I am developing a 8051 based digital voltage supply that uses an encoder (i.e. Bourns ECW1J-xxx) producing a 2-bit gray code (thru a A and B channel) to increment/decrement the voltage value. I finally got it to work, but the increment/decrement is sometimes unpredictable. Is there anbody with some experience with this type of interface? I would appreciate to get some tips.
At this moment I scans the encoder like scanning a keyboard.