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SD Card Implementation. Advice requested
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James Carter
#1 Posted : Monday, April 23, 2012 3:06:32 PM(UTC)
James Carter

Rank: Tinkerer

Joined: 7/22/2011(UTC)
Posts: 1

Hello NETMF Guys,


 


  I am attempting to add SD Card support to my LPC1788 Cortex-M3 port. I am having difficulty in seeing where abouts to inject my low level SD Card code support.


 


  I can see I have included FS_config_stubs.cpp in my PAL. However this seems to want to mount volumes when the device initializes, whereas I wish to support hot swapping SD cards.


 


  I would appreciate any pointers on how to get the RemovableMedia events working. How do I post to these events from my driver, and should I implement a volume in 'FS_MountRemovableVolumes'?


 


  I could not find a port with this implemented in the PAL for me to take a look at. Rather - I can see other examples of using BlockStorage on internal FLASH to mount a 'Volume' but I was not able to see any 'RemoveableVolumes'. Perhaps I shall try to mount my FLASH as a volume first.


 


Many Thanks,
James Carter
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Lorenzo Tessiore
#2 Posted : Monday, April 23, 2012 11:27:21 PM(UTC)
Lorenzo Tessiore

Rank: Tinkerer

Joined: 2/1/2010(UTC)
Posts: 36

Both teh SAM9261_EK and the iMXS solution implement Sd card insert/eject.


check those solutions configuration code under teh respective DeviceCode directory and the SD_BL_Config.cpp driver


 


 


Regards


Lorenzo Tessiore
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James Carter
#3 Posted : Tuesday, April 24, 2012 6:04:34 AM(UTC)
James Carter

Rank: Tinkerer

Joined: 7/22/2011(UTC)
Posts: 1
Hello Lorenzo
Thank you, I shall check those solutions and hopefully glean some useful information regarding implementation.
Kind Regards,
James Carter
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James Carter
#4 Posted : Wednesday, April 25, 2012 1:27:41 PM(UTC)
James Carter

Rank: Tinkerer

Joined: 7/22/2011(UTC)
Posts: 1
Hello Lorenzo,

It appears that both of these examples only include standard Volumes (such as their internal or external Flash) and not removable SD Cards.

Am I missing something here?

James
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Lorenzo Tessiore
#5 Posted : Wednesday, April 25, 2012 4:00:09 PM(UTC)
Lorenzo Tessiore

Rank: Tinkerer

Joined: 2/1/2010(UTC)
Posts: 36

this is what I see in my PK:


 


E:\src\client_v4_3_xbox\Solutions\SAM9261_EK\DeviceCode\Blockstorage>dir /ad
 Volume in drive E is Data
 Volume Serial Number is A2BF-6F8C


 Directory of E:\src\client_v4_3_xbox\Solutions\SAM9261_EK\DeviceCode\Blockstorage


11/18/2011  12:17 PM    <DIR>          .
11/18/2011  12:17 PM    <DIR>          ..
11/18/2011  12:17 PM    <DIR>          addDevices
11/18/2011  12:17 PM    <DIR>          K9F2G_8_BS
11/18/2011  12:17 PM    <DIR>          SD
               0 File(s)              0 bytes
               5 Dir(s)  406,836,940,800 bytes free


 


 


do you have that too?


 


 


Lorenzo
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James Carter
#6 Posted : Monday, April 30, 2012 7:23:27 AM(UTC)
James Carter

Rank: Tinkerer

Joined: 7/22/2011(UTC)
Posts: 1
Hi Lorenzo,

I understand a bit more now - I had not realised the SD Cards were treated as Blockstorage devices...

Thanks,
James
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