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Synchronize Micros with independent clocks

Question asked by Andrew C on Jan 31, 2017
Latest reply on Jan 31, 2017 by waclawek.jan

I want to synchronize micros that each have their own clock. Is that possible? I was thinking of having a Master control the synchronization with GPIO. Essentially, when the pin is high (or low), you start whatever you want and since I told them to start at the same time.  In my case, I want to output digital pulse trains from each slave micro, but with "accurate" timing between the two (I am talking 10 ms timing). My only worry is that the different clocks do not fall and rise at the same time, but since those clocks are in the Mhz, it is way above the magnitude of the timing I actually need. I guess if I start the process with the GPIO and make the rise and fall times controlled by software delays, that would work? Does that sound feasible or stupid?  Sorry if this sounds all over the place....

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