str912 : Timer connected with 2 source interrupt at the same time

[dhoyen]

Posted on September 16, 2008 at 07:27

str912 : Timer connected with 2 source interrupt at the same time

[dhoyen]

Posted on May 17, 2011 at 09:55

Hi everybody,

Question about timer:

When a clear timer is done (TIM_CounterCmd(TIM0, TIM_CLEAR)), the register will be set to a reset value : 0xFFFC. (maybe somebody from ST can explain me this choice of design :D )

Means: if before, I have enabled an interrupt for the TO,

i will receive a interrupt during the roll from 0xFFFF to 0, immediately after the call of the function: timer clear followed by a start, is it correct ?

By the same, I would know if everybody already tried to connect 2 Timer source of interrupt (ex : ICAP1 and TO) at the same time to a unique Timer?

Is it working ?

In my case seems something wrong in the timer library (look code after: ST lib v2.0) : Impossible to set more than 1 interrupt at the same time.

Is it a silicium limitation, or just a error during the writing of the library ?

Thanks in advance.

Any comments welcome.

Damien.

void TIM_ITConfig(TIM_TypeDef *TIMx, u16 TIM_IT, FunctionalState TIM_Newstate)

{

if(TIM_Newstate == ENABLE)

{

/* TIMx->CR2 = (TIMx->CR2 & 0x00FF) | TIM_IT; */

 

// previous code will remove a previously installed interrupt,

 

// Why this choice ?

 

TIMx->CR2 |= TIM_IT;

 

[ This message was edited by: dhoyen on 12-09-2008 12:15 ]

[ This message was edited by: dhoyen on 12-09-2008 14:36 ]

[dhoyen]

Posted on May 17, 2011 at 09:55

Well,

After few test,

He seems it's working....

No problem from this side, excepting the library...

Regards.

damien