96 lines
3.5 KiB
C
96 lines
3.5 KiB
C
/* avrmb2313_lcd.h
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* V 1.0 by (Hr & RJH-Systems) @ (FLG)
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* 30.03.07
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* Zum Ansteuern eines zweizeiligen LCD-Displays
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* Hitachi 44780 od. KS0070B
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* auf dem AVR-evaluationsboard von Matze Brenner
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* > www.flg-informatik.de
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* 8-bit Mode
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* 4-bit Mode
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*/
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#ifndef avrmb2313_lcd
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#define avrmb2313_lcd
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#include <inttypes.h>
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/* Some ports must be definded first, dont touch these for avrmb2313-project
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* but set for other Designs using other out-Ports
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*/
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#ifndef lcd_bus4
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#ifndef lcd_bus8
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#define lcd_bus4 //defaults to 4-Bit
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#endif
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#endif
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#ifndef lcd_dataports_defined
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#define lcd_dataports_defined
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#include <avr/io.h>
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#define lcd_dataport PORTB
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#define lcd_dataport_DDR DDRB // DataDirectionRegister für lcd_datatport
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//#ifdef lcd_bus8
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#define lcd_dataport_mask 0xf0 // which bits in that port (8-bit = 0xff for 8-bit operation)
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//#else
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// #define lcd_dataport_mask 0xf0 // which bits in that port (4-bit = 0xf0 for 4-bit operation)
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// #endif
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#define set_lcd_RS_DDR DDRD=(DDRD | ((uint8_t) 0x08)) // Dir-Out für lcd _RS setzen)
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#define set_lcd_E_DDR DDRD=(DDRD | ((uint8_t) 0x04)) // Dir-Out für lcd _E setzen)
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#define set_lcd_RS PORTD=(PORTD | ((uint8_t) 0x08)) // Bit für lcd _RS setzen)
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#define unset_lcd_RS PORTD=(PORTD & ~((uint8_t) 0x08)) // Bit für lcd _RS löschen)
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#define set_lcd_E PORTD=(PORTD | ((uint8_t) 0x04)) // Bit für lcd _E setzen)
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#define unset_lcd_E PORTD=(PORTD & ~((uint8_t) 0x04)) // Bit für lcd _E löschen)
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#
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#endif
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extern void wait_100us(void); // This function must be implemented
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// Bitte eine Funktion "void wait_100us()" implementieren, die 100us wartet
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// Please implement function "void wait_100us()": just waiting 100*10^(-6) s
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extern void lcd_init(void);
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extern void lcd_write(uint8_t lcd_whichwrite, uint8_t zeichen, uint8_t position);
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enum lcd_whichwrite{here, therepos, line1, line2, instruct, preinstruct};
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extern void lcd_blank_line(uint8_t lcd_whichwrite); // line1, line2, instruct=all
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extern void lcd_instruct(uint8_t zeichen);
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/* possible "zeichen":
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lcd_DISPLAY_CLEAR
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lcd_RETURN_HOME
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lcd_ENTRY_MODE_SET_INCREASE
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lcd_ENTRY_MODE_SET_DECREASE
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lcd_ENTRY_MODE_SET_DISPLAY_SHIFTED
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lcd_ENTRY_MS_DISPLAY_NOT_S hifted
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*/
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extern void lcd_5ms(); //based on wait_100us
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extern void lcd_1s(); //based on wait_100us
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// Die Konstanten des lcd-Kontrollers local
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#define lcd_DISPLAY_CLEAR 0b00000001
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#define lcd_RETURN_HOME 0b00000010
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#define lcd_ENTRY_MODE_SET 0b00000100
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#define lcd_ENTRY_MODE_SET_INCREASE 0b00000110
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#define lcd_ENTRY_MODE_SET_DECREASE 0b00000100
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#define lcd_ENTRY_MODE_SET_DISPLAY_SHIFTED 0b00000101
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#define lcd_ENTRY_MS_DISPLAY_NOT_S 0b00000100
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#define lcd_DISPLAY_OO 0b00001000
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#define lcd_DISPLAY_OO_ON 0b00001100
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#define lcd_DISPLAY_OO_OFF 0b00001000
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#define lcd_DISPLAY_OO_CURSOR_ON 0b00001010
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#define lcd_DISPLAY_OO_CURSOR_OFF 0b00001000
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#define lcd_DISPLAY_OO_BLINKING_ON 0b00001001
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#define lcd_DISPLAY_OO_BLINKING_OFF 0b00001000
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#define lcd_SHIFT 0b00010000
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#define lcd_SHIFT_DISPLAY_SHIFT 0b00011000
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#define lcd_SHIFT_CURSOR_MOVE 0b00010000
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#define lcd_SHIFT_RIGHT_SHIFT 0b00010100
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#define lcd_SHIFT_LEFT_SHIFT 0b00010000
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#define lcd_SET_FUNCTION 0b00100000
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#define lcd_SET_FUNCTION_8BIT 0b00110000
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#define lcd_SET_FUNCTION_4BIT 0b00100000
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#define lcd_SET_FUNCTION_2LINE 0b00101000
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#define lcd_SET_FUNCTION_1LINE 0b00100000
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#define lcd_SET_FUNCTION_5X10 0b00100100
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#define lcd_SET_FUNCTION_7X5 0b00100000
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#define lcd_SET_CG_RAM 0b01000000
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#define lcd_SET_DD_RAM 0b10000000
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#endif
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