Subject:
|
Re: BrickOS Patches and Development
|
Newsgroups:
|
lugnet.robotics.rcx.legos
|
Date:
|
Tue, 15 Jun 2010 07:35:44 GMT
|
Viewed:
|
33203 times
|
| |
|
|
In lugnet.robotics.rcx.legos, Carl Troein wrote:
> Another thing: We should have a good asm implementation of the Power
> Functions protocol. I've ordered the Emerald Night collection so soon
> I'll have some power functions parts and a reason to control them
> with BrickOS. Hopefully that will lead to something.
I've recently mucked about with the Power Functions protocol, and got a proof of
concept running on the RCX using brickOS. The main problem is that it's quite
timing sensitive, so this code only worked reliably with interrupts disabled
(looking at the oscilloscope).
The sample code is at http://www.algonet.se/~yann/powerfunctions.c
The timing requirements are probably more lax in reality (PF protocol spec cites
ranges like 316-526us for a 0 bit), but my code was thrown off by whole periods
(of the 38kHz modulation signal) as other interrupts occurred.
|
|
Message has 1 Reply:
 | | Re: BrickOS Patches and Development
|
| Hello Yann, 2010/6/15 Yann Vernier <yann@algonet.se>: (...) I really would prefer to see the interrupt code running to disabling all interrupts for several milliseconds, loosing several ticks and disabling all sensors during this time. Did you apply (...) (14 years ago, 15-Jun-10, to lugnet.robotics.rcx.legos)
|
Message is in Reply To:
| | Re: BrickOS Patches and Development
|
| (...) Case in point: when I first started on this post some weeks(!) ago, hoenicke.ath.cx wasn't responding. (...) And it's not getting easier if we've collected different sets of patches and then make further changes based on those... So yeah, we (...) (16 years ago, 31-Mar-09, to lugnet.robotics.rcx.legos)
|
29 Messages in This Thread:
 
 
- Entire Thread on One Page:
- Nested:
All | Brief | Compact | Dots
Linear:
All | Brief | Compact
This Message and its Replies on One Page:
- Nested:
All | Brief | Compact | Dots
Linear:
All | Brief | Compact
|
|
|
|
