def openfile_dialog(self):
try:
self.file, _ = QFileDialog.getOpenFileName(self, 'Open', 'C:\'',
"Excel(*.xlsx *.xls)")
print(self.file)
if self.file:
# Enable the Button
self.pushButton_ok.setEnabled(True)
except FileNotFoundError:
QMessageBox.Critical(self, 'File Not Found',
'Selected File Could Not Be Found!',
QMessageBox.Ok, QMessageBox.Ok)
except Exception as e:
QMessageBox.Critical(self, 'Exception!', str(e), QMessageBox.Ok,
QMessageBox.Ok)
def open_close(self, btn_sta):
if btn_sta == True:
try:
input('输入参数 COM 115200')
print(int(self.comboBox_2.currentText()))
self.ser = serial.Serial(self.comboBox.currentText(),
int(self.comboBox_2.currentText()),
timeout=0.1)
except:
QMessageBox.Critical(self, 'pycom', '没有可用的串口或者当前的串口被占用')
return None
#字符间隔超时设置
self.ser.interCharTimeout = 0.001
#1ms的测试周期
self.timer.start(2)
self.pushButton_2.setText('关闭串口')
print('打开！')
else:
self.timer_send.stop()
self.timer.stop()
try:
#关闭串口
self.ser.close()
except:
QMessageBox.critical(self, 'pycom', '关闭串口失败')
return None
self.ser = None
self.pushButton_2.setText('打开串口')
print('关闭')