Search found 21 matches

by jcbarlow
Fri Jul 29, 2016 5:24 am
Forum: ChibiOS/RT
Topic: CW files
Replies: 32
Views: 7326

Re: CW files

louis wrote:No I debug through CodeWarrior.


But CW is just a slightly customised version of Eclipse isn't it?
by jcbarlow
Fri Sep 06, 2013 8:51 pm
Forum: ChibiOS/NIL
Topic: It's... alive!
Replies: 18
Views: 9099

Re: It's... alive!

Where Nil wins hands down is memory usage, both RAM and Flash. In future RT will be aimed at "normal" 32bits devices, Nil at 8/16bits devices and lesser 32bits one (there are now very small devices from ST, NXP etc that could use a memory-efficient RTOS). This is fun considering that RT i...
by jcbarlow
Thu Sep 05, 2013 5:55 pm
Forum: ChibiOS/NIL
Topic: It's... alive!
Replies: 18
Views: 9099

Re: It's... alive!

Giovanni,

In your abundant spare time :lol: could you please write up a little "executive summary" of the differences between RT and NIL in their current form (3.0).

Thanks,
Jeff
by jcbarlow
Thu Aug 29, 2013 5:42 am
Forum: General Support
Topic: Serial Driver and IO_TRANSMISSION_END Event
Replies: 6
Views: 2943

Re: Serial Driver and IO_TRANSMISSION_END Event

Don't the F4 USARTS have the hardware RS-485 driver enable feature like the F3 and F0?
by jcbarlow
Sat Aug 24, 2013 6:28 pm
Forum: General Support
Topic: Detecting RISING and FALLING edges on BOTH_EDGES interrupt
Replies: 18
Views: 11734

Re: Detecting RISING and FALLING edges on BOTH_EDGES interru

Hmmm... the bigger C1 is good. I'd try a bigger C2 and some inductors in series with R1 & R2. Even some big ferrite beads would help. It's usually easier to filter out noise than to cope with it in software.
by jcbarlow
Thu Aug 22, 2013 5:35 pm
Forum: General Support
Topic: Detecting RISING and FALLING edges on BOTH_EDGES interrupt
Replies: 18
Views: 11734

Re: Detecting RISING and FALLING edges on BOTH_EDGES interru

Looks to me like you are just seeing noise spikes on the AC power input. Try a really stiff low pass filter.
by jcbarlow
Sun May 12, 2013 9:05 pm
Forum: ChibiStudio
Topic: ChibiStudio preview 4
Replies: 14
Views: 6673

Re: ChibiStudio preview 4



I don't see anything there newer than 2012-12-22. Do I have to be logged in or something?
by jcbarlow
Fri Jan 18, 2013 12:39 am
Forum: Development and Feedback
Topic: STM32 MAC driver optimization
Replies: 57
Views: 18638

Re: STM32 MAC driver optimization

You might want to look at http://savannah.nongnu.org/task/?7896 and http://savannah.nongnu.org/patch/?7658
There seems to be some interest in that sort of tinkering.
by jcbarlow
Sun Jan 06, 2013 8:31 pm
Forum: Development and Feedback
Topic: STM32 MAC driver optimization
Replies: 57
Views: 18638

Re: STM32 MAC driver optimization

2) I want a simple, rational API that is not dictated by the lwIP way to see things. Giovanni Given that your stated goal is easing your support burden, you would do well to adhere closely to the lwIP code and interfaces, whether or not you find them "rational". Let the lwIP devs do their...
by jcbarlow
Sun Dec 23, 2012 9:17 pm
Forum: Development and Feedback
Topic: Query RTOS System States possible?
Replies: 6
Views: 2260

Re: Query RTOS System States possible?

My view is that ISR code should generally be as short and fast as practical. It should always be fully deterministic. Dynamic memory allocation invariably involves having to deal with the "out of memory" condition. I can perhaps imagine some peculiar cases where explicitly calling chPoolAl...

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