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Re: [avr-gcc-list] light up and led
From: |
Joerg Wunsch |
Subject: |
Re: [avr-gcc-list] light up and led |
Date: |
Thu, 6 Oct 2005 21:59:53 +0200 (MET DST) |
Patrick Blanchard <address@hidden> wrote:
>> Yes, use a hardware timer. ;-) ...
>> Otherwise, have a look at the functions in <avr/delay.h>.
> FWIW using the delay.h made more sense for me; easier code to
> follow.
It eats up your CPU. Even if you don't have any other work for your
CPU while waiting, with a hardware timer, you could at least reduce
the overall power consumption by putting the CPU to sleep.
Sure, for really short delays, a spin-loop makes sense, but when
you want your LED to blink, just use it as a good example to get
acquainted with hardware timers (even though obviously, conserving
energy isn't the most important feature of a LED blinker ;-).
It's for some reason that even the very simple demo.c that accompanies
avr-libc uses a hardware timer.
--
cheers, J"org .-.-. --... ...-- -.. . DL8DTL
http://www.sax.de/~joerg/ NIC: JW11-RIPE
Never trust an operating system you don't have sources for. ;-)
- [avr-gcc-list] light up and led, Timothy Smith, 2005/10/06
- Re: [avr-gcc-list] light up and led, Bernard Fouché, 2005/10/06
- Re: [avr-gcc-list] light up and led, Joerg Wunsch, 2005/10/06
- Re: [avr-gcc-list] light up and led, Timothy Smith, 2005/10/06
- Re: [avr-gcc-list] light up and led, Vincent Trouilliez, 2005/10/06
- Re: [avr-gcc-list] light up and led, Joerg Wunsch, 2005/10/06
- Re: [avr-gcc-list] light up and led, Patrick Blanchard, 2005/10/06
- Re: [avr-gcc-list] light up and led,
Joerg Wunsch <=
- Re: [avr-gcc-list] light up and led, Timothy Smith, 2005/10/06
- Re: [avr-gcc-list] light up and led, Daniel Mayo, 2005/10/06
- Re: [avr-gcc-list] light up and led, Timothy Smith, 2005/10/06
- Re: [avr-gcc-list] light up and led, Patrick Blanchard, 2005/10/06
- Re: [avr-gcc-list] light up and led, Timothy Smith, 2005/10/06
- Re: [avr-gcc-list] light up and led, Patrick Blanchard, 2005/10/06
- Message not available
- Message not available
- Re: [avr-gcc-list] light up and led, Patrick Blanchard, 2005/10/07
- Re: [avr-gcc-list] light up and led, Joerg Wunsch, 2005/10/07
Re: [avr-gcc-list] light up and led, Timothy Smith, 2005/10/06