STM32F4 Input Capture TIM2 Channel 4

[oli]

Posted on August 21, 2015 at 14:02

Hello

I'm faced to the Problem that I do have to use TIM2 channel 4 for Input capture. I know that channel 4 can not be used like 1 to 3. But I thaught I can use the channel 4 to get edges and take CCR4 as counter to take its value each time I detect an positive edge. I get an IRQ each time a positive edge occurres but CCR4 doesn't count up. To compare the behaviour I'm using TIM3 channel 1 where it works well with the same configuration (of course TIMx is different) as simple input capture. Does anyone know where the difference can be? Thanks #stm32

[Tesla DeLorean]

Posted on August 21, 2015 at 16:49

It should latch the current counter value, but it doesn't intrinsically ''count''. Determine why the counter isn't advancing.

I can't deduce what you're doing wrong with the details you've provided.