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Re: [avr-gcc-list] compiler not generating IO

From: Joerg Wunsch
Subject: Re: [avr-gcc-list] compiler not generating IO
Date: Fri, 27 Jan 2006 07:14:18 +0100 (MET)

"Royce Pereira" <address@hidden> wrote:

> Or maybe you need to calibrate your internal RC oscillator (modify
> the value in OSCCAL) as sometimes, Ive found, the RC oscillator is
> out by as much as 25%

It is supposed to be pre-calibrated for 1 MHz at room temperature and
Vcc = 5 V (for most devices, anyway).  The accuracy is enough for
running an RS-232 from it, for all practical purposes, so:

>> I get bursts of garbage so I'm sure it would work with a crystal

unless the OP's operating conditions are different than 5 V and room
temperature, I'd still suspect another problem.

cheers, J"org               .-.-.   --... ...--   -.. .  DL8DTL

http://www.sax.de/~joerg/                        NIC: JW11-RIPE
Never trust an operating system you don't have sources for. ;-)

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