CODEWITHSUNDEEP
picpic18
Cheetaiean
Cheetaiean

Reputation: 941

PIC programming which bits are which in TRIS register

I am trying to understand PIC18 code in a format like TRISB &= 0b11100000. What is the order the individual RB pins appear in? i.e. is this register setting RB0-RB2 as input, or RB5-RB7 as input?

Upvotes: 2

Views: 136

Answers (2)

Rameau
Rameau

Reputation: 11

After using TRISB &= 0b11100000, RB5-RB7 will keep their state and RB0-RB4 will be cleared - set to outputs.

Usually clearing bits is done with TRISB &= ~(0b00011111) for 'clarity'

Upvotes: 1

Ali Safari
Ali Safari

Reputation: 1775

in the code TRISB &= 0b11100000, the binary value sets the direction of the lowest pins, RB0-RB2, as outputs, and the highest, RB5-RB7, as inputs.

Upvotes: 0

Related Questions