Hi,
what is the type and size of var?
What error you are geting?
On 4/22/06, [EMAIL PROTECTED] [EMAIL PROTECTED]
wrote:Hiyas,How can I use the PORTB constant with variables? eg:
while (1) {var = 1;PORTB = var}That is what I'm trying to acheive.I'd like to be able to do it with variableslike I
* [EMAIL PROTECTED] [EMAIL PROTECTED] [2006-04-22 08:09]:
How can I use the PORTB constant with variables? eg:
while (1) {
var = 1;
PORTB = var
}
This will work. But after seven iterations (if var is (u)int8_t), var
will be 0.
That is what I'm trying to acheive. I'd like to be able to
On Sat, 22 Apr 2006 08:30:33 +0200
Lars Noschinski [EMAIL PROTECTED] wrote:
* [EMAIL PROTECTED] [EMAIL PROTECTED] [2006-04-22 08:09]:
How can I use the PORTB constant with variables? eg:
while (1) {
var = 1;
PORTB = var
}
This will work. But after seven iterations (if var is
On Sat, Apr 22, 2006 at 07:29:10PM +1000, [EMAIL PROTECTED] wrote:
This example doesn't, and I don't know why... I know it's specific
to C, so that's why I'm asking here...
When asking a question like this, it would be useful for you to
describe exactly what you are seeing and what you
I am new to C by the way, if it isn't evident already (:
You might want to do some reading then.
Try
http://users.rcn.com/rneswold/avr/avr-tools.pdf
and
http://download.savannah.gnu.org/releases/avr-libc/avr-libc-user-manual-1.4.4.pdf
Also good are many of the documents from Atmel:
[EMAIL PROTECTED] wrote:
This doesn't work as expected... not sure why. I would like to keep the
functions if possible, I'm thinking it has something to do with scope
perhaps? I am new to C by the way, if it isn't evident already (:
It has nothing to do with scope. It has more to do with
On Apr 22, 2006, at 2:29 AM, [EMAIL PROTECTED] wrote:
On Sat, 22 Apr 2006 08:30:33 +0200
Lars Noschinski [EMAIL PROTECTED] wrote:
* [EMAIL PROTECTED] [EMAIL PROTECTED]
[2006-04-22 08:09]:
How can I use the PORTB constant with variables? eg:
while (1) {
var = 1;
PORTB = var
}
This
On Apr 22, 2006, at 9:20 AM, Matthew MacClary wrote:
Here is how I would implement your program. I apologize in advance
since I don't have a board available to try the code on. I hope that
the main ideas are apparent, even if I didn't squash all the bugs.
Here's a version of Matthew's
void change() {
var = 1;
}
That's a shift, not a rotation, so var is going to become 0.
while (1) {
int var=1;
while (var != 0) {
PORTB = var;
var = 1;
}
}
Also, 'int var' is going to be 16 bits wide, so in this version which
rotates the bit it's going to
Hiyas,
How can I use the PORTB constant with variables? eg:
while (1) {
var = 1;
PORTB = var
}
That is what I'm trying to acheive. I'd like to be able to do it with variables
like I do above, but it doesn't seem to work. Once I replace var with an
actual number, it works as expected.
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