A hardware sollution for the TM4C1294XL would be to get a SD or MicroSD boosterpack.
(Since it has 2 booster pack headers, and booster packs can usually stack, this should not preclude using additional booster packs, if desired.)
Of course you could use a SD breakout board, the booster packs just have the advantage of neater wiring.
You can load code into NVM using the recv command - save the file on eLua's write once file system.
(Which I have tested on Stellaris LP.)
Yes, it would be possible to implement a flash drive on the processors flash.
There is some example code for mass storage device in the Tivaware libraries.
One could also borrow from this example
http://forum.stellarisiti.com/topic/377-usb-mass-storage-bootloader/(Obviously would not be a boot loader, but could do that for loading eLua programs).
I believe one of the other ARM processors has this feature already (think it is one of the lpc ones, mbed maybe?)
By the way, for those interested there is a binary for the TM4C1294XL posted in the forum I mentioned a few days ago.
It is mostly untested, but I have one report that it does boot and gets as far as letting you enter programs.
> ----- Original Message -----
> From: Pink Boy
> Sent: 04/02/14 03:58 PM
> To:
[hidden email]
> Subject: [eLua-dev] Flash Drives
>
> I've been poking at eLua a bit on an AT91SAM7X256-EK dev board from Olimex.
>
> It appears that on this platform the MMC card isn't supported by eLua. Since the part is a bit old I'm suspecting that it's probably not worth supporting at this point. And then looking at the TI EX-TM4C1294XL dev board from TI, it doesn't have an SD/MMC card interface at all.
>
> Unless I'm mistaken, that limits you to downloading code via the 'recv' command are creating a ROM image with your code on those board, no ability to upload code into NVM.
>
> Which if you gotten this far, would it be possible to implement a 'flash drive' using the section of the processors Flash? I know all the ATMEL parts support bootloaders. Only difficulty is when writing a page of memory you need to make sure you aren't executing out of flash while programming
>
>
> Does this make sense as feature for the eLua shell? Or is it unpossible?
>
>
> Matt
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