[SOLVED]Timer changes since 1.6

[BennehBoy]

Hi Fred,

I'm revisiting an older project that users a click encoder.

I used to set up the timer like this:

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#define TIMER_ENC  TIM4
static stimer_t TimHandle;

/* Set TIMx instance. */
TimHandle.timer = TIMER_ENC;
/* Timer set to 1ms */
TimerHandleInit(&TimHandle, 1000 - 1, ((uint32_t)(getTimerClkFreq(TIMER_ENC) / (1000000)) - 1));
attachIntHandle(&TimHandle, checkenc);

What do I need to change to make this work in 1.8?

Feel free to point me at a relevant example.

[fpiSTM]

Hi Ben
Check in the wiki the HardwareTimer page and the STM32Examples, you will find what you search from.

[BennehBoy]

I forgot about the wiki

[BennehBoy]

OK so I think I know what I need to do... I want a time based interrupt that will fire every millisecond, so I just need to set up a 1000 hz timer? Based on the below example code?

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  MyTim->setOverflow(10, HERTZ_FORMAT); // 10 Hz
  MyTim->attachInterrupt(Update_IT_callback);
  MyTim->resume();

I'll give it a try.

[Ralf9]

maybe you need this

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MyTim->setMode(2, TIMER_OUTPUT_COMPARE);

viewtopic.php?f=62&t=117

[BennehBoy]

maybe you need this

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MyTim->setMode(2, TIMER_OUTPUT_COMPARE);

viewtopic.php?f=62&t=117

I just need to fire an interrupt every millisecond, if I was doing the pin handling myself (and not using a library) then yeah a comparison would be the way to go.

EDIT As it stands the interrupt doesn't fire my callback, I must be missing something.

[BennehBoy]

Open to suggestions....

globals:

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// Timer STM32
#define TIMER_ENC  TIM4
void checkenc(HardwareTimer*)
{
  clickEncoder->service();
}

setup:

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  TIM_TypeDef *Instance = TIMER_ENC;
  HardwareTimer *stimer_t = new HardwareTimer(Instance);
  stimer_t->setOverflow(1000, HERTZ_FORMAT); // 1000 Hz
  stimer_t->attachInterrupt(checkenc);
  stimer_t->resume();

[fpiSTM]

Like Ralf9 said
For 1.8 you need to do the setMode.
This will not be needed for next release.
Anyway, as you get the example on the master it is not present.
See:
https://github.com/stm32duino/STM32Exam ... 0a3352f716

[BennehBoy]

Doh, my apologies then.

[BennehBoy]

Solved, thanks.