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Thread: serial port terminal using PyQT and PySerial

  1. #1
    Join Date
    Jul 2011
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    Qt products
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    Default serial port terminal using PyQT and PySerial

    I am trying to build a serial port terminal using PyQT and PySerial. I am facing a problem in calling a variable list from one function to another. I am passing the available com ports to a list (comports) and populating the QCombobox of available com ports. and when the required com port is selected from QCombobox it is sending the index of the com port from the list.however when i am trying to access the list in an another function(connect to port) it is giving an error(TypeError: 'list' object is not callable).


    Qt Code:
    1. import sys
    2. import serial
    3. import re, itertools
    4. import _winreg as winreg
    5. from PyQt4 import QtCore, QtGui
    6. from datalogger_gui import Ui_Form
    7.  
    8.  
    9. global ser,num,serportnum,comports
    10. comports=[]
    11. class MyForm(QtGui.QMainWindow):
    12. def __init__(self, parent=None):
    13. QtGui.QWidget.__init__(self, parent)
    14. self.ui = Ui_Form()
    15. self.ui.setupUi(self)
    16. QtCore.QObject.connect(self.ui.scan, QtCore.SIGNAL("clicked()"),self.enumerate_serial_ports)
    17. QtCore.QObject.connect(self.ui.connect, QtCore.SIGNAL("clicked()"),self.connect_to_port)
    18. QtCore.QObject.connect(self.ui.disconnect, QtCore.SIGNAL("clicked()"),self.disconnect_from_port)
    19. QtCore.QObject.connect(self.ui.comdropdown, QtCore.SIGNAL('activated(int)'),self.connect_to_port)
    20. # QtCore.QObject.connect(self.ui.comdropdown, QtCore.SIGNAL('activated(int)'),self.set_baudrate)
    21.  
    22.  
    23.  
    24.  
    25. def disconnect_from_port(self):
    26. ser.close()
    27. def enumerate_serial_ports(self):
    28.  
    29. path = 'HARDWARE\\DEVICEMAP\\SERIALCOMM'
    30. try:
    31. key = winreg.OpenKey(winreg.HKEY_LOCAL_MACHINE, path)
    32. except WindowsError:
    33. raise IterationError
    34. #self.ui.statustextEdit.append('ports')
    35. for i in itertools.count():
    36. try:
    37. val = winreg.EnumValue(key, i)
    38. self.ui.statustextEdit.append(str(val[1]))
    39. comports.append(str(val[1]))
    40. except EnvironmentError:
    41. break
    42. self.ui.comdropdown.addItems(comports)
    43. BAUDRATES=list()
    44. BAUDRATES =[50, 75, 110, 134, 150, 200, 300, 600, 1200, 1800, 2400, 4800,
    45. 9600, 19200, 38400, 57600, 115200]
    46. self.ui.bauddropdown.addItems(BAUDRATES)
    47. #def set_baudrate(self,baud):
    48. def connect_to_port(self,num):
    49. portno=comports(num)
    50. ser=serial.Serial(portno,1200,timeout=0)
    51. self.ui.statustextEdit.append('connected')
    52. self.ui.statustextEdit.append(str(num))
    53.  
    54. if __name__ == "__main__":
    55. app = QtGui.QApplication(sys.argv)
    56. myapp = MyForm()
    57. myapp.show()
    58. sys.exit(app.exec_())
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    Last edited by bishop; 18th July 2011 at 13:24.

  2. #2
    Join Date
    Oct 2017
    Posts
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    Qt products
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    Platforms
    Windows

    Default Re: serial port terminal using PyQT and PySerial

    Hello

    please provide the file" datalogger_gui.py" so that it can be tested.

    Thanks
    Kane

  3. #3
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    Alameda, CA, USA
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    Qt products
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    Default Re: serial port terminal using PyQT and PySerial

    please provide the file" datalogger_gui.py" so that it can be tested.
    You can't be serious. The original post is more than 6 years old!
    <=== The Great Pumpkin says ===>
    Please use CODE tags when posting source code so it is more readable. Click "Go Advanced" and then the "#" icon to insert the tags. Paste your code between them.

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