STM8S103F2 TIMER EXAMPLE(needed please)

[keskintaylan]

Posted on November 24, 2009 at 06:49

STM8S103F2 TIMER EXAMPLE(needed please)

[keskintaylan]

Posted on May 17, 2011 at 15:05

Dear Mozra, thanks for your reply.

I tried your code.But counters still don't work.

While debugging i can see TIM2's REGISTERS. And also TIM2_CNTRH & TIM2_CNTRL.

I check these step by step, and there isn't any count.They are always ''0'' Is it normal? Is it a bug? Also i put a breakpoint in

''void TIM2_UPD_OVF_BRK_IRQHandler(void) interrupt 13''

And program never stopped.

What's wrong? :-[

I really need it. It's very important for me!

[ This message was edited by: keskintaylan on 19-11-2009 15:39 ]

[mozra27]

Posted on May 17, 2011 at 15:05

Hi,

you can find below an example using Timer2:

/* TimerTick = 5 ms

Warning: fcpu must be equal to 16MHz

fck_cnt = fck_psc/presc = fcpu/512 = 31.25 kHz --> 1 tick every 32 µs

==> 5 ms / 32 µs = 156 ticks

*/

TIM2_TimeBaseInit( TIM2_PRESCALER_512, 156);

TIM2_UpdateRequestConfig(TIM2_UPDATESOURCE_GLOBAL);

TIM2_ITConfig(TIM2_IT_UPDATE, ENABLE);

/* Enable interrupts */

enableInterrupts();

TIM2_Cmd(ENABLE);

Regards

mozra

[keskintaylan]

Posted on May 17, 2011 at 15:05

Hi everybody.

I have a problem with timers on STM8S103F2.

I'm using RIDE. I need UPD/OV interrupt urgently. I tried all of timer examples but i have nothing.Counters didin't work.(on debug screen)They are always ''0''.Interrupt was never occured!

PLEASE! give me an example of TIM2 UPD interrupt or tell some tips. Some told that i must edit STM8S.h, but how,where,what?

I will be appreciate if answered quickly...

Thank you...

[ This message was edited by: keskintaylan on 19-11-2009 12:05 ]

[keskintaylan]

Posted on May 17, 2011 at 15:05

Please & Please:

Send me a full project about TIM2 UPD&OV writing with RIDE. GPIOA.3 must toggle in interrupt routine.

Please send with using ''h'' & ''c'' files.

And please try yourself, be sure it's working.

Very very appreciate who helps.

THANK YOU!

[mozra27]

Posted on May 17, 2011 at 15:05

Hi,

Can you please check the status for the PCKEN15 bit in CLK_PCKENR1 this bit should be kept set(reset value)?

you can set this bit using:

CLK_PeripheralClockConfig(CLK_PERIPHERAL_TIMER2, ENABLE);

Regards

mozra

[keskintaylan]

Posted on May 17, 2011 at 15:05

Dear Mozra

While debugging

CLK_PCKENR1 = 0xFF;

[ This message was edited by: keskintaylan on 19-11-2009 16:39 ]

[keskintaylan]

Posted on May 17, 2011 at 15:05

Dear Mozra,

I used STVD as you suggest.Yes timer is working.Thank you for your suggest.I guess too that RIDE have issues.

But interrupt didn't work.

Here is my codes:

.

.

.

.

void Init_TIM2(void)

{

/* TimerTick = 5 ms

Warning: fcpu must be equal to 16MHz

fck_cnt = fck_psc/presc = fcpu/512 = 31.25 kHz --> 1 tick every 32 µs

==> 5 ms / 32 µs = 156 ticks

*/

TIM2_TimeBaseInit( TIM2_PRESCALER_512, 156);

TIM2_UpdateRequestConfig(TIM2_UPDATESOURCE_GLOBAL);

TIM2_ITConfig(TIM2_IT_UPDATE, ENABLE);

/* Enable interrupts */

enableInterrupts();

TIM2_Cmd(ENABLE);

}

void main(void)

{

Init_TIM2();

GPIO_Init(GPIOA, GPIO_PIN_3, GPIO_MODE_OUT_PP_LOW_FAST);

while(1);

}

.

.

.

.

[keskintaylan]

Posted on May 17, 2011 at 15:05

in ''stm8s_it.c''

#include ''stm8s_it.h''

.

.

.

#ifdef _COSMIC_

@far @interrupt void TIM2_UPD_OVF_BRK_IRQHandler(void)

#else /* _RAISONANCE_ */

void TIM2_UPD_OVF_BRK_IRQHandler(void) interrupt 13

#endif /* _COSMIC_ */

{

//GPIO_WriteReverse(GPIOA, GPIO_PIN_3);

GPIO_WriteHigh(GPIOA, GPIO_PIN_3);

TIM2_ClearITPendingBit(TIM2_IT_UPDATE);

/* In order to detect unexpected events during development,

it is recommended to set a breakpoint on the following instruction.

*/

}

.

.

.

[mozra27]

Posted on May 17, 2011 at 15:05

Hi,

It seems that is an issue with RIDE and is under investigation you can use STVD + Raisonance to avoid temporarily this issue

Regards

mozra

[keskintaylan]

Posted on May 17, 2011 at 15:05

I did it, yeah i did it! :-]

The problem is weird...:

I disassemble the code. I check this '' TIM2->IER = 1; '' and i see in disassembler '' MOV 0x5301,#0x01 '' but TIM2 interrupt register address is 0x5303. Then i check STM8S.h -> I found there :

typedef struct TIM2_struct

{

vu8 CR1;

#if defined STM8S103

vu8 RESERVED1;

vu8 RESERVED2;

#endif

vu8 IER;

vu8 SR1;

.

.

.

.

}

Then i realize that the compiler don't see reserved bits.Thus IER's address was 5301. So i remove defines and tataaa... program worked.

But still i don't understand why compiler passover reserved bits? Why ''#if defined STM8S103'' didn't work?

Thank you anyway mozra...

[ This message was edited by: keskintaylan on 21-11-2009 13:19 ]