[Q] SD card bus on himalaya - MDA II, XDA II, 2060 General

Hi all.
Is it possible to use multiple Sd cards on hima?
I did`t find any product that would split Sd card slot like hub or something.
I read article where it states that with MMC bus it would be possible to use multiple cards.
So is it possible to do that on himalaya?
If possible I am planing to wire MicroSD adapter to 2 SD slots (from old SD card readers). Will I need something in between like resistor, power supply or something else? Will I need some kind of driver to separate those cards data?
How large is the risk of burning SD slot on himalaya or is there safe way to test it without damaging my phone?
Link to article:
http://www.embeddedrelated.com/usenet/embedded/show/69909-1.php
Sorry for bad eng. Thanks

Related

DUAL SD card mod, connecting two SD cards at the same time

As the title says, I'd like to connect to memory SD cards at the same time to the device.
I've read spec pages, and it seems the device supports two SD's at once (moreover, the SANDISK wifi+memory SD wouldnt work otherwise).
However, I'm not sure how WM OS supports two memory cards at once. how do the cards mount (how does it work on the dell x50 which has both sd and CF for example) one card mounts to /storage card , and the other ?
also, any ideas about the pinouts ? an SD card/SDIO have 9 pins, but if I'd like to connect more then one, do I connect both to the same pins ?

Mini SD with adapter help me

I buy a 2Gb mini sd with adapter, but when i insert the memory in my prophet, the memory is not appear in the memory manager. is not possible use a mini SD with the prophet and Magician?
net36854 said:
I buy a 2Gb mini sd with adapter, but when i insert the memory in my prophet, the memory is not appear in the memory manager. is not possible use a mini SD with the prophet and Magician?
Click to expand...
Click to collapse
Are you sure the card can be detected properly? do you have a sd card reader to see if windows can detect?
I don't have SD reader
No, i don't have a sd card reader to use with the computer to verify the card, but the sd card is a Kingstom standard mini sd card with him adapter to SD.
The card isn't reconigzed by the prophet and isn't reconigzed by the magician.
The type and size have problems with this models of XDA?
My guess is that the mini-sd to sd card adapter is busted. you should double check with another device to be sure. I doubt sd slot on the pda is busted (have you tried another sd card?). I've used a 2gig sandisk mini-sd car with an adapter in my dopod818pro no problems.
my miniSD adapter is a bit.. wacky. Try this.
Take both of them out.
Take the miniSD out of the adapter
Reinsert it, firmly but not too 'pushy'.
Now, the trick here, when you insert both of then into your phone, try not to push it on the miniSD, instead, push it on both side of the adaptor (eg ONLY touch the adapter when pushing into the phone, and balance it (left and right)).

Dual MiniSD I/O possible?

i recently stumbled on a thread on Hackaday, where there was one entry where he managed to piggy back the connection of the SD and hard wired it to a SD Wifi, leaving the SD slot open for a SD memory card (parallel connection).
The question is, is it possible to do the same on an Atom? or any PPC for that matter? Maybe, a dummy SD or minisd with two MiniSD2SD connectors (for holder) in parallel so you could connect a minisd memory on one and a minisd wifi on the other. I wonder if the parallel connection will work?
Also correct me if im wrong, but i read somewhere that the SDIO uses two modes of communication with the SD, one is serial i think and the other is direct or something, but the latter is much slower and only good for devices like wifi and stuff and the direct method is for memory. So saying that, i guess 2 Memory card is not possible, and only Device and Memory is quite plausible.
I hope its possible. Anyone care to enlighten the subject?
why do you need to install an sdio wifi card to your atom when it already has built-in wifi? Anyway, it would be better if someone can make a sd to usb converter. This way, we can expand the sd card capacity to that of a flash drive. or maybe we can expand the RAM by replacing it with a flash drive? Anyway, maybe an expert can give his 2 cents on this.

Sandisk 4Gb read-only on PC

I recently purchased a Sandisk 4Gb microsd card for use with the Tytn II. The card works correctly on the Tytn. I wanted to transfer a large file to the card by means of the card reader sddr-113 that came with the card. I plugged the microsd card into the sd adapter, put the latter into the card reader, and plugged the card reader into the usb port of the PC.
On trying to write the file to the card an error message popped up saying the card was read-only. I double-checked that the read-only tab on the sd adapter was in the correct position to enable writing but the error persisted. I formatted the card on the Tytn but to no avail. Sandisk support does not list any known issues.
Knowing that several users have purchased a similar card for the Tytn II, has anyone encountered such problems, and is there any fix/workaround? Thanks.
EDIT: Note that there is no problem reading files from the card on the PC. Transfer speed in this case seems quite good. MY PC is WinXP.
You might check the microSD adapter. The adapters that are a std sized SD card have the small "read only" switch on the side of the card, you may have bumped it. Mine isn't even labeled, it should be switched forward, towards the gold contacts.
Good luck.
RemE said:
You might check the microSD adapter. The adapters that are a std sized SD card have the small "read only" switch on the side of the card, you may have bumped it. Mine isn't even labeled, it should be switched forward, towards the gold contacts.
Good luck.
Click to expand...
Click to collapse
As I said, I checked that the read-only switch was in the right position. That said the adapter may be defective, and I'll try to put the microSd into another adapter. However any news from others with possible the same problem will serve to see if mine is an isolated case or not.
Oops, sorry, yup I'd try a different adapter, they're pretty cheap/fragile. I have only seen this once, on a friends card. The tip is that the native microSd card is writeable in another device so it really points to the adapter.
I am also experiencing this issue with the exact same card & adapter.
GRRR it really take age to copy data across active sync...
Sandisk 2 & 4 GB card
fun_key said:
I am also experiencing this issue with the exact same card & adapter.
GRRR it really take age to copy data across active sync...
Click to expand...
Click to collapse
I had this problem as well. I later found that my PC wanted me to format the card when reading it with the adapter. Luckily my card didn't have anything important on it at the time. When I pulled the card to use it in my Tilt, the new device couldn't read it either.
I was able to use the card & adapter with a program found in a post on this forum to repair my corrupted card.

Help with Error Code 19 when writing to SD Card.

First of all, I am a newbie. I have searched the boards and can't find the answer.
I am trying to get my Nook Color back to stock so I can return to Barnes & Noble. When I tried to write the TWRP File to my SD Card, I received Error 19, media is write protected. I have formatted my SD card and keep getting the error.
Anyone know a solution?
Is the microSD in an adapter to (for example) full size SD?
SD Card
MISRy said:
Is the microSD in an adapter to (for example) full size SD?
Click to expand...
Click to collapse
Yes, I use the Adaptor to put the SD card into my laptop slot.
A) It's always better to use an external reader than a built-in slot
B) There should be a little slidey tab on the side of the SD adapter, slide it to it's other position.
SD Card
MISRy said:
A) It's always better to use an external reader than a built-in slot
B) There should be a little slidey tab on the side of the SD adapter, slide it to it's other position.
Click to expand...
Click to collapse
I tried sliding it to the other position but it didn't make a difference. I bought a new SD card at lunch. I will try it tonight.
Seriously think about one of those $4.99 USB stick adapters as well. You'd be surprised. Just like the magic going to a Sandisk brand uSD card will do, going to an external reader will do the same.

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