DO test panel

DO_gui.PNG 

  1##  Example_digital_output/ main.py
  2##  This is example for digital output with WPC DAQ Device with synchronous mode.
  3##  Copyright (c) 2023 WPC Systems Ltd.
  4##  All rights reserved.
  5
  6## Python
  7import os
  8import sys
  9
 10## Third party
 11from PyQt5 import QtWidgets, QtGui
 12from PyQt5.QtWidgets import QMessageBox
 13from UI_design.Ui_example_GUI_DO import Ui_MainWindow
 14
 15## WPC
 16from wpcsys import pywpc
 17
 18class MainWindow(QtWidgets.QMainWindow):
 19    def __init__(self):
 20        super(MainWindow, self).__init__()
 21
 22        ## UI initialize
 23        self.ui = Ui_MainWindow()
 24        self.ui.setupUi(self)
 25
 26        ## Get Python driver version
 27        print(f'{pywpc.PKG_FULL_NAME} - Version {pywpc.__version__}')
 28
 29        ## Initialize parameters
 30        self.state_cal = 255
 31
 32        ## Connection flag
 33        self.connect_flag = 0
 34
 35        ## Handle declaration
 36        self.dev = None
 37
 38        ## Material path
 39        file_path = os.path.dirname(__file__)
 40        self.trademark_path = file_path + "\Material\\trademark.jpg"
 41        self.blue_led_path = file_path + "\Material\LED_blue.png"
 42        self.red_led_path = file_path + "\Material\LED_red.png"
 43        self.green_led_path = file_path + "\Material\LED_green.png"
 44        self.gray_led_path = file_path + "\Material\LED_gray.png"
 45        self.switch_blue_path = file_path + "\Material\switch_blue.png"
 46        self.switch_gray_path = file_path + "\Material\switch_gray.png"
 47
 48        ## Convert backward slash to forward slash
 49        self.switch_blue_path = self.switch_blue_path.replace('\\', '/')
 50        self.switch_gray_path = self.switch_gray_path.replace('\\', '/')
 51
 52        ## Set trademark & LED path
 53        self.ui.lb_trademark.setPixmap(QtGui.QPixmap(self.trademark_path))
 54        self.ui.lb_led.setPixmap(QtGui.QPixmap(self.gray_led_path))
 55
 56        ## Define callback events
 57        self.ui.btn_connect.clicked.connect(self.connectEvent)
 58        self.ui.btn_disconnect.clicked.connect(self.disconnectEvent)
 59        for i in range(8):
 60            obj_chbox_state = getattr(self.ui, 'checkbox_state%d' %i)
 61            obj_chbox_state.stateChanged.connect(self.stateDOEvent)
 62            obj_chbox_state.setStyleSheet("QCheckBox::indicator{ width: 60px;height: 60px;} QCheckBox::indicator:unchecked {image: url("+self.switch_gray_path+");} QCheckBox::indicator:checked {image: url("+self.switch_blue_path+");}")
 63
 64    def selectHandle(self):
 65        handle_idx = int(self.ui.comboBox_handle.currentIndex())
 66        if handle_idx == 0:
 67            self.dev = pywpc.EthanD()
 68        elif handle_idx == 1:
 69            self.dev = pywpc.USBDAQF1D()
 70        elif handle_idx == 2:
 71            self.dev = pywpc.USBDAQF1DSNK()
 72        elif handle_idx == 3:
 73            self.dev = pywpc.USBDAQF1AD()
 74        elif handle_idx == 4:
 75            self.dev = pywpc.USBDAQF1TD()
 76        elif handle_idx == 5:
 77            self.dev = pywpc.USBDAQF1RD()
 78        elif handle_idx == 6:
 79            self.dev = pywpc.USBDAQF1CD()
 80        elif handle_idx == 7:
 81            self.dev = pywpc.USBDAQF1AOD()
 82
 83    def updateParam(self):
 84        ## Get IP or serial_number from GUI
 85        self.ip = self.ui.lineEdit_IP.text()
 86
 87        ## Get port from GUI
 88        self.port = int(self.ui.comboBox_port.currentIndex())
 89
 90    def stateDOEvent(self):
 91        ## Check connection status
 92        if self.checkConnectionStatus() == False:
 93            return
 94
 95        ## Initialize parameter
 96        self.state_cal = 0
 97
 98        ## Update Param
 99        self.updateParam()
100
101        ## Calculate state
102        for i in range (8):
103            obj_chbox_state = getattr(self.ui, 'checkbox_state%d' % i)
104            state = obj_chbox_state.isChecked()
105            self.state_cal += int(state) << i
106
107        ## Write DO state to MCU
108        self.dev.DO_writePort(self.port, self.state_cal)
109
110    def connectEvent(self):
111        if self.connect_flag == 1:
112            return
113
114        ## Select handle
115        self.selectHandle()
116
117        ## Update Param
118        self.updateParam()
119
120        ## Connect to device
121        try:
122            self.dev.connect(self.ip)
123        except pywpc.Error as err:
124            print("err: " + str(err))
125            return
126
127        ## Change LED status
128        self.ui.lb_led.setPixmap(QtGui.QPixmap(self.blue_led_path))
129
130        ## Change connection flag
131        self.connect_flag = 1
132
133        ## Open all DO port
134        for i in range(4):
135            status = self.dev.DO_openPort(i)
136            print(f"DO_openPort{i} status: {status}")
137
138    def disconnectEvent(self):
139        if self.connect_flag == 0:
140            return
141
142        ## Close DO port
143        for i in range(4):
144            status = self.dev.DO_closePort(i)
145            print(f"DO_closePort{i} status: {status}")
146
147        ## Disconnect device
148        self.dev.disconnect()
149
150        ## Change LED status
151        self.ui.lb_led.setPixmap(QtGui.QPixmap(self.gray_led_path))
152
153        ## Change connection flag
154        self.connect_flag = 0
155
156    def closeEvent(self, event):
157        if self.dev is not None:
158            ## Disconnect device
159            self.dev.disconnect()
160
161            ## Release device handle
162            self.dev.close()
163
164    def checkConnectionStatus(self):
165        if self.connect_flag == 0:
166            QMessageBox.information(self, "Error Messages", "Please connect server first.", QMessageBox.Ok)
167            return False
168        else:
169            return True
170
171if __name__ == "__main__":
172    app = QtWidgets.QApplication([])
173    WPC_main_ui = MainWindow()
174    WPC_main_ui.show()
175    sys.exit(app.exec_())