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  • unknown
  • unknown
17 Aug 2025 22:06
Replied by unknown on topic getting started , latency and breakout board questions

getting started , latency and breakout board questions

Category: General LinuxCNC Questions

Logout out then log back in, then you'll be good for your permissions and group membership.
  • Chock
  • Chock
17 Aug 2025 21:38 - 17 Aug 2025 21:48
Replied by Chock on topic getting started , latency and breakout board questions

getting started , latency and breakout board questions

Category: General LinuxCNC Questions

Good afternoon Tommylight thanks, I tried something pretty similar to this with out the < > .

That was several tries back

i just tried it and i added the < > with my username in the middle of the<> and i got a
bash: syntax error near unexpected token 'newline'

next i tried without the < > and i got asked for my password,       that is good correct?

i made a typo next, trying the stty -F /dev/ttyS0

and on the 2nd try with the stty i got permission denied again.

if i make a typo do i lose my root access? and need to start over with dialout line ?

i tried the whole process starting with the  " ls " again,  no typos and still permission denied

Since the command line has my name twice that means i am logged in correct?   does that mean  i am logged in a both user and admin?
  • tommylight
  • tommylight's Avatar
17 Aug 2025 20:58
Replied by tommylight on topic getting started , latency and breakout board questions

getting started , latency and breakout board questions

Category: General LinuxCNC Questions

ls -l /dev/tty*
then
sudo usermod -a -G dialout <username>
replace "username" with your actual username on that pc
  • AkkiSan
  • AkkiSan
17 Aug 2025 20:52
Replied by AkkiSan on topic How to fix "Queue is not empty after probing"

How to fix "Queue is not empty after probing"

Category: General LinuxCNC Questions

A lot of things could go wrong there; why not check the "obvious error" ```[tm]``` first?  
Probably just a race condition?
[...]

if (settings->probe_flag) {
    int queue_empty = 0;
    int retry = 0;
    static int probe_count = 0;
    
    probe_count++;
    
    while ((queue_empty = GET_EXTERNAL_QUEUE_EMPTY()) == 0 && retry < 100) {
        esleep(0.010); 
        retry++;
    }
    
    if (retry > 0) {
        logDebug("probe #%d: waited %dms for empty queue (state: %d)", 
                probe_count, retry*10, queue_empty);
    }
    
    CHKS((queue_empty == 0),
         "NCE_QUEUE_IS_NOT_EMPTY_AFTER_PROBING (probe #%d after %dms)",
         probe_count, retry*10);

[...]


Out testing,
AS
 
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