How do I use a for loop?

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New to AVR assembly programing language and using Atmel Studio 7. I've done other assignments which they are very simple and easy to complete but I have no idea where to start using arrays and for loops.

Write a program using a FOR loop type to find and count the number of elements within the following array that are > 50 and < 80
array:
75 71 127 96 77 32 53 11 58 82 25 94 54 66 118 111
122 25 64 61 126 87 125 57 96 101 92 52 7 59 112 33

What I have tried:

Don't have any code. I've been looking at examples and notes to try and complete this assignment.

Posted 23-Sep-20 5:03am

imrolis

Updated 23-Sep-20 6:04am

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Richard MacCutchan 23-Sep-20 11:23am

Get a book on the language you are trying to use, and study it in detail.

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Richard MacCutchan · Accepted Answer · 2020-09-23T05:24:00

Solution 1

There is even an online reference: Beginner's introduction to AVR assembler language[^].

Posted 23-Sep-20 5:24am

Richard MacCutchan

OriginalGriff · Accepted Answer · 2020-09-23T06:04:00

It's pretty simple: so simple I'm not giving you any code!

Think about a for loop:

C++

for (a ; d ; c)
  b;

a is the intialiazer: set a register to the number of elements in the array. Hint: ldi, anyone?

b is the body of code inside the loop. Hint: you will want a label before this.

c is the "move on to next value" code. Hint: is dec a month, or something else?

d is the test and branch if not complete. Hint: brne ring any bells?

Give it a try: this is not a complicated homework task!