Time Interval In STM32

[titanif]

I want to set the Timer/Counter of STM32 as such that it(timer) should START by the external trigger on one GPIO pin and should STOP by another GPIO pin of the STM32. After stop I want to have the value of counter OR the time elapsed from START pulse to STOP pulse. Basically I have two pulse signal and I want to measure the delay between them using only STM32.
Any help would be appreciated.

 

[rjenkinsgb]

I'm not familiar with that specific device family, however it appears to have an "Input capture" facility.

You can leave the associated timer free-running at a suitable frequency, then configure two input capture units to the two input pins & the appropriate high or low going edges.

Wait until the second it triggered & subtract the value from the first capture reg, from the second one, to get the interval in timer units.

More info:

Working with STM32 and timers: Input Capture Mode. – EmbeddedExpertIO

 

[tepalia02]

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