I wish to have a MicroSD card on a data logger. Where do I find a
datasheet on these and get an adaptor/connector to suit?

TIA

Peter

------------------------------------



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Peter Grey wrote:
> I wish to have a MicroSD card on a data logger. Where do I find a
> datasheet on these and get an adaptor/connector to suit?
>

First hit: microsd spi


So, I'm still not clear if you can talk the microSD in classical SPI
mode, doesn't look like it. (Got lines?)

And this stuff always gets me. I'd like to talk to SD, but SD is already
obsolete, so, why should I bother?

Keep this group up to date! Thank you!

Best, Dan.

------------------------------------



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For stuff like this I keep subscribed to the newsletters from Digikey,
Mouser and the like, a recent update from mouser turned up this:-

http://au.mouser.com/Hirose_MicroSD/?utm_source=newsletter+Sep29+09&utm_medium=email&utm_campaign=HiroseElectricSep29_09

If you don't use them as a source at least it gives you some part
numbers to chase.

As for protocols I'm certain they've appeared in this group many times,
but the Ti app note used to be Slaa281. I have the 'b' version I can
send with source if you can't find it.

Al

Peter Grey wrote:
> I wish to have a MicroSD card on a data logger. Where do I find a
> datasheet on these and get an adaptor/connector to suit?
>
> TIA
>
> Peter
>
> ------------------------------------

______________________________
Stellaris® MCU Family: New Parts, New Package, New Price.


(You need to be a member of msp430 -- send a blank email to msp430-subscribe@yahoogroups.com )

I've used the open source (Sourceforge) EFSL FAT filesystem code and modified the physical interface layer to bit-bang the SPI interface to an SD card, it worked for me.

You can find the modified EFSL code inside the sourcecode archive link at http://pixelproc.net/gpsvario.html

The clk & data lines needed pullup resistors, can't remember any other gotchas.

--- In m...@yahoogroups.com, Dan Bloomquist wrote:
>
> So, I'm still not clear if you can talk the microSD in classical SPI
> mode, doesn't look like it. (Got lines?)
>

------------------------------------

______________________________
Stellaris® MCU Family: New Parts, New Package, New Price.


(You need to be a member of msp430 -- send a blank email to msp430-subscribe@yahoogroups.com )

--- In m...@yahoogroups.com, Peter Grey wrote:
>
> I wish to have a MicroSD card on a data logger. Where do I find a
> datasheet on these and get an adaptor/connector to suit?
>
> TIA
>
> Peter
>

MicroSD are just like regular SD cards and the same SPI code will work with both. You can use any of the regular FAT code (including the FATLib library for the msp430 accompanying the Circuit Cellar Article a while back). The one gotcha is that some code, like FATLlib, uses the original MMC SPI specification. This will not work with many new SD and MicroSD cards and not at all with SDHC.

The biggest change is a clock speed limitation during initialization. There are other changes to the init sequence as well.

I have my own (doesn't everybody? :-) version of FAT and SPI code that works with V2.0 SD cards allthough it is currently set for use with something other than the MSP430. I currently have a project where I want to use it with a MSP430 but haven't quite gotten around to porting my code yet. But the changes will be minimal.

http://home.earthlink.net/~schultdw/logOmatic/LogomaticV4_0.tar.gz
For SD documentation you will want to read:

http://www.sdcard.org/developers/tech/sdcard/

Sparkfun has the required connectors and more information.

http://www.sparkfun.com/commerce/product_info.php?products_id=127

------------------------------------

______________________________
Stellaris® MCU Family: New Parts, New Package, New Price.


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harinnair wrote:
> I've used the open source (Sourceforge) EFSL FAT filesystem code and modified the physical interface layer to bit-bang the SPI interface to an SD card, it worked for me.
>
> You can find the modified EFSL code inside the sourcecode archive link at http://pixelproc.net/gpsvario.html
>
> The clk & data lines needed pullup resistors, can't remember any other gotchas.
>

I knew I read it somewhere.

"All cards must support all three modes, except for microSD where SPI is
optional."

Now, this page may be wrong in the usual wiki way so I guess it will
take more digging on my part.

Best, Dan.
> --- In m...@yahoogroups.com, Dan Bloomquist wrote:
>
>> So, I'm still not clear if you can talk the microSD in classical SPI
>> mode, doesn't look like it. (Got lines?)
>>
>>
> ------------------------------------



(You need to be a member of msp430 -- send a blank email to msp430-subscribe@yahoogroups.com )

It says SPI is optional for MicroSD, but I've tried quite a few cards, even cheap Chinese no names and every one has supported SPI access mode. So, it maybe not guaranteed, but in practice it will usually work.

I use the FatFS library for 2 other microcontrollers, but haven't ported it to MSP430, yet. It supports SD/SDHC.

http://elm-chan.org/fsw/ff/00index_e.html

A nice tutorial on SD/MMC card access:
http://elm-chan.org/docs/mmc/mmc_e.html

Mark Higgins.

----- Original Message -----
From: Dan Bloomquist
To: m...@yahoogroups.com
Sent: Saturday, October 10, 2009 1:05 PM
Subject: Re: [msp430] Re: Micro SD cards & protcol
harinnair wrote:
> I've used the open source (Sourceforge) EFSL FAT filesystem code and modified the physical interface layer to bit-bang the SPI interface to an SD card, it worked for me.
>
> You can find the modified EFSL code inside the sourcecode archive link at http://pixelproc.net/gpsvario.html
>
> The clk & data lines needed pullup resistors, can't remember any other gotchas.
>

I knew I read it somewhere.

"All cards must support all three modes, except for microSD where SPI is
optional."

Now, this page may be wrong in the usual wiki way so I guess it will
take more digging on my part.

Best, Dan.
> --- In m...@yahoogroups.com, Dan Bloomquist wrote:
>
>> So, I'm still not clear if you can talk the microSD in classical SPI
>> mode, doesn't look like it. (Got lines?)
>>
>>
>
>
>
>
> ------------------------------------
>
>
>
>



(You need to be a member of msp430 -- send a blank email to msp430-subscribe@yahoogroups.com )

Peter Grey wrote:
> I wish to have a MicroSD card on a data logger. Where do I find a
> datasheet on these and get an adaptor/connector to suit?
>
>
Here is what I did. I had a cheap USB card reader that went belly up,
perfect! So I ripped the card connector off the board and re mounted it
to my own board.



Here is a pretty nice paper I found and might be useful if you go SPI.



Best, Dan.

------------------------------------



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Mark Higgins wrote:
> It says SPI is optional for MicroSD, but I've tried quite a few cards, even cheap Chinese no names and every one has supported SPI access mode. So, it maybe not guaranteed, but in practice it will usually work.
>

Hi Mark,
Thanks, that is encouraging. I've had mixed feelings about going SPI
since I read that wiki page. It may be that because its 'cheap' to do,
SPI will never get obsoleted.
> I use the FatFS library for 2 other microcontrollers, but haven't ported it to MSP430, yet. It supports SD/SDHC.
>
> http://elm-chan.org/fsw/ff/00index_e.html
>

More mixed feelings. :)
Even though I'm using the 149 and 161x to develop code, I'm looking to
target devices with much less memory. I've got that code but intended to
use it as a guide to just create a file and write to it. I've been
looking at removable memory for a while but don't know where the lines
would be drawn yet.

Best, Dan.

------------------------------------



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At 02:21 AM 11/10/2009, you wrote:

Thanks to all on the input. It really helps. I have plenty to read! I
wish to use this in place of Flash memory such as the M25Pxx series
and AT45DBxxx series so I can have a larger memory. I am not
interested in a file system such as FAT32, etc. I just wish to treat
it like normal memory. I will use SPI. If I find anything interesting
I will post it. However, I need to wait on an order from a customer
before I go full steam ahead!!

Cheers
Peter

------------------------------------



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Dan Bloomquist wrote:
> Peter Grey wrote:
>
>> I wish to have a MicroSD card on a data logger. Where do I find a
>> datasheet on these and get an adaptor/connector to suit?
>>
>>
>>
> Here is what I did. I had a cheap USB card reader that went belly up,
> perfect! So I ripped the card connector off the board and re mounted it
> to my own board.
>
> Here is a pretty nice paper I found and might be useful if you go SPI.
>
>
>
Well I could not resist. The code in that pdf is not my style but it
compiled flawlessly, (one warning), in MSPGCC. I hook it all up and find
the FET can't supply the current for the card. So I moved power to pin
FET#4 and hooked up batteries. (3.2v). I don't know what I'm missing as
this gets me an unknown device. I can remove the bats and move back to
pin FET#2 and all is fine, so, I didn't blow anything. I'm just so close!

Peter,
If you don't need removable memory why not just use a serial eeprom?
They are really simple and cheap.

Best, Dan.

------------------------------------

______________________________
Stellaris® MCU Family: New Parts, New Package, New Price.


(You need to be a member of msp430 -- send a blank email to msp430-subscribe@yahoogroups.com )

At 10:41 AM 11/10/2009, you wrote:

Hi Dan,

I did look for a serial memory but could not see anything at 50
megabytes. They all seem to stop at 128megabits or less

Cheers

Peter
>Dan Bloomquist wrote:
> > Peter Grey wrote:
> >
> >> I wish to have a MicroSD card on a data logger. Where do I find a
> >> datasheet on these and get an adaptor/connector to suit?
> >>
> >>
> >>
> > Here is what I did. I had a cheap USB card reader that went belly up,
> > perfect! So I ripped the card connector off the board and re mounted it
> > to my own board.
> >
> >
> >
> > Here is a pretty nice paper I found and might be useful if you go SPI.
> >
> >
> >
>Well I could not resist. The code in that pdf is not my style but it
>compiled flawlessly, (one warning), in MSPGCC. I hook it all up and find
>the FET can't supply the current for the card. So I moved power to pin
>FET#4 and hooked up batteries. (3.2v). I don't know what I'm missing as
>this gets me an unknown device. I can remove the bats and move back to
>pin FET#2 and all is fine, so, I didn't blow anything. I'm just so close!
>
>Peter,
>If you don't need removable memory why not just use a serial eeprom?
>They are really simple and cheap.
>
>Best, Dan.
>
>------------------------------------



(You need to be a member of msp430 -- send a blank email to msp430-subscribe@yahoogroups.com )

Peter try this one:-

http://search.digikey.com/scripts/DkSearch/dksus.dll?Selection

A search of Digikey returns 26 entries (not all different of course) for
serial flash from 512Mbit up to 8Gbit, not all stocked, and the TSOP's
are larger than a microSD, but they are there if you need them

Al

Peter Grey wrote:
> At 10:41 AM 11/10/2009, you wrote:
>
> Hi Dan,
>
> I did look for a serial memory but could not see anything at 50
> megabytes. They all seem to stop at 128megabits or less
>
> Cheers
>
> Peter
>> Dan Bloomquist wrote:
>>> Peter Grey wrote:
>>>
>>>> I wish to have a MicroSD card on a data logger. Where do I find a
>>>> datasheet on these and get an adaptor/connector to suit?
>>>>
>>>>
>>>>
>>> Here is what I did. I had a cheap USB card reader that went belly up,
>>> perfect! So I ripped the card connector off the board and re mounted it
>>> to my own board.
>>>
>>>
>>>
>>> Here is a pretty nice paper I found and might be useful if you go SPI.
>>>
>>>
>>>
>> Well I could not resist. The code in that pdf is not my style but it
>> compiled flawlessly, (one warning), in MSPGCC. I hook it all up and find
>> the FET can't supply the current for the card. So I moved power to pin
>> FET#4 and hooked up batteries. (3.2v). I don't know what I'm missing as
>> this gets me an unknown device. I can remove the bats and move back to
>> pin FET#2 and all is fine, so, I didn't blow anything. I'm just so close!
>>
>> Peter,
>> If you don't need removable memory why not just use a serial eeprom?
>> They are really simple and cheap.
>>
>> Best, Dan.
>>
>> ------------------------------------

______________________________
Stellaris® MCU Family: New Parts, New Package, New Price.


(You need to be a member of msp430 -- send a blank email to msp430-subscribe@yahoogroups.com )

Dan Bloomquist wrote:
>> Here is a pretty nice paper I found and might be useful if you go SPI.
>>
>>
>>
>>

IT WORKS!
I'm doing it on uart1 I read the first sector. Numbers kick in at 446 as
expected and the block ends with: 0x55, 0xaa!!!

I have something very odd going on with my usb FET. I went in to scope
it because the voltage was low, 2.7v. There is a switcher driven
directly by a line from the msp430 and that line is dead, 0v. When I
hook the scope ground up the voltage goes up to 3.15v. The switcher is
still dead. But the voltage stays solid when I plug in the sd card now.
The scope ground is power ground and I'd assume the same as the box
ground. I haven't looked further.

I got this on ebay so I don't know its history. As I recall when I first
plugged it in I had to do a firmware download. Could it be the voltage
control code in the download was in error? Other wise it seems to work
fine. And with the extra ground I can read the sd card on internal power.

Best, Dan.

------------------------------------

______________________________
Stellaris® MCU Family: New Parts, New Package, New Price.


(You need to be a member of msp430 -- send a blank email to msp430-subscribe@yahoogroups.com )

At 03:15 PM 11/10/2009, you wrote:

Hi Al,

Thanks for that. I always look at Digikey and those 40pin TSSOP's are
the smallest I could see also. I tried Mouser and Jameco but it is
much the same. I will certainly try the MicroSd, if the guy gives me
the order to proceed!

Cheers

Peter
>Peter try this one:-
>
>http://search.digikey.com/scripts/DkSearch/dksus.dll?Selection
>
>A search of Digikey returns 26 entries (not all different of course) for
>serial flash from 512Mbit up to 8Gbit, not all stocked, and the TSOP's
>are larger than a microSD, but they are there if you need them
>
>Al
>
>Peter Grey wrote:
> > At 10:41 AM 11/10/2009, you wrote:
> >
> > Hi Dan,
> >
> > I did look for a serial memory but could not see anything at 50
> > megabytes. They all seem to stop at 128megabits or less
> >
> > Cheers
> >
> > Peter
> >> Dan Bloomquist wrote:
> >>> Peter Grey wrote:
> >>>
> >>>> I wish to have a MicroSD card on a data logger. Where do I find a
> >>>> datasheet on these and get an adaptor/connector to suit?
> >>>>
> >>>>
> >>>>
> >>> Here is what I did. I had a cheap USB card reader that went belly up,
> >>> perfect! So I ripped the card connector off the board and re mounted it
> >>> to my own board.
> >>>
> >>>
> >>>
> >>> Here is a pretty nice paper I found and might be useful if you go SPI.
> >>>
> >>>
>
> >>>
> >> Well I could not resist. The code in that pdf is not my style but it
> >> compiled flawlessly, (one warning), in MSPGCC. I hook it all up and find
> >> the FET can't supply the current for the card. So I moved power to pin
> >> FET#4 and hooked up batteries. (3.2v). I don't know what I'm missing as
> >> this gets me an unknown device. I can remove the bats and move back to
> >> pin FET#2 and all is fine, so, I didn't blow anything. I'm just so close!
> >>
> >> Peter,
> >> If you don't need removable memory why not just use a serial eeprom?
> >> They are really simple and cheap.
> >>
> >> Best, Dan.
> >>
> >>
> >>
> >> ------------------------------------
> >>
> >>
> >>
> >>



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Peter Grey wrote:
> At 03:15 PM 11/10/2009, you wrote:
>
> Hi Al,
>
> Thanks for that. I always look at Digikey and those 40pin TSSOP's are
> the smallest I could see also. I tried Mouser and Jameco but it is
> much the same. I will certainly try the MicroSd, if the guy gives me
> the order to proceed!
>
Hi Peter,
Go to digikey and search flash memory. You will get to a page that you
can apply filters to. I trimmed the filter to 32megs and 8 pin soic and
got five hits at ~$2.

I'd paste the URL but it is cookie and dll driven so it won't work.

Best, Dan.

------------------------------------



(You need to be a member of msp430 -- send a blank email to msp430-subscribe@yahoogroups.com )

Hi Dan, they're 32M BIT not BYTE, peters after 50MBYTE.

Al

Dan Bloomquist wrote:
> Peter Grey wrote:
>> At 03:15 PM 11/10/2009, you wrote:
>>
>> Hi Al,
>>
>> Thanks for that. I always look at Digikey and those 40pin TSSOP's are
>> the smallest I could see also. I tried Mouser and Jameco but it is
>> much the same. I will certainly try the MicroSd, if the guy gives me
>> the order to proceed!
>>
> Hi Peter,
> Go to digikey and search flash memory. You will get to a page that you
> can apply filters to. I trimmed the filter to 32megs and 8 pin soic and
> got five hits at ~$2.
>
> I'd paste the URL but it is cookie and dll driven so it won't work.
>
> Best, Dan.
>
> ------------------------------------



(You need to be a member of msp430 -- send a blank email to msp430-subscribe@yahoogroups.com )

OneStone wrote:
> Hi Dan, they're 32M BIT not BYTE, peters after 50MBYTE.
>

Thanks Al, head slap. And it looks hard to find serial at that size.
And sorry Peter, your solution does look good now.

Only thing I would consider, that the memory is removable. How did you
plan on moving this data?!?

Best, Dan.

------------------------------------

______________________________
Stellaris® MCU Family: New Parts, New Package, New Price.


(You need to be a member of msp430 -- send a blank email to msp430-subscribe@yahoogroups.com )

At 01:43 PM 12/10/2009, you wrote:

My loggers have a serial port on them and an interface cable between
the logger and PC. It takes a while. Thanks for the help.

Peter
>OneStone wrote:
> > Hi Dan, they're 32M BIT not BYTE, peters after 50MBYTE.
> >Thanks Al, head slap. And it looks hard to find serial at that size.
>And sorry Peter, your solution does look good now.
>
>Only thing I would consider, that the memory is removable. How did you
>plan on moving this data?!?
>
>Best, Dan.
>
>------------------------------------



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Peter Grey wrote:
> At 01:43 PM 12/10/2009, you wrote:
>
> My loggers have a serial port on them and an interface cable between
> the logger and PC. It takes a while....
Hi Peter,
So the only thing I can figure is this is a very short run project and
that becomes acceptable. But ~30 minutes to download when 'plug and
play' is available!?

I'll zip and send the code I have so far anytime you would like it.

Now that I'm on to it I'll be publishing code to deal with the card's
FAT. (time line undetermined.)

Mark,
I ran that code through my compiler and it crashed it!


But now that I can see removable out there, without SPI obsolescence, I
think I would peruse it. Did you have I serious intent to port that code
to the MSP?

Best, Dan.

------------------------------------



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At 03:11 PM 12/10/2009, you wrote:
Dan,

Some of my smaller loggers take over an hour to download. I am trying
to make them as small as possible to go on animals and birds. It is
sometimes difficult to get a connector onto the logger board due to
lack of space. Plug & Play is not a weight luxury I can afford in
most cases. It is usually not a problem. The customer sets it up and
goes off and has lunch or a cup of coffee or two.

Thanks

Peter
>Peter Grey wrote:
> > At 01:43 PM 12/10/2009, you wrote:
> >
> > My loggers have a serial port on them and an interface cable between
> > the logger and PC. It takes a while....
>Hi Peter,
>So the only thing I can figure is this is a very short run project and
>that becomes acceptable. But ~30 minutes to download when 'plug and
>play' is available!?
>
>I'll zip and send the code I have so far anytime you would like it.
>
> Now that I'm on to it I'll be publishing code to deal with the card's
>FAT. (time line undetermined.)
>
>Mark,
>I ran that code through my compiler and it crashed it!
>But now that I can see removable out there, without SPI obsolescence, I
>think I would peruse it. Did you have I serious intent to port that code
>to the MSP?
>
>Best, Dan.
>
>------------------------------------



(You need to be a member of msp430 -- send a blank email to msp430-subscribe@yahoogroups.com )

Hi,
I modified the code from TI that writes to SD card.
In a project that I made, the data was written on the card in raw format (no file system). After that I would take the SD card and, with a small program written in C#, download the data into my computer.
For what I needed I have created a small header but in your case it is not necessary.
If you need help or source code, please tell me.

With regards,
Dan Fat

________________________________
From: Peter Grey
To: m...@yahoogroups.com
Sent: Monday, October 12, 2009 10:40:19
Subject: Re: [msp430] Micro SD cards & protocol

At 03:11 PM 12/10/2009, you wrote:
Dan,

Some of my smaller loggers take over an hour to download. I am trying
to make them as small as possible to go on animals and birds. It is
sometimes difficult to get a connector onto the logger board due to
lack of space. Plug & Play is not a weight luxury I can afford in
most cases. It is usually not a problem. The customer sets it up and
goes off and has lunch or a cup of coffee or two.

Thanks

Peter
>Peter Grey wrote:
> > At 01:43 PM 12/10/2009, you wrote:
> >
> > My loggers have a serial port on them and an interface cable between
> > the logger and PC. It takes a while....
>Hi Peter,
>So the only thing I can figure is this is a very short run project and
>that becomes acceptable. But ~30 minutes to download when 'plug and
>play' is available!?
>
>I'll zip and send the code I have so far anytime you would like it.
>
> Now that I'm on to it I'll be publishing code to deal with the card's
>FAT. (time line undetermined. )
>
>Mark,
>I ran that code through my compiler and it crashed it!
>But now that I can see removable out there, without SPI obsolescence, I
>think I would peruse it. Did you have I serious intent to port that code
>to the MSP?
>
>Best, Dan.
>
>----------- --------- --------- -------



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At 07:08 PM 12/10/2009, you wrote:

Thanks for the offer. I will keep it in mind.

Peter
>Hi,
>I modified the code from TI that writes to SD card.
>In a project that I made, the data was written on the card in raw
>format (no file system). After that I would take the SD card and,
>with a small program written in C#, download the data into my computer.
>For what I needed I have created a small header but in your case it
>is not necessary.
>If you need help or source code, please tell me.
>
>With regards,
>Dan Fat
>________________________________
>From: Peter Grey
>To: m...@yahoogroups.com
>Sent: Monday, October 12, 2009 10:40:19
>Subject: Re: [msp430] Micro SD cards & protocol
>At 03:11 PM 12/10/2009, you wrote:
>Dan,
>
>Some of my smaller loggers take over an hour to download. I am trying
>to make them as small as possible to go on animals and birds. It is
>sometimes difficult to get a connector onto the logger board due to
>lack of space. Plug & Play is not a weight luxury I can afford in
>most cases. It is usually not a problem. The customer sets it up and
>goes off and has lunch or a cup of coffee or two.
>
>Thanks
>
>Peter
> >Peter Grey wrote:
> > > At 01:43 PM 12/10/2009, you wrote:
> > >
> > > My loggers have a serial port on them and an interface cable between
> > > the logger and PC. It takes a while....
> >Hi Peter,
> >So the only thing I can figure is this is a very short run project and
> >that becomes acceptable. But ~30 minutes to download when 'plug and
> >play' is available!?
> >
> >I'll zip and send the code I have so far anytime you would like it.
> >
> > Now that I'm on to it I'll be publishing code to deal with the card's
> >FAT. (time line undetermined. )
> >
> >Mark,
> >I ran that code through my compiler and it crashed it!
> >
> >
> >But now that I can see removable out there, without SPI obsolescence, I
> >think I would peruse it. Did you have I serious intent to port that code
> >to the MSP?
> >
> >Best, Dan.
> >
> >
> >
> >----------- --------- --------- -------
> >
> >
> >
> >



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