Declaring array of pins

 Declaring array of pins

How to declare an array of pins?
I tried the following approach.

sbit pins[2]={0x80,0x81}

I need to declare them in an array because I have to make multiple changes to pins in my project. My code will become very bulky if I use one variable for one pin. Is there a way out?

 RE: Declaring array of pins

Your processor can't index bit variables.

Making multiple changes to pins at the same time can sometimes be done by using and/or operations on the container byte for a 8-pin port.

 RE: Your processor can't index bit variables.

Your processor also can't index SFRs - which means that you also can't have arrays of SFRs, or pointers to SFRs.

You can access the individual pins of a port as sbits;
You can also access the complete 8-bit port SFR as a byte; but only direct accesses - no indexing/arrays.

For details of the capabilities (and limitations) of the 8051 architecture, you need to study the so-called "bible" for the 8051:

See: http://www.8052.com/faqs/120112 for the links to the so-called "bible" for the 8051.

See also: http://www.8052.com/tutorial for basic 8051 architecture tutorials.

 RE: Declaring array of pins

Or you can make a function that does what you need and call that over and over.