PureBasic Forums - English

I run one program that opens the port, e.g. "/dev/ttyUSB0" and keeps it open. Then I run the second program, which also tries to open the "/dev/ttyUSB0" port: id = OpenSerialPort(#PB_Any, "/dev/ttyUSB0", ...) statement returns a non-zero value. But (what I didn't notice...

Fred, within a single application it is now fine - once a specific port is opened, it cannot be reopened without first closing it. Previously, I protected against this possibility in my application by creating a list of opened ports. Now I can skip making such a list. Unfortunately, I also run more ...

Fred,
of course I will check. Thank you.

Fred wrote: ↑Mon Feb 19, 2024 10:02 am Just waiting for you to report some more

Is there any chance to improve this:
https://www.purebasic.fr/english/viewtopic.php?p=605500

After searching the web, I found that in Linux the serial port needs to be locked using ioctl(fd, TIOCEXCL) and/or flock(fd, LOCK_EX | LOCK_NB). Unfortunately, I don't know how to do it in PB, and I don't know which header file contains the definition of TIOCEXCL.
Any idea, please?

Would anyone like to do this test? You only need one USB->RS232 converter to test this code: Debug OpenSerialPort(#PB_Any, "/dev/ttyUSB0", 1200, #PB_SerialPort_NoParity, 8, 1, #PB_SerialPort_NoHandshake, 256, 256) Debug OpenSerialPort(#PB_Any, "/dev/ttyUSB0", 1200, #PB_SerialPort...

In fact, the height of the control also increases slightly.

Shardik,
thanks for checking.
It seems the same problem can be seen in the PB IDE, e.g. menu "Compiler" - "Compiler Options" dialog.

After an item is added to combobox, its width is increased: OpenWindow(0, 100, 100, 300, 200, "Test") ComboBoxGadget(1, 50, 50, 150, 22) ComboBoxGadget(2, 50, 100, 150, 22) AddGadgetItem(2, -1, "") Repeat: Until #PB_Event3D_CloseWindow = WaitWindowEvent() Can anyone confirm the i...

Dear forum users, I noticed a strange operation of the OpenSerialPort() command. Execution of such code: Debug OpenSerialPort(#PB_Any, "/dev/ttyUSB0", 1200, #PB_SerialPort_NoParity, 8, 1, #PB_SerialPort_NoHandshake, 256, 256) Debug OpenSerialPort(#PB_Any, "/dev/ttyUSB0", 1200, #P...

technopol,

460800 bps works fine for me with a typical USB-RS485 dongle, no errors even with very long upload/receive streams (around 200 kbytes).

mk-soft, thanks for the answer. It works quite well on Windows, I thought Linux might as well. In my application, a very large part of the tasks must be performed without interruption, and the user interface unfortunately has its rights. I don't see any other way than using a thread. As for the debu...

Fred, thanks for the purebasic_gtk3! As I can see now, all I need to do is install only libgtk-3-dev (am I right?). Additionally opening multiple project files is lightning fast! Unfortunately, the debugger still doesn't work with threads as it should. The program correctly stops on a trap within th...

I see this thread has been revived, so I'll add something. I'm trying to use PB 6.01 beta in Mint Cinnamon 21.1 and debugger isn't working properly (built-in IDE and standalone). After trap or STOP stops execution and takes step (F8), the debugger loses control and the program stops responding. It i...

Axolotl, you are right: we need to use the right solution for the specific problem. To be honest - I use state machines very often, especially in the embedded applications where using an OS is not necessary. It is always worth getting to know a different point of view to learn something, especially ...