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Update Program from Card
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Matrixx

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Joined: 30 Nov 2005
Posts: 158

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PostPosted: Sun Mar 01, 2015 10:42 pm    Post subject: Reply with quote

Ok... I have it working as the M128.

Sorry, I'm still on tubes era... Embarassed


Loader size required: 4095 = 0xFFF


M64 flash size: 0x7FFF
M128/M1281 flash size: 0xFFFF
M256/2560 flash size: 0x1FFFF

Then, calculated bootloader start:

M64: 0x7FFF - 0xFFF = 0x7000
M128/M1281: 0xFFFF - 0xFFF = 0xF000
M256/2560: 0x1FFFF - 0xFFF = 0x1F000

Very Happy
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sackoizo

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Joined: 17 Feb 2015
Posts: 12

PostPosted: Fri Mar 27, 2015 12:35 pm    Post subject: Reply with quote

I need bootoader for ATXMEGA128a4u any help?
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njepsen

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Joined: 13 Aug 2007
Posts: 418

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PostPosted: Sat Jul 22, 2017 12:39 am    Post subject: Reply with quote

I am using a modified version of Josef's bootloader; I want to update the bootloader itself from an SD card.
I cant decide if this is possible or not, and if so, where to start.

(the reason for this is i want to post an SD card to a user many many hundreds of miles away, to update the bootloader)

neil

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jeremywilson

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Joined: 11 Jul 2011
Posts: 68
Location: United States

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PostPosted: Fri Mar 02, 2018 6:58 am    Post subject: Reply with quote

DOS_Boot2.bas works (according to serial port output) as far as loading the boot.hex into flash and renaming the file, but the flash program doesn't run - just keeps rebooting into the bootloader.

Please help!
Thanks!
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P_Santos

Bascom Member



Joined: 07 Jul 2011
Posts: 112

PostPosted: Wed Nov 24, 2021 12:53 pm    Post subject: Reply with quote

Hello,

Has anyone already a working Bootloader solution to update firmware trough sd card that support the Xmega384C3 chip?

Thanks in advance

Regards
P_Santos
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