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Forum Index : Microcontroller and PC projects : File odd behavior tftp mmb4w

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crez

Senior Member

Joined: 24/10/2012
Location: Australia
Posts: 159

Posted: 07:52am 15 Nov 2026

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Hi
I am creating a log file which consists of 4 bytes indicating the file size, then little-endian 16 bit signed integers from then on. Created on Webmite 2350a, 6.03.

I transfer these to the PC using command line "tftp -i xxxx get" command. MMB4W (used as a graphing tool) will not open the file. I open the file using HxD hex editor and then 'save as' to a different file name. MMB4W will open the new file. HxD hex editor has a compare function, and says the original and new file are the same.

I just tried copying the original file in the command prompt and that also produces a version that MMB4W is happy to read, but renaming the file does not.

On a different pico I was saving the same file type to an SD card and moving them to the PC that way without problems.

Any ideas what is going on?

crez

Senior Member

Joined: 24/10/2012
Location: Australia
Posts: 159

Posted: 08:16am 15 Nov 2026

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UPDATE

I tried using tftp 192.168.... instead of tftp -i 192.168.... and that seems to work. Now I'll do some reading to find out why!

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