I try port reading and displaying in widgets.Well, I try to demostrate the problem during the next simplified example:
- 1. use Win32::SerialPort 0.09;
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2. use Tk;
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3.
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4. $mw=MainWindow->new();
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5.
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6. $mw->maxsize(600,470);
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7. $mw->minsize(600,470);
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8.
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9. ########################### widgets #######################x
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10. $d1=0.000;
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11. $e1=$mw->Entry(-width => 10,
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12. -textvariable => \$d1); #here iwant display the data from port
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13. $e1->place(-x =>100, -y =>100);
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14.
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15.
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16. $g2 = $mw->Button(-text => "Start read",
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17. -command => sub{ &read} #here i start the first read
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18. );
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19. $g2->place(-x => 240, -y => 100);
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20. ######################### Port Object#########################
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21. unless ($soros_port = Win32::SerialPort->new ('com1')) {
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22. printf "Nem tudtam megnyitni a soros portot!\n";
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23. exit 1;
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24.
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25. $soros_port->baudrate(9600) || die "rossz BAUD";
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26. $soros_port->parity('even') || die "rossz Parias";
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27. $soros_port->databits(8) || die "rossz Adatbit";
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28. $soros_port->stopbits(1) || die "rossz Stopbit";
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29. $soros_port->buffers(4096,4096) || die "rossz Buffer";
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30. $soros_port->handshake("none") || die "rossz Handshake";
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31. ################################################## ########
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32. MainLoop();
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33.
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34. sub read #the function go back whit the data freshing the $e1 widgets
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35. {
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36. while(1)
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37. {
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38. ($count_in, $d1) = $soros_port->read(1) or die "itten";
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39. if($count_in!=0) {last;}
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40. }
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41. }
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42. ################################################## #########
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How can after the return of " sub read" (so refreshing the widget)
fast and automatically call the "sub read" again and again?->so can I continous displaying the data from port (the repeat are to slow->1ms)
