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KenH
Newbie

Joined: 06/02/2022
Location: United Kingdom
Posts: 13

Posted: 01:55pm 06 Feb 2022

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Hi

I received a Pi Pico yesterday and have loaded PicoMite version 5.0703.

The PicoMite is sending a "Make Cursor Visible" command ([?25h) to the console every 30 seconds unless there is traffic to the console.

I guess this is not obvious if your terminal program is VT100 / VT220 compatible as this will just be taken as a command sequence, but is a problem with a simple terminal emulator such as mine.

See results below.

Regards

Ken

> print MM.ver
5.0703
>
>
> [?25h[?25h[?25h[?25h[?25h[?25h[?25h[?25h[?25h[?25h[?25h[?25h[?25h
>
> do:pause 15000:print "OK":loop
OK
OK
OK
OK
OK
>
> do:pause 45000:print " OK":loop
[?25h OK
[?25h OK
[?25h OK
[?25h OK
>
> do:pause 120000:print " OK":loop
[?25h[?25h[?25h[?25h OK
[?25h[?25h[?25h[?25h OK
>
>

matherp
Guru

Joined: 11/12/2012
Location: United Kingdom
Posts: 10619

Posted: 01:57pm 06 Feb 2022

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This is something you will need to handle. Without occasional output the TinyUSB stack used seems to timeout and drop the USB connection. The escape sequence is used as a benign way to keep the connection alive

KenH
Newbie

Joined: 06/02/2022
Location: United Kingdom
Posts: 13

Posted: 02:15pm 06 Feb 2022

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Yes, I sort of guessed that was the reason.

I'll just have to modify my terminal program to suit.

Regards

Ken

robert.rozee
Guru

Joined: 31/12/2012
Location: New Zealand
Posts: 2466

Posted: 02:18pm 06 Feb 2022

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hi Ken,
welcome to the forum. what you are seeing is a known problem.

if you are running linux or windows, you can download GFXterm from here:
http://www.thebackshed.com/docregister/ViewDoc.asp?DocID=22

this is a simple terminal emulator (a single .exe file) that supports the VT codes sent by the pico version of MMbasic. if you are running a mac, you'll need to compile the GFXterm source.

peter: have you tried just sending a null (chr$(0)) instead? most terminal programs, and indeed most terminals, should just ignore this.

cheers,
rob :-)

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