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Dinosaur

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Joined: 12/08/2011
Location: Australia
Posts: 311

Posted: 03:12am 05 Dec 2023

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Hi All

Trying to transfer .bas program from Rpi Pico back to a Linux PC.
I am at a loss (having never used Xmodem or TFTP before) as to the steps to achieve
a transfer.
So, from the MMBasic manual it seems easy to set up:
I have my Linux PC connected via a Terminal in which I type:
XModem send "Myfile.bas"

After which it tries to connect to a server.

If I open a program called Minicom it reports an error
Device /dev/ttyACM0 is locked.

which it is, because the terminal window is using it.

I am sure I am missing something very simple, but can't get my head around using the usb
connection to provide a Terminal for the Pico and at the same time get a file transfer happening.

If you do this everyday without thinking about it , would love to hear how.

EDIT:The manual states:

Quote A TFTP server on the WebMite is automatically enabled when you are connected to a WiFi network so nothing
is needed there.

however when I type TFTP -i 192.168.0.101 PUT "MyFile.bas" it responds with unknown command.Similarly when I just enter TFTP.
Edited 2023-12-05 13:44 by Dinosaur

Regards
Hervey Bay Qld.

vegipete

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Joined: 29/01/2013
Location: Canada
Posts: 1110

Posted: 04:51am 05 Dec 2023

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list all

Visit Vegipete's *Mite Library for cool programs.

Dinosaur

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Joined: 12/08/2011
Location: Australia
Posts: 311

Posted: 05:04am 05 Dec 2023

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Hi All

Using Konsole in Linux and then List All, then Select all, Save as.
That's how I got it to work.
KISS principle I guess

Regards
Hervey Bay Qld.

Geoffg

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Joined: 06/06/2011
Location: Australia
Posts: 3200

Posted: 06:12am 05 Dec 2023

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Dinosaur said when I type TFTP -i 192.168.0.101 PUT "MyFile.bas" it responds with unknown command. Similarly when I just enter TFTP.

The PicoMite is the server. You need to enter that command on the client (ie, your Linux desktop or laptop) but, because you are getting the file, you use: TFTP -i 192.168.0.101 GET "MyFile.bas"

Geoff

Geoff Graham - http://geoffg.net

Dinosaur

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Joined: 12/08/2011
Location: Australia
Posts: 311

Posted: 06:24am 05 Dec 2023

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Hi All

Thanks for that Geoff, but what is required at the Pico end.?
Does it respond to the request without any input from me ?

Regards
Hervey Bay Qld.

phil99

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Joined: 11/02/2018
Location: Australia
Posts: 2143

Posted: 06:31am 05 Dec 2023

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Try it!
If the file is there it will get got.

TassyJim

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Joined: 07/08/2011
Location: Australia
Posts: 6104

Posted: 07:18am 05 Dec 2023

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TFTP is running in the background on the WEBmite so you can GET a file while your main program is off doing it's own thing.

Very handy.

Note: You cannot use TFTP via the USB connection. It only works with TCPIP.

Jim
Edited 2023-12-05 17:21 by TassyJim

VK7JH
MMedit MMBasic Help

Dinosaur

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Joined: 12/08/2011
Location: Australia
Posts: 311

Posted: 10:07am 05 Dec 2023

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Hi All

Even though I have another way of doing this, I need to complete this
to know how and when it does work.

I quit out of the running program on the Pico.
Then on the Rpi-Zero I did:
TFTP -v
TFTP>
Trace
Got "Packet Tracing On."
TFTP>Get MyFile.bas
received DATA <block=1, 0 bytes
tftp>

Checked the file created and it is empty (0 bytes long)

However on the Pico:
TFTP request to read ascii file : MyFile.bas
sent RRQ <file=MyFile.bas,mode=netascii>
TFTP transfer complete.

So where did I go wrong ?

Regards
Hervey Bay Qld.

JohnS
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Joined: 18/11/2011
Location: United Kingdom
Posts: 3819

Posted: 10:48am 05 Dec 2023

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Dinosaur said Trying to transfer .bas program from Rpi Pico back to a Linux PC.
I am at a loss (having never used Xmodem or TFTP before) as to the steps to achieve
a transfer.

I have my Linux PC connected via a Terminal in which I type:
XModem send "Myfile.bas"

That would _send_ from Linux. I think you want to receive there...

I wonder, too, if doing a send that didn't complete will have damaged the file on the Pico? I believe not but be sure to check.

John
Edited 2023-12-05 20:52 by JohnS

TassyJim

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Location: Australia
Posts: 6104

Posted: 10:58am 05 Dec 2023

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Try binary mode. ASCII can be strange at times.

VK7JH
MMedit MMBasic Help

Dinosaur

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Joined: 12/08/2011
Location: Australia
Posts: 311

Posted: 09:10pm 05 Dec 2023

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Hi All

Hate it when you Log in, start typing, then go looking for info, then finish your typing and post.
Only to find out you have been logged out without any notice and you have to do it all again.

As a reminder:
Rpi Pico on Hotspot to Rpi Zero with Debian Linux.

Tried every combination of TFTP with ,-v ,Trace ,Binary , ascii, netascii , get File
in upper lower case.

Saved file to Flash location 1
Changed network from Hotspot to my local Wifi.
Changed link from Pico to my Desktop (Debian)
Checked permissions so all are allowed.
Ping on IP to prove it's alive.

So, other than one question, I am looking for other suggestions.
Can I even send the one and only executable file from the prompt ?

All of them report at the Pico end that the send was completed.
At the Client end : Data <Block=1 , 0 Bytes.

Regards
Hervey Bay Qld.

TassyJim

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Joined: 07/08/2011
Location: Australia
Posts: 6104

Posted: 09:53pm 05 Dec 2023

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Connect to the WEBmite with your terminal program of choice.
On the pico,
LIST ALL
In your terminal program,
do whatever you have to do to save the listing.

Note: you may have to correct some wordwrap if you have long lines in the listing.

Jim

VK7JH
MMedit MMBasic Help

TassyJim

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Joined: 07/08/2011
Location: Australia
Posts: 6104

Posted: 01:14am 06 Dec 2023

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If you want to persevere with TFTP
This is the command I used for MMEdit/MMCC before I incorporated it into MMEdit with my own code.
The Windows TFTP wouldn't overwrite existing files on the PC which is a pain so I rolled my own.

The Linux commandline:

tftp -m binary %IP% -c get %RemoteFile% %LocalFile%

%IP% etc are replaced with the relevant values.

Jim

VK7JH
MMedit MMBasic Help

Dinosaur

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Joined: 12/08/2011
Location: Australia
Posts: 311

Posted: 01:32am 06 Dec 2023

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Hi All

Thanks Jim, BUT still the same problem.
Thought it may have to with joining 'dialout' group , but to no avail.

I would like to persevere as there must be a solution, as I think the problem is with Linux.

Have Googled with a lot of results on TFTP 0 length files, but usually to do with permissions.

Regards
Hervey Bay Qld.

TassyJim

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Joined: 07/08/2011
Location: Australia
Posts: 6104

Posted: 02:25am 06 Dec 2023

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Use Wireshark or similar on the Linux PC to see what is happening.

There are a few different incarnations of TFTP for Linux and I had to find the best one but that was only to get the command line working from a shell script.

Jim

VK7JH
MMedit MMBasic Help

TheMonkeys

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Joined: 15/12/2022
Location: Australia
Posts: 59

Posted: 04:53am 06 Dec 2023

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Hi all,

Firstly, permissions.

As root, you may need to:
chmod 666 /dev/ttyACM0

Secondly, tftp under Linux is pretty limited.

Try atftp (apt get atftp)
It allows putting/getting from the command line
and has tab command and filename completion and

command history

in interactive mode

Thirdly, try (from the command prompt):

Save "current.bas"

Then grab it using your browser (I have an php script for sending and retrieving a list of files).

Cheers,

Chris.

Dinosaur

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Joined: 12/08/2011
Location: Australia
Posts: 311

Posted: 06:36am 06 Dec 2023

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Hi All

Thanks for that Chris, it would not work until your last suggestion of Save "Myfile.bas"
on the Pico, and then running atftp on the Rpi-Zero.

Well done, will try to automate that.

Many thanks for all the help in this thread.

EDIT: Worth Noting that TFTP works as well, as long as you Save "Myfile.bas".
Which I believe was the problem all along.
But ATFTP is a better choice.
Edited 2023-12-06 17:59 by Dinosaur

Regards
Hervey Bay Qld.

JohnS
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Joined: 18/11/2011
Location: United Kingdom
Posts: 3819

Posted: 09:35am 06 Dec 2023

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TheMonkeys said Firstly, permissions.

As root, you may need to:
chmod 666 /dev/ttyACM0

Only do that for testing!!

If it's "needed" (i.e. the test works after you do that but didn't work before), you have a problem such as not being a member of group dialout or not having an appropriate udev rule.

John

robert.rozee
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Joined: 31/12/2012
Location: New Zealand
Posts: 2350

Posted: 01:31pm 06 Dec 2023

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i've always found it sufficient to do:

sudo usermod -a -G DIALOUT $USER

and thereafter all serial ports are usable. i run Linux Mint XFCE.

if wanting to use xmodem, you might like to give GFXterm a try:
https://github.com/robert-rozee/GFXterm/tree/main/binaries

GFXterm allows access to xmodem by just pressing F11 (upload) or F12 (download) at the command prompt. these only work with the 'main' basic program, not named files or numbered flash slots.

cheers,
rob :-)

Dinosaur

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Joined: 12/08/2011
Location: Australia
Posts: 311

Posted: 07:18pm 06 Dec 2023

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Hi All

Quote i've always found it sufficient to do:
sudo usermod -a -G DIALOUT $USER

I did mention in the posts above that I tried that.
What i find more interesting is that each time the Pico replied with "Send Completed" when in fact the client got zero bytes. Yet doing a "Save" solved the problem, indicating to me that
the problem was in fact at the Pico end.
Was there a zero bytes long file at the location for it to reply with "Send Completed" ?
Or is there an unidentified problem that should have replied with "File not found" ?

Regards
Hervey Bay Qld.

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