Nächste Seite: 2024-11-25 Aufwärts: Yuhuu! - aber 2024-11-24 Vorherige Seite: Yuhuu! - aber 2024-11-24
;; also was ist zu tun .include "m8def.inc" ldi r16, HIGH (RAMEND) out SPH, r16 ldi r16, LOW (RAMEND) out SPL, r16 ldi r16, 0xff out DDRD, r16 rcall lcd_init ldi r16, 'H' rcall send_data ldi r16, 'a' rcall send_data ldi r16, 'l' rcall send_data ldi r16, 'l' rcall send_data ldi r16, 'o' rcall send_data ldi r16, '!' rcall send_data end: rjmp end ;; jetzt nibble senden: send_enable: sbi PORTD, 5 nop nop nop cbi PORTD, 5 ret send_cmd: mov r17, r16 swap r16 andi r16, 0b00001111 out PORTD, r16 rcall send_enable andi r17, 0b00001111 out PORTD, r17 rcall send_enable rcall sleep ret send_data: mov r17, r16 swap r16 andi r16, 0x0f ori r16, 0b00010000 out PORTD, r16 rcall send_enable andi r17, 0x0f ori r17, 0b00010000 out PORTD, r17 rcall send_enable rcall sleep ret sleep: push r17 ldi r17, 0xff sleep_loop1: dec r17 brne sleep_loop1 pop r17 ret lcd_init: rcall sleep ldi r16, 0x03 out PORTD, r16 rcall send_enable rcall sleep ldi r16, 0x03 out PORTD, r16 rcall send_enable rcall sleep ldi r16, 0x03 out PORTD, r16 rcall send_enable rcall sleep ldi r16, 0x02 rcall send_cmd ldi r16, 0x20 rcall send_cmd ret
;; also was ist zu tun .include "m8def.inc" ldi r16, HIGH (RAMEND) out SPH, r16 ldi r16, LOW (RAMEND) out SPL, r16 ldi r16, 0xff out DDRD, r16 rcall lcd_init ldi r16, 0x01 rcall send_cmd ldi r16, 0x02 rcall send_cmd ldi r16, 'H' rcall send_data ldi r16, 'a' rcall send_data ldi r16, 'l' rcall send_data ldi r16, 'l' rcall send_data ldi r16, 'o' rcall send_data ldi r16, '!' rcall send_data end: rjmp end ;; jetzt nibble senden: send_enable: sbi PORTD, 5 nop nop nop cbi PORTD, 5 ret send_cmd: mov r17, r16 swap r16 andi r16, 0b00001111 out PORTD, r16 rcall send_enable andi r17, 0b00001111 out PORTD, r17 rcall send_enable rcall sleep ret send_data: mov r17, r16 swap r16 andi r16, 0x0f ori r16, 0b00010000 out PORTD, r16 rcall send_enable andi r17, 0x0f ori r17, 0b00010000 out PORTD, r17 rcall send_enable rcall sleep ret sleep: push r17 ldi r17, 0xff sleep_loop1: dec r17 brne sleep_loop1 pop r17 ret lcd_init: rcall sleep ldi r16, 0x03 out PORTD, r16 rcall send_enable rcall sleep ldi r16, 0x03 out PORTD, r16 rcall send_enable rcall sleep ldi r16, 0x03 out PORTD, r16 rcall send_enable rcall sleep ldi r16, 0x02 rcall send_cmd ldi r16, 0x20 rcall send_cmd ret
