else
+ }
+ else {
_lcd_bus &= ~D_LCD_E2; // Reset E2 bit
+ }
}
// write the new data to the SPI portexpander
@@ -1073,25 +1181,33 @@
// Set bit by bit to support any mapping of expander portpins to LCD pins
data = value & 0x0F;
- if (data & 0x01)
+ if (data & 0x01) {
_lcd_bus |= D_LCD_D4; // Set Databit
- else
+ }
+ else {
_lcd_bus &= ~D_LCD_D4; // Reset Databit
-
- if (data & 0x02)
+ }
+
+ if (data & 0x02) {
_lcd_bus |= D_LCD_D5; // Set Databit
- else
+ }
+ else {
_lcd_bus &= ~D_LCD_D5; // Reset Databit
-
- if (data & 0x04)
+ }
+
+ if (data & 0x04) {
_lcd_bus |= D_LCD_D6; // Set Databit
- else
+ }
+ else {
_lcd_bus &= ~D_LCD_D6; // Reset Databit
-
- if (data & 0x08)
+ }
+
+ if (data & 0x08) {
_lcd_bus |= D_LCD_D7; // Set Databit
- else
- _lcd_bus &= ~D_LCD_D7; // Reset Databit
+ }
+ else {
+ _lcd_bus &= ~D_LCD_D7; // Reset Databit
+ }
// write the new data to the SPI portexpander
_setCS(false);
@@ -1125,7 +1241,7 @@
* @param rs Instruction/data control line
* @param type Sets the panel size/addressing mode (default = LCD16x2)
* @param bl Backlight control line (optional, default = NC)
- * @param ctrl LCD controller (default = ST7032)
+ * @param ctrl LCD controller (default = ST7032_3V3)
*/
TextLCD_SPI_N::TextLCD_SPI_N(SPI *spi, PinName cs, PinName rs, LCDType type, PinName bl, LCDCtrl ctrl) :
TextLCD_Base(type, ctrl),
@@ -1169,8 +1285,9 @@
// Set BL pin
void TextLCD_SPI_N::_setBL(bool value) {
- if (_bl)
+ if (_bl) {
_bl->write(value);
+ }
}
// Write a byte using SPI
--- a/TextLCD.h Sat May 10 21:34:51 2014 +0000
+++ b/TextLCD.h Fri May 30 15:05:13 2014 +0000
@@ -9,6 +9,7 @@
* 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
* 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
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
@@ -34,11 +35,10 @@
#include "mbed.h"
-
/** A TextLCD interface for driving 4-bit HD44780-based LCDs
*
* Currently supports 8x1, 8x2, 12x4, 16x1, 16x2, 16x4, 20x2, 20x4, 24x2, 24x4, 40x2 and 40x4 panels
- * Interface options include direct mbed pins, I2C portexpander (PCF8474, PCF8574A) or SPI bus shiftregister (74595)
+ * Interface options include direct mbed pins, I2C portexpander (PCF8474, PCF8574A, MCP23008) or SPI bus shiftregister (74595)
* Supports some controllers that provide internal DC/DC converters for VLCD or VLED.
*
* @code
@@ -55,7 +55,7 @@
* //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
- * //TextLCD_SPI_N lcd(&spi_lcd, p8, p9); // SPI bus, CS pin, RS pin, LCDType=LCD16x2, BL=NC, LCDTCtrl=ST7032
+ * //TextLCD_SPI_N lcd(&spi_lcd, p8, p9); // SPI bus, CS pin, RS pin, LCDType=LCD16x2, BL=NC, LCDTCtrl=ST7032
*
* int main() {
* lcd.printf("Hello World!\n");
@@ -63,14 +63,23 @@
* @endcode
*/
-//Pin Defines for I2C PCF8574 and SPI 74595 Bus interfaces
+
+//Pin Defines for I2C PCF8574/PCF8574A or MCP23008 and SPI 74595 bus expander interfaces
//LCD and serial portexpanders should be wired accordingly
//
-#if (1)
+//Select Hardware module (one option only)
+#define DEFAULT 1
+#define ADAFRUIT 0
+#define DFROBOT 0
+
+
+#if (DEFAULT==1)
//Definitions for hardware used by WH
+//This hardware supports the I2C bus expander (PCF8574/PCF8574A or MCP23008) and SPI bus expander (74595) interfaces
+//
//Note: LCD RW pin must be connected to GND
// E2 is used for LCD40x4 (second controller)
-// BL may be used for future expansion to control backlight
+// BL may be used to control backlight
#define D_LCD_PIN_D4 0
#define D_LCD_PIN_D5 1
#define D_LCD_PIN_D6 2
@@ -82,12 +91,40 @@
#define D_LCD_PIN_RW D_LCD_PIN_E2
-#else
+//Select I2C Portexpander type (one option only)
+#define PCF8574 1
+#define MCP23008 0
+#endif
+#if (ADAFRUIT==1)
+//Definitions for i2cspilcdbackpack from Adafruit, See http://www.ladyada.net/products/i2cspilcdbackpack
+//This hardware supports both an I2C expander (MCP23008) and an SPI expander (74595) selectable by a jumper.
+//
+//Note: LCD RW pin must be kept LOW
+// E2 is not available on this hardware and so it does not support LCD40x4 (second controller)
+// BL is used to control backlight
+#define D_LCD_PIN_0 0
+#define D_LCD_PIN_RS 1
+#define D_LCD_PIN_E 2
+#define D_LCD_PIN_D4 3
+#define D_LCD_PIN_D5 4
+#define D_LCD_PIN_D6 5
+#define D_LCD_PIN_D7 6
+#define D_LCD_PIN_BL 7
+
+#define D_LCD_PIN_E2 D_LCD_PIN_0
+
+//Force I2C portexpander type
+#define PCF8574 0
+#define MCP23008 1
+#endif
+
+#if (DFROBOT==1)
//Definitions for LCD2004 Module from DFROBOT, See http://arduino-info.wikispaces.com/LCD-Blue-I2C
-//This hardware is different from earlier/different Arduino I2C LCD displays
+//This hardware uses PCF8574 and is different from earlier/different Arduino I2C LCD displays
+//
//Note: LCD RW pin must be kept LOW
-// E2 is not available on default Arduino hardware and does not support LCD40x4 (second controller)
+// E2 is not available on default Arduino hardware and so it does not support LCD40x4 (second controller)
// BL is used to control backlight
#define D_LCD_PIN_RS 0
#define D_LCD_PIN_RW 1
@@ -99,9 +136,13 @@
#define D_LCD_PIN_D7 7
#define D_LCD_PIN_E2 D_LCD_PIN_RW
+
+//Force I2C portexpander type
+#define PCF8574 1
+#define MCP23008 0
#endif
-//Bitpattern Defines for I2C PCF8574 and SPI 74595 Bus
+//Bitpattern Defines for I2C PCF8574/PCF8574A, MCP23008 and SPI 74595 Bus expanders
//
#define D_LCD_D4 (1<<D_LCD_PIN_D4)
#define D_LCD_D5 (1<<D_LCD_PIN_D5)
@@ -113,10 +154,56 @@
#define D_LCD_BL (1<<D_LCD_PIN_BL)
//#define D_LCD_RW (1<<D_LCD_PIN_RW)
-
#define D_LCD_BUS_MSK (D_LCD_D4 | D_LCD_D5 | D_LCD_D6 | D_LCD_D7)
#define D_LCD_BUS_DEF 0x00
+/* PCF8574/PCF8574A I2C portexpander slave address */
+#define PCF8574_SA0 0x40
+#define PCF8574_SA1 0x42
+#define PCF8574_SA2 0x44
+#define PCF8574_SA3 0x46
+#define PCF8574_SA4 0x48
+#define PCF8574_SA5 0x4A
+#define PCF8574_SA6 0x4C
+#define PCF8574_SA7 0x4E
+
+#define PCF8574A_SA0 0x70
+#define PCF8574A_SA1 0x72
+#define PCF8574A_SA2 0x74
+#define PCF8574A_SA3 0x76
+#define PCF8574A_SA4 0x78
+#define PCF8574A_SA5 0x7A
+#define PCF8574A_SA6 0x7C
+#define PCF8574A_SA7 0x7E
+
+/* MCP23008 I2C portexpander slave address */
+#define MCP23008_SA0 0x40
+#define MCP23008_SA1 0x42
+#define MCP23008_SA2 0x44
+#define MCP23008_SA3 0x46
+#define MCP23008_SA4 0x48
+#define MCP23008_SA5 0x4A
+#define MCP23008_SA6 0x4C
+#define MCP23008_SA7 0x4E
+
+
+/* MCP23008 I2C portexpander internal registers */
+#define IODIR 0x00
+#define IPOL 0x01
+#define GPINTEN 0x02
+#define DEFVAL 0x03
+#define INTCON 0x04
+#define IOCON 0x05
+#define GPPU 0x06
+#define INTF 0x07
+#define INTCAP 0x08
+#define GPIO 0x09
+#define OLAT 0x0A
+
+
+/* ST7032I I2C slave address */
+#define ST7032_SA 0x7C
+
/** Some sample User Defined Chars 5x7 dots */
const char udc_ae[] = {0x00, 0x00, 0x1B, 0x05, 0x1F, 0x14, 0x1F, 0x00}; //æ
@@ -164,7 +251,7 @@
/** A TextLCD interface for driving 4-bit HD44780-based LCDs
*
* @brief Currently supports 8x1, 8x2, 12x2, 12x4, 16x1, 16x2, 16x4, 20x2, 20x4, 24x2, 24x4, 40x2 and 40x4 panels
- * Interface options include direct mbed pins, I2C portexpander (PCF8474, PCF8574A) or SPI bus shiftregister (74595)
+ * Interface options include direct mbed pins, I2C portexpander (PCF8474, PCF8574A) or SPI bus shiftregister (74595) and some native I2C or SPI devices
*
*/
class TextLCD_Base : public Stream {
@@ -191,10 +278,11 @@
/** LCD Controller Device */
enum LCDCtrl {
- HD44780, /**< HD44780 (default) */
- WS0010, /**< WS0010 OLED Controller */
- ST7036, /**< ST7036 */
- ST7032 /**< ST7032 */
+ HD44780, /**< HD44780 (default) */
+ WS0010, /**< WS0010 OLED Controller */
+ ST7036, /**< ST7036 */
+ ST7032_3V3, /**< ST7032 3V3 with Booster */
+ ST7032_5V /**< ST7032 5V no Booster */
};
@@ -424,26 +512,29 @@
//--------- Start TextLCD_I2C -----------
-/** Create a TextLCD interface using an I2C PC8574 or PCF8574A portexpander
+/** Create a TextLCD interface using an I2C PCF8574 (or PCF8574A) or MCP23008 portexpander
*
*/
class TextLCD_I2C : public TextLCD_Base {
public:
- /** Create a TextLCD interface using an I2C PC8574 or PCF8574A portexpander
+ /** 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 = 0x40)
+ * @param deviceAddress I2C slave address (PCF8574 or PCF8574A, default = PCF8574_SA0 = 0x40)
* @param type Sets the panel size/addressing mode (default = LCD16x2)
* @param ctrl LCD controller (default = HD44780)
*/
- TextLCD_I2C(I2C *i2c, char deviceAddress = 0x40, LCDType type = LCD16x2, LCDCtrl ctrl = HD44780);
+ TextLCD_I2C(I2C *i2c, char deviceAddress = PCF8574_SA0, 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 _setData(int value);
+
+// Write data to MCP23008 I2C portexpander
+ void _write_register (int reg, int value);
//I2C bus
I2C *_i2c;
@@ -500,8 +591,8 @@
//---------- End TextLCD_SPI ------------
-//--------- Start TextLCD_NativeSPI -----------
+//--------- Start TextLCD_SPI_N -----------
/** Create a TextLCD interface using a controller with native SPI interface
*
@@ -515,9 +606,9 @@
* @param rs Instruction/data control line
* @param type Sets the panel size/addressing mode (default = LCD16x2)
* @param bl Backlight control line (optional, default = NC)
- * @param ctrl LCD controller (default = ST7032)
+ * @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);
+ TextLCD_SPI_N(SPI *spi, PinName cs, PinName rs, LCDType type = LCD16x2, PinName bl = NC, LCDCtrl ctrl = ST7032_3V3);
virtual ~TextLCD_SPI_N(void);
private:
@@ -537,4 +628,40 @@
//---------- End TextLCD_SPI_N ------------
+
+//--------- Start TextLCD_I2C_N -----------
+
+/** 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 = 0x)
+ * @param type Sets the panel size/addressing mode (default = LCD16x2)
+ * @param ctrl LCD controller (default = ST7032_3V3)
+ */
+ TextLCD_I2C_N(I2C *i2c, char deviceAddress = 0x40, LCDType type = LCD16x2, LCDCtrl ctrl = ST7032_3V3);
+ virtual ~TextLCD_I2C_N(void);
+
+private:
+ virtual void _setEnable(bool value);
+ virtual void _setRS(bool value);
+ virtual void _setBL(bool value);
+ virtual void _setData(int value);
+ virtual void _writeByte(int value);
+
+//I2C bus
+ I2C *_i2c;
+ char _slaveAddress;
+
+// Internal bus mirror value for serial bus only
+ char _lcd_bus;
+};
+
+//---------- End TextLCD_I2C_N ------------
+
+
#endif