Assembly AVR中断-组件中的重置向量处理
我正在使用AVR ATmega16，我正在尝试实现一个计数秒的计数器。我使用Assembly AVR中断-组件中的重置向量处理,assembly,timer,interrupt,reset,avr,Assembly,Timer,Interrupt,Reset,Avr,我正在使用AVR ATmega16，我正在尝试实现一个计数秒的计数器。我使用timer0在重复16次的循环中每1/16秒产生一次中断。给定微处理器的频率（f=4Mhz）和预分频器的值（=1024），我计算需要给定时器一个初始值12 以下是我在课本上找到的示例代码的开头： .include "m16def.inc" .equ start = 12 .equ loops = 16 jmp reset reti (x16) ;there will be needed a total of 16
timer0f=4Mhz=102412.include "m16def.inc"
.equ start = 12
.equ loops = 16
jmp reset
reti (x16) ;there will be needed a total of 16 reti's in order for the next
;instruction to be at 0x12 = 0d18 where the jmp instruction is placed at the
;overflow interrupt handling routine of timer0
jmp TIM0_OVF
reti ;other Handlers
reti*让我通知您，在ATmega16上，
定时器0_OVF程序内存地址=0x121 $000(1) RESET External Pin, Power-on Reset, Brown-out
Reset, Watchdog Reset, and JTAG AVR
Reset
2 $002 INT0 External Interrupt Request 0
3 $004 INT1 External Interrupt Request 1
4 $006 TIMER2 COMP Timer/Counter2 Compare Match
5 $008 TIMER2 OVF Timer/Counter2 Overflow
6 $00A TIMER1 CAPT Timer/Counter1 Capture Event
7 $00C TIMER1 COMPA Timer/Counter1 Compare Match A
8 $00E TIMER1 COMPB Timer/Counter1 Compare Match B
9 $010 TIMER1 OVF Timer/Counter1 Overflow
10 $012 TIMER0 OVF Timer/Counter0 Overflow
11 $014 SPI, STC Serial Transfer Complete
12 $016 USART, RXC USART, Rx Complete
13 $018 USART, UDRE USART Data Register Empty
14 $01A USART, TXC USART, Tx Complete
15 $01C ADC ADC Conversion Complete
16 $01E EE_RDY EEPROM Ready
17 $020 ANA_COMP Analog Comparator
18 $022 TWI Two-wire Serial Interface
19 $024 INT2 External Interrupt Request 2
20 $026 TIMER0 COMP Timer/Counter0 Compare Match
21 $028 SPM_RDY Store Program Memory Ready
RESETjmp RESETTIMER0\u OVFRESETTIMER0\u OVFreti如果我们假设此汇编程序将
reti（x16）retijmpretiretireti（x16）retiRESETTIMER0\u OVFreti