Serial connection does not work anymore

PicoCalc
1

hi, I finally got my PicoCalc some days ago and it is really fun. But now I got a problem I don’t understand. PicoCalc does not talk to me anymore- remotely.
Few days ago, I used picocalc /dev/ttyUSB0 and it worked; i could play with from my pc.
Now, same cable, same pc, i try it and it connects but I cannot type in anything.
I tested same cable and pc with an esp32 board board and it works.
I also tried to remove battery of the PicoCalc (even if I didn’t believe that this would have helped)

So, any ideas?

2

does anything show up if you try; dmesg | grep tty*

3

shure, even /dev/ttyUSB0 shows up.. If not, picocom wouldn’t try to connect. But it is connected.. anyway, seems that no data is sent or received.

4

I`v never used picocom before, have you tried something simpler like screen?
screen /dev/ttyACM0 115200 is what I use to get into mine remotely, just change yours to; screen /dev/ttyUSB0 115200 instead.
failing that have you got a windows PC you could try with Tera-Term?

5

A Windows what? :wink: It seems that, despite the information on the manual, only 115200 baud work.. but even this not always..
Nonetheless, I managed to upload a file via xmodem by using picocom

$ echo 'print "Hellorld"' > test.bas
$ sudo apt install picocom lszrz
$ picocom -b 115200 -s "sz -Xvka " /dev/ttyUSB0
> xmodem receive "B:/test.bas"
<CTRL-A><CTRL-S> (things get asked) ./test.bas
 (things happen)
> load "B:/test.bas"
> run
Hellorld
>
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