Synth-DIY Yahoo! Groups Archives

Thread

USB key

2005-03-02 by jme_cd

with all the talk about usb here, i have wanted to make an mp3 player
that interfaces via usb to the computer to download songs to it.
either this or a usb key (i'd say this is easier :D ). 
at http://www.myplace.nu/mp3/yampp4.htm their mp3 is recognised at a
drive. is it that simple that all i need to to is add a usb chip or do
i need to write code to get it to work like this?
also any sites/help on making something like this would be great too.

thanks for any help
jamie

Re: [AVR-Chat] USB key

2005-03-02 by Honea

Yeah, I was thinking about making something similiar.. but without a screen (so I can make this as small as possible :) )

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

From: jme_cd

To: AVR-Chat@yahoogroups.com

Sent: Wednesday, March 02, 2005 6:06 AM

Subject: [AVR-Chat] USB key

with all the talk about usb here, i have wanted to make an mp3 player
that interfaces via usb to the computer to download songs to it.
either this or a usb key (i'd say this is easier :D ).
at http://www.myplace.nu/mp3/yampp4.htm their mp3 is recognised at a
drive. is it that simple that all i need to to is add a usb chip or do
i need to write code to get it to work like this?
also any sites/help on making something like this would be great too.

thanks for any help
jamie

Re: [AVR-Chat] USB key

2005-03-02 by Honea

Not sure if this helps.. . but might be relavent:

----- off bascom mailing list:

The January 2005 issue of Circuit Cellar Magazine has an article on a PC
controlled R/C device that uses a general purpose AVR ATMEGA 8 in an
implementation of USB 1.2 that they say costs less than $10.

After seeing this article, I found the code and design info for the USB part
is posted at :
http://www.cesko.host.sk/IgorPlugUSB/IgorPlug-USB%20(AVR)_eng.htm

Ian

------

Looks pretty interesting.. I am definitly going to look into this after my test :)

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

From: Honea

To: AVR-Chat@yahoogroups.com

Sent: Wednesday, March 02, 2005 8:18 AM

Subject: Re: [AVR-Chat] USB key

Yeah, I was thinking about making something similiar.. but without a screen (so I can make this as small as possible :) )

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

From: jme_cd

To: AVR-Chat@yahoogroups.com

Sent: Wednesday, March 02, 2005 6:06 AM

Subject: [AVR-Chat] USB key

with all the talk about usb here, i have wanted to make an mp3 player
that interfaces via usb to the computer to download songs to it.
either this or a usb key (i'd say this is easier :D ).
at http://www.myplace.nu/mp3/yampp4.htm their mp3 is recognised at a
drive. is it that simple that all i need to to is add a usb chip or do
i need to write code to get it to work like this?
also any sites/help on making something like this would be great too.

thanks for any help
jamie

Re: USB key

2005-03-02 by tr3nd42

Yeah. I think my link before wan't really coherent.

So you have seen the yammp project. Has anyone bought one of these? 
The prices are foreign to me.. and am wondering if there is a place 
where i can buy these parts in America.

thanks
Lee

--- In AVR-Chat@yahoogroups.com, "jme_cd" <jme_cd@y...> wrote:
> 
> with all the talk about usb here, i have wanted to make an mp3 
player
> that interfaces via usb to the computer to download songs to it.
> either this or a usb key (i'd say this is easier :D ). 
> at http://www.myplace.nu/mp3/yampp4.htm their mp3 is recognised at 
a
> drive. is it that simple that all i need to to is add a usb chip 
or do
> i need to write code to get it to work like this?
> also any sites/help on making something like this would be great 
too.

Show quoted textHide quoted text

> 
> thanks for any help
> jamie

Re: [AVR-Chat] Re: USB key

2005-03-02 by Jesper Hansen

Lee:
Foreign prices ?
Why don't you just select US$ as currency in the shop ? ;-)
I have no distributor in the US, but I have several hundred customers all 
over
the world, and still haven't had a single complaint. (Well, there was this
dude in Singapore that dumped the kit in the wastebasket, because it was
way too complicated, but he didn't actually complain !).

Jamie:
With the PDIUSBD12 chip, you need a fair amount of  code in the player
to make it work.
That's why I skipped that chip, and used the FTDI chips instead.
As we were using a custom filesystem to maximize the use of card or disk
space, the player wouldn't be able to pop up as a standard drive anyway.

Using a USB-key for memory is a different, but also somewhat complicated
way. That would require ther player to implement the USB Host protocol.
While the chips (like the SL811HS) are avilable, the software side if it is
relatively complicated, even though some shortcuts can be made.


/Jesper
www.yampp.com
www.jelu.se



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

Show quoted textHide quoted text

From: "tr3nd42" <fredit@charter.net>
To: <AVR-Chat@yahoogroups.com>
Sent: Wednesday, March 02, 2005 9:05 PM
Subject: [AVR-Chat] Re: USB key


>
>
> Yeah. I think my link before wan't really coherent.
>
> So you have seen the yammp project. Has anyone bought one of these?
> The prices are foreign to me.. and am wondering if there is a place
> where i can buy these parts in America.
>
> thanks
> Lee
>
> --- In AVR-Chat@yahoogroups.com, "jme_cd" <jme_cd@y...> wrote:
>>
>> with all the talk about usb here, i have wanted to make an mp3
> player
>> that interfaces via usb to the computer to download songs to it.
>> either this or a usb key (i'd say this is easier :D ).
>> at http://www.myplace.nu/mp3/yampp4.htm their mp3 is recognised at
> a
>> drive. is it that simple that all i need to to is add a usb chip
> or do
>> i need to write code to get it to work like this?
>> also any sites/help on making something like this would be great
> too.
>>
>> thanks for any help
>> jamie
>
>
>
>
>
>
> Yahoo! Groups Links
>
>
>
>
>
>
>
>

Re: [AVR-Chat] Re: USB key

2005-03-02 by Honea

Hah, sorry.. the lack of sleep is getting to me.

thanks for the correction on the pricing.

I saw your Yampp install in your car... that is incredible!

Lee

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

Show quoted textHide quoted text

From: Jesper Hansen

To: AVR-Chat@yahoogroups.com

Sent: Wednesday, March 02, 2005 3:28 PM

Subject: Re: [AVR-Chat] Re: USB key

Lee:
Foreign prices ?
Why don't you just select US$ as currency in the shop ? ;-)
I have no distributor in the US, but I have several hundred customers all
over
the world, and still haven't had a single complaint. (Well, there was this
dude in Singapore that dumped the kit in the wastebasket, because it was
way too complicated, but he didn't actually complain !).

Jamie:
With the PDIUSBD12 chip, you need a fair amount of code in the player
to make it work.
That's why I skipped that chip, and used the FTDI chips instead.
As we were using a custom filesystem to maximize the use of card or disk
space, the player wouldn't be able to pop up as a standard drive anyway.

Using a USB-key for memory is a different, but also somewhat complicated
way. That would require ther player to implement the USB Host protocol.
While the chips (like the SL811HS) are avilable, the software side if it is
relatively complicated, even though some shortcuts can be made.

/Jesper
www.yampp.com
www.jelu.se

----- Original Message -----
From: "tr3nd42"
To:
Sent: Wednesday, March 02, 2005 9:05 PM
Subject: [AVR-Chat] Re: USB key

>
>
> Yeah. I think my link before wan't really coherent.
>
> So you have seen the yammp project. Has anyone bought one of these?
> The prices are foreign to me.. and am wondering if there is a place
> where i can buy these parts in America.
>
> thanks
> Lee
>
>; --- In AVR-Chat@yahoogroups.com, "jme_cd" wrote:
>>
>> with all the talk about usb here, i have wanted to make an mp3
> player
>> that interfaces via usb to the computer to download songs to it.
>> either this or a usb key (i'd say this is easier :D ).
>> at http://www.myplace.nu/mp3/yampp4.htm their mp3 is recognised at
> a
>> drive. is it that simple that all i need to to is add a usb chip
> or do
>> i need to write code to get it to work like this?
>> also any sites/help on making something like this would be great
> too.
>>
>> thanks for any help
>> jamie
>
>
>
>
>
>
> Yahoo! Groups Links
>
>
>
>
>
>
>
>

Re: [AVR-Chat] INTERFACING I2S

2005-03-02 by Jim Wagner

I2C is the same as "TWI" in Atmel products.

Jim

On Wed, 2 Mar 2005 19:52:52 -0300 (ART)
 Jose Fuentes <josecarlosfuentes@yahoo.com.ar> wrote:
> 
> 
> 
> 
> 
> 
> Have any of you interfaced atmega to codecs using i2s
> protocol?
> Regards
> 
> Jose
> 
> 
> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
> 
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> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
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INTERFACING I2S

2005-03-02 by Jose Fuentes

Have any of you interfaced atmega to codecs using i2s
protocol?
Regards

Jose


	

	
		
___________________________________________________________ 
250MB gratis, Antivirus y Antispam 
Correo Yahoo!, el mejor correo web del mundo 
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Re: USB key

2005-03-03 by jme_cd

Jesper,
thanks for the info. Also your mp3 are really good, i hope i can make
soemthing as good. 

basically, when you plug your mp3 players into the computer, are the
usb chips automatically recognised and added to my computer as a drive
or do you need to write code to get this to  happen?

also have you got stuff on how you got your SD cards to interface to
your avr?

thanks
jamie

Re: USB key

2005-03-03 by jme_cd

> basically, when you plug your mp3 players into the computer, are the
> usb chips automatically recognised and added to my computer as a drive
> or do you need to write code to get this to  happen?

while im at it, site/plans to make a usb key drive. i am yet to find
any. im looking at the FTDI chips as they seem to be most popular
around  here and a ATmega8 or 16 at i want to learn to use these (pref
the atmega8)

thanks
sorry for causing trouble :)
jamie