TIM2 OC ACTIVE mode issue

RN · ‎2018-06-21

Posted on June 21, 2018 at 13:47

Hello

I have been experimenting with OC mode of the TIMER2 and couldnt able understand the terms

OCPolarity and Active and inactive mode.

below trace i got from this configuration

/* Common configuration for all channels */

sConfig.OCMode = TIM_OCMODE_ACTIVE;

sConfig.OCPolarity = TIM_OCPOLARITY_HIGH;

I was expecting OCMODE_ACTIVE means channel will be held HIGH , but on a match channel forced to low,

why is that ? can you please help me to understand this ?

#stm32

henry.dick · ‎2018-06-21

Posted on June 21, 2018 at 14:31

'

I was expecting OCMODE_ACTIVE means channel will be held HIGH'

no reason to expect anything. trace the code / macros and compare it to the datasheet to see how the OC module is initialized and you will know for sure what that macro is.

RN · ‎2018-06-21

Posted on June 21, 2018 at 16:27

Hello dhenry , Thanks for the reply ,

I indeed gone through the RM to get details and compared with Register programmed values values .

since CC1P is 0, OCREF should come as non inverted.