я уже поднимал эту тему на форуме
http://www.telesys.ru/wwwboards/mcontrol/1910/messages/260431.shtml
ответа так и не нашел, сейчас из программы выкинул все что можно оставив только само прерывание по таймеру которое всеравно не работает
моделирую в AVR Studio 4.12 SP4 Built 498
при моделировании при переполнении таймера происходит сбой программы
и указатель команд прыгает не на rjmp tim0_ovf, а в совершенно левое
место (середину кода программы)
вроде все указал правильно, ХЗ его знает из-за чего это????????
просьба/вопрос (приведенная программа до ужаса простая)
запустить код программы он приведен ниже и проверить заработает
он или нет.
второе, если код не заработает ткните носом чего я непонимаю
.Device ATmega8L ; ?????????????
.include "m8def.inc"
.def Temp1=R16
.def Temp2=R17
.cseg
.org 0x00
rjmp RESET ; Reset Handler
.org OVF0addr
rjmp TIM0_OVF ; Timer0 Overflow Handler
RESET:
cli
ldi r16,high(RAMEND) ; Main program start
out SPH,r16 ; Set stack pointer to top of RAM
ldi r16,low(RAMEND)
out SPL,r16
sei
;-----------------------------------------
; MAIN PROGRAMM
;-----------------------------------------
rcall init
sei
ldi temp1,0b00000001 ; timer interrupt enable
out TIMSK,temp1
ldi temp1,0b00000010 ; prescaler T0 = 8
out TCCR0,temp1
ldi temp1,154 ; 219 mks
out TCNT0,temp1
;-----------------------------------------
start:
sei
nop
nop
rjmp start
;*****************************************
init:
ldi r16,0b11110000 ;
out DDRB,r16
ldi r16,0b11110000 ;
out PORTB,r16
ldi r16,0b00000000 ;
out DDRC,r16 ;
ldi r16,0b00000000 ;
out PORTC,r16
ldi r16,0b11111111 ;
out DDRD,r16 ;
ldi r16,0b11111111 ;
out PORTD,r16
ret
;*****************************************
TIM0_OVF:
sei
ldi temp1,0b00000001 ; timer interrupt enable
out TIMSK,temp1
ldi temp1,0b00000000 ; prescaler T0 = 0
out TCCR0,temp1
ldi temp1,0b00000010 ; prescaler T2 = 8
out TCCR2,temp1
ldi temp1,80 ; 380 mks
out TCNT0,temp1
cbi PORTD,3 ; vykl - electric impulse
reti
;*****************************************
; далее вставил файл "m8def.inc"
;***************************************************************************
;* A P P L I C A T I O N N O T E F O R T H E A V R F A M I L Y
;*
;* Number :AVR000
;* File Name :"m8def.inc"
;* Title :Register/Bit Definitions for the ATmega8
;* Date :07.09.2001
;* Version :1.00
;* Support telephone :+47 72 88 43 88 (ATMEL Norway)
;* Support fax :+47 72 88 43 99 (ATMEL Norway)
;* Support E-mail :avr@atmel.no
;* Target MCU :ATmega8
;*
;* DESCRIPTION
;* When including this file in the assembly program file, all I/O register
;* names and I/O register bit names appearing in the data book can be used.
;* In addition, the six registers forming the three data pointers X, Y and
;* Z have been assigned names XL - ZH. Highest RAM address for Internal
;* SRAM is also defined
;*
;* The Register names are represented by their hexadecimal address.
;*
;* The Register Bit names are represented by their bit number (0-7).
;*
;* Please observe the difference in using the bit names with instructions
;* such as "sbr"/"cbr" (set/clear bit in register) and "sbrs"/"sbrc"
;* (skip if bit in register set/cleared). The following example illustrates
;* this:
;*
;* in r16,PORTB ;read PORTB latch
;* sbr r16,(1<<PB6)+(1<<PB5) ;set PB6 and PB5 (use masks, not bit#)
;* out PORTB,r16 ;output to PORTB
;*
;* in r16,TIFR ;read the Timer Interrupt Flag Register
;* sbrc r16,TOV0 ;test the overflow flag (use bit#)
;* rjmp TOV0_is_set ;jump if set
;* ... ;otherwise do something else
;***************************************************************************
;***** Specify Device
.device ATmega8
;***** I/O Register Definitions
.equ SREG =$3f
.equ SPH =$3e
.equ SPL =$3d
.equ GIMSK =$3b
.equ GICR =$3b ; new name for GIMSK
.equ GIFR =$3a
.equ TIMSK =$39
.equ TIFR =$38
.equ SPMCR =$37
.equ I2CR =$36
.equ TWCR =$36
.equ MCUCR =$35
.equ MCUSR =$34 ; For compatibility,
.equ MCUCSR =$34 ; keep both names until further
.equ TCCR0 =$33
.equ TCNT0 =$32
.equ OSCCAL =$31
.equ SFIOR =$30
.equ TCCR1A =$2f
.equ TCCR1B =$2e
.equ TCNT1H =$2d
.equ TCNT1L =$2c
.equ OCR1AH =$2b
.equ OCR1AL =$2a
.equ OCR1BH =$29
.equ OCR1BL =$28
.equ ICR1H =$27
.equ ICR1L =$26
.equ TCCR2 =$25
.equ TCNT2 =$24
.equ OCR2 =$23
.equ ASSR =$22
.equ WDTCR =$21
.equ UBRRH =$20 ; Note! UCSRC equals UBRRH
.equ EEARH =$1f
.equ EEARL =$1e
.equ EEDR =$1d
.equ EECR =$1c
.equ PORTB =$18
.equ DDRB =$17
.equ PINB =$16
.equ PORTC =$15
.equ DDRC =$14
.equ PINC =$13
.equ PORTD =$12
.equ DDRD =$11
.equ PIND =$10
.equ SPDR =$0f
.equ SPSR =$0e
.equ SPCR =$0d
.equ UDR =$0c
.equ UCSRA =$0b
.equ UCSRB =$0a
.equ UCSRC =$20 ; Note! UCSRC equals UBRRH
.equ UBRRL =$09
.equ ACSR =$08
.equ ADMUX =$07
.equ ADCSR =$06
.equ ADCH =$05
.equ ADCL =$04
.equ I2DR =$03
.equ I2AR =$02
.equ I2SR =$01
.equ I2BR =$00
.equ TWDR =$03
.equ TWAR =$02
.equ TWSR =$01
.equ TWBR =$00
;***** Bit Definitions
;GICR (former GIMSK)
.equ INT1 =7
.equ INT0 =6
.equ IVSEL =1 ; interrupt vector select
.equ IVCE =0 ; interrupt vector change enable
;GIFR
.equ INTF1 =7
.equ INTF0 =6
;TIMSK
.equ TOIE0 =0
.equ TOIE1 =2
.equ OCIE1B =3
.equ OCIE1A =4
.equ TICIE1 =5
.equ TOIE2 =6
.equ OCIE2 =7
;TIFR
.equ TOV0 =0
.equ TOV1 =2
.equ OCF1B =3
.equ OCF1A =4
.equ ICF1 =5
.equ TOV2 =6
.equ OCF2 =7
;SPMCR
.equ SPMIE =7
.equ RWWSB =6
.equ RWWSRE =4
.equ BLBSET =3
.equ PGWRT =2
.equ PGERS =1
.equ SPMEN =0
;MCUCR
.equ SE =7
.equ SM2 =6
.equ SM1 =5
.equ SM0 =4
.equ ISC11 =3
.equ ISC10 =2
.equ ISC01 =1
.equ ISC00 =0
;MCUCSR
.equ WDRF =3
.equ BORF =2
.equ EXTRF =1
.equ PORF =0
;TCCR0
.equ CS02 =2
.equ CS01 =1
.equ CS00 =0
;TCCR1A
.equ COM1A1 =7
.equ COM1A0 =6
.equ COM1B1 =5
.equ COM1B0 =4
.equ FOC1A =3
.equ FOC1B =2
.equ PWM11 =1 ; OBSOLETE! Use WGM11
.equ PWM10 =0 ; OBSOLETE! Use WGM10
.equ WGM11 =1
.equ WGM10 =0
;TCCR1B
.equ ICNC1 =7
.equ ICES1 =6
.equ CTC11 =4 ; OBSOLETE! Use WGM13
.equ CTC10 =3 ; OBSOLETE! Use WGM12
.equ WGM13 =4
.equ WGM12 =3
.equ CTC1 =3 ; Obsolete - Included for backward compatibility
.equ CS12 =2
.equ CS11 =1
.equ CS10 =0
;TCCR2
.equ FOC2 =7
.equ PWM2 =6 ; OBSOLETE! Use WGM20
.equ WGM20 =6
.equ COM21 =5
.equ COM20 =4
.equ CTC2 =3 ; OBSOLETE! Use WGM21
.equ WGM21 =3
.equ CS22 =2
.equ CS21 =1
.equ CS20 =0
;SFIOR
.equ ADHSM =4
.equ ACME =3
.equ PUD =2
.equ PSR2 =1
.equ PSR10 =0
;WDTCR
.equ WDCE =4
.equ WDTOE =4
.equ WDE =3
.equ WDP2 =2
.equ WDP1 =1
.equ WDP0 =0
;EECR
.equ EERIE =3
.equ EEMWE =2
.equ EEWE =1
.equ EERE =0
;PORTB
.equ PB7 =7
.equ PB6 =6
.equ PB5 =5
.equ PB4 =4
.equ PB3 =3
.equ PB2 =2
.equ PB1 =1
.equ PB0 =0
;DDRB
.equ DDB7 =7
.equ DDB6 =6
.equ DDB5 =5
.equ DDB4 =4
.equ DDB3 =3
.equ DDB2 =2
.equ DDB1 =1
.equ DDB0 =0
;PINB
.equ PINB7 =7
.equ PINB6 =6
.equ PINB5 =5
.equ PINB4 =4
.equ PINB3 =3
.equ PINB2 =2
.equ PINB1 =1
.equ PINB0 =0
;PORTC
.equ PC6 =6
.equ PC5 =5
.equ PC4 =4
.equ PC3 =3
.equ PC2 =2
.equ PC1 =1
.equ PC0 =0
;DDRC
.equ DDC6 =6
.equ DDC5 =5
.equ DDC4 =4
.equ DDC3 =3
.equ DDC2 =2
.equ DDC1 =1
.equ DDC0 =0
;PINC
.equ PINC6 =6
.equ PINC5 =5
.equ PINC4 =4
.equ PINC3 =3
.equ PINC2 =2
.equ PINC1 =1
.equ PINC0 =0
;PORTD
.equ PD7 =7
.equ PD6 =6
.equ PD5 =5
.equ PD4 =4
.equ PD3 =3
.equ PD2 =2
.equ PD1 =1
.equ PD0 =0
;DDRD
.equ DDD7 =7
.equ DDD6 =6
.equ DDD5 =5
.equ DDD4 =4
.equ DDD3 =3
.equ DDD2 =2
.equ DDD1 =1
.equ DDD0 =0
;PIND
.equ PIND7 =7
.equ PIND6 =6
.equ PIND5 =5
.equ PIND4 =4
.equ PIND3 =3
.equ PIND2 =2
.equ PIND1 =1
.equ PIND0 =0
;UCSRA
.equ RXC =7
.equ TXC =6
.equ UDRE =5
.equ FE =4
.equ UOR =3 ; old name kept for compatibilty
.equ DOR =3
.equ UPE =2
.equ PE =2
.equ U2X =1
.equ MPCM =0
;UCSRB
.equ RXCIE =7
.equ TXCIE =6
.equ UDRIE =5
.equ RXEN =4
.equ TXEN =3
.equ CHR9 =2 ; old name kept for compatibilty
.equ UCSZ2 =2
.equ RXB8 =1
.equ TXB8 =0
;UCSRC
.equ URSEL =7
.equ UMSEL =6
.equ UPM1 =5
.equ UPM0 =4
.equ USBS =3
.equ UCSZ1 =2
.equ UCSZ0 =1
.equ UCPOL =0
;SPCR
.equ SPIE =7
.equ SPE =6
.equ DORD =5
.equ MSTR =4
.equ CPOL =3
.equ CPHA =2
.equ SPR1 =1
.equ SPR0 =0
;SPSR
.equ SPIF =7
.equ WCOL =6
.equ SPI2X =0
;ACSR
.equ ACD =7
.equ ACBG =6
.equ ACO =5
.equ ACI =4
.equ ACIE =3
.equ ACIC =2
.equ ACIS1 =1
.equ ACIS0 =0
;ADMUX
.equ REFS1 =7
.equ REFS0 =6
.equ ADLAR =5
.equ MUX3 =3
.equ MUX2 =2
.equ MUX1 =1
.equ MUX0 =0
;ADCSR
.equ ADEN =7
.equ ADSC =6
.equ ADFR =5
.equ ADIF =4
.equ ADIE =3
.equ ADPS2 =2
.equ ADPS1 =1
.equ ADPS0 =0
; TWCR
.equ TWINT =7
.equ TWEA =6
.equ TWSTA =5
.equ TWSTO =4
.equ TWWC =3
.equ TWEN =2
.equ TWIE =0
; TWAR
.equ TWA6 =7
.equ TWA5 =6
.equ TWA4 =5
.equ TWA3 =4
.equ TWA2 =3
.equ TWA1 =2
.equ TWA0 =1
.equ TWGCE =0
; TWSR
.equ TWS7 =7
.equ TWS6 =6
.equ TWS5 =5
.equ TWS4 =4
.equ TWS3 =3
.equ TWPS1 =1
.equ TWPS0 =0
;ASSR
.equ AS2 =3
.equ TCN2UB =2
.equ OCR2UB =1
.equ TCR2UB =0
.def XL =r26
.def XH =r27
.def YL =r28
.def YH =r29
.def ZL =r30
.def ZH =r31
.equ RAMEND =$45F
.equ FLASHEND =$FFF
; byte groups
; /\/--\/--\/--\
.equ SMALLBOOTSTART =0b00111110000000 ;($0F80) smallest boot block is 256
.equ SECONDBOOTSTART =0b00111100000000 ;($0F00) 2'nd boot block size is 512
.equ THIRDBOOTSTART =0b00111000000000 ;($0E00) third boot block size is 1K
.equ LARGEBOOTSTART =0b00110000000000 ;($0C00) largest boot block is 2K
.equ BOOTSTART =THIRDBOOTSTART ;OBSOLETE!!! kept for compatibility
.equ PAGESIZE =32 ;number of WORDS in a page
.equ INT0addr=$001 ; External Interrupt0 Vector Address
.equ INT1addr=$002 ; External Interrupt1 Vector Address
.equ OC2addr =$003 ; Output Compare2 Interrupt Vector Address
.equ OVF2addr=$004 ; Overflow2 Interrupt Vector Address
.equ ICP1addr=$005 ; Input Capture1 Interrupt Vector Address
.equ OC1Aaddr=$006 ; Output Compare1A Interrupt Vector Address
.equ OC1Baddr=$007 ; Output Compare1B Interrupt Vector Address
.equ OVF1addr=$008 ; Overflow1 Interrupt Vector Address
.equ OVF0addr=$009 ; Overflow0 Interrupt Vector Address
.equ SPIaddr =$00a ; SPI Interrupt Vector Address
.equ URXCaddr=$00b ; USART Receive Complete Interrupt Vector Address
.equ UDREaddr=$00c ; USART Data Register Empty Interrupt Vector Address
.equ UTXCaddr=$00d ; USART Transmit Complete Interrupt Vector Address
.equ ADCCaddr=$00e ; ADC Interrupt Vector Address
.equ ERDYaddr=$00f ; EEPROM Interrupt Vector Address
.equ ACIaddr =$010 ; Analog Comparator Interrupt Vector Address
.equ TWIaddr =$011 ; Irq. vector address for Two-Wire Interface
.equ SPMaddr =$012 ; SPM complete Interrupt Vector Address
.equ SPMRaddr =$012 ; SPM complete Interrupt Vector Address
