Initial commit

lcd.h

@@ -0,0 +1,117 @@
+#ifndef MC8051FUN_LCD_H_
+#define MC8051FUN_LCD_H
+
+#ifndef LCD_E
+#define LCD_E P3_4
+#endif
+
+#ifndef LCD_RS
+#define LCD_RS P3_5
+#endif
+
+#ifndef LCD_RW
+#define LCD_RW P3_6
+#endif
+
+#ifndef LCD_DATA
+#define LCD_DATA P0
+#endif
+
+#ifndef LCD_READY
+#define LCD_READY P0_7
+#endif
+
+
+ 
+// Clear Display -------------- 0b00000001
+#define LCD_CLEAR_DISPLAY       0x01
+ 
+// Cursor Home ---------------- 0b0000001x
+#define LCD_CURSOR_HOME         0x02
+ 
+// Set Entry Mode ------------- 0b000001xx
+#define LCD_SET_ENTRY           0x04
+ 
+#define LCD_ENTRY_DECREASE      0x00
+#define LCD_ENTRY_INCREASE      0x02
+#define LCD_ENTRY_NOSHIFT       0x00
+#define LCD_ENTRY_SHIFT         0x01
+ 
+// Set Display ---------------- 0b00001xxx
+#define LCD_SET_DISPLAY         0x08
+ 
+#define LCD_DISPLAY_OFF         0x00
+#define LCD_DISPLAY_ON          0x04
+#define LCD_CURSOR_OFF          0x00
+#define LCD_CURSOR_ON           0x02
+#define LCD_BLINKING_OFF        0x00
+#define LCD_BLINKING_ON         0x01
+ 
+// Set Shift ------------------ 0b0001xxxx
+#define LCD_SET_SHIFT           0x10
+ 
+#define LCD_CURSOR_MOVE         0x00
+#define LCD_DISPLAY_SHIFT       0x08
+#define LCD_SHIFT_LEFT          0x00
+#define LCD_SHIFT_RIGHT         0x04
+ 
+// Set Function --------------- 0b001xxxxx
+#define LCD_SET_FUNCTION        0x20
+ 
+#define LCD_FUNCTION_4BIT       0x00
+#define LCD_FUNCTION_8BIT       0x10
+#define LCD_FUNCTION_1LINE      0x00
+#define LCD_FUNCTION_2LINE      0x08
+#define LCD_FUNCTION_5X7        0x00
+#define LCD_FUNCTION_5X10       0x04
+ 
+#define LCD_SOFT_RESET          0x30
+ 
+// Set CG RAM Address --------- 0b01xxxxxx  (Character Generator RAM)
+#define LCD_SET_CGADR           0x40
+ 
+#define LCD_GC_CHAR0            0
+#define LCD_GC_CHAR1            1
+#define LCD_GC_CHAR2            2
+#define LCD_GC_CHAR3            3
+#define LCD_GC_CHAR4            4
+#define LCD_GC_CHAR5            5
+#define LCD_GC_CHAR6            6
+#define LCD_GC_CHAR7            7
+ 
+// Set DD RAM Address --------- 0b1xxxxxxx  (Display Data RAM)
+#define LCD_SET_DDADR           0x80
+ 
+	//	LCD_E=1;		\
+	//	LCD_E=0;		\
+
+#define lcd_wait_ready()\
+	LCD_E=1;	\
+	LCD_RS=0;	\
+	LCD_RW=1; 	\
+	LCD_DATA=0x80;	\
+	while((LCD_DATA & 0x80))	\
+	{				\
+		LCD_E=0;		\
+		LCD_E=1;		\
+	}				\
+	LCD_E=1;			\
+	LCD_RW=0;		
+
+
+
+#define lcd_cmd(c) \
+	lcd_wait_ready(); \
+	LCD_RS=0;	\
+	LCD_DATA=c;	\
+	LCD_E=0
+
+#define lcd_chr(c)	\
+	lcd_wait_ready(); \
+	LCD_RS=1;	\
+	LCD_DATA=c;	\
+	LCD_E=0
+
+
+
+#endif