HT47定时器应用

HT47定时器应用

include ht47c20.inc
data .section 'data'
int_count db ?
io_count db ?
code .section at 0 'code'
 org 00h
 jmp start
 org 04h
 reti
 org 08h
 reti
 org 0ch
 reti
 org 10h
 jmp timer_int
;---------------------------------
 org 20h
start:
 clr iNTC0
 clr intc1
 clr adcr.1
 set tmrc.5   ;系统时钟
  MOV a,0ah
  MOV int_count,a
 clr io_count
  MOV a,LOW(65536-12000) ;0.1秒产生中断
  MOV tmral,a
  MOV tmrbl,a
  MOV a,HIGH(65536-12000)
  MOV tmrah,a
  MOV tmrbh,a
 set tmrc.4
 set intc1.0
 set intc0.0
 jmp $
;---------------------------------
timer_int:
 sdz int_count
 reti
 inc io_count
 swapa io_count
 cpl aCC
  MOV pa,a
  MOV a,0ah
  MOV int_count,a
 reti
;*************************************************

;*************************************************

include ht47c20.inc
data .section 'data'
count db ?
code .section at 0 'code'
 org 00h
 jmp start
 org 04h
 reti
 org 08h
 reti
 org 0ch
 reti
 org 10h
 jmp timer_int
;---------------------------------
start: clr intc0
 clr intc1
 clr adcr.1  ;定时/计数器允许
 set tmrc.7  ;计数外部时钟
 clr count
  MOV a,LOW(65536-1000);定时/计数器初值
  MOV tmral,a
  MOV tmrbl,a
  MOV a,HIGH(65536-1000)
  MOV tmrah,a
  MOV tmrbh,a
 set tmrc.4  ;打开定时/计数器
 set intc1.0  ;定时/计数器中断允许
 set intc0.0  ;总中断允许
 jmp $
;---------------------------------
timer_int:
 inc count
 swapa count
 cpl acc
  MOV pa,a
 reti
;************************************************

;************************************************

include ht47c20.inc
data .section 'data'
count db ?

code .section at 0 'code'
 org 00h
 jmp start
 org 04h
 reti
 org 08h
 reti
 org 0ch
 reti
 org 10h
 jmp timer_int
;---------------------------------
start: clr intc0
 clr intc1
 clr adcr.1
 set tmrc.5
 set tmrc.7
 clr count
  MOV a,LOW(65536-60000)
  MOV tmral,a
  MOV tmrbl,a
  MOV a,HIGH(65536-60000)
  MOV tmrah,a
  MOV tmrbh,a
 set tmrc.4
 set intc1.0
 set intc0.0
 jmp $
;---------------------------------
timer_int:
 inc count
 swapa count
 cpl acc
  MOV pa,a
 reti
;*********************************************

本文关键字：定时器  合泰单片机，单片机-工控设备 - 合泰单片机