1 files changed, 216 insertions, 0 deletions
diff --git a/source/qFix/qfixLCD.h b/source/qFix/qfixLCD.h
new file mode 100644
index 0000000..9ecd93f
--- /dev/null
+++ b/source/qFix/qfixLCD.h
@@ -0,0 +1,216 @@
+//------------------------------------------------------------------
+// qfixLCD.h
+//
+// This file contains the class LCD which represents the
+// LCD display.
+//
+// Copyright 2004 by KTB mechatronics GmbH
+// Author: Stefan Enderle
+//------------------------------------------------------------------
+
+#ifndef qfixLCD_h
+#define qfixLCD_h
+
+
+#include "qfixI2C.h"
+#include "qfixI2CDefs.h"
+#include "string.h"
+
+
+static const uint8_t LCD_CMD_CHANGEID   = 0;
+static const uint8_t LCD_CMD_CLEAR      = 1;
+static const uint8_t LCD_CMD_PRINTSTR   = 2;
+static const uint8_t LCD_CMD_PRINTSTRXY = 3;
+static const uint8_t LCD_CMD_LIGHTON    = 4;
+static const uint8_t LCD_CMD_LIGHTOFF   = 5;
+static const uint8_t LCD_CMD_PRINTINT   = 6;
+static const uint8_t LCD_CMD_PRINTINTXY = 7;
+
+
+
+/**
+* \class LCD
+* \brief Represents the qfix LC-display.
+* \author Stefan Enderle
+*
+* The class LCD represents the
+* physical LC-display and can be used to output text.
+* The I2C bus is completely abstracted.
+*/
+class LCD
+{
+private:
+  I2C i2c;
+  uint8_t id;
+
+public:
+  /** Default constructor. If only one LC-display is used,
+  * this constructor can be used. It sets the internal ID to 0.
+  */
+  LCD();
+
+  /** Constructor with given ID.
+  * If two or more LC-displays are used,
+  * this constructor must be used. It sets the internal ID to the given value.
+  */
+  LCD(uint8_t ID);
+
+  /** Change logical device ID
+  */
+  void changeID(uint8_t newID);
+
+  /** Clears the display
+  */
+  void clear();
+
+  /** prints the string data at the current cursor position.
+   *  The string must end with 0.
+  */
+  void print(char* data);
+
+  /** Prints the string data at position line/col. The string
+   * must end with 0.
+  */
+  void print(uint8_t line, uint8_t col, char* data);
+
+  /** prints the integer data at the current cursor position.
+  */
+  void print(int data);
+
+  /** Prints the integer data at position line/col. 
+  */
+  void print(uint8_t line, uint8_t col, int data);
+
+  /** Puts on the backlight. 
+  * \see lightOff
+  */
+  void lightOn();
+
+  /** Puts off the backlight. 
+  * \see lightOff
+  */
+  void lightOff();
+};
+
+
+
+LCD::LCD() : i2c(), id(0)
+{
+}
+
+
+LCD::LCD(uint8_t ID) : i2c(), id(ID)
+{
+}
+
+
+void LCD::clear()
+{
+  uint8_t buf[2];
+
+  buf[0] = id;
+  buf[1] = LCD_CMD_CLEAR;
+  i2c.send(I2C_ADDR_LCD, buf, 2);
+}
+
+
+void LCD::print(char* data)
+{
+  int len=strlen(data);
+  uint8_t buf[len+2];
+
+  buf[0] = id;
+  buf[1] = LCD_CMD_PRINTSTR;
+  for (int i=0; i<len; i++) buf[i+2] = uint8_t(data[i]);
+
+  i2c.send(I2C_ADDR_LCD, buf, len+2);
+}
+
+
+void LCD::print(uint8_t line, uint8_t col, char* data)
+{
+  int len=strlen(data);
+  uint8_t buf[len+4];
+
+  buf[0] = id;
+  buf[1] = LCD_CMD_PRINTSTRXY;
+  buf[2] = line;
+  buf[3] = col;
+  for (int i=0; i<len; i++) buf[i+4] = uint8_t(data[i]);
+
+  i2c.send(I2C_ADDR_LCD, buf, len+4);
+}
+
+
+void LCD::print(int data)
+{
+  int len=sizeof(int);
+  uint8_t buf[len+2];
+  uint8_t* ptr = (uint8_t*) &data;    // pointer to data
+
+  buf[0] = id;
+  buf[1] = LCD_CMD_PRINTINT;
+  for (int i=0; i<len; i++) {
+    buf[i+2] = *ptr;
+    ptr++;
+  }
+
+  i2c.send(I2C_ADDR_LCD, buf, len+2);
+}
+
+
+void LCD::print(uint8_t line, uint8_t col, int data)
+{
+  int len=sizeof(int);
+  uint8_t buf[len+4];
+  uint8_t* ptr = (uint8_t*) &data;    // pointer to data
+
+  buf[0] = id;
+  buf[1] = LCD_CMD_PRINTINTXY;
+  buf[2] = line;
+  buf[3] = col;
+  for (int i=0; i<len; i++) {
+    buf[i+4] = *ptr;
+    ptr++;
+  }
+
+  i2c.send(I2C_ADDR_LCD, buf, len+4);
+}
+
+
+void LCD::lightOn()
+{
+  uint8_t buf[2];
+
+  buf[0] = id;
+  buf[1] = LCD_CMD_LIGHTON;
+  i2c.send(I2C_ADDR_LCD, buf, 2);
+}
+
+void LCD::lightOff()
+{
+  uint8_t buf[2];
+
+  buf[0] = id;
+  buf[1] = LCD_CMD_LIGHTOFF;
+  i2c.send(I2C_ADDR_LCD, buf, 2);
+}
+
+
+void LCD::changeID(uint8_t newID)
+{
+  uint8_t buf[3];
+
+  buf[0] = id;
+  buf[1] = LCD_CMD_CHANGEID;
+  buf[2] = newID;
+  i2c.send(I2C_ADDR_LCD, buf, 3);
+
+  id = newID;
+}
+
+
+#endif
+
+
+