Timer1 External Clk source mode2

Posted on September 09, 2009 at 19:29

This topic has been closed for replies.

Visitor II

Posted on May 17, 2011 at 15:04

Has any one had problems with external input clock mode2 ?

I am attempting to count pulses thru TIM_ETR with no luck.

I have followed the suggested procedure exactly i.e. set ECE in TIM1_ETR

and CEN in TIM1_CR1.

The exact micro is the STM8S207C8T6.

The timer runs ok when internal clock selected and I can see from trial sofware that the pulses are going to PB3/pin19.

The frequency is easily less than master/4

Any one else had any issues or solutions?

Visitor II

Posted on May 17, 2011 at 15:04

Hi,

have you got a look on page 149 of RM0016?

I think you have to configure SMS bits accordingly.

coluber

Visitor II

Posted on March 17, 2013 at 11:06

Hi,

Where I can read about maximum external clock frequency of stm8s's timers?

Whether it might be more than maximum cpu clock frequency?

Thanks

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