sanddune008
New Member
Thanks all for your time......
Not a bad idea.....but how do i proceed with the interfacing multiple trigger pulse source to the 74HC175.
What will be the input to the flip flop data pin?. And also identifing the input source at the multiplexer is a grey area?
hope current loop 4-20ma will help me get that pulse over long distance.
I didn't understand this part.
Thanks all once again........
I'm thinking six edge-triggered flip-flops (like the 74HC175) to capture and store an edge event. Present the output of the flip-flops to your I/O pins directly, or follow with a multiplexer so that you can identify and route the stored event into one of 3 interrupts.
Not a bad idea.....but how do i proceed with the interfacing multiple trigger pulse source to the 74HC175.
What will be the input to the flip flop data pin?. And also identifing the input source at the multiplexer is a grey area?
hope current loop 4-20ma will help me get that pulse over long distance.
davidbeardavidbear said:You might try putting a 555 timer used as a "one shot" on each button so that the PIC will see the initial signal as an interrupt, and then have enough time to poll which timer is still high.
I didn't understand this part.
Thanks all once again........
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