Can someone explain this code please? I'm learning micro

Question

2.50/5 (2 votes)

See more:

int main(void)
{
	DDRD=0B00000000;
	DDRB |=(1<<1);    
	DDRB &= ~(1<<0);  
	PORTB |=(1<<0);   
    while (1) {
		if((PINB&(1<<0))==0){
			while((PINB&(1<<0))==0);
			for(char i=0; i<8; i++){
				if((PIND&(1<<i))!=0)
					PORTB|=(1<<1);
				else
					PORTB &=~(1<<1);
			}
		}
    }
    _delay_ms(1);  
}

What I have tried:

I actually don't know what it does, need help please

Posted 23-Apr-21 3:47am

Julian Lambertin Gutierrez

Updated 23-Apr-21 6:21am

Add a Solution

Comments

Richard MacCutchan 23-Apr-21 9:49am

Try asking the person who wrote it.

Rick York 23-Apr-21 10:54am

You are learning micro what?

Rick York 23-Apr-21 11:59am

All of those shifts of 0 and 1 are ridiculous. Is it really so difficult to write 1 and 2? The shifts certainly don't add to readability.

KarstenK 23-Apr-21 14:30pm

maybe that is some codestyle for that programming.

3 solutions

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

CPallini · Answer 1 · 2021-04-23T04:56:00

Solution 2

You could start reading a tutorial on AVR registers. See, for instance AVR I/O Register Configuration - Tutorials[^].

Posted 23-Apr-21 4:56am

CPallini

Dave Kreskowiak · Answer 2 · 2021-04-23T06:21:00

Solution 3

This is a bunch of bit shifts, basically just changing numbers, but what does this actually mean to the hardware attached to the board? Only the person who wrote that code and put the hardware together will know.

Posted 23-Apr-21 6:21am

Dave Kreskowiak

OriginalGriff · Answer 3 · 2021-04-23T04:31:00

We are more than willing to help those that are stuck: but that doesn't mean that we are here to do it all for you! We can't do all the work, you are either getting paid for this, or it's part of your grades and it wouldn't be at all fair for us to do it all for you.

So we need you to do the work, and we will help you when you get stuck. That doesn't mean we will give you a step by step solution you can hand in!
Start by explaining where you are at the moment, and what the next step in the process is. Then tell us what you have tried to get that next step working, and what happened when you did.

If you are having problems getting started at all, then this may help: How to Write Code to Solve a Problem, A Beginner's Guide[^]