In SX Microcontrollers, SX/B Compiler and SX-Key Tool, robotworkshop wrote:

Your right about the since it is checking bit 3 for a change.  It shouldn't be checking that bit.  It should be checking 1 as in the example encoder application.  The problem is that the program as written isn't consistent about bit locations.  I guess another way to to it (if the encoders are wired to RA.0 and RA.1 would be to do something like this at the beginning:

EncodersNew = EncodersNew << 2 ' Shift over to perform all calculations 
EncodersNew = EncPort & &00001100 ' Mask off extra bits

There are a lot of ways to do it but it just needs to be consistent throughout the code.

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