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greg2
greg2
Associate
February 18, 2014
Question

STM32L15x TIM5 Internal Trigger (ITR)

  • February 18, 2014
  • 2 replies
  • 868 views
Posted on February 18, 2014 at 03:18

In RM0038 Table 66 (page 379) the Internal trigger connections (ITR) has no entry for TIM5.

There's no text describing any functional differences for TIM5 over TIM[234] with respect to these ITR connections, nor does the StdPeriph library reject setting those values, nor does the device-specific .  Does anyone know if there are any such connections?

The following forum thread (for STM32F2xx)

/ca09bc80

gives me hope that it is an omission.

#stm32l1 #tim5 #trigger #tim
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2 replies

greg2
greg2Author
Associate
February 18, 2014
Posted on February 18, 2014 at 05:58

OK - now I'm just documenting for ST - I wrote a little test to take a look and here's the results:

TIM5

ITR0 = TIM2

ITR1 = TIM3

ITR2 = TIM4

ITR3 = Unknown

On STM32L152RCT6.

ITR3 is probably TIM9, but I don't have the bandwidth to search further.  Hope this helps someone else.

waclawek.jan
waclawek.jan
Super User
February 18, 2014
Posted on February 18, 2014 at 09:19

Thanks.

The reason for this might be, that only the ''high density line'' members have TIM5 (and TIM6 and TIM7), and those came later than the other ''lines''. It takes some guesswork to find out this and also to find out which exactly are the members of various ''lines'', due to the incredible mess the STM32 documentation is.

It's no excuse of course - it's a shame.

JW
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