Time controlled by timer

[mchnani]

Posted on June 29, 2010 at 17:08

Time controlled by timer

[lowpowermcu]

Posted on May 17, 2011 at 15:09

Hi moussa,

You can find in the link below a set of examples that are useful for you.

In TIM4 example, you will fin what you are looking for :)

http://www.st.com/products/support/micro/files/stm8sfwlib.zip

Hope this helps and tell me if It is OK.

With regards,

MCU Lüfter,

be happy be low power

[sylvain_laurent]

Posted on May 17, 2011 at 15:09

Hi,

If you want to generate an interrupt each 1ms, you can use the output compare.

And it's run very well.

Example in library TIM2.

Regards.

[lowpowermcu]

Posted on May 17, 2011 at 15:09

Hi Moussa,

Why Init_TIM2

() is not called in main( ) ?

some question regarding WaitDelay

( ) ???

Tell me if it ok or ????

Regards,.

MCU Lüfter

[mchnani]

Posted on May 17, 2011 at 15:09

Hi,

I tested just now the exemple given in frame library of STM8 and the result is bad (

the time variable is remained the initial value)

. see my code and tell me it's ok or not. thank you so much  

Regards

#include ''stm8s.h''

#include ''stm8s_tim2.h''

#include ''stm8s_it.h''

u16 GTimeStamp=0;

void Init_TIM2(void)

{

TIM2_TimeBaseInit(TIM2_PRESCALER_128,124);

//TIM2_UpdateRequestConfig(TIM2_UPDATESOURCE_GLOBAL);

//TIM2_UpdateRequestConfig(TIM2_UPDATESOURCE_GLOBAL);

TIM2_ClearFlag(TIM2_FLAG_UPDATE);

TIM2_ITConfig(TIM2_IT_UPDATE,ENABLE);

enableInterrupts();

TIM2_Cmd(ENABLE);

}

/** Wait a delay

* @param[in] Delay based on timer Tick

* @return None

**/

void WaitDelay(u16 Delay)

{

GTimeStamp = 0x00;

sim();

while (GTimeStamp <= Delay);

rim();

}

void TIM2_IRQHandler (void)

{

if (TIM2_GetITStatus(TIM2_IT_UPDATE)!= RESET)

{

GTimeStamp++;

TIM2_ClearITPendingBit(TIM2_IT_UPDATE);

}

}

void main (void)

{

//GPIO-------------------------------

/* Entrées et sorties du micro*/

// Configure PF.4 en entrée flotante PRESENCE SECTEUR

GPIOF->CR1&=~0x10;

GPIOF->DDR&=~0x10;

// Configure PB.5 en entrée flotante COURANT BAES

// Configure PB.4 en entrée flotante COURANT BAEH

// Configure PB.3 en entrée flotante TELECOMMANDE

// Configure PB.2 en entrée flotante TENSION Leds Vertes

// Configure PB.1 en entrée flotante Detection presence batterie BAES

// Configure PB.0 en entrée flotante Detection presence batterie BAEH

GPIOB->CR1&=~0x3F;

GPIOB->DDR&=~0x3F;

// Configure PE.5 en sortie PushPull Pilotage Alim driver BAEH

GPIOE->DDR|= 0x20;

GPIOE->CR1|= 0x20;

// Configure PC.4 en sortie PushPull Pilotage Leds Vertes

GPIOC->DDR|= 0x10;

GPIOC->CR1|= 0x10;

// Configure PD.0 en sortie PushPull Pilotage charge batterie BAEH

// Configure PD.2 en sortie PushPull Pilotage charge batterie BAES

// Configure PD.3 en sortie PushPull Pilotage SATI Vert

// Configure PD.4 en sortie PushPull Pilotage SATI Jaune

// Configure PD.7 en sortie PushPull Pilotage Alim driver BAES

GPIOD->DDR|= 0x9D;

GPIOD->CR1|= 0x9D;

while (1) {

if(GTimeStamp <= 200)

{

GPIOD->ODR &= 0x10;

GPIOD->ODR |= 0x10;

}

else

{

GPIOD->ODR &= 0x00;

GPIOD->ODR |= 0x00;

}

while (1);

}

Hi moussa,

You can find in the link below a set of examples that are useful for you.

In TIM4 example, you will fin what you are looking for :)

http://www.st.com/products/support/micro/files/stm8sfwlib.zip

Hope this helps and tell me if It is OK.

With regards,

MCU Lüfter,

be happy be low power

Hello,

I'm using a STM8S105k4 and i need some program to generate an interrupt each 1ms for control of time (for example, create a counter value wich is incremented each interrupt)

Thank you for your help,

[mchnani]

Posted on May 17, 2011 at 15:09

Hi lowpowermcu,

i added Init_TIM2() to the main() and the interrupt is generated but the flag interrupt is remained in permanant at high level. i dont know

how to pass the flag interrupt to the low state at the end of the increment of the time value.

when run :

@far @interrupt void NonHandledInterrupt (void)

{

 /* in order to detect unexpected events during development,

    it is recommended to set a breakpoint on the following instruction

 */

 return;

}

  

Best regards,

Hi Moussa,

Why Init_TIM2

() is not called in main( ) ?

some question regarding WaitDelay

( ) ???

Tell me if it ok or ????

Regards,.

MCU Lüfter

Hi,

I tested just now the exemple given in frame library of STM8 and the result is bad (

the time variable is remained the initial value)

. see my code and tell me it's ok or not. thank you so much  

Regards

#include ''stm8s.h''

#include ''stm8s_tim2.h''

#include ''stm8s_it.h''

u16 GTimeStamp=0;

void Init_TIM2(void)

{

TIM2_TimeBaseInit(TIM2_PRESCALER_128,124);

//TIM2_UpdateRequestConfig(TIM2_UPDATESOURCE_GLOBAL);

//TIM2_UpdateRequestConfig(TIM2_UPDATESOURCE_GLOBAL);

TIM2_ClearFlag(TIM2_FLAG_UPDATE);

TIM2_ITConfig(TIM2_IT_UPDATE,ENABLE);

enableInterrupts();

TIM2_Cmd(ENABLE);

}

/** Wait a delay

* @param[in] Delay based on timer Tick

* @return None

**/

void WaitDelay(u16 Delay)

{

GTimeStamp = 0x00;

sim();

while (GTimeStamp <= Delay);

rim();

}

void TIM2_IRQHandler (void)

{

if (TIM2_GetITStatus(TIM2_IT_UPDATE)!= RESET)

{

GTimeStamp++;

TIM2_ClearITPendingBit(TIM2_IT_UPDATE);

}

}

void main (void)

{

//GPIO-------------------------------

/* Entrées et sorties du micro*/

// Configure PF.4 en entrée flotante PRESENCE SECTEUR

GPIOF->CR1&=~0x10;

GPIOF->DDR&=~0x10;

// Configure PB.5 en entrée flotante COURANT BAES

// Configure PB.4 en entrée flotante COURANT BAEH

// Configure PB.3 en entrée flotante TELECOMMANDE

// Configure PB.2 en entrée flotante TENSION Leds Vertes

// Configure PB.1 en entrée flotante Detection presence batterie BAES

// Configure PB.0 en entrée flotante Detection presence batterie BAEH

GPIOB->CR1&=~0x3F;

GPIOB->DDR&=~0x3F;

// Configure PE.5 en sortie PushPull Pilotage Alim driver BAEH

GPIOE->DDR|= 0x20;

GPIOE->CR1|= 0x20;

// Configure PC.4 en sortie PushPull Pilotage Leds Vertes

GPIOC->DDR|= 0x10;

GPIOC->CR1|= 0x10;

// Configure PD.0 en sortie PushPull Pilotage charge batterie BAEH

// Configure PD.2 en sortie PushPull Pilotage charge batterie BAES

// Configure PD.3 en sortie PushPull Pilotage SATI Vert

// Configure PD.4 en sortie PushPull Pilotage SATI Jaune

// Configure PD.7 en sortie PushPull Pilotage Alim driver BAES

GPIOD->DDR|= 0x9D;

GPIOD->CR1|= 0x9D;

while (1) {

if(GTimeStamp <= 200)

{

GPIOD->ODR &= 0x10;

GPIOD->ODR |= 0x10;

}

else

{

GPIOD->ODR &= 0x00;

GPIOD->ODR |= 0x00;

}

　

while (1);

}

Hi moussa,

You can find in the link below a set of examples that are useful for you.

In TIM4 example, you will fin what you are looking for :)

http://www.st.com/products/support/micro/files/stm8sfwlib.zip

Hope this helps and tell me if It is OK.

With regards,

MCU Lüfter,

be happy be low power

Hello,

I'm using a STM8S105k4 and i need some program to generate an interrupt each 1ms for control of time (for example, create a counter value wich is incremented each interrupt)

Thank you for your help,

[lowpowermcu]

Posted on May 17, 2011 at 15:09

Hi moussa,

If the interrupt is generated you should be pointed at the following IRQ:

@far @interrupt void TIM2_UPD_OVF_BRK_IRQHandler(void)

The TIM2 update flag is cleared by the following function:

TIM2_ClearITPendingBit(TIM2_IT_UPDATE); which write to 0 the ''UIF'' bi in TIM2_SR1 register.

Hope this helps otherwise I need much details.

Good luck Moussa !

Regards,

MCU Lüfter

[mchnani]

Posted on May 17, 2011 at 15:09

Hi lowpowermcu,

to be pointed at the handler (when the interrupt is generated) i must added following code in the main() or not : 

#ifdef _RAISONANCE_

void TIM2_UPD_OVF_BRK_IRQHandler( void )

#else // COSMIC

FAR @interrupt void TIM2_UPD_OVF_BRK_IRQHandler(void)

#endif

{

 

  GTimeStamp++;

  TIM2_ClearITPendingBit(TIM2_IT_UPDATE);

 

}

thank you,

Hi moussa,

If the interrupt is generated you should be pointed at the following IRQ:

@far @interrupt void TIM2_UPD_OVF_BRK_IRQHandler(void)

The TIM2 update flag is cleared by the following function:

TIM2_ClearITPendingBit(TIM2_IT_UPDATE); which write to 0 the ''UIF'' bi in TIM2_SR1 register.

Hope this helps otherwise I need much details.

Good luck Moussa !

Regards,

MCU Lüfter

Hi lowpowermcu,

i added Init_TIM2() to the main() and the interrupt is generated but the flag interrupt is remained in permanant at high level. i dont know

how to pass the flag interrupt to the low state at the end of the increment of the time value.

when run :

@far @interrupt void NonHandledInterrupt (void)

{

 /* in order to detect unexpected events during development,

    it is recommended to set a breakpoint on the following instruction

 */

 return;

}

  

Best regards,

Hi Moussa,

Why Init_TIM2

() is not called in main( ) ?

some question regarding WaitDelay

( ) ???

Tell me if it ok or ????

Regards,.

MCU Lüfter

Hi,

I tested just now the exemple given in frame library of STM8 and the result is bad (

the time variable is remained the initial value)

. see my code and tell me it's ok or not. thank you so much  

Regards

#include ''stm8s.h''

#include ''stm8s_tim2.h''

#include ''stm8s_it.h''

u16 GTimeStamp=0;

void Init_TIM2(void)

{

TIM2_TimeBaseInit(TIM2_PRESCALER_128,124);

//TIM2_UpdateRequestConfig(TIM2_UPDATESOURCE_GLOBAL);

//TIM2_UpdateRequestConfig(TIM2_UPDATESOURCE_GLOBAL);

TIM2_ClearFlag(TIM2_FLAG_UPDATE);

TIM2_ITConfig(TIM2_IT_UPDATE,ENABLE);

enableInterrupts();

TIM2_Cmd(ENABLE);

}

/** Wait a delay

* @param[in] Delay based on timer Tick

* @return None

**/

void WaitDelay(u16 Delay)

{

GTimeStamp = 0x00;

sim();

while (GTimeStamp <= Delay);

rim();

}

void TIM2_IRQHandler (void)

{

if (TIM2_GetITStatus(TIM2_IT_UPDATE)!= RESET)

{

GTimeStamp++;

TIM2_ClearITPendingBit(TIM2_IT_UPDATE);

}

}

void main (void)

{

//GPIO-------------------------------

/* Entrées et sorties du micro*/

// Configure PF.4 en entrée flotante PRESENCE SECTEUR

GPIOF->CR1&=~0x10;

GPIOF->DDR&=~0x10;

// Configure PB.5 en entrée flotante COURANT BAES

// Configure PB.4 en entrée flotante COURANT BAEH

// Configure PB.3 en entrée flotante TELECOMMANDE

// Configure PB.2 en entrée flotante TENSION Leds Vertes

// Configure PB.1 en entrée flotante Detection presence batterie BAES

// Configure PB.0 en entrée flotante Detection presence batterie BAEH

GPIOB->CR1&=~0x3F;

GPIOB->DDR&=~0x3F;

// Configure PE.5 en sortie PushPull Pilotage Alim driver BAEH

GPIOE->DDR|= 0x20;

GPIOE->CR1|= 0x20;

// Configure PC.4 en sortie PushPull Pilotage Leds Vertes

GPIOC->DDR|= 0x10;

GPIOC->CR1|= 0x10;

// Configure PD.0 en sortie PushPull Pilotage charge batterie BAEH

// Configure PD.2 en sortie PushPull Pilotage charge batterie BAES

// Configure PD.3 en sortie PushPull Pilotage SATI Vert

// Configure PD.4 en sortie PushPull Pilotage SATI Jaune

// Configure PD.7 en sortie PushPull Pilotage Alim driver BAES

GPIOD->DDR|= 0x9D;

GPIOD->CR1|= 0x9D;

while (1) {

if(GTimeStamp <= 200)

{

GPIOD->ODR &= 0x10;

GPIOD->ODR |= 0x10;

}

else

{

GPIOD->ODR &= 0x00;

GPIOD->ODR |= 0x00;

}

　

while (1);

}

Hi moussa,

You can find in the link below a set of examples that are useful for you.

In TIM4 example, you will fin what you are looking for :)

http://www.st.com/products/support/micro/files/stm8sfwlib.zip

Hope this helps and tell me if It is OK.

With regards,

MCU Lüfter,

be happy be low power

Hello,

I'm using a STM8S105k4 and i need some program to generate an interrupt each 1ms for control of time (for example, create a counter value wich is incremented each interrupt)

Thank you for your help,

[lowpowermcu]

Posted on May 17, 2011 at 15:09

Hi moussa,

I don't know which compiler you are using but you have to add your code related to TIM2 Interrupt Service in stm8s_it.c

Regards,

MCU Lüfter

[mchnani]

Posted on May 17, 2011 at 15:09

Hi lowpowermcu,

ok, but when i added the code in the TIM2 interrupt.

Result :  

Running Linker

clnk -m Debug\luminaire1025.map -l''C:\Program Files\COSMIC\CXSTM8_16K\Lib'' -o Debug\luminaire1025.sm8 Debug\luminaire1025.lkf

#error clnk Debug\luminaire1025.lkf:73 Debug\stm8_interrupt_vector.o: symbol f_NonHandledInterrupt multiply defined (Debug\stm8s_it.o)

The command: ''clnk -m Debug\luminaire1025.map -l''C:\Program Files\COSMIC\CXSTM8_16K\Lib'' -o Debug\luminaire1025.sm8 Debug\luminaire1025.lkf '' has failed, the returned value is: 1

exit code=1.

luminaire1025.elf - 3 error(s), 0 warning(s)

Thank you in advance

[lowpowermcu]

Posted on May 17, 2011 at 15:09

Hi moussa,

Probably you have a non-coherence between stm8s_it.c, stm8s.it_h and interrupt_vector.c.

Why you are not using the template provided by ST in the standard library. It is easier and faster for start-up ?

That was my case when I started enjoying with STM8S micros.

Tell me if It is OK now.

Regards,

MCU Lüfter