How to read a nibble?

[eguti]

The code "value = input_x()" could read an entire Byte from 8 pins. But, how to read just 4 pins in the same way of the input_x() command?

I think is easy with input(PIN_X) command, but is there another way?

thank

[n-squared]

There is no way of reading a nibble DIRECTLY.
What you can do is input_x() and AND it with a mask:

[Ttelmah]

As an extra comment, look at the 'swap' function in CCS. This uses a single byte command to swap the high and low nibbles in a byte. Much more efficient than four rotations.

Best Wishes

[eguti]

Thanks Ttelmah and n-squared. I will try both tips.

bye