Is it possible to program a new ATSAMA5D2x MPU over USB?

Log in or register to post comments
Go To Last Post
4 posts / 0 new
Author
Message
abin444
abin444's picture
Level: New Member
Joined: Wed. Feb 13, 2013
Posts: 5 View posts
#1
Posted by abin444: Mon. May 22, 2017 - 12:48 PM
  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

I am planning to use ATSAMA5D26 in one of my projects (I will be having a NAND flash also on the board). I don't have the luxury of any free SDIO/SD interface to boot the device from an SD card or eMMC. One option is to load the boot loader (uBoot ) over JTAG and use the TFTP to load the operating system, which in this case is a stripped down version of Linux. But it would be better if I can have everything done in single step, like over USB (I think JTAG is low to use for large files). Does ATSAMA5D2x MPUs support DFU? Is it possible to flash (I mean the boot loader as well as the OS) the ATSAMA5D2x in the factory over USB and a PC running SAM-BA software?

Thanks

Tags:

Atmel SMART ARM-based MCUs and MPUs, Atmel Cortex-A MPUs, SAM-BA, usb boot, atsama5d26
Top
Kartman
Kartman's picture
Level: 10k+ Postman
Joined: Thu. Dec 30, 2004
Posts: 24979 View posts
Location: Melbourne,Australia
Posted by Kartman: Tue. May 23, 2017 - 06:41 AM
  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 1

The samba doc says it supports the sama5 series. I don't think the a5 does dfu in samba mode. Note that you will need to customise the samba code in order to program your flash chip as they are not all the same.
I'd suggest having a good read of the relevant documentation just to be sure.
As well, it is not unreasonable to load megabytes of data via jtag.

Top
abin444
abin444's picture
Level: New Member
Joined: Wed. Feb 13, 2013
Posts: 5 View posts
Posted by abin444: Tue. May 23, 2017 - 07:18 AM (Reply to #2)
  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

Thank you Kartman. It was helpful.

It looks like there is no need to customize the SAM-BA code for SAMA5D2x.

https://www.at91.com/linux4sam/b...

Please correct me if I am wrong.

 

Top
Kartman
Kartman's picture
Level: 10k+ Postman
Joined: Thu. Dec 30, 2004
Posts: 24979 View posts
Location: Melbourne,Australia
Posted by Kartman: Tue. May 23, 2017 - 08:49 AM
  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 1

If you've used the same nand flash as the EK board, then you're ok. If you've used a different one you may need to make changes.

Top