rtos for avr?
2005-03-09 by Luke.Wei
Dear all,
A few days ago , i read some document about rtos for avr. Is the
advantage of rtos?
I want to have a try of the embedded system, where can have to find
teach? Thanks.
LukeThread
rtos for avr?
Re: [AVR-Chat] rtos for avr?
2005-03-09 by Jim Wagner
Lots of good info at AvrFreaks.net in the "Academy" section, then the "Articles" section; check other areas in that site, also. Also check Avrbeginners.net. Jim n Wed, 09 Mar 2005 07:05:47 -0000 "Luke.Wei" <mrddt4todie@yahoo.com.tw> wrote: > > > Dear all, > A few days ago , i read some document > about rtos for avr. Is the > advantage of rtos? > > I want to have a try of the embedded system, where can > have to find > teach? Thanks. > > > Luke > > > > > > > > > > > > > Yahoo! Groups Sponsor > > > ADVERTISEMENT > > > > > > > > > > > > > Yahoo! Groups Links > > To visit your group on the web, go > to:http://groups.yahoo.com/group/AVR-Chat/ > To unsubscribe from this group, send an email > to:AVR-Chat-unsubscribe@yahoogroups.com > Your use of Yahoo! Groups is subject to the Yahoo! Terms > of Service. > > > > > > > > > > > --------------------------------------------------------------- The Think Different Store http://www.thinkdifferentstore.com/ For All Your Mac Gear ---------------------------------------------------------------
Re: [AVR-Chat] rtos for avr?
2005-03-09 by Dennis Kazar
Picked this up somewhere during exploration of RTOS for AVR. Dennis ----- Original Message -----
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From: "Jim Wagner" <jim_d_wagner@applelinks.net> To: <AVR-Chat@yahoogroups.com> Sent: Wednesday, March 09, 2005 10:12 AM Subject: Re: [AVR-Chat] rtos for avr? > > Lots of good info at AvrFreaks.net in the "Academy" > section, then the "Articles" section; check other areas in > that site, also. Also check Avrbeginners.net. > > Jim > > n Wed, 09 Mar 2005 07:05:47 -0000 > "Luke.Wei" <mrddt4todie@yahoo.com.tw> wrote: >> >> >> Dear all, >> A few days ago , i read some document >> about rtos for avr. Is the >> advantage of rtos? >> >> I want to have a try of the embedded system, where can >> have to find >> teach? Thanks. >> >> >> Luke >> >> >> >> >> >> >> >> >> >> >> >> >> Yahoo! Groups Sponsor >> >> >> ADVERTISEMENT >> >> >> >> >> >> >> >> >> >> >> >> >> Yahoo! Groups Links >> >> To visit your group on the web, go >> to:http://groups.yahoo.com/group/AVR-Chat/ >> To unsubscribe from this group, send an email >> to:AVR-Chat-unsubscribe@yahoogroups.com >> Your use of Yahoo! Groups is subject to the Yahoo! Terms >> of Service. >> >> >> >> >> >> >> >> >> >> >> > > --------------------------------------------------------------- > The Think Different Store > http://www.thinkdifferentstore.com/ > For All Your Mac Gear > --------------------------------------------------------------- > > > > Yahoo! Groups Links > > > > > > > >
Re: [AVR-Chat] rtos for avr?
2005-03-09 by Dennis Kazar
Might want to check this out. http://www.FreeRTOS.org Dennis
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----- Original Message ----- From: "Jim Wagner" <jim_d_wagner@applelinks.net> To: <AVR-Chat@yahoogroups.com> Sent: Wednesday, March 09, 2005 10:12 AM Subject: Re: [AVR-Chat] rtos for avr? > > Lots of good info at AvrFreaks.net in the "Academy" > section, then the "Articles" section; check other areas in > that site, also. Also check Avrbeginners.net. > > Jim > > n Wed, 09 Mar 2005 07:05:47 -0000 > "Luke.Wei" <mrddt4todie@yahoo.com.tw> wrote: >> >> >> Dear all, >> A few days ago , i read some document >> about rtos for avr. Is the >> advantage of rtos? >> >> I want to have a try of the embedded system, where can >> have to find >> teach? Thanks. >> >> >> Luke >> >> >> >> >> >> >> >> >> >> >> >> >> Yahoo! Groups Sponsor >> >> >> ADVERTISEMENT >> >> >> >> >> >> >> >> >> >> >> >> >> Yahoo! Groups Links >> >> To visit your group on the web, go >> to:http://groups.yahoo.com/group/AVR-Chat/ >> To unsubscribe from this group, send an email >> to:AVR-Chat-unsubscribe@yahoogroups.com >> Your use of Yahoo! Groups is subject to the Yahoo! Terms >> of Service. >> >> >> >> >> >> >> >> >> >> >> > > --------------------------------------------------------------- > The Think Different Store > http://www.thinkdifferentstore.com/ > For All Your Mac Gear > --------------------------------------------------------------- > > > > Yahoo! Groups Links > > > > > > > > -- No virus found in this outgoing message. Checked by AVG Anti-Virus. Version: 7.0.308 / Virus Database: 266.7.0 - Release Date: 3/8/2005
Re: rtos for avr?
2005-03-10 by Luke.Wei
--- In AVR-Chat@yahoogroups.com, "Dennis Kazar" <dkazar@s...> wrote:
> Might want to check this out. http://www.FreeRTOS.org
> Dennis
Dear all,
i will go find my answer. thanks a lot
LukeMil Std 1553
2005-03-17 by Jim White
Anybody know of a Mil Std. 1553 implementation on something like a M128? Looks like there are transceiver chips out there but you have to do the protocol in your software ?? Jim
Re: [AVR-Chat] Mil Std 1553
2005-03-17 by Jim Wagner
On Thu, 17 Mar 2005 17:45:39 -0500 wg0z@aol.com wrote: > To the best of my memeory, DDC makes a transceiver device > that will interface fairly > easily to most 16-bit or better microcontrollers. One site I found: http://www.interfacebus.com/Design_Connector_1553.html says this - The data code shall be Manchester II bi-phase level. A logic one shall be transmitted as a bipolar coded signal 1/0 (i.e., a positive pulse followed by a negative pulse). A logic zero shall be a bipolar coded signal 0/1 (i.e., a negative pulse followed by a positive pulse). A transition through zero occurs at the midpoint of each bit time.. The transmission bit rate on the bus shall be 1.0 megabit per second with a combined accuracy and long-term stability of ± 0.1 percent (i.e., ±1000 hertz (Hz)). You would be pretty hard pressed to bit-bang 1MBit/second in an AVR running 24MHz and converting manchester into a serial bit stream. Some sort of PLD implementation probably could do it. Didn't see any ICs right off. You would definitely need a transceiver though an RS422/485 transceiver could probably do it since it is balanced and does not have to be transformer coupled. The same web page lists some IC sources. Jim --------------------------------------------------------------- The Think Different Store http://www.thinkdifferentstore.com/ For All Your Mac Gear ---------------------------------------------------------------
Mil Std 1553
2005-03-17 by wg0z@aol.com
To the best of my memeory, DDC makes a transceiver device that will interface fairly
easily to most 16-bit or better microcontrollers.
Re: [AVR-Chat] Mil Std 1553
2005-03-17 by Mike Murphree
Jim White said: > > Anybody know of a Mil Std. 1553 implementation on something like a > M128? Looks like there are transceiver chips out there but you have to > do the protocol in your software ?? Jim, I seriously doubt anyone is doing this directly in a microcontroller (or any other processor for that matter). You can buy specialized chips to do it from a number of vendors, but they are usually expensive. I know that at least Actel has a soft IP core to put in an FPGA which has the advantage of providing radiation hardness too. And it would certainly be doable in VHDL or Verilog if you have the time to develop it yourself. Mike W4LNA