Diff: display.h

Revision:

0:d6269d17c8cf

Child:

2:c6986ee3c7c5

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/display.h	Thu Feb 04 21:48:54 2016 +0000
@@ -0,0 +1,114 @@
+/* University of York Robotics Laboratory PsiSwarm Library: Display Driver Header File
+ * 
+ * File: display.h
+ *
+ * (C) Dept. Electronics & Computer Science, University of York
+ * James Hilder, Alan Millard, Alexander Horsfield, Homero Elizondo, Jon Timmis
+ *
+ * PsiSwarm Library Version: 0.4
+ *
+ * February 2016
+ *
+ *
+ * Driver for the Midas 16x2 I2C LCD Display (MCCOG21605x6W) LCD
+ *
+ * Farnell part 2218942 or 2063206
+ *
+ */ 
+ 
+ 
+#ifndef DISPLAY_H
+#define DISPLAY_H
+
+#define PAGE_TIME 0.4
+#define CLEAR_TIME 0.8
+
+class Display : public Stream {
+
+// Public Functions
+
+public:
+
+   /** Create the LCD Display object connected to the default pins
+     *
+     * @param sda pin   - default is p28
+     * @param scl pin   - default is p27
+     * @param reset pin - default is p29
+     * @param backlight pin - default is p30
+     */
+     
+    Display();
+    
+    /** Create the LCD Display object connected to specific pins
+     *
+     */
+    Display(PinName sda, PinName scl, PinName reset, PinName backlight);
+
+//Print string message
+void write_string(char * message);
+
+//Print string message of given length
+void write_string(char * message, char length);
+
+//Set the row and column of cursor position
+void set_position(char row, char column);
+
+// Enable or disable cursor
+void set_cursor(char enable);
+
+// Enable or disable cursor blink
+void set_blink(char enable);
+
+// Enable or disable display
+void set_display(char enable);
+
+// Set the brightness of the backlight
+void set_backlight_brightness(float brightness);
+
+// Special function for when debug messages are sent to display
+void debug_page(char * message, char length);
+
+void IF_restore_page(void);
+
+void IF_debug_multipage(void);
+
+void IF_backlight_toggle(void);
+
+//Parts of initialisation routine
+void post_init(void);
+void post_post_init(void);
+
+
+// Clear display
+void clear_display();
+
+//Set cursor to home position
+void home();
+
+// Send a 1-byte control message to the display
+int i2c_message(char byte);
+
+// Default initialisation sequence for the display
+void init_display(char mode);
+
+int disp_putc(int c);
+
+
+private :
+
+    I2C _i2c;
+    DigitalOut _reset;
+    DigitalOut _backlight;
+    
+    char display_on;
+    char cursor_on;
+    char blink_on;
+    
+    void _set_display();
+    
+    virtual int _putc(int c);
+    virtual int _getc();
+    
+};
+
+#endif // DISPLAY_H
\ No newline at end of file