ATmega162 Startup Code

Jul 28, 2003 3 Replies
A

I have to write some code for an ATmega162, a processor that I have never used before.



As the code is of medium complexity, I intend to write it in C. The GCC compiler thus seems a good choice, as I have used it extensively with H8s.



Does anybody know of the existence of/ would be kind enough to supply a "shell project" that could be used with GCC? What I mean by that is an empty "main()", but with necessary interrupt vectors, stack initialisation etc. prior to the execution of main().



I am not going to get the luxury of an ICE, I believe, so it is just to try to avoid the heartache of getting off first base with an unfamiliar architecture, instruction set etc.



Thanks in advance if anyone can help.



Andy G.


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R

Andy,

Get yourself a copy of CodeVisionAVR from www.hpinfotech.ro . The full version isn't all that expensive (150 Euro = ~ $170), and it has support for your processor and almost all other AVR based products. It comes with a code generator wizard, where you select the options you want to use from your processor, and it will generate all startup code including skeleton interrupt service routines.

Rob

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J

int main(void) { for(;;); return 0; }

avr-gcc performs all such initialisation for you, by default. Assuming you are on windows, download the WinAVR distribution. It has some example "projects". Look on .

John Devereux
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A

Thanks, folks.

There seems to be plenty to keep me going at the AVR Freaks site.

Andy G.

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