ums command doesnt work

[Romsub]

Hi, 

I have a Warp board connected through the interposer and I am trying to update the kernel image. 

In uboot prompt, when I type the following command, it never returns. 

$ ums 0 mmc 0 

UMS: LUN 0, dev 0, hwpart 0, sector 0x0, count 0x748000 

The command keeps running but never returns. fatls is able to list the files in the mmc. 

$ fatls mmc 0 

4 file(s), 1 dir(s) 

7455416 zimage

1138   boot

….. 

We have been using the WiFi/ssh to transfer new images into the MMC device so far but the latest patch has corrupted the WiFi. So we are looking for other ways to copy files into the mmc. Is there any other method we can use ? 

Cheers

Rams 

[Diego Rondini]

Hi Ramya,

In data lunedì 5 giugno 2017 16:31:14 CEST, Romsub ha scritto:
> Hi,
>
> I have a Warp board connected through the interposer and I am trying to
> update the kernel image.
>
> In uboot prompt, when I type the following command, it never returns.
>
> $ ums 0 mmc 0
> UMS: LUN 0, dev 0, hwpart 0, sector 0x0, count 0x748000
>
> The command keeps running but never returns. fatls is able to list the
> files in the mmc.
>
> $ fatls mmc 0
>
> 4 file(s), 1 dir(s)
>
> 7455416 zimage
> 1138 boot
> …..

That's correct, the command makes the device act as a USB memory until you
press Ctrl+C to interrupt the command.
Make sure you have both interposer and the warp_0x01 board connected via USB
to the PC before giving the ums command. After a couple of seconds you should
see the 4GB eMMC storage exposed as a USB memory to your PC.

Bests,
Diego

[Romsub]

Thanks for the quick response, Diego. That makes sense to why the command never returns. Also, I didnt have the warp's usb connected to the pc, thats why it didnt work earlier I think. 

It works great now, thanks. 

Cheers

Rams