AVR-Chat

Hi all!

  I'm just looking for some stand-alone USB controller to work with 
my AVR. I found SL811HS from Cypress and it seems pretty simple to 
wire-up but I found little information on configuring, protocols 
etc. Does anybody have some experience with this (some other) chip?
How do I communicate with USB devices in windows? Are there some API 
functions? Any help appreciated!

Thanx in advance

Tomek

Tomek wrote:

> Hi all!
>
>   I'm just looking for some stand-alone USB controller to work with
> my AVR. I found SL811HS from Cypress and it seems pretty simple to
> wire-up but I found little information on configuring, protocols
> etc. Does anybody have some experience with this (some other) chip?
> How do I communicate with USB devices in windows? Are there some API
> functions? Any help appreciated!
>
> Thanx in advance
>
> Tomek


ftdi  chips, usb to rs232
http://www.ftdichip.com/
cheap easy to use
In windows / linux or mac just acts as a com port.

Alex

Dingo wrote:

ftdi  chips, usb to rs232
http://www.ftdichip.com/
cheap easy to use
In windows / linux or mac just acts as a com port.

Alex

> Pity they don't have prices on their site.
>  
> Here is an Australian distributor who sells them for for around US$40
>  
> http://www.dontronics.com/usb_232.html
>  
> Nigel

I was talking about the chips not the adaptors.

Cheapest for the chips is www.kitsrus.com  if your buying a few.
Also good for cheap lcds , sensors(temp, humidity, pressure) and zif 
sockets.
http://www.kitsrus.com/bits.html

Alex

Linx technologies (www.linx also make a chip (~$15 from digikey) that
does ez usb interface... The webpage is: 
http://www.linxtechnologies.com/interface.php?section=products&category=
interface_modules&subcategory=qs_series

I have not used it yet (ordered one that should arrive tomorrow), but
all of their other products have been very simple to impliment and use.
Daniel

> 
> > Pity they don't have prices on their site.
> >  
> > Here is an Australian distributor who sells them for for 
> around US$40
> >  
> > http://www.dontronics.com/usb_232.html
> >  
> > Nigel
> 
> I was talking about the chips not the adaptors.
> 
> Cheapest for the chips is www.kitsrus.com  if your buying a 
> few. Also good for cheap lcds , sensors(temp, humidity, 
> pressure) and zif 
> sockets.
> http://www.kitsrus.com/bits.html
> 
> Alex

Piece of cake, and the Linx part has the FTDI part (and all the glue
stuff) inside. All you need is the Linx module and a connector. Hook up
Tx data & Rx data and you're in business.

> -----Original Message-----
> From: Daniel Boyer [mailto:dpboyer@dpicts.com] 
> Sent: Monday, September 27, 2004 12:40 PM
> To: AVR-Chat@yahoogroups.com
> Subject: RE: [AVR-Chat] USB controller wanted
> 
> 
> Linx technologies (www.linx also make a chip (~$15 from 
> digikey) that does ez usb interface... The webpage is: 
> http://www.linxtechnologies.com/interface.php?section=products
> &category=
> interface_modules&subcategory=qs_series
> 
> I have not used it yet (ordered one that should arrive 
> tomorrow), but all of their other products have been very 
> simple to impliment and use. Daniel
> 
> > 
> > > Pity they don't have prices on their site.
> > >  
> > > Here is an Australian distributor who sells them for for
> > around US$40
> > >  
> > > http://www.dontronics.com/usb_232.html
> > >  
> > > Nigel
> > 
> > I was talking about the chips not the adaptors.
> > 
> > Cheapest for the chips is www.kitsrus.com  if your buying a
> > few. Also good for cheap lcds , sensors(temp, humidity, 
> > pressure) and zif 
> > sockets.
> > http://www.kitsrus.com/bits.html
> > 
> > Alex
> 
> 
> 
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>

THANK YOU GUYS!

   I checked parts that you suggested but what I want to do is to 
use the full bandwidth of USB. The chips you proposed are actually 
emulating USB, LINX is good but 3MBit is far too slow for me.
I was thinking rather of 12MBit (Full-speed USB), if I want to send 
data form my device to PC in real time I need fast transmission 
without any proxy overhead. It is still question to me how do I 
communicate with USB devices under windows? I was browsing 
Microsoft's MSDN library but found no API functions for this. I read 
that there are no universal api functions as there is no strict 
classification of USB devices for whom the functions could have been 
written (except HID device).
So it looks like I have to write my own driver for my device or buy 
ready-made modules you mentioned before.
I would be thankful for any suggestions or hints as this topic is 
very interesting to me.
Thanks in advance
Tomek

Tomek,

if you want full bandwidth use the FTDI 245 chipset, this outputs data in
parallel rather than serial,
I used this for a project (www.waveterm.com) and it works a treat.. but it
can really hammer the AVR when its in full flight!

Paul


----- Original Message -----

From: "Tomek" <atel@kr.onet.pl>
To: <AVR-Chat@yahoogroups.com>
Sent: Wednesday, September 29, 2004 10:30 PM
Subject: [AVR-Chat] Re: USB controller wanted


> THANK YOU GUYS!
>
>    I checked parts that you suggested but what I want to do is to
> use the full bandwidth of USB. The chips you proposed are actually
> emulating USB, LINX is good but 3MBit is far too slow for me.
> I was thinking rather of 12MBit (Full-speed USB), if I want to send
> data form my device to PC in real time I need fast transmission
> without any proxy overhead. It is still question to me how do I
> communicate with USB devices under windows? I was browsing
> Microsoft's MSDN library but found no API functions for this. I read
> that there are no universal api functions as there is no strict
> classification of USB devices for whom the functions could have been
> written (except HID device).
> So it looks like I have to write my own driver for my device or buy
> ready-made modules you mentioned before.
> I would be thankful for any suggestions or hints as this topic is
> very interesting to me.
> Thanks in advance
> Tomek
>
>
>
>
>
> Yahoo! Groups Links
>
>
>
>
>
>

--- In AVR-Chat@yahoogroups.com, "Tomek" <atel@k...> wrote:

Tomek

I recommend for you the PDIUSBD12 from Philips.
And use the program D12Test.exe by PHILIPS (used only for tests).

Edson




> Hi all!
> 
>   I'm just looking for some stand-alone USB controller to work with 
> my AVR. I found SL811HS from Cypress and it seems pretty simple to 
> wire-up but I found little information on configuring, protocols 
> etc. Does anybody have some experience with this (some other) chip?
> How do I communicate with USB devices in windows? Are there some 
API 

> functions? Any help appreciated!
> 
> Thanx in advance
> 
> Tomek

Hi, 
 
I am authorized Atmel  re-seller
 
Anyone interested ?
 
50 pc  min.        ATMega8-16AI            US$1.3      04+ date code
100 pc              US$1.28
500 pc              US$1.25
2,000 pc           US$1.2
8,000 pc           US$1.1
 
Thanks !
 
Jo Zeng
joe@baite.com.hk
Tel: 852-2951-5933
Tel:  852-9159-8489
 
 
 
 


Alex Gibson <alxx@tpg.com.au> wrote:
Tomek wrote:

> Hi all!
>
>   I'm just looking for some stand-alone USB controller to work with
> my AVR. I found SL811HS from Cypress and it seems pretty simple to
> wire-up but I found little information on configuring, protocols
> etc. Does anybody have some experience with this (some other) chip?
> How do I communicate with USB devices in windows? Are there some API
> functions? Any help appreciated!
>
> Thanx in advance
>
> Tomek


ftdi  chips, usb to rs232
http://www.ftdichip.com/
cheap easy to use
In windows / linux or mac just acts as a com port.

Alex

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--- In AVR-Chat@yahoogroups.com, Joe Tsang <ic_source_joe@y...> wrote:
 
> I am authorized Atmel re-seller
> Anyone interested ? ...

Jo, I sent you an e-mail off the group about this on Friday, but here 
we are on Wednesday and I've not received a reply. Are you checking 
your e-mail regularly?

Graham.

--- In AVR-Chat@yahoogroups.com, Joe Tsang <ic_source_joe@y...> wrote:

> I am authorized Atmel re-seller
> Anyone interested ?
> [for example prices, see Joe's post]

In case anyone in this group is thinking of ordering MCUs from Joe, I 
will report on my experience.

Joe is associated with Baite Group, an authorized Atmel distributor 
in Hong Kong. I ordered about seventy MCUs from him of various 
kinds.  His prices are definitely cheap compared to, say, Digi-Key, 
in quantities from 10 to 50. I paid him with PayPal from my account 
balance. Unless he upgrades to a business or premium account, he will 
not be able to accept credit card payments unless PayPal have changed 
their policy since I last checked.

Joe shipped the MCUs on Wednesday (it was already Thursday for him) 
by Express Mail Service (EMS) and sent me the tracking number.  I 
tracked them to my local post office on the USPS Web site and they 
were delivered to my door today, Saturday.

The MCUs are all this year's date code and industrial grade.  The 
surface mount parts came in a tray, the DIP parts in individual 
plastic compartments joined end-to-end. They were accompanied by a 
proper Baite Group invoice. The customs declaration was properly 
filled out, including the HS Tariff number. I did not have to pay 
duty.

So, it seems to me that if you want to take advantage of Joe's low 
prices, it is safe to do so.  Here are some tips:

1 - Joe is not always in a position to reply to e-mail promptly as he 
has to travel for work. Also, he seems to want to quote your order 
rather than fix prices, minimum quantity, etc. in advance. What this 
means is that you should allow plently of time and not expect to 
close a deal with Joe as quickly as you can turn around a Digi-Key 
order.

2 - Give Joe your telephone number so that he can put it on the 
shipping forms. If there is any problem when the stuff gets to the 
US, the post office can call you.

3 - If, when you go to pay, Joe still has a personal PayPal account, 
you may not be able to pay from a credit card. You can check with 
PayPal to be sure, but I think Joe would have to upgrade to receive 
your payment. Then Joe would have to pay fees to PayPal (as I do - 
it's not too bad). If you can pay from your PayPal account balance, 
Joe can receive the payment even in a personal account.

In summary, Joe is above board and ready to give you a deal on Atmel 
MCUs.

Graham.

Were any of the parts Atmega168? Having a big problem since they have just 
been released, especially in DIP to use in STK500. Dealing with both Rep and 
Disty.
D
----- Original Message ----- 

From: "Graham Davies" <YahooGroups@ecrostech.com>
To: <AVR-Chat@yahoogroups.com>
Sent: Saturday, December 11, 2004 8:01 PM
Subject: [AVR-Chat] Re: Cheap ATMega8-16AI ... report on successful purchase


>
>
> --- In AVR-Chat@yahoogroups.com, Joe Tsang <ic_source_joe@y...> wrote:
>
>> I am authorized Atmel re-seller
>> Anyone interested ?
>> [for example prices, see Joe's post]
>
> In case anyone in this group is thinking of ordering MCUs from Joe, I
> will report on my experience.
>
> Joe is associated with Baite Group, an authorized Atmel distributor
> in Hong Kong. I ordered about seventy MCUs from him of various
> kinds.  His prices are definitely cheap compared to, say, Digi-Key,
> in quantities from 10 to 50. I paid him with PayPal from my account
> balance. Unless he upgrades to a business or premium account, he will
> not be able to accept credit card payments unless PayPal have changed
> their policy since I last checked.
>
> Joe shipped the MCUs on Wednesday (it was already Thursday for him)
> by Express Mail Service (EMS) and sent me the tracking number.  I
> tracked them to my local post office on the USPS Web site and they
> were delivered to my door today, Saturday.
>
> The MCUs are all this year's date code and industrial grade.  The
> surface mount parts came in a tray, the DIP parts in individual
> plastic compartments joined end-to-end. They were accompanied by a
> proper Baite Group invoice. The customs declaration was properly
> filled out, including the HS Tariff number. I did not have to pay
> duty.
>
> So, it seems to me that if you want to take advantage of Joe's low
> prices, it is safe to do so.  Here are some tips:
>
> 1 - Joe is not always in a position to reply to e-mail promptly as he
> has to travel for work. Also, he seems to want to quote your order
> rather than fix prices, minimum quantity, etc. in advance. What this
> means is that you should allow plently of time and not expect to
> close a deal with Joe as quickly as you can turn around a Digi-Key
> order.
>
> 2 - Give Joe your telephone number so that he can put it on the
> shipping forms. If there is any problem when the stuff gets to the
> US, the post office can call you.
>
> 3 - If, when you go to pay, Joe still has a personal PayPal account,
> you may not be able to pay from a credit card. You can check with
> PayPal to be sure, but I think Joe would have to upgrade to receive
> your payment. Then Joe would have to pay fees to PayPal (as I do -
> it's not too bad). If you can pay from your PayPal account balance,
> Joe can receive the payment even in a personal account.
>
> In summary, Joe is above board and ready to give you a deal on Atmel
> MCUs.
>
> Graham.
>
>
>
>
>
>
>
>
> Yahoo! Groups Links
>
>
>
>
>
>
>
>

hello...

i am starting to use ATMEGA128 right now..but i am a bit confused what /PEN pin is for??? how do use it???

do i just connect /PEN pin to 4K7 resistor and VCC???

please give same clues...

thank you

Yahoo! Messenger - Communicate instantly..."Ping" your friends today! Download Messenger Now

At 09:56 PM 12/11/2004, Ridho Alpha wrote:

>hello...
>
>i am starting to use ATMEGA128 right now..but i am a bit confused what 
>/PEN pin is for??? how do use it???
>
>do i just connect /PEN pin to 4K7 resistor and VCC???

See the Datasheet!

/Program ENable   Enables programming when low.
Tying it high would maybe be a mistake, maybe not.

If you are using SPI programming mode you shoud tie this pin to the 
ground. When /PEN is low, chip will enter SPI programming mode 
during reset. /PEN has no function during normal operation.

Although I'm using JTAG programming mode, I'm keeping /PEN tied to 
Vcc anyways, via 10K resisitor.

-- D.G.

Yahoo! Messenger - Communicate instantly..."Ping" your friends today! Download Messenger Now

> PEN stand for Parallel Programming Enable if you're not going to 

Well, Atmel doc2467.pdf, Page 7, says the following:
--(citation)
PEN is a programming enable pin for the SPI Serial Programming
mode. By holding this pin low during a Power-on Reset, the device 
will enter the SPI Serial Programming mode. PEN has no function 
during normal operation.
--(end of citation)

Now, to whom we are suppose to believe? Personally, I prefer Atmel. 
Therefore, PEN does not stand for Parallel Programming Enable.


> FORGET ABOUT IT! Tie it high and don't listen to what the
> others say.
That assumes that you, too, belong to "others". Right? 
I'm reacting to this childish thing, because to all my attempts to 
help other people, there is always someone who is trying to 
oversmart others not by facts, numbers or engineering knowledge, but 
rather by plain-vanilla insulting, which generally pisses me off!
I'm sure you'll be offended by my reaction, so, while you are 
preparing poisonus answer, think and let me know what are you 
actually trying to accomplish? Are you trying to help the originator 
of this thread? I'm sure it is not your attempt to promote 
your "150.000 pieces of product running all around the globe"!? Or 
it is? What we are suppose to do: perhaps, to spread away deadly 
scared, because you, the behemot of Atmel-based product, are walking 
thru this usergroup?

> I know for a fact that it works when its high. our production 
numbers speaks its own language.
Nice. What language is that? Even if it's true, who cares (except 
you)? I might care if you offer me pre-IPO shares!!!
Sounds like, 'cause your production numbers speaks its own language, 
only you are right while everybody else are wrong, without any other 
proofs, only by power of your own words (?).

-- D.G.

Thanks Graham for such detailed report !!
 
I am just a simple Atmel IC salesperson (from an authorized
Atmel reseller) that sells genuine Atmel parts in hopefully
reasonable price and in hopefully reasonable qty (say, min. 10
or 20 pc etc...). I welcome anyone's email to me.
 
Thanks !        Jo Zeng

Graham Davies <YahooGroups@ecrostech.com> wrote:

--- In AVR-Chat@yahoogroups.com, Joe Tsang <ic_source_joe@y...> wrote:

> I am authorized Atmel re-seller
> Anyone interested ?
> [for example prices, see Joe's post]

In case anyone in this group is thinking of ordering MCUs from Joe, I 
will report on my experience.

Joe is associated with Baite Group, an authorized Atmel distributor 
in Hong Kong. I ordered about seventy MCUs from him of various 
kinds.  His prices are definitely cheap compared to, say, Digi-Key, 
in quantities from 10 to 50. I paid him with PayPal from my account 
balance. Unless he upgrades to a business or premium account, he will 
not be able to accept credit card payments unless PayPal have changed 
their policy since I last checked.

Joe shipped the MCUs on Wednesday (it was already Thursday for him) 
by Express Mail Service (EMS) and sent me the tracking number.  I 
tracked them to my local post office on the USPS Web site and they 
were delivered to my door today, Saturday.

The MCUs are all this year's date code and industrial grade.  The 
surface mount parts came in a tray, the DIP parts in individual 
plastic compartments joined end-to-end. They were accompanied by a 
proper Baite Group invoice. The customs declaration was properly 
filled out, including the HS Tariff number. I did not have to pay 
duty.

So, it seems to me that if you want to take advantage of Joe's low 
prices, it is safe to do so.  Here are some tips:

1 - Joe is not always in a position to reply to e-mail promptly as he 
has to travel for work. Also, he seems to want to quote your order 
rather than fix prices, minimum quantity, etc. in advance. What this 
means is that you should allow plently of time and not expect to 
close a deal with Joe as quickly as you can turn around a Digi-Key 
order.

2 - Give Joe your telephone number so that he can put it on the 
shipping forms. If there is any problem when the stuff gets to the 
US, the post office can call you.

3 - If, when you go to pay, Joe still has a personal PayPal account, 
you may not be able to pay from a credit card. You can check with 
PayPal to be sure, but I think Joe would have to upgrade to receive 
your payment. Then Joe would have to pay fees to PayPal (as I do - 
it's not too bad). If you can pay from your PayPal account balance, 
Joe can receive the payment even in a personal account.

In summary, Joe is above board and ready to give you a deal on Atmel 
MCUs.

Graham.





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Dave,

> >do i just connect /PEN pin to 4K7 resistor and VCC???
> /Program ENable   Enables programming when low.
> Tying it high would maybe be a mistake, maybe not.

I disagree, unused pins should be taken high via a resistor.. you wouldn't
want that pin bouncing to a zero level whilst in circuit now would you?
So, *YES*, take it to VCC via a 4k7/10k resistor..

Paul

Larry,

> Check the schematic for the chip in the manual: they show an internal
> pull-up on that line. (fig 22, reset logic).

neat.

> Same for the reset line - you can leave it unconnected if you are using
the
> internal BOD.  This is true for all the modern AVR's (not so for the very
> first batch of classics).

thats where it came from, playing with the mega103, 8515 and a few other now
happy and distant memories.

Paul

Check the schematic for the chip in the manual: they show an internal
pull-up on that line. (fig 22, reset logic).

Same for the reset line - you can leave it unconnected if you are using the
internal BOD.  This is true for all the modern AVR's (not so for the very
first batch of classics).

-----Original Message-----
From: Paul Maddox [mailto:P.Maddox@signal.qinetiq.com]
Sent: Monday, December 13, 2004 1:35 AM
To: AVR-Chat@yahoogroups.com
Subject: Re: [AVR-Chat] /PEN pin on ATMEGA128



Dave,

> >do i just connect /PEN pin to 4K7 resistor and VCC???
> /Program ENable   Enables programming when low.
> Tying it high would maybe be a mistake, maybe not.

I disagree, unused pins should be taken high via a resistor.. you wouldn't
want that pin bouncing to a zero level whilst in circuit now would you?
So, *YES*, take it to VCC via a 4k7/10k resistor..

Paul






Yahoo! Groups Links

--- In AVR-Chat@yahoogroups.com, "Dennis Kazar" <dkazar@s...> wrote:

> Were any of the parts Atmega168?

No. I got a bunch of ATmega16L-AI for my AVR ICE-Cube product and a 
selection of ATmega162 and ATmega32L for various purposes and my 
spares drawer. Joe was flexible about minimum quantity because the 
total number of parts was reasonable, but obviously you can't expect 
him to deal in ones and twos at the price point he's offering.

Why not drop Joe a line?

Graham.
http://www.ecrostech.com

--- In AVR-Chat@yahoogroups.com, "DG (dee-gee)" <dgacina@y...> wrote:

> I'm reacting to this
> childish thing ...

Your reaction is not unjustified, but please, for the benefit of the 
group, state your counter-arguments in clear, calm language.  Insults 
and counter-insults have absolutely no place here.

Graham.

One last tid-bit: the reset line has no protection diodes to V+  This is the
only pin without protection since it needs to be able to respond to +12v for
parallel programming mode.

For most situations this isn't a big deal, but most people simply run that
line out to their ISP header without any protection.  I never do any more
than put a 1-4k resister in line, but having a diode on the connector side
of the resister connected to V+ would guarantee a safe header.

-----Original Message-----
From: Paul Maddox

Larry,

> Check the schematic for the chip in the manual: they show an internal
> pull-up on that line. (fig 22, reset logic).

neat.

> Same for the reset line - you can leave it unconnected if you are using
the
> internal BOD.  This is true for all the modern AVR's (not so for the very
> first batch of classics).

thats where it came from, playing with the mega103, 8515 and a few other now
happy and distant memories.

Paul

--- In AVR-Chat@yahoogroups.com, Joe Tsang <ic_source_joe@y...> wrote:
> Thanks Graham for such detailed report !!
>  
> I am just a simple Atmel IC salesperson (from an authorized
> Atmel reseller) that sells genuine Atmel parts in hopefully
> reasonable price and in hopefully reasonable qty (say, min. 10
> or 20 pc etc...). I welcome anyone's email to me.
>  
> Thanks !        Jo Zeng


Great news.

Joe,

Please put your link, websire or e-mail address in the LINKS sections 
of the yahoo group web page.

Dave

On 13 Dec 2004 at 17:53, Dave Mucha wrote:

> 
> 
> --- In AVR-Chat@yahoogroups.com, Joe Tsang <ic_source_joe@y...> wrote:
> > Thanks Graham for such detailed report !!
> >  
> > I am just a simple Atmel IC salesperson (from an authorized
> > Atmel reseller) that sells genuine Atmel parts in hopefully
> > reasonable price and in hopefully reasonable qty (say, min. 10
> > or 20 pc etc...). I welcome anyone's email to me.
> >  
> > Thanks !        Jo Zeng
> 
> 
> Great news.
> 
> Joe,
> 
> Please put your link, websire or e-mail address in the LINKS sections 
> of the yahoo group web page.
> 
> Dave
> 

	And please upgrade your Paypal account to accept Credit Card 
payments!  ;-))

	Mark

Thanks for interest in me and my company !
FYI:
my contact = ic_source_joe@yahoo.com
my company web-site = www.baite-group.com
pls kindly contact me because:
1. I am one of the few salesman in my company speak and write English better
2. most of the salesman in my company mainly interested in large qty order
3. I have the good intention of serving the AVR-Chat communty that I had started
    a little introduction to AVR-Chat some time ago.
4. I thank Mr. David Graham for his kind mentioning my service. And I appreciate
    his courage of using my service in the first place (after his 'calculated risk' seems
    OK to go for it, I assume)
Thanks !
Jo Zeng
P.S. I prefer to use  www.moneygram.com  or normal bank T/T for large amount
       because it is faster for me to receive money.  Sorry, paypal folks !
 


Mark Jordan <mark@cpovo.net> wrote: On 13 Dec 2004 at 17:53, Dave Mucha wrote:

> 
> 
> --- In AVR-Chat@yahoogroups.com, Joe Tsang <ic_source_joe@y...> wrote:
> > Thanks Graham for such detailed report !!
> >  
> > I am just a simple Atmel IC salesperson (from an authorized
> > Atmel reseller) that sells genuine Atmel parts in hopefully
> > reasonable price and in hopefully reasonable qty (say, min. 10
> > or 20 pc etc...). I welcome anyone's email to me.
> >  
> > Thanks !        Jo Zeng
> 
> 
> Great news.
> 
> Joe,
> 
> Please put your link, websire or e-mail address in the LINKS sections 
> of the yahoo group web page.
> 
> Dave
> 

      And please upgrade your Paypal account to accept Credit Card 
payments!  ;-))

      Mark



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On Mon, Dec 13, 2004 at 06:47:22AM -0800, Larry Barello wrote:

> One last tid-bit: the reset line has no protection diodes to V+ This
> is the only pin without protection since it needs to be able to
> respond to +12v for parallel programming mode.
> 
> For most situations this isn't a big deal, but most people simply
> run that line out to their ISP header without any protection.  I
> never do any more than put a 1-4k resister in line, but having a
> diode on the connector side of the resister connected to V+ would
> guarantee a safe header.

See Atmel App Note AVR040: EMC Design Considerations, Figure 10 on
page 14.  This is the circuit I use on my MAVRIC boards and it
provides the same level of protection for /RESET as on the other I/O
pins.

-Brian
-- 
Brian Dean
BDMICRO - ATmega128 Based MAVRIC Controllers
http://www.bdmicro.com/

Joe,

> my company web-site = www.baite-group.com

good music, I could boogy to this all night.

I'll be sending you an email off list shortly with a request.

Paul

On 13 Dec 2004 at 1:12, Lasse Madsen wrote:

> Hi Ridho,
>  
> Tie PEN to your supply (high) no need for a series resistor that's just a
> waist of money. 

Correct.

> PEN stand for Parallel Programming Enable if you're not going to use this
> FORGET ABOUT IT! Tie it high and don't listen to what the others say.

Wrong. PEN stands for Programming Enable and it is for SPI 
programming - not parallel. Please check the data sheet (page 7 of 
rev I). It is only used on a power-on-reset.

Regards,
Les Grant.


-------------------------------------------------------------
Les Grant. VK2KYJ.      Phone: 02 9896 7150 Fax: 02 9896 7153
Grantronics Pty Ltd     Int'l: +612 9896 7150, +612 9896 7153
ABN 46 070 123 643
PO Box 275, Wentworthville. NSW. 2145. Australia.            
http://www.grantronics.com.au  mailto:info@grantronics.com.au
Microcontroller Hardware and Software development:  Atmel AVR
8051 derivatives, 80C196 family, C, ASM, Digital and analogue 
-------------------------------------------------------------
Australian distributor for:
o Dunfield Development Systems low cost development tools
o ImageCraft AVR and Motorola Windows-hosted C compilers
o ELNEC Device Programmers (E)EPROMs, Flash, Micros, PLDs
o CAN-BUS Hardware and Software from LAWICEL
o Logical Systems Programming, Prototyping & Production Adaptors
-------------------------------------------------------------

From page 7 of the data sheet:
"PEN is a programming enable pin for the SPI Serial Programming mode. 
By holding this pin low during a Power-on Reset, the device will 
enter the SPI Serial Programming mode. PEN has no function during 
normal operation." Note that it is only sensed during Power-on Reset. 
For normal SPI programming, PEN is not used. Tie it directly to Vcc.

Also, look at the Reset Logic diagram on page 48. This suggests that 
the CPU will be permanently reset if you tie PEN low.

Regards,
Les Grant.


On 12 Dec 2004 at 2:56, Ridho Alpha wrote:

> 
> hello...
> 
> i am starting to use ATMEGA128 right now..but i am a bit confused what /PEN pin is for??? how do use it???
> 
> do i just connect /PEN pin to 4K7 resistor and VCC???
> 
> please give same clues...
> 
> thank you
> 
> 
> ---------------------------------
>   Yahoo! Messenger - Communicate instantly..."Ping" your friends today! Download Messenger Now


-------------------------------------------------------------
Les Grant. VK2KYJ.      Phone: 02 9896 7150 Fax: 02 9896 7153
Grantronics Pty Ltd     Int'l: +612 9896 7150, +612 9896 7153
ABN 46 070 123 643
PO Box 275, Wentworthville. NSW. 2145. Australia.            
http://www.grantronics.com.au  mailto:info@grantronics.com.au
Microcontroller Hardware and Software development:  Atmel AVR
8051 derivatives, 80C196 family, C, ASM, Digital and analogue 
-------------------------------------------------------------
Australian distributor for:
o Dunfield Development Systems low cost development tools
o ImageCraft AVR and Motorola Windows-hosted C compilers
o ELNEC Device Programmers (E)EPROMs, Flash, Micros, PLDs
o CAN-BUS Hardware and Software from LAWICEL
o Logical Systems Programming, Prototyping & Production Adaptors
-------------------------------------------------------------

Les,

> Wrong. PEN stands for Programming Enable and it is for SPI
> programming - not parallel. Please check the data sheet (page 7 of
> rev I). It is only used on a power-on-reset.

Disagree, I tied the /PEN pin high (via a resistor, yeah I know) and I
program it with the AVRISP programming adapter without any problems (using
RXD and TXD of USART0 instead of MOSI/MISO lines)

Paul

--- In AVR-Chat@yahoogroups.com, "Paul Maddox" <P.Maddox@s...> wrote:

> > ... PEN ... is for SPI
> > programming ...

> Disagree, I tied the /PEN
> pin high ... and I program 
> it with the AVRISP ...

This is getting tiresome. From what I've read here, not even looking 
at the data sheet, it is pretty clear that you *can* use /PEN to get 
into serial ISP mode, but *you don't have to* if it works fine the 
normal way. So go ahead and tie it high. Tie it direct if you're sure 
you'll have no trouble getting into serial ISP mode or via a resistor 
if you think you might want to hold it low during reset to help. Are 
we done now?

Graham.

Hi Paul,

My mistake, I should have said ISP - not SPI. My point was that it 
has nothing to do with parallel programming and it is sensed on power-
up.

Cheers,
Les.


On 16 Dec 2004 at 15:17, Paul Maddox wrote:

> 
> Les,
> 
> > Wrong. PEN stands for Programming Enable and it is for SPI
> > programming - not parallel. Please check the data sheet (page 7 of
> > rev I). It is only used on a power-on-reset.
> 
> Disagree, I tied the /PEN pin high (via a resistor, yeah I know) and I
> program it with the AVRISP programming adapter without any problems (using
> RXD and TXD of USART0 instead of MOSI/MISO lines)
> 
> Paul
> 
> 
> 
> 
>  
> Yahoo! Groups Links
> 
> 
> 
>  
> 
> 
> 


-------------------------------------------------------------
Les Grant. VK2KYJ.      Phone: 02 9896 7150 Fax: 02 9896 7153
Grantronics Pty Ltd     Int'l: +612 9896 7150, +612 9896 7153
ABN 46 070 123 643
PO Box 275, Wentworthville. NSW. 2145. Australia.            
http://www.grantronics.com.au  mailto:info@grantronics.com.au
Microcontroller Hardware and Software development:  Atmel AVR
8051 derivatives, 80C196 family, C, ASM, Digital and analogue 
-------------------------------------------------------------
Australian distributor for:
o Dunfield Development Systems low cost development tools
o ImageCraft AVR and Motorola Windows-hosted C compilers
o ELNEC Device Programmers (E)EPROMs, Flash, Micros, PLDs
o CAN-BUS Hardware and Software from LAWICEL
o Logical Systems Programming, Prototyping & Production Adaptors
-------------------------------------------------------------

I'm designing a device that will use a 44 pin AVR chip like the 
Mega32, or up. It will use whatever has the code space needed.

This device stores data on a USB-key (flash drive) in FAT16/FAT32 
format. Speed of reading from and writing to the USB key is probably 
not an issue. I believe that the FAT software will not be an issue 
either. AFAIK, the USB-key interface requires a chip like the Cyprus 
SL811HS which can run in host mode. I'm sure there are other chips 
from Philips, Atmel, etc. (note: I'm not after a prebuilt module 
solution that does this - yes, they exist).

I also want the same device, not necessarily at the same time, to be 
able to act as a standard USB peripheral and look like a standard COM 
port to a USB host. Again, the SL811HS could do this too.

Basic question is, what other USB peripheral chips could do this too? 
A prime requirement is availability, relatively low cost, and ability 
to be integrated with an embedded AVR device. As noted, speed is not a 
serious consideration.

I could qualify further what I'm after, but I don't want that to 
restrict anyone's response. I recognise there will be a trade off 
between development time and module/component/etc. costs, but at the 
end of the day, the time I spend developing the software is an 
investment and the results can (must?) be re-used. I'm really looking 
at what silicon & software solution would be cheapest assuming I'm 
making at least 1,000 of these devices.

Thanks for any replies, Peter



















te.

At 10:35 AM 8/09/2005, you wrote:
>I'm designing a device that will use a 44 pin AVR chip like the
>Mega32, or up.


Isn't the 44pin device restricting you to basically the M32 max?
A 64 pin will give you M64,128 or 256...or if you use assembler
you can get away with a m8535 perhaps :-)

Which day will you be at the show so that I can stay away from the
BEC stand? Whatever you do don't damage my display :-)



Regards

John Samperi

******************************************************
                         Ampertronics Pty. Ltd.
   11 Brokenwood Place Baulkham Hills, NSW 2153 AUSTRALIA
          Tel. (02) 9674-6495       Fax (02) 9674-8745
                Email: samperi@ampertronics.com.au
                  Website  http://www.ampertronics.com.au
* Electronic Design   * Custom Products   * Contract Assembly
******************************************************

John Samperi wrote:
> Isn't the 44pin device restricting you to basically the M32 max?
> A 64 pin will give you M64,128 or 256...or if you use assembler
> you can get away with a m8535 perhaps :-)

Sure, 64 pins is OK, but I figure a 44 pin M32 will be enough code 
(and RAM) space for FAT16/32 and the host mode interface. But throw in 
Peripheral mode ....










.

John Samperi wrote:
> Which day will you be at the show so that I can stay away from the
> BEC stand? Whatever you do don't damage my display :-)

No, be there on Wednesday, I'm not always angry ;-).

Although, at the moment, USB has me tearing out my hair.

Peter.

Have you seen this AVR chip yet?  48 Mhz clock, and USb built in:

http://www.atmel.com/dyn/products/product_card.asp?family_id=655&family_name=USB+Controllers&part_id=3556

On Thu, 2005-09-08 at 10:35 +1000, Peter Gargano wrote:
> I'm designing a device that will use a 44 pin AVR chip like the 
> Mega32, or up. It will use whatever has the code space needed.


  Who knew they were making 48 Mhz AVRs!????

Tom

Thomas Keller wrote:
>   Have you seen this AVR chip yet?  48 Mhz clock, and USb built in:
> http://www.atmel.com/dyn/products/product_card.asp?family_id=655&family_name=USB+Controllers&part_id=3556

This is the closest AVR part that would do the USB part of what I 
want. I think it's overkill:

   http://www.atmel.com/dyn/products/product_card.asp?part_id=3393

Note that Host-Mode USB means that USB peripherals can plug into it 
your device, rather than your device plugging into a PC with a USB port.

Peter











.

Peter:

   if I read the data sheet correctly, the part I referred you to
supports host mode (OTG?).  Since it also includes the 48 Mhz AVR
processor, itm ay be just what you're looking for (though I have no clue
what the price point on this part is).

Tom

Thomas Keller wrote:
> Peter:
> 
>    if I read the data sheet correctly, the part I referred you to
> supports host mode (OTG?).  Since it also includes the 48 Mhz AVR
> processor, itm ay be just what you're looking for (though I have no clue
> what the price point on this part is).

that link you gave ..

http://www.atmel.com/dyn/products/product_card.asp?family_id=655&family_name=USB+Controllers&part_id=3556

.. tells me it's the AT76C713 (tell me if I'm wrong?).

I see no mention of host or master mode (also not quite the same as 
USB OTG).  Also, as that processor operates out of SRAM internally (I 
guess for speed reasons), it boots up from a serial EEPROM, so there's 
little possibility of hiding your firmware from theft (yes, that is a 
consideration).

Peter

















.

Has anyone tried this?

  http://www.matwei.de/doku.php?id=en:electronics:usbisp

I have some spare space on a proto panel ...

Peter









te.

Dennis Clark wrote:

>>  http://www.matwei.de/doku.php?id=en:electronics:usbisp

> Can you buy it anywhere?  It sure sounds nice.  I like the fact that it 
> is using the FTDI chip, and the parallel one so that it doesn't have the 
> serial port limitations on speed.  BUT, are there drivers for it for the 
> Macintosh that allows me to use it with AVRdude there?

Apparently FTDI have drivers for MAC, if the chip is not already 
supported in the OS rev you have.

   http://www.ftdichip.com/Drivers/FT232-FT245Drivers.htm

Peter







.

Peter Gargano wrote:
> Has anyone tried this?
> 
>   http://www.matwei.de/doku.php?id=en:electronics:usbisp
> 
> I have some spare space on a proto panel ...
> 
> Peter
> 
> 
> 
> 
> 
> 
> 
> 
> 
> te.

Can you buy it anywhere?  It sure sounds nice.  I like the fact that it 
is using the FTDI chip, and the parallel one so that it doesn't have the 
serial port limitations on speed.  BUT, are there drivers for it for the 
Macintosh that allows me to use it with AVRdude there?

DLC


-- 
---------------------------------------
Dennis Clark    TTT Enterprises
---------------------------------------

Dennis Clark wrote:
> Can you buy it anywhere?

I'm not aware of this being available as a product.

Does anyone know if the STK500 "protocol" is documented?

Peter





.

At 10:18 AM 9/09/2005, you wrote:

>Does anyone know if the STK500 "protocol" is documented?

Look for AVR068 for version 2.


Regards

John Samperi

******************************************************
                         Ampertronics Pty. Ltd.
   11 Brokenwood Place Baulkham Hills, NSW 2153 AUSTRALIA
          Tel. (02) 9674-6495       Fax (02) 9674-8745
                Email: samperi@ampertronics.com.au
                  Website  http://www.ampertronics.com.au
* Electronic Design   * Custom Products   * Contract Assembly
******************************************************

On Fri, 2005-09-09 at 10:18 +1000, Peter Gargano wrote:
> Dennis Clark wrote:
> > Can you buy it anywhere?
> I'm not aware of this being available as a product.

  If you're referring to the USBisp that we had a pointer to earlier,
yes, you can purchase the PC Boards from the fellow who designed/built
it.  He includes an email link for that purpose on his website, you just
have to search for it a little.

  He didn't specify the price, but indicated it was, to borrow his term
"a small amount of money."

  (I really shouldn't poke fun, his English is one hell of a lot better
thanmy German (or any other lnaguage, for that matter))

Tom

http://www.kitkorea.com/front/php/product.php?product_no=857&main_cate_no=1&
display_group=2

The above URL is in Korean, but you should be able to figure it out by the
pictures.  An USB dongle (very small) with both STK500 AND JTAG ports.
Compatible with studio 4.11 and above.  $45 usd.  They have an English page
(that they sent to me directly in email), but the best bet is to email them
for more details.

Cheers!

-----Original Message-----
From: AVR-Chat@yahoogroups.com [mailto:AVR-Chat@yahoogroups.com] On Behalf
Of Peter Gargano
Sent: Thursday, September 08, 2005 3:30 PM
To: AVR-Chat@yahoogroups.com
Subject: [AVR-Chat] USB ISP - STK500 compatible

Has anyone tried this?

  http://www.matwei.de/doku.php?id=en:electronics:usbisp

I have some spare space on a proto panel ...

Peter









te.



 
Yahoo! Groups Links

What show? Is there anything i don't know? Is it going to be in sydney? where?
(please dont tell me it's tomorrow)

:D

On 9/8/05, Peter Gargano <peter@techedge.com.au> wrote:
> John Samperi wrote:
> > Which day will you be at the show so that I can stay away from the
> > BEC stand? Whatever you do don't damage my display :-)
> 
> No, be there on Wednesday, I'm not always angry ;-).
> 
> Although, at the moment, USB has me tearing out my hair.
> 
> Peter.
> 
> 
> 
> 
> Yahoo! Groups Links
> 
> 
> 
> 
> 
> 
>

Sydney show ground (Homebush) 13 to 15 Sept (Tues to Thurs next week)

   http://www.austronicsexpo.com.au/

Astria Nur Irfansyah wrote:
> What show? Is there anything i don't know? Is it going to be in sydney? where?





p.

Peter Gargano wrote:
> Sydney show ground (Homebush) 13 to 15 Sept (Tues to Thurs next week)

Actually, that's "Sydney Showground"

BTW, when in doubt, Google ...

   http://www.google.com.au/search?hl=en&q=austronics

P.

Austronics is on at the Showgrounds on Tue, Weds, thurs next week.

www.austronicsexpo.com.au

If you don't have a trade pass it will set you back $15 for entry. The show 
alternates between Sydney & Jeff's shed in Melbourne on alternate years.

Cheers

Don

Astria Nur Irfansyah wrote:

> What show? Is there anything i don't know? Is it going to be in sydney? where?
> (please dont tell me it's tomorrow)
> 
> :D
> 
> On 9/8/05, Peter Gargano <peter@techedge.com.au> wrote:
> 
>>John Samperi wrote:
>>
>>>Which day will you be at the show so that I can stay away from the
>>>BEC stand? Whatever you do don't damage my display :-)
>>
>>No, be there on Wednesday, I'm not always angry ;-).
>>
>>Although, at the moment, USB has me tearing out my hair.
>>
>>Peter.
>>

Dennis Clark schrieb:
> Can you buy it anywhere?  It sure sounds nice.  I like the fact that it 
> is using the FTDI chip, and the parallel one so that it doesn't have the 
> serial port limitations on speed.  BUT, are there drivers for it for the 
> Macintosh that allows me to use it with AVRdude there?
> 
> DLC

I know it's not nice to start with an OT-thread but this bugs me right 
now: My FT2232C in FIFO mode allows sending with around 4µs cycle time 
for one byte (burst, unoptimized code on an ATmega128@16MHz in busy loop 
being the limiting factor), which would be around 2MBit/s - sounds 
reasonable.
But it seems to take some time off every now and then to do USB 
transfers - a quick benchmark against a PC receiving showed something 
around 40-50kbyte/s aka 0,4Mbit/s throughput on average!?

So when you say "it doesn't have the serial port limitations on speed" - 
  what *realistic* throughput has anyone seen on a 245BM/FT232C in FIFO 
mode yet? The data sheet says "up to 1Mbyte/s" IIRC.

Philipp

On 9 Sep 2005 at 17:56, Philipp Adelt wrote:

> Dennis Clark schrieb:
> > Can you buy it anywhere?  It sure sounds nice.  I like the fact that it 
> > is using the FTDI chip, and the parallel one so that it doesn't have the
> > serial port limitations on speed.  BUT, are there drivers for it for the
> > Macintosh that allows me to use it with AVRdude there?
> > 
> > DLC
> 
> I know it's not nice to start with an OT-thread but this bugs me right 
> now: My FT2232C in FIFO mode allows sending with around 4µs cycle time 
> for one byte (burst, unoptimized code on an ATmega128@16MHz in busy loop 
> being the limiting factor), which would be around 2MBit/s - sounds 
> reasonable.
> But it seems to take some time off every now and then to do USB 
> transfers - a quick benchmark against a PC receiving showed something 
> around 40-50kbyte/s aka 0,4Mbit/s throughput on average!?
> 
> So when you say "it doesn't have the serial port limitations on speed" - 
>   what *realistic* throughput has anyone seen on a 245BM/FT232C in FIFO 
> mode yet? The data sheet says "up to 1Mbyte/s" IIRC.
> 
> Philipp
> 

	I have a client using the FT232 at 921600bps with an ATmega128 @ 14.7456MHz 
and a VB6 program running on the PC side. He just transfers 3kByte files every 
minute, so I have never measured the throughput.

	Mark Jordan

Mark Jordan schrieb:
> 	I have a client using the FT232 at 921600bps with an ATmega128 @ 14.7456MHz 
> and a VB6 program running on the PC side. He just transfers 3kByte files every 
> minute, so I have never measured the throughput.
> 
> 	Mark Jordan

OK i see, thanks for the input!

Philipp