1## Example_SPI/ main.py
2## This is example for SPI with WPC DAQ Device with synchronous mode.
3## Copyright (c) 2023 WPC Systems Ltd.
4## All rights reserved.
5
6## Python
7import sys
8import os
9
10## Third party
11from PyQt5 import QtWidgets, QtGui
12from UI_design.Ui_example_GUI_SPI import Ui_MainWindow
13
14## WPC
15from wpcsys import pywpc
16
17WREN = 0x06
18WRITE = 0x02
19
20class MainWindow(QtWidgets.QMainWindow):
21 def __init__(self):
22 super(MainWindow, self).__init__()
23
24 ## UI initialize
25 self.ui = Ui_MainWindow()
26 self.ui.setupUi(self)
27
28 ## Get Python driver version
29 print(f'{pywpc.PKG_FULL_NAME} - Version {pywpc.__version__}')
30
31 ## Connection flag
32 self.connect_flag = 0
33
34 ## Handle declaration
35 self.dev = None
36
37 ## Material path
38 file_path = os.path.dirname(__file__)
39 self.trademark_path = file_path + "\Material\\trademark.jpg"
40 self.blue_led_path = file_path + "\Material\LED_blue.png"
41 self.red_led_path = file_path + "\Material\LED_red.png"
42 self.green_led_path = file_path + "\Material\LED_green.png"
43 self.gray_led_path = file_path + "\Material\LED_gray.png"
44
45 ## Set trademark & LED path
46 self.ui.lb_trademark.setPixmap(QtGui.QPixmap(self.trademark_path))
47 self.ui.lb_led.setPixmap(QtGui.QPixmap(self.gray_led_path))
48
49 ## Define callback events
50 self.ui.btn_connect.clicked.connect(self.connectEvent)
51 self.ui.btn_disconnect.clicked.connect(self.disconnectEvent)
52 self.ui.btn_write.clicked.connect(self.writeEvent)
53 self.ui.btn_read.clicked.connect(self.readEvent)
54 self.ui.btn_set.clicked.connect(self.setEvent)
55
56 def selectHandle(self):
57 handle_idx = int(self.ui.comboBox_handle.currentIndex())
58 if handle_idx == 0:
59 self.dev = pywpc.USBDAQF1D()
60 elif handle_idx == 1:
61 self.dev = pywpc.USBDAQF1AD()
62 elif handle_idx == 2:
63 self.dev = pywpc.USBDAQF1TD()
64 elif handle_idx == 3:
65 self.dev = pywpc.USBDAQF1RD()
66 elif handle_idx == 4:
67 self.dev = pywpc.USBDAQF1CD()
68 elif handle_idx == 5:
69 self.dev = pywpc.USBDAQF1AOD()
70
71 def updateParam(self):
72 ## DO port and pin
73 self.DO_port = 0
74 self.DO_index = [0] ## CS pin
75
76 ## Get IP or serial_number from GUI
77 self.ip = self.ui.lineEdit_IP.text()
78
79 ## Get port from GUI
80 self.port = int(self.ui.comboBox_port.currentIndex())+1
81
82 ## Get mode from GUI
83 self.mode = self.ui.comboBox_mode.currentIndex()
84
85 ## Get prescaler from GUI
86 self.prescaler = self.ui.comboBox_prescaler.currentIndex()
87
88 ## Get write (Hex) from GUI
89 data = self.ui.lineEdit_write.text()
90
91 ## Convert string to int list
92 self.write_data = self.converStrtoIntList(data)
93
94 def setEvent(self):
95 ## Update Param
96 self.updateParam()
97
98 ## Set SPI port and prescaler
99 status = self.dev.SPI_setPrescaler(self.port, self.prescaler)
100 print("SPI_setPrescaler status: ", status)
101
102 ## Set SPI port and mode
103 status = self.dev.SPI_setMode(self.port, self.mode)
104 print("SPI_setMode status: ", status)
105
106 def writeEvent(self):
107 ## Update Param
108 self.updateParam()
109
110 ## Set CS(pin0) to low
111 status = self.dev.DO_writePins(self.DO_port, self.DO_index, [0])
112 print("DO_writePins status: ", status)
113
114 ## Write WREN byte
115 status = self.dev.SPI_write(self.port, [WREN])
116 print("SPI_write status: ", status)
117
118 ## Set CS(pin0) to high
119 status = self.dev.DO_writePins(self.DO_port, self.DO_index, [1])
120 print("DO_writePins status: ", status)
121
122 ## Set CS(pin0) to low
123 status = self.dev.DO_writePins(self.DO_port, self.DO_index, [0])
124 print("DO_writePins status: ", status)
125
126 ## Set SPI port and write bytes
127 status = self.dev.SPI_write(self.port, self.write_data)
128 print("SPI_write status: ", status)
129
130 ## Set CS(pin0) to high
131 status = self.dev.DO_writePins(self.DO_port, self.DO_index, [1])
132 print("DO_writePins status: ", status)
133
134 def readEvent(self):
135 ## Update Param
136 self.updateParam()
137
138 ## Set CS(pin0) to low
139 status = self.dev.DO_writePins(self.DO_port, self.DO_index, [0])
140 print("DO_writePins status: ", status)
141
142 ## Set SPI port and read bytes
143 data = self.dev.SPI_readAndWrite(self.port, self.write_data)
144 data = ['{:02x}'.format(value) for value in data]
145 print("read data :", data)
146
147 ## Update data in GUI
148 self.ui.lineEdit_read.setText(str(data))
149
150 ## Set CS(pin0) to high
151 status = self.dev.DO_writePins(self.DO_port, self.DO_index, [1])
152 print("DO_writePins status: ", status)
153
154 def connectEvent(self):
155 if self.connect_flag == 1:
156 return
157
158 ## Select handle
159 self.selectHandle()
160
161 ## Update Param
162 self.updateParam()
163
164 ## Connect to device
165 try:
166 self.dev.connect(self.ip)
167 except pywpc.Error as err:
168 print("err: " + str(err))
169 return
170
171 ## Change LED status
172 self.ui.lb_led.setPixmap(QtGui.QPixmap(self.blue_led_path))
173
174 ## Change connection flag
175 self.connect_flag = 1
176
177 ## Open pin0 with digital output
178 status = self.dev.DO_openPins(self.DO_port, self.DO_index)
179 print("DO_openPins status: ", status)
180
181 ## Open SPI
182 status = self.dev.SPI_open(self.port)
183 print("SPI_open status: ", status)
184
185 ## Set CS(pin0) to high
186 status = self.dev.DO_writePins(self.DO_port, self.DO_index, [1])
187 print("DO_writePins status: ", status)
188
189 def disconnectEvent(self):
190 if self.connect_flag == 0:
191 return
192
193 ## Update Param
194 self.updateParam()
195
196 ## Close SPI port
197 status = self.dev.SPI_close(self.port)
198 print("SPI_close status: ", status)
199
200 ## Close pin0 with digital output
201 status = self.dev.DO_closePins(self.DO_port, self.DO_index)
202 print("DO_closePins status: ", status)
203
204 ## Disconnect device
205 self.dev.disconnect()
206
207 ## Change LED status
208 self.ui.lb_led.setPixmap(QtGui.QPixmap(self.green_led_path))
209
210 ## Change connection flag
211 self.connect_flag = 0
212
213 def closeEvent(self, event):
214 if self.dev is not None:
215 ## Disconnect device
216 self.dev.disconnect()
217
218 ## Release device handle
219 self.dev.close()
220
221 def converStrtoIntList(self, str_):
222 ## Split string by commas
223 write_data_strlist = str_.replace(' ','').split(',')
224
225 ## Convert string list to int list
226 write_data_int = []
227 for item in write_data_strlist:
228 write_data_int.append(int(item, 16))
229 return write_data_int
230
231if __name__ == "__main__":
232 app = QtWidgets.QApplication([])
233 WPC_main_ui = MainWindow()
234 WPC_main_ui.show()
235 sys.exit(app.exec_())
