281 lines
5.3 KiB
NASM
281 lines
5.3 KiB
NASM
.nolist
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.include "include/tn84def.inc" ; Define device ATtiny84
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.list
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; ***************************************************************************
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; defines
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; ---------------------------------------------------------------------------
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; generic
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.equ clock=1000000 ; Define the clock frequency
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; ---------------------------------------------------------------------------
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; COM module
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.equ COM_BIT_LENGTH = 104000 ; 104000=9600, 52000=19200, 26000=38400
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.equ COM_RINGBUFFER_SIZE = 32 ; 32 bytes for now
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.equ COM_DDR_DATA = DDRA
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.equ COM_PORT_DATA = PORTA
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.equ COM_PIN_DATA = PINA
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.equ COM_PINNUM_DATA = PORTA1
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.equ COM_DDR_ATTN = DDRA
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.equ COM_PORT_ATTN = PORTA
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.equ COM_PIN_ATTN = PINA
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.equ COM_PINNUM_ATTN = PORTA7
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.equ COM_IRQ_ADDR_ATTN = PCMSK0
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.equ COM_IRQ_BIT_ATTN = 7 ; bit 7 in PCMSK0
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.equ COM_IRQ_GIFR_ATTN = PCIF0
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.equ COM_IRQ_GIMSK_ATTN = PCIE0
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; ***************************************************************************
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; code segment
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.cseg
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.org 000000
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; ---------------------------------------------------------------------------
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; Reset and interrupt vectors
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rjmp main ; Reset vector
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reti ; EXT_INT0
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reti ; PCI0
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reti ; PCI1
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reti ; WATCHDOG
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reti ; ICP1
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reti ; OC1A
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reti ; OC1B
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reti ; OVF1
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rjmp timerIrqOC0A ; OC0A
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reti ; OC0B
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reti ; OVF0
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reti ; ACI
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reti ; ADCC
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reti ; ERDY
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reti ; USI_STR
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reti ; USI_OVF
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; ***************************************************************************
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; includes
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.include "utils.asm"
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.include "ringbuffer.asm"
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.include "timer.asm"
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.include "led.asm"
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.include "com.asm"
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; ***************************************************************************
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; data in SRAM
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.dseg
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ledA3Sram: .byte LED_SRAM_SIZE
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; ***************************************************************************
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; data in FLASH
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.cseg
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ledA3Flash: .db DDRA+0x20, PORTA+0x20, PINA+0x20, (1<<PORTA3)
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blinkPattern: .db 5, 5, 5, 5, 5, 10, 0xff, 0xff ; 3 short blinks, 1s pause, restart
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main:
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; setup stack
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.ifdef SPH ; if SPH is defined
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ldi r16, High(RAMEND)
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out SPH, r16 ; init MSB stack pointer
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.endif
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ldi r16, Low(RAMEND)
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out SPL, r16 ; init LSB stack pointer
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rcall initModules
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sei ; Enable interrupts
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ldi xl, LOW(blinkPattern) ; debug: set blink pattern
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ldi xh, HIGH(blinkPattern)
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ldi zl, LOW(ledA3Flash)
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ldi zh, HIGH(ledA3Flash)
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ldi yl, LOW(ledA3Sram)
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ldi yh, HIGH(ledA3Sram)
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rcall Led_SetPattern
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ldi r17, 219 ; debug
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rcall COM_EnqueuePing ; debug
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main_loop:
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rcall runModulesUntilIdle
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; sbi DDRA, PORTA2 ; debug
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; sbi PINA, PORTA2 ; debug (toggle)
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; cbi PORTA, PORTA2 ; debug (on)
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; sbi PORTA, PORTA2 ; debug (off)
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; only modify SE, SM1 and SM0
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in r16, MCUCR
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ldi r17, (1<<SE) | (1<<SM1) | (1<<SM0)
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neg r17
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and r16, r17
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ori r16, (1<<SE) ; sleep mode "idle", enable
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out MCUCR, r16
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sleep ; sleep, wait for interrupt
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rjmp main_loop
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; ---------------------------------------------------------------------------
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; initModules
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;
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; Call init functions of the used modules. Add your routine calls here.
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;
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; IN:
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; - nothing
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; OUT:
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; - nothing
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; USED: depending on called routines
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initModules:
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rcall Timer_Init
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ldi zl, LOW(ledA3Flash)
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ldi zh, HIGH(ledA3Flash)
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ldi yl, LOW(ledA3Sram)
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ldi yh, HIGH(ledA3Sram)
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rcall Led_Init
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rcall Com_Init
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ret
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; ---------------------------------------------------------------------------
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; runModulesUntilIdle
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;
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; Call run functions of the used modules. Add your routine calls here.
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;
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; IN:
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; - nothing
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; OUT:
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; - nothing
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; USED: depending on called routines
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runModulesUntilIdle:
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runModulesUntilIdle_Timer: ; repeat this block for every module with run function
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rcall Timer_Run ;
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brcs runModulesUntilIdle_Timer ;
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;runModulesUntilIdle_Com:
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; rcall Com_Run
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; brcs runModulesUntilIdle_Com
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ret
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; ---------------------------------------------------------------------------
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; onEvery100ms
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;
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; Called every 100ms. Add your routine calls here.
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;
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; IN:
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; - nothing
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; OUT:
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; - nothing
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; USED: depending on called routines
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onEvery100ms:
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; ticker for LED module
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ldi zl, LOW(ledA3Flash)
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ldi zh, HIGH(ledA3Flash)
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ldi yl, LOW(ledA3Sram)
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ldi yh, HIGH(ledA3Sram)
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rcall Led_Tick
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; add more calls here
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ret
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; ---------------------------------------------------------------------------
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; onEverySecond
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;
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; Called every second. Add your routine calls here.
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;
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; IN:
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; - nothing
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; OUT:
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; - nothing
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; USED: depending on called routines
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onEverySecond:
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; ldi r17, 219
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; rcall COM_EnqueuePing
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in r15, SREG ; debug
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cli
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push r15
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ldi r18, 0
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rcall comSendPacketRaw
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pop r15
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out SREG, r15
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; in r15, SREG ; debug
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; cli
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; push r15
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; ldi r16, 219
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; rcall comSendByte ; 1101 1011
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; pop r15
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; out SREG, r15
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ret
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; ---------------------------------------------------------------------------
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; onPacketReceived:
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;
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; Called after a packet was received via COM module. Add your routine calls here.
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;
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; The packet will be removed from buffer in any case after return from this call.
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; IN:
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; - R18: pos of packet in ringbuffer
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; - Y : pointer to ringbuffer
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; OUT:
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; - CFLAG: set if handled, cleared otherwise
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; USED: depending on called routines
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onPacketReceived:
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clc ; not handled
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ret
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