bubble/attiny24a_memory-led-game
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feat: setup timer in ctc mode

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This commit is contained in:
Sergey Yarkov 2021-10-05 00:02:38 +03:00
parent 9a41167e83
commit 755e720961
3 changed files with 106 additions and 78 deletions
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94
firmware.asm
View File

@ -13,6 +13,11 @@
.device ATtiny24A ; Setup device name
.list ; Enable listing
;
; Registers
.def temp_r = r16
.def mcu_state_r = r17
;
; LEDS constants
.equ LED_DIR = DDRA
@ -53,41 +58,7 @@
.equ SW_FLAG_3 = 0xb0
.equ SW_FLAG_4 = 0x70
.macro init_stack_p ; Setup stack pointer
ldi @0, low(@1)
out SPL, @0
.endm
;
; @0 - I/O Register
; @1 - Data to write
.macro outi ; Out to i/o reg
push r16
ldi r16, @1
out @0, r16
pop r16
.endm
;
; @0 - SRAM Address
; @1 - Data to write
.macro stsi ; Write to SRAM
push r16
ldi r16, @1
sts @0, r16
pop r16
.endm
;
; @0 - New state
.macro set_state
push r16
lds r16, CURRENT_STATE_ADDRESS
sts PREVIOUS_STATE_ADDRESS, r16
stsi CURRENT_STATE_ADDRESS, @0
pop r16
.endm
.include "macros.asm" ; Include macros
.dseg ; Data segment
.org SRAM_START
@ -102,7 +73,7 @@ PREVIOUS_STATE_ADDRESS: .byte 0x01
SW_FLAGS_ADDRESS: .byte 0x01
.cseg ; Code segment
.org 0x00 ; Start program at 0x00
.org 0x00
;
; Setup vectors
@ -144,18 +115,17 @@ reti
;
; Program start at reset
start:
init_stack_p r16, RAMEND ; Init stack pointer of MCU
init_stack_p temp_r, RAMEND ; Init stack pointer of MCU
set_state INIT_STATE ; Turn MCU state to initialization
loop: ; Program loop
lds r16, CURRENT_STATE_ADDRESS
lds mcu_state_r, CURRENT_STATE_ADDRESS
init: ; Init state
cpi r16, INIT_STATE
cpi mcu_state_r, INIT_STATE
brne showing
rcall MCU_Init
; rcall delay_1s
set_state SHOWING_STATE
showing: ; Showing state
cpi r16, SHOWING_STATE
cpi mcu_state_r, SHOWING_STATE
brne polling
lds r18, SW_FLAGS_ADDRESS
@ -164,6 +134,7 @@ loop: ; Program loop
brne led_off_1
led_on_1:
sbi LED_PORT, 0
outi OCR0A, 8
rjmp led_2
led_off_1:
cbi LED_PORT, 0
@ -172,6 +143,7 @@ loop: ; Program loop
brne led_off_2
led_on_2:
sbi LED_PORT, 1
outi OCR0A, 10
rjmp led_3
led_off_2:
cbi LED_PORT, 1
@ -180,6 +152,7 @@ loop: ; Program loop
brne led_off_3
led_on_3:
sbi LED_PORT, 2
outi OCR0A, 12
rjmp led_4
led_off_3:
cbi LED_PORT, 2
@ -188,14 +161,15 @@ loop: ; Program loop
brne led_off_4
led_on_4:
sbi LED_PORT, 3
outi OCR0A, 15
rjmp polling
led_off_4:
cbi LED_PORT, 3
polling: ; Polling state
cpi r16, POLLING_STATE
cpi mcu_state_r, POLLING_STATE
brne completion
completion:
cpi r16, COMPLETION_STATE ; Completion state
cpi mcu_state_r, COMPLETION_STATE ; Completion state
brne default
default: ; Do nothing
rjmp loop
@ -251,36 +225,48 @@ MCU_Init:
ret
delay_before_start:
ldi r17, 6
ldi temp_r, 6
_init_loop_loading:
rcall effect_1
dec r17
dec temp_r
brne _init_loop_loading
rcall delay_1s
clr temp_r
ret
init_interrupts:
;
; Enable Port Change Interrupt
ldi r16, (1<<PCIE0)
out GIMSK, r16
ldi temp_r, (1<<PCIE0)
out GIMSK, temp_r
;
; Set Pin Change Mask Register
ldi r16, (1<<PCINT4) | (1<<PCINT5)| (1<<PCINT6) | (1<<PCINT7)
out PCMSK0, r16
ldi temp_r, (1<<PCINT4) | (1<<PCINT5)| (1<<PCINT6) | (1<<PCINT7)
out PCMSK0, temp_r
clr r16
;
; Setup timer
ldi temp_r, (1<<WGM01) | (1<<COM0A0) ; CTC Mode
out TCCR0A, temp_r
ldi temp_r, 4
out OCR0A, temp_r
ldi temp_r, (1<<CS00) | (1<<CS01) ; Prescale
out TCCR0B, temp_r
clr temp_r
sei ; Enable Global Interrupts
ret
init_ports: ; Init MCU ports
; 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
ldi temp_r, 0x0f
out DDRA, temp_r ; Set directions of leds and buttons
swap temp_r
out PORTA, temp_r ; Set low signal on leds and pull-up on buttons
; Setup PORTB
sbi DDRB, BUZZ_PIN ; Set direction of buzzer pin to output

49
firmware.hex
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@ -1,28 +1,29 @@
:020000020000FC
:100000001CC018950EC01895189518951895189538
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:1000200018951F932F932FB719B3107F7FD010937C
:1000300062002FBF2F911F9118950FED0DBF0F93E9
:1000400000916000009361000F9301E00093600055
:100050000F910F9100916000013061F44FD00F9328
:1000600000916000009361000F9302E00093600034
:100070000F910F910230B1F420916200203E11F4F3
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:1000A00001C0DB98033001F4043001F4D3CF1F9377
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:1000D0003A95C9F70F9308EF0BBB0F9127D018E0A3
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:1001000001D0089516E0D3DF1A95E9F71BD00895C2
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:00000001FF

41
macros.asm Normal file
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@ -0,0 +1,41 @@
;
; Initialize stack pointer
; @0 - Temp register
.macro init_stack_p
ldi @0, low(@1)
out SPL, @0
.ifdef SPH
ldi @0, high(RAMEND)
out SPH, @0
.endif
.endm
;
; out immediate
; @0 - I/O Register
; @1 - Data to write
.macro outi
push r16
ldi r16, @1
out @0, r16
pop r16
.endm
;
; sts immediate
; @0 - SRAM Address
; @1 - Data to write
.macro stsi
push r16
ldi r16, @1
sts @0, r16
pop r16
.endm
;
; Set MCU global state
; @0 - New state
.macro set_state
sts PREVIOUS_STATE_ADDRESS, mcu_state_r ; Write previous state to SRAM
stsi CURRENT_STATE_ADDRESS, @0
.endm