Hello,
I have a question about the behaviour of the halui bit pins and would
like to confirm that I understand the code correctly. I could not answer
my question from the halui documentation.
Do these pins activate on both a rising and a falling edge ?
It like to use the input pin halui.program.pause to pause a running
program if I get a signal that might indicate that the material sheet
*might* have moved and the operator needs to check.
Having a cursory look at the linuxcnc source code I suspect the halui
pins come from linuxcnc-dev/src/emc/usr_intf/halui.cc
And in halui.cc these line (with lines numbers):
1114 static int sendProgramPause()
1115 {
1116 EMC_TASK_PLAN_PAUSE emc_task_plan_pause_msg;
1117
1118 return emcCommandSend(emc_task_plan_pause_msg);
...
1544 static int check_bit_changed(bool halpin, bool &newpin)
1545 {
1546 if (halpin != newpin) {
1547 newpin = halpin;
1548 return halpin;
1549 }
1550 return 0;
1551 }
...
1654 if (check_bit_changed(new_halui_data.program_pause,
old_halui_data.program_pause) != 0)
1655 sendProgramPause();
That line 1654 looks to me as if both edges would trigger the msg
emc_task_plan_pause_msg to be send.
Is that correct ?
Thank you
BR
Max.
------------------------------------------------------------------------------
Announcing the Oxford Dictionaries API! The API offers world-renowned
dictionary content that is easy and intuitive to access. Sign up for an
account today to start using our lexical data to power your apps and
projects. Get started today and enter our developer competition.
http://sdm.link/oxford
_______________________________________________
Emc-users mailing list
Emc-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/emc-users
