ZitierenBitter, könnte jemand mir helfen, ich dank euch voraus
test Programm Timer /Counter2-wake up funktionieren nicht richtig
das programm ist einfach:Timer/Counter1 zaehlen 5 Sekunden dann das
controller geht zu sleep Mode, mit Timer/Counter2 soll er wieder aufgewacht wird.
Timer/Counter2 läuft asynchronous
When Timer/Counter2 operates asynchronously, some considerations must be taken.
• Warning: When switching between asynchronous and synchronous clocking of
Timer/Counter2, the timer registers TCNT2, OCR2 and TCCR2 might get corrupted.
A safe procedure for switching clock source is:
1. Disable the Timer/Counter2 interrupts OCIE2 and TOIE2.
2. Select clock source by setting AS2 as appropriate.
3. Write new values to TCNT2, OCR2 and TCCR2.
4. To switch to asynchronous operation: Wait for TCN2UB, OCR2UB and
TCR2UB.
5. Clear the Timer/Counter2 interrupt flags.
6. Clear the TOV2 and OCF2 flags in TIFR.
7. Enable interrupts, if needed.
• When writing to one of the registers TCNT2, OCR2 or TCCR2, the value is
transferred to a temporary register and latched after two positive edges on TOSC1.
The user should not write a new value before the contents of the temporary register
have been transferred to their destination. Each of the three mentioned registers
have their individual temporary register. For example, writing to TCNT2 does not
disturb an OCR2 write in progress. To detect that a transfer to the destination
register has taken place, an Asynchronous Status Register (ASSR) has been
implemented.
• When entering a Power Save Mode after having written to TCNT2, OCR2 or
TCCR2, the user must wait until the written register has been updated if
Timer/Counter2 is used to wake up the device. Otherwise, the MCU will go to sleep
before the changes have had any effect. This is extremely important if the Output
Compare2 interrupt is used to wake up the device; Output Compare is disabled
during write to OCR2 or TCNT2. If the write cycle is not finished (i.e., the user goes
to sleep before the OCR2UB bit returns to zero), the device will never get a compare
match and the MCU will not wake up.
hier ist das Code:
Code:.include"8535def.inc" .def temp=r16 .def temp2=r17 .def crc8=r24 .org 0X000 rjmp reset ;reset handler .org 0X008 rjmp TIM1_OVF ;time1 overflow handler .org 0X004 rjmp TIM2_OVF ; Timer2 Overflow Handler .equ quartz=7372800 ;Seite 60,64,XTAL->Baudrategenerator .equ baud=9600 .equ start=65536-39060 .equ highvalue=high(start) .equ lowvalue=low(start) reset: ldi temp,low(RAMEND) out spl,temp ;Seite 21 ldi temp,high(RAMEND) ;Stackpoint initialisieren out sph,temp ldi temp,1<<TOIE1 out TIMSK,temp ;time1 interrupt ein , Seite 27 ldi temp,0b00000101 ;Seite 38 out TCCR1B,temp ;bit2-0 define the Prescaling sei loop: ldi temp,0b11111100 out portb,temp rjmp loop sleepe: ldi temp,1<<SE out mcucr,temp ldi temp,(1<<sm0)+(1<<sm1) out mcucr,temp ;set bit Nr 5 und 4 in mcucr register sleep ret TIM2_OVF: ldi temp,(0<<OCIE2)+(0<<TOIE2) out TIMSK,temp ;cbi TIMSK,OCIE2 ;cbi TIMSK,TOIE2 ldi temp,1<<as2 out assr,temp ldi temp,50 out TCNT2,temp ldi temp,0b11111111 out OCR2,temp ;Timer/Counter2 Output Compare Register ldi temp,0b00000001 out TCCR2,temp wait1: in temp,ASSR SBRC temp,2 ;tcn2ub ;sbic ASSR,TCN2UB rjmp wait1 wait2: in temp,ASSR SBRC temp,1 ;OCR2UB ;sbic ASSR,OCR2UB rjmp wait2 wait3: in temp,ASSR SBRC temp,0 ;TCR2UB ;sbic ASSR,TCR2UB rjmp wait3 in temp,TIFR ldi temp,(1<<OCF2)+(1<<TOV2) out TIFR,temp ;sbi TIFR,OCF2 OCF2 is cleared by writing a logical “1” to the flag ;sbi TIFR,TOV2 TOV2 is cleared by writing a logical “1” to the flag. sei reti TIM1_OVF: ldi temp,highvalue out TCNT1H,temp ;Datenblaette Seite 38 ldi temp,lowvalue ;Startwert des Timers einstellen out TCNT1L,temp ;39060 Takt ist 5 Sekunde ;nach 5 sekunde ist interrupt ausgeloest rcall sleepe ;aufrufen Sleep Funktion reti
Bitter, könnte jemand mir helfen, ich dank euch voraus
das war verbessert Code ,aber wirkt trotzdem nicht, das controlle wacht nicht auf, trotz Asynchronous mode ist doch eingestelltCode:.include"8535def.inc" .def temp=r16 .def temp2=r17 .def crc8=r24 .org 0X000 rjmp reset ;reset handler .org 0X004 rjmp TIM2_OVF .org 0X008 rjmp TIM1_OVF .equ quartz=7372800 ;Seite 60,64,XTAL->Baudrategenerator .equ baud=9600 .equ start=65536-39060 .equ highvalue=high(start) .equ lowvalue=low(start) reset: ldi temp,low(RAMEND) out spl,temp ;Seite 21 ldi temp,high(RAMEND) ;Stackpoint initialisieren out sph,temp ldi temp,highvalue out TCNT1H,temp ;Datenblaette Seite 38 ldi temp,lowvalue ;Startwert des Timers einstellen out TCNT1L,temp ldi temp,1<<TOIE1 out TIMSK,temp ;time1 interrupt ein , Seite 27 ldi temp,0b00000101 ;Seite 38 out TCCR1B,temp ;bit2-0 define the Prescaling ldi temp,1<<SE out mcucr,temp ori temp,0b00110000 ;sleep enable out mcucr,temp sei loop: ldi temp,0b11111100 out portb,temp ldi temp,0b11111111 out DDRB,temp rjmp loop initial: in temp,timsk andi temp,0b00111111 ;ldi temp,(0<<OCIE2)+(0<<TOIE2) out TIMSK,temp ldi temp,1<<as2 out assr,temp ldi temp,200 out TCNT2,temp ldi temp,0b00000011 out TCCR2,temp ldi temp,0b11111111 wait1: in temp,ASSR sbrs temp,2 ;tcn2ub rjmp wait1 wait2: in temp,ASSR sbrs temp,0 ;TCR2UB rjmp wait2 wait3: in temp,ASSR sbrs temp,0 ;TCR2UB rjmp wait3 ldi temp,(1<<TOIE2) out TIMSK,temp sei ldi temp2,0b11111111 out portb,temp2 sleep rcall reset ret TIM1_OVF: ldi temp,highvalue out TCNT1H,temp ;Datenblaette Seite 38 ldi temp,lowvalue ;Startwert des Timers einstellen out TCNT1L,temp ;39060 Takt ist 5 Sekunde ;nach 5 sekunde ist interrupt ausgeloest rcall initial ;aufrufen Sleep Funktion reti TIM2_OVF: ldi temp,200 out TCNT2,temp rcall reset reti
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