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