Timer sync

[John Hite]

Posted on March 24, 2017 at 17:44

In RM0090 section 18.3.15 Timer synchronization all the master/slave examples use timers 1 and 2. Can only adjacent timers be used in master/slave modes, must the lower number be the master? I don't see where the coupled timer is specified.

Thanks,

jh

[waclawek.jan]

Posted on March 25, 2017 at 00:28

No, this has nothing to do with the timers numbers. There's a table in the TIMx_SMCR register description in the timer chapters in RMs. I've made a document back then summing up this and other timer features for the original F4xx (www.efton.sk/STM32/STM32F4xx%20misc.pdf , page 3 ), should be good for F2xx and roughly good for other F4/F7 where it needs to be rechecked. In some families' RMs there is a 'what connects to what' chapter containing not only timers' connections.

JW