State Z

[Kit]

if an IO pin of an IC required to be Z state for few cycles, how to do that.

Let's say PIN_B1 is connected to the IO　pin, what is the command to output the state Z?

output_high? output_low or output_float?

Thanks

[PCM programmer]

The PIC doesn't have an output enable control on its pins,
in the same way that a 74HCT245 bi-directional buffer chip has.
You can't completely disconnect a PIC pin from the internal
circuits inside the PIC.

So the next best thing is to make it into an input pin,
by using the output_float() function. Or use set_tris_x().
The pin will then be in a Hi-Z state, so it won't affect whatever
external circuits are connected to the pin. However, if the
pin is left floating (ie., it's not driven and there's no pull-up
or pull-down resistor), it could float right at the CMOS
switching point which could cause massive noise to be
amplified inside the PIC with unknown effect.

So, the short answer is: Use output_float()