stm8s tim1外部时钟模式2对外部脉冲计数改为库函数c程序

只看该作者 · 2013-7-11 15:07

                                                         stm8/

#include "mapping.inc"

  #include "stm8s105c6.inc"

segment 'rom'

main.l

; initialize SP

ldw X,#stack_end

ldw SP,X

#ifdef RAM0

; clear RAM0

ram0_start.b EQU $ram0_segment_start

ram0_end.b EQU $ram0_segment_end

ldw X,#ram0_start

clear_ram0.l

clr (X)

incw X

cpw X,#ram0_end

jrule clear_ram0

#endif

#ifdef RAM1

; clear RAM1

ram1_start.w EQU $ram1_segment_start

ram1_end.w EQU $ram1_segment_end

ldw X,#ram1_start

clear_ram1.l

clr (X)

incw X

cpw X,#ram1_end

jrule clear_ram1

#endif

; clear stack

stack_start.w EQU $stack_segment_start

stack_end.w EQU $stack_segment_end

ldw X,#stack_start

clear_stack.l

clr (X)

incw X

cpw X,#stack_end

jrule clear_stack

;烧程序前要先将PB3引脚的第二功能通过STVP改为TM1_ETR;

intel

BRES PB_DDR,#3 ;初始化TIM1_ETR为无中断功能的输入方式；

BSET PB_CR1,#3

BRES PB_CR2,#3

  BSET PD_DDR,#0 ;初始化PD0和PD7为推挽输出；将PD0的PWM信号输入TIM1_ETR中；

BSET PD_CR1,#0

BRES PD_CR2,#0

BSET PD_DDR,#7

BSET PD_CR1,#7

BRES PD_CR2,#7

;计数器初始化

MOV TIM3_PSCR,#5  ;初始化预分频器TIM2_PSCR

  MOV TIM3_ARRH,#{HIGH 50000} ;初始化自动重装初值寄存器TIM2_ARR

  MOV TIM3_ARRL,#{LOW 50000}

   ;初始化控制寄存器TIM2_CR1,定义为向上计数、允许更新、仅允行砑剖饕绯鍪敝卸媳曛居行А⑵舳ㄊ逼?
  MOV TIM3_CR1,#05H

  ;初始化输出比较

MOV TIM3_CCMR2,#1101000B  ;选择输出比较方式、选择输出比较嫫鞯脑ぷ霸毓δ堋⒀≡馪WM1模式

MOV TIM3_CCR2H,#{HIGH 25000} ;初始化TIMX_CCRn

MOV TIM3_CCR2L,#{LOW 25000}

BRES TIM3_CCER1,#5  ;初始化捕获\比较使能寄存器?
BSET TIM3_CCER1,#4



;外部时钟模式2

  MOV TIM1_ETR,#11010000B ;ETP为选择触发极性（0不反相，1反相），ETPS位选择外触发输入信号的分频系数，ETR为1，选择外部时钟；

MOV TIM1_SMCR,#00H  ;将SMS置0；

MOV TIM1_ARRH,#{HIGH 1} ;初始化自动重装初值寄存器TIM1_ARR

  MOV TIM1_ARRL,#{LOW 1}

  MOV TIM1_RCR,#00H  ;初始化重复计数寄存器TIM1_RCR

MOV TIM1_CR1,#04H  ;初始化控制寄存器TIM1_CR1，定义为向上计数、允许更新、仅允许计数器溢出时中断标志有效；

BSET TIM1_IER,#0 ;允许中断；

BSET TIM1_CR1,#0 ;CEN=1，启动计数器；

RIM

JRT $

interrupt TIM1_interrupt_over

TIM1_interrupt_over.L

  BRES TIM1_SR1,#0  ;清除更新中断标志

BCPL PD_ODR,#7

IRET

IRET

IRET

IRET

IRET

interrupt NonHandledInterrupt

NonHandledInterrupt.l

iret

motorola

segment 'vectit'

dc.l {$82000000+main} ; reset

dc.l {$82000000+NonHandledInterrupt} ; trap

dc.l {$82000000+NonHandledInterrupt} ; irq0

dc.l {$82000000+NonHandledInterrupt} ; irq1

dc.l {$82000000+NonHandledInterrupt} ; irq2

dc.l {$82000000+NonHandledInterrupt} ; irq3

dc.l {$82000000+NonHandledInterrupt} ; irq4

dc.l {$82000000+NonHandledInterru pt} ; irq5

dc.l {$82000000+NonHandledInterrupt} ; irq6

dc.l {$82000000+NonHandledInterrupt} ; irq7

dc.l {$82000000+NonHandledInterrupt} ; irq8

dc.l {$82000000+NonHandledInterrupt} ; irq9

dc.l {$82000000+NonHandledInterrupt} ; irq10

dc.l {$82000000+TIM1_interrupt_over} ; irq11

dc.l {$82000000+NonHandledInterrupt} ; irq12

dc.l {$82000000+NonHandledInterrupt} ; irq13

dc.l {$82000000+NonHandledInterrupt} ; irq14

dc.l {$82000000+NonHandledInterrupt} ; irq15

dc.l {$82000000+NonHandledInterrupt} ; irq16

dc.l {$82000000+NonHandledInterrupt} ; irq17

dc.l {$82000000+NonHandledInterrupt} ; irq18

dc.l {$82000000+NonHandledInterrupt} ; irq19

dc.l {$82000000+NonHandledInterrupt} ; irq20

dc.l {$82000000+NonHandledInterrupt} ; irq21

dc.l {$82000000+NonHandledInterrupt} ; irq22

dc.l {$82000000+NonHandledInterrupt} ; irq23

dc.l {$82000000+NonHandledInterrupt} ; irq24

dc.l {$82000000+NonHandledInterrupt} ; irq25

dc.l {$82000000+NonHandledInterrupt} ; irq26

dc.l {$82000000+NonHandledInterrupt} ; irq27

dc.l {$82000000+NonHandledInterrupt} ; irq28

dc.l {$82000000+NonHandledInterrupt} ; irq29

end

stm8s tim1外部时钟模式2对外部脉冲计数 改为库函数c程序

stm8s tim1外部时钟模式2对外部脉冲计数改为库函数c程序