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and without PIC ???
I remember we did that with a 4069 hex inverter ... some centuries ago.
The trick is to trigger a simple monostable through a basic diode AND Gate on the rising edge ... and also the falling edge.
How ???
an inverted falling edge is a leading edge ... no more.
That's not a "true" freq. doubler ... but it doubles the Pulse count !!!
Alain
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Why insist on using 32 Bits when you're not even able to deal with the first 8 ones ??? ehhhhhh ...
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IF there is the word "Problem" in your question ...
certainly the answer is " RTFM " or " RTFDataSheet " !!!
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