51c0be1754
There are now fixed buffers which are organized in a ringbuffer. This makes it easier to access data stored in the buffers, also receiving packets is now way faster with reduced risk of sync problems.
353 lines
6.8 KiB
NASM
353 lines
6.8 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 = 52000 ; 104000=9600, 52000=19200, 26000=38400
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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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rjmp comIsrPcint0 ; 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 "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 EEPROM
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.eseg
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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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blinkPattern2: .db 10, 20, 0xff, 0xff ; 1 long blink, 2s 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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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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; TIMER module
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rcall Timer_Run
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; COM module (call until carry flag cleared but at most 10 times to not starve other modules)
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ldi r16, 10
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runModulesUntilIdle_Com:
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push r16
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rcall Com_Run
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pop r16
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brcc runModulesUntilIdle_ComEnd
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dec r16
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brne runModulesUntilIdle_Com
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runModulesUntilIdle_ComEnd:
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; add more modules here
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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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ret
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; ---------------------------------------------------------------------------
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; onEvery10s
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;
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; Called every 10 seconds. 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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onEvery10s:
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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 COM_EnqueuePing
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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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; onEveryMinute
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;
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; Called every minute. 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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onEveryMinute:
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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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; - Y : pointer to received buffer
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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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sbi DDRA, PORTA2 ; debug
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sbi PINA, PORTA2 ; debug (toggle)
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clc ; not handled
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ret
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debugSendByte:
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push r15
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in r15, SREG ; debug
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cli
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push r17
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push r22
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ldi r17, 8
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sbi DDRA, PORTA2 ; debug
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cbi PORTA, PORTA2 ; debug (on)
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Utils_WaitNanoSecs 100000, 0, r22 ; start with 2t low
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sbi PORTA, PORTA2 ; debug (off)
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nop
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nop
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cbi PORTA, PORTA2 ; debug (on)
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Utils_WaitNanoSecs 100000, 0, r22 ; start with 2t low
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debugSendByte_loop:
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lsr r16
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brcs debugSendByte_sendLow
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cbi PORTA, PORTA2 ; debug (on)
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rjmp debugSendByte_wait
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debugSendByte_sendLow:
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sbi PORTA, PORTA2 ; debug (off)
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debugSendByte_wait:
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Utils_WaitNanoSecs 100000, 0, r22
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dec r17
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brne debugSendByte_loop
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cbi PORTA, PORTA2 ; debug (on)
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Utils_WaitNanoSecs 200000, 0, r22 ; end with 2t low
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sbi PORTA, PORTA2 ; debug (off)
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pop r22
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pop r17
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out SREG, r15
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pop r15
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ret
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