class Main(Ui_Widget, QtWidgets.QMainWindow):
def __init__(self, parent=None):
super(Main, self).__init__(parent)
self.setupUi(self)
self.setWindowIcon(QtGui.QIcon('F:\\QT\\tool-2\\fang.png'))
self.setWindowTitle('第二版串口小工具V0.0.1')
#串口无效
self.ser = 0
self.send_num = 0
self.lineEdit.setText(str(self.send_num))
self.receive_num = 0
self.textEdit.setText(str(self.receive_num))
# 显示发送与接收的字符数量
dis = '发送：' + '{:d}'.format(self.send_num) + ' 接收:' + '{:d}'.format(
self.receive_num)
self.statusBar().showMessage(dis)
def init(self):
self.refresh()
# 波特率控件
self.comboBox_2.addItem('115200')
self.comboBox_2.addItem('57600')
self.comboBox_2.addItem('56000')
self.comboBox_2.addItem('38400')
self.comboBox_2.addItem('19200')
self.comboBox_2.addItem('14400')
self.comboBox_2.addItem('9600')
self.comboBox_2.addItem('4800')
self.comboBox_2.addItem('2400')
self.comboBox_2.addItem('1200')
# 数据位控件
self.comboBox_3.addItem('8')
self.comboBox_3.addItem('7')
self.comboBox_3.addItem('6')
self.comboBox_3.addItem('5')
# 停止位控件
self.comboBox_4.addItem('1')
self.comboBox_4.addItem('1.5')
self.comboBox_4.addItem('2')
# 校验位控件
self.comboBox_5.addItem('NONE')
self.comboBox_5.addItem('ODD')
self.comboBox_5.addItem('EVEN')
#对testEdit进行事件过滤
self.textEdit.installEventFilter(self)
#实例化一个定时器
self.timer = QTimer(self)
self.timer_send = QTimer(self)
#定时发送
self.timer_send.timeout().connect(self.send)
#定时器调用读取串口接收数
self.timer.timeout().connect(self.recv)
#发送数据按钮
self.pushButton.clicked.connect(self.send)
#打开关闭串口按钮
self.pushButton_2.clicked.connect(self.open_close)
#刷新串口外设按钮
self.pushButton_4.clicked.connect(self.refresh)
#清除窗口
self.pushButton_3.clicked.connect(self.clear)
#定时发送
self.checkBox_4.clicked.connect(self.send_timer_box)
#刷新一下串口
def refresh(self):
#查询可用的串口
plist = list(serial.tools.list_ports.comports())
if len(plist) <= 0:
print("没有扫描到客户端口连接")
else:
plist_0 = list(plist[0])
serialName = plist_0[0]
serialFd = serial.Serial(serialName, 115200, timeout=0.5)
print('可用端口名称》》'), serialFd.name
def eventFilter(self, Obj, event):
if event.type() == event.KeyPress:
if self.ser != None:
char = event.text()
num = self.ser.write(char.encode('utf-8'))
self.send_num = self.send_num + num
dis = '发送：' + '{:d}'.format(
self.send_num) + '接收：' + '{:d}'.format(self.receive_num)
self.statusBar().showMessage(dis)
else:
pass
return True
else:
return False
def closeEvent(self, e):
self.timer_send.stop()
self.timer.stop()
if self.ser != None:
self.ser.close()
self.ser = None
def send_timer_box(self):
if self.checkBox_4.checkState():
time = self.lineEdit_2.text()
try:
time_val = int(time, 10)
except ValueError:
QMessageBox.critical(self, 'pycom', '请输入有效的定时时间！')
return None
if time_val == 0:
QMessageBox.critical(self, 'pycom', '定时时间必须大于零！')
return None
self.timer_send.start(time_val)
else:
self.timer_send.stop()
def clear(self):
self.textEdit.clear()
self.send_num = 0
self.receive_num = 0
dis = '发送：' + '{:d}'.format(self.send_num) + '接收：' + '{:d}'.format(
self.receive_num)
self.statusBar().showMessage(dis)
#串口接收数据处理
def recv(self):
try:
num = self.ser.inWaiting()
except:
self.timer_send.stop()
self.timer.stop()
self.ser.close()
self.ser = None
self.pushButton_2.setChecked(False)
self.pushButton_2.setText('打开串口')
print('Serial ERROR')
return None
if num > 0:
data = self.ser.reade(num)
#打印输出数据
print(data)
num = len(data)
#十六进制显示
if self.checkBox_3.checkState():
out_s = ""
for i in range(0, len(data)):
out_s = out_s + '{:02X}'.format(data[i]) + ''
self.textEdit.initPainter(out_s)
else:
self.textEdit.initPainter(data.decode('iso-8859-1'))
self.receive_num = self.receive_num + num
dis = '发送：' + '{:d}'.format(self.send_num) + '接收：' + '{:d}'.format(
self.receive_num)
self.statusBar().showMessage(dis)
#获得光标
textCursor = self.textEdit.textCursor()
textCursor.movePosition(textCursor.End)
#设置光标到text中去
self.textEdit.setTextCursor(textCursor)
else:
pass
#串口发送数据
def send(self):
if self.ser != None:
input_s = self.lineEdit.text()
if input_s != '':
#发送字符
if (self.checkBox.checkState() == False):
if self.checkBox_2.checkState():
#发送新行
input_s = input_s + '\r\n'
input_s = input_s.encode('utf-8')
else:
input_s = input_s.strip() #删除前后的空格
send_list = []
while input_s != '':
try:
num = int(input_s[0:2], 16)
except ValueError:
print('提示HEX数据错误')
QMessageBox.critical(self, 'pycom',
'请输入十六进制数据，以空格分开！')
return None
input_s = input_s[2:]
input_s = input_s.strip()
#添加到发送列表中
self.send_list.append(num)
input_s = bytes(self.send_list)
print(input_s)
#发送数据
try:
num = self.lineEdit.ser.write(input_s)
except:
self.timer_send.stop()
self.timer.stop()
#串口拔出错误，关闭定时器
self.ser.close()
self.ser = None
#设置为打开状态
self.pushButton_2.setChecked(False)
self.pushButton_2.setText('打开串口')
print('串口输入数据错误')
return None
self.send_num = self.send_num + num
dis = '发送：' + '{:d}'.format(
self.send_num) + '接收：' + '{:d}'.format(
self.receive_num)
self.statusBar().showMessage(dis)
print('输入数据完成')
else:
print('没有数据输入')
else:
self.timer_send.stop()
QMessageBox.critical(self, 'pycom', '请打开串口')
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')
