how to transmit the CNT in interrupt upon encoder interface mode

[wu hui]

Posted on August 29, 2017 at 11:32

hello:

i use the encoder in encoder interface mode of TIMER,it can read the CNT of TIM4  correctly in main ,but this is not my target. i want to get the CNT when the TIMER count up or count down, so it must in a interrupt.

so i enable the capture/compare mode of TIM4,but in the capture callbak function,the printed CNT is wrong。the wrong; the correct。 

now how can i transmit the CNT in interrupt upon encoder interface mode,i think the capture/compare mode is a wrong way.

Look forward to your reply

[Tesla DeLorean]

Posted on August 29, 2017 at 11:44

Do you read the CCRx for the channel you are capturing? 

[wu hui]

Posted on August 29, 2017 at 12:04

Actually，if i look for the CNT in main function ,it is correct。but it is wrong in capture interrupt。so i think Whether it can not transmit in that interrupt。

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