bubble/attiny24a_memory-led-game
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feat: first impl of btn handling

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This commit is contained in:
Sergey Yarkov 2021-10-03 01:56:32 +03:00
parent b57e406522
commit 8009d0c44e
2 changed files with 100 additions and 49 deletions
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89
firmware.asm
View File

@ -17,6 +17,7 @@
; LEDS constants
.equ LED_DIR = DDRA
.equ LED_PORT = PORTA
.equ LED_PIN = PINA
.equ LED_PIN_0 = PINA0
.equ LED_PIN_1 = PINA1
.equ LED_PIN_2 = PINA2
@ -24,12 +25,13 @@
;
; 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
.equ SW_DIR = DDRA
.equ SW_PORT = PORTA
.equ SW_PIN = PINA
.equ SW_PIN_4 = PINA4
.equ SW_PIN_5 = PINA5
.equ SW_PIN_6 = PINA6
.equ SW_PIN_7 = PINA7
;
; Buzzer constants
@ -78,10 +80,10 @@
pop r16
.endm
.macro set_btn_flag
.macro set_sw_flag
push r16
ldi r16, @0
sts BTN_FLAGS_ADDRESS, r16
sts SW_FLAGS_ADDRESS, r16
pop r16
.endm
@ -95,7 +97,7 @@ PREVIOUS_STATE_ADDRESS: .byte 0x01
;
; Button flags
BTN_FLAGS_ADDRESS: .byte 0x01
SW_FLAGS_ADDRESS: .byte 0x01
.cseg ; Code segment
.org 0x00 ; Start program at 0x00
@ -104,7 +106,7 @@ BTN_FLAGS_ADDRESS: .byte 0x01
; Setup vectors
rjmp start ; Program start at RESET vector
reti ; External Interrupt Request 0
rjmp PCINT0_ISR ; Pin Change Interrupt Request 0 / active
rjmp PCINT0_vect ; Pin Change Interrupt Request 0 / active
reti ; Pin Change Interrupt Request 1 / inactive
reti ; Watchdog Time-out / inactive
reti ; Timer/Counter1 Capture Event / inactive
@ -122,12 +124,45 @@ reti ; USI Overflow / inactive
;
; Interrupt service routines
PCINT0_ISR: ; Button handlers there
set_btn_flag 0x01
reti
PCINT0_vect:
push r17
ldi r18, 0x00
sts BTN_FLAGS_ADDRESS, r18
sbis PINA, PINA4
rjmp sw_check_1
sbic PINA, PINA4
rjmp sw_2nd
sw_2nd:
sbis PINA, PINA5
rjmp sw_check_2
sbic PINA, PINA5
rjmp sw_clr
rjmp PCINT0_vect_end
sw_1:
; lds r17, SW_FLAGS_ADDRESS
; cpi r17, 0x01
; breq sw_clr
sw_check_1:
set_sw_flag 0x01
rjmp PCINT0_vect_end
sw_check_2:
set_sw_flag 0x02
rjmp PCINT0_vect_end
; sw_check_flag:
; lds r16, SW_FLAGS_ADDRESS
; sbis PINA, PINA4
; ldi r16, 0x01
; sw_flag_1:
; cpi r16, 0x01
; brne sw_flag_not_found
; sts SW_FLAGS_ADDRESS, r16
; sw_flag_not_found:
sw_clr:
set_sw_flag 0x00
PCINT0_vect_end:
pop r17
reti
;
; Program start at reset
@ -147,15 +182,26 @@ loop: ; Program loop
cpi r16, SHOWING_STATE
brne polling
lds r18, BTN_FLAGS_ADDRESS
led_1:
lds r18, SW_FLAGS_ADDRESS
cpi r18, 0x01
brne led_off
led_on:
sbi LED_PORT, 2
brne led_off_1
led_on_1:
sbi LED_PORT, 0
rcall delay_50ms
rjmp led_2
led_off_1:
cbi LED_PORT, 0
led_2:
lds r18, SW_FLAGS_ADDRESS
cpi r18, 0x02
brne led_off_2
led_on_2:
sbi LED_PORT, 1
rcall delay_50ms
rjmp polling
led_off:
cbi LED_PORT, 2
led_off_2:
cbi LED_PORT, 1
polling: ; Polling state
cpi r16, POLLING_STATE
brne completion
@ -234,6 +280,7 @@ init_interrupts:
; Set Pin Change Mask Register
ldi r16, (1<<PCINT4) | (1<<PCINT5)| (1<<PCINT6) | (1<<PCINT7)
out PCMSK0, r16
clr r16
sei ; Enable Global Interrupts

48
firmware.hex
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@ -1,25 +1,29 @@
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