- From: Ian Abbott <abbotti_at_mev.co.uk>
- Date: Thu, 02 Mar 2006 15:01:52 +0000
On 01/03/2006 11:25, Panagiotis Vartholomeos wrote: > I will attempt to program the output of the device > based solely on instructions. > > I need to generate PWM signals, with varying duty cycle, > but I am not sure if PWM can be accomplished using instructions only. > > Has anyone done this in the past? Timing is the difficult part. If you have an RTAI or RTLinux/GNU enabled kernel, you might be able to do it using the 'comedi_rt_timer' driver, but in the words of the provided documentation: | Since the timing is all done in software, sampling jitter is much | higher than with a device that has an on-board timer, and maximum | sample rate is much lower. -- -=( Ian Abbott _at_ MEV Ltd. E-mail: <abbotti_at_mev.co.uk> )=- -=( Tel: +44 (0)161 477 1898 FAX: +44 (0)161 718 3587 )=-
Received on 2006-03-02Z15:01:52