Timer as Counter

[muralij21]

Posted on December 03, 2010 at 11:49

Timer as Counter

[dsystem]

Posted on May 17, 2011 at 14:17

Dear Karakaya

Can you give me code for counting from CH1?

Regards

[madhu13]

Posted on May 17, 2011 at 14:17

''dont waste your time counting pulses at ETR pin

 

 

no matter what I tried I couldnot count ETR pulses - ( there is probably a bug in hardware )

 

try to count pulses at CH1 of the timer - it works''

there is no bug in hardware, TIM_CH1 and TIM_ETR share the same pin, by default TIM_CH1(i.e. PA0) is mapped to the pin, if you want to use TIM_ETR(i.e.PA15) pin remap the pin by programming AF remap and debug I/O configuration register (AFIO_MAPR) TIM2_REMAP(bits 9 & 8) then your code will work

[madhu13]

Posted on May 17, 2011 at 14:17

karakaya.mehmet, u can use TIM2_ETR pin to count pulses by using the remap, and u can not count pulse using TIM3_ETR

[mehmet.karakaya]

Posted on May 17, 2011 at 14:17

hello ,

I tried to count ETR pulses of TIM3

which is conected to PD2 - it didnot count - I insist that there is hardware bug

in the manual it ''doesnot'' say that TIM3_ETR and TIM3_CH1 share the same pin

can you please write the code here which couns TIM3_ETR pulses ?