Timer1 not giving the interrupt in expected duration

[HTiwa.11]

HI All,

I am facing issue with STM8S103F2 controller Timer1. I am configuring timer1 for 5 sec, but it is giving me interrupt in 10 mili second only. It is not taking my prescaler value. can anyone help me on this, i am putting my code:

stm8/

#include "mapping.inc"

#include "stm8s103f.inc"

segment 'rom'

.main:

 rim

 ;ld a,#$

 ;ld TIM1_SMCR,A

 ld a,#$1

 ld TIM1_EGR,a

 ld a,#$9

 ld TIM1_PSCRL,a

 LD a,#$1

 ld TIM1_RCR,A

 ld a,#$4c

 ld TIM1_ARRH,a

 ld a,#$4a

 ld TIM1_ARRL,a

 ld a,#$1

 ld TIM1_IER,a

 ld a,#$1

 ld TIM1_CR1,a

infinite_loop.l

jra infinite_loop

interrupt NonHandledInterrupt

NonHandledInterrupt.l

iret

.NonHandledInterrupt1

 bres TIM1_SR1,#0

 iret

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+NonHandledInterrupt} ; 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+NonHandledInterrupt1} ; 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

[Piranha]

Descriptions of prescaler registers in reference manual answer this very clearly!

[HTiwa.11]

Thanks for reply but Descriptions of prescaler registers in reference manual not answering clearly. I tried my possible combinations. Please, if you know which register i have to configure for enabling the prescaler, please tell me clearly.

[Piranha]

No, it does. RM0016 sections 17.7.17 and 17.7.18 have 4 sentences each, but you are reading only the first 2 of those and ignoring the rest...

[HTiwa.11]

I got, I have previously given value in my prescaler as "9", but prescaler value in Timer1 not in the power of 2. If that time only, if you have given me clear answer then it will save my time.