mirror of
https://github.com/sergeyyarkov/attiny24a_memory-led-game.git
synced 2026-10-11 10:18:58 +03:00
188 lines
3.8 KiB
NASM
188 lines
3.8 KiB
NASM
;
|
|
; Project name: memory-led-game
|
|
; Description: Simple memory game using leds
|
|
; Source code: https://github.com/sergeyyarkov/attiny24a_memory-led-game
|
|
; Device: ATtiny24A
|
|
; Package: 14-pin-PDIP_SOIC
|
|
; Assembler: gavrasm v5.0
|
|
; Clock frequency: 8MHz with CKDIV8
|
|
; Fuses: lfuse: 0x42, hfuse: 0xDF, efuse: 0xFF, lock:0xFF
|
|
;
|
|
; Written by Sergey Yarkov 27.09.2021
|
|
|
|
.device ATtiny24A ; Setup device name
|
|
.list ; Enable listing
|
|
|
|
;
|
|
; LEDS constants
|
|
.equ LED_DIR = DDRA
|
|
.equ LED_PORT = PORTA
|
|
.equ LED_PIN_0 = PINA0
|
|
.equ LED_PIN_1 = PINA1
|
|
.equ LED_PIN_2 = PINA2
|
|
.equ LED_PIN_3 = PINA3
|
|
|
|
;
|
|
; Buttons constants
|
|
.equ BTN_DIR = DDRA
|
|
.equ BTN_PORT = PORTA
|
|
.equ BTN_PIN_4 = PINA4
|
|
.equ BTN_PIN_5 = PINA5
|
|
.equ BTN_PIN_6 = PINA6
|
|
.equ BTN_PIN_7 = PINA7
|
|
|
|
;
|
|
; Buzzer constants
|
|
.equ BUZZ_DIR = DDRB
|
|
.equ BUZZ_PORT = PORTB
|
|
.equ BUZZ_PIN = PINB2
|
|
|
|
;
|
|
; States constants
|
|
.equ INIT_STATE = 0x01
|
|
.equ SHOWING_STATE = 0x02
|
|
.equ POLLING_STATE = 0x03
|
|
.equ COMPLETION_STATE = 0x04
|
|
|
|
.macro init_stack_p ; Setup stack pointer
|
|
ldi @0, low(@1)
|
|
out SPL, @0
|
|
.endm
|
|
|
|
.macro outi ; Out to i/o reg
|
|
push r16
|
|
ldi r16, @1
|
|
out @0, r16
|
|
pop r16
|
|
.endm
|
|
|
|
.macro stsi ; Write to SRAM
|
|
push r16
|
|
ldi r16, @1
|
|
sts @0, r16
|
|
pop r16
|
|
.endm
|
|
|
|
.macro set_state
|
|
push r16
|
|
lds r16, CURRENT_STATE_ADDRESS
|
|
|
|
sts PREVIOUS_STATE_ADDRESS, r16
|
|
stsi CURRENT_STATE_ADDRESS, @0
|
|
pop r16
|
|
.endm
|
|
|
|
.dseg ; Data segment
|
|
.org SRAM_START
|
|
|
|
CURRENT_STATE_ADDRESS: .byte 0x01
|
|
PREVIOUS_STATE_ADDRESS: .byte 0x02
|
|
|
|
.cseg ; Code segment
|
|
.org 0x00 ; Start program at 0x00
|
|
|
|
setup: ; Setup program
|
|
init_stack_p r16, RAMEND ; Init stack pointer of MCU
|
|
set_state INIT_STATE ; Turn MCU state to initialization
|
|
|
|
loop: ; Program loop
|
|
lds r16, CURRENT_STATE_ADDRESS
|
|
init: ; Init state
|
|
cpi r16, INIT_STATE
|
|
brne showing
|
|
rcall MCU_Init
|
|
set_state SHOWING_STATE
|
|
showing: ; Showing state
|
|
cpi r16, SHOWING_STATE
|
|
brne polling
|
|
rcall effect_1
|
|
polling: ; Polling state
|
|
cpi r16, POLLING_STATE
|
|
brne completion
|
|
completion:
|
|
cpi r16, COMPLETION_STATE ; Completion state
|
|
brne default
|
|
default: ; Do nothing
|
|
rjmp loop
|
|
|
|
effect_1: ; Shift bits of an leds in port every 50ms
|
|
push r17
|
|
push r18
|
|
push r19
|
|
push r20
|
|
|
|
in r20, LED_PORT
|
|
|
|
outi LED_PORT, 0xf1
|
|
rcall delay_50ms
|
|
ldi r17, 0x01
|
|
ldi r19, 3
|
|
_eff_1_shift_l: ; Shift bits to left loop
|
|
ldi r18, 0xf0
|
|
lsl r17
|
|
add r18, r17
|
|
out LED_PORT, r18
|
|
rcall delay_50ms
|
|
dec r19
|
|
brne _eff_1_shift_l
|
|
|
|
outi LED_PORT, 0xf8
|
|
rcall delay_50ms
|
|
ldi r17, 0x08
|
|
ldi r19, 3
|
|
_eff_1_shift_r: ; Shift bits to right loop
|
|
ldi r18, 0xf0
|
|
lsr r17
|
|
add r18, r17
|
|
out LED_PORT, r18
|
|
rcall delay_50ms
|
|
dec r19
|
|
brne _eff_1_shift_r
|
|
|
|
;
|
|
; Out saved PORT values
|
|
out LED_PORT, r20
|
|
|
|
pop r20
|
|
pop r19
|
|
pop r18
|
|
pop r17
|
|
ret
|
|
|
|
MCU_Init:
|
|
rcall init_ports
|
|
ret
|
|
|
|
init_ports: ; Init MCU ports
|
|
push r16
|
|
|
|
; Setup PORTA
|
|
ldi r16, 0x0f
|
|
out DDRA, r16 ; Set directions of leds and buttons
|
|
swap r16
|
|
out PORTA, r16 ; Set low signal on leds and pull-up on buttons
|
|
|
|
; Setup PORTB
|
|
sbi DDRB, BUZZ_PIN ; Set direction of buzzer pin to output
|
|
cbi PORTB, BUZZ_PIN ; Set low signal on buzzer
|
|
|
|
pop r16
|
|
ret
|
|
|
|
delay_50ms:
|
|
push r18
|
|
push r19
|
|
|
|
ldi r18, 65 ; 1c
|
|
ldi r19, 239 ; 1c
|
|
_loop_d_50ms:
|
|
dec r19 ; 1c
|
|
brne _loop_d_50ms ; 2 or 1c = 665c
|
|
dec r18 ; 1c
|
|
brne _loop_d_50ms ; 2 or 1c
|
|
nop
|
|
pop r19
|
|
pop r18
|
|
ret
|
|
|
|
info: .db "Memory led game. Written by Sergey Yarkov 27.09.2021" |