Hello last week , I was present at the french seminar of Microchip in Lyon. And Picos18 was introduce by a member of the company who have write picos18 Michel Mermin PHIDIAS 11, ch du Vieux Chjne ZIRST 38240 Meylan www.phidias-electronic.com Tel +33 (0)4 76 18 11 93 - Fax +33 (0)4 76 18 11 94 ----- Original Message ----- From: "Dan Devine" To: Sent: Monday, March 08, 2004 10:15 AM Subject: Re: [PIC]: Free RTOS for PIC18F8720? > I've been using PICOS18 and I really like it. I've used PICOS18 on the > 18F8720 for two projects now, good results with both. It took a little > time to learn the ropes and understand the kernel fully, but I was > coming to PICs cold. > > On my first project, I've gotten 6 simultaneous tasks in operation with > a message queue between for passing task information. I've incorporated > that with a 256 X 64 graphic LCD, Keypad, wireless module and 5 channels > of PWM along with regular I/O for machine control! The 18F8720 > kicks-#!$.... > > I've looked at the newest version just released (have not had time to > really code for it yet, as I'm in board layout now for another project) > and it has context switching with FULL 31 level stack save if you set it > that high, not stack segmentation (per MCHP app note) with a limit of > stack depth. This prevents one deep task from trashing the return > address stack for the neighboring task. I view that as a plus, although > for some high-speed applications, it adds to the context-switch time to > save the stack rather than simply move STKPTR. I think that Xavier > Montagne (the project maintainer/leader) wrote me that you can set your > depth to anywhere in between if you choose. > > > If you are interested, you can contact me here or offlist... I'll send > code too if you are interested as well. > > Dan Devine > > > On Mon, 2004-03-08 at 00:44, Thomas wrote: > > Hi everyone, > > I am looking for a free RTOS kernel for the > > PIC18F8720. I found one from www.freeRTOS.org and one > > from www.picos18.com. Are these any good? Is there > > any other one? I think the Salvo kernel is good > > (haven't try it yet), but unfortunately, it is not > > free. :-( > > Best regards, > > Thomas > > > > > > __________________________________ > > Do you Yahoo!? > > Yahoo! Search - Find what you re looking for faster > > http://search.yahoo.com > > > > -- > > http://www.piclist.com hint: The list server can filter out subtopics > > (like ads or off topics) for you. See http://www.piclist.com/#topics > > -- > http://www.piclist.com hint: The list server can filter out subtopics > (like ads or off topics) for you. See http://www.piclist.com/#topics > > -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics