New approach to Rotary Encoder

[jefrem]

With use 4 mecanic rotary encoder with this code (pic18f4550) ?

[Ioannis]

I don't see why not. Its fast enough.

Ioannis

[Mike, K8LH]

A question, please? With the following "while" statement, does the program wait there until both encoder pins are high? If so, then you're only detecting one of every four AB transitions when moving continually in one direction, correct?

while (portb.0=0 or portb.1=0):pause 10:wend

[cncmachineguy]

Yes I think you are correct, this will only detect from 3 to 0 or 3 to 2. So it does not count in quadrature mode. It could be modified with a few more while loops to detect when it leaves the current state.

[Ioannis]

I think not since there is OR in the WHILE statement.

Ioannis

[Mike, K8LH]

I think not since there is OR in the WHILE statement.

But doesn't the OR mean that you're stuck in this loop while either A OR B is low? In other words, you can only get out of the loop when both A and B are high?

[Demon]

Yup, as long as one is LOW, it remains in the loop.

Robert