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Linux - Embedded & Single-board computer This forum is for the discussion of Linux on both embedded devices and single-board computers (such as the Raspberry Pi, BeagleBoard and PandaBoard). Discussions involving Arduino, plug computers and other micro-controller like devices are also welcome.

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Old 08-23-2017, 01:24 AM   #1
GeneCode
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Barebox on Phytec usb drive detection


I am using Phytec as a "CPU" module and has USB port connected. On the bootloader, it uses Barebox, then the OS runs busybox. On busybox this USB drive works fine. But when I am on barebox the usb is not detecting.

In barebox doc, it says to use command "usb" but I am only getting:
USB: scanning bus for devices...
0 USB Device(s) found


I am quite new to Linux and embedded, any help would be appreciated.
 
Old 08-23-2017, 02:11 PM   #2
business_kid
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You haven't anything loaded, even a kernel, when barebox is running. So you're down to what capabilities the Phytec board has built in. The old adage stands:
Quote:
When all else fails, read the instructions
How does the manual say the phytec board should boot?
 
Old 08-27-2017, 09:08 PM   #3
GeneCode
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Quote:
Originally Posted by business_kid View Post
You haven't anything loaded, even a kernel, when barebox is running. So you're down to what capabilities the Phytec board has built in. The old adage stands:

How does the manual say the phytec board should boot?
I just got an answer from Phytec that the barebox version im running does not support usb.
so that's that :\
 
Old 08-27-2017, 10:14 PM   #4
jefro
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Thanks for the update.

When they mean bare box they really mean it I guess. Must be micro OS.
 
Old 08-28-2017, 12:09 AM   #5
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It's a bootloader. Tho grub/efi is sort of a "micro OS"
 
Old 08-28-2017, 04:05 AM   #6
business_kid
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before usb, we used to use eproms & sdcards on embedded stuff. Eproms were 8 bit, but you could parallel them (bits 0-7 & 8-15). Did Phytec tell you what exactly the thing did support?
 
Old 08-28-2017, 11:08 PM   #7
GeneCode
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Originally Posted by business_kid View Post
before usb, we used to use eproms & sdcards on embedded stuff. Eproms were 8 bit, but you could parallel them (bits 0-7 & 8-15). Did Phytec tell you what exactly the thing did support?
Yep. The barebox version im using only supports sd card. So we're going to use that for now.
Their latest barebox version do support usb though. We are considering to update to latest version soon.
 
  


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