可以写出详细的代码嘛?
时间: 2024-03-15 07:44:17 浏览: 20
当然可以,请参考以下代码:
```
import asyncio
from PySide2.QtCore import QObject, Signal, Slot
from PySide2.QtWidgets import QApplication, QWidget, QComboBox, QPushButton, QVBoxLayout
import visa
class Instrument:
def __init__(self, resource_name):
self.resource_name = resource_name
self.rm = visa.ResourceManager()
self.inst = None
async def connect(self):
self.inst = await asyncio.to_thread(self.rm.open_resource, self.resource_name)
async def disconnect(self):
await asyncio.to_thread(self.inst.close)
self.inst = None
async def query_idn(self):
return await asyncio.to_thread(self.inst.query, "*IDN?")
class MainProgram(QObject):
instruments_updated = Signal(list)
def __init__(self):
super().__init__()
self.instruments = []
async def refresh_instruments(self):
resources = await asyncio.to_thread(visa.ResourceManager().list_resources)
new_instruments = [Instrument(resource) for resource in resources]
for instrument in self.instruments:
if instrument not in new_instruments:
await instrument.disconnect()
for instrument in new_instruments:
if instrument not in self.instruments:
await instrument.connect()
self.instruments = new_instruments
idns = await asyncio.gather(*[instrument.query_idn() for instrument in self.instruments])
self.instruments_updated.emit(idns)
class UI(QWidget):
def __init__(self):
super().__init__()
self.combo_box = QComboBox()
self.refresh_button = QPushButton("Refresh")
layout = QVBoxLayout()
layout.addWidget(self.combo_box)
layout.addWidget(self.refresh_button)
self.setLayout(layout)
class Controller:
def __init__(self):
self.app = QApplication([])
self.ui = UI()
self.main_program = MainProgram()
self.ui.refresh_button.clicked.connect(self.main_program.refresh_instruments)
self.main_program.instruments_updated.connect(self.update_instruments)
@Slot(list)
def update_instruments(self, idns):
self.ui.combo_box.clear()
self.ui.combo_box.addItems(idns)
def run(self):
self.ui.show()
asyncio.ensure_future(self.main_program.refresh_instruments())
self.app.exec_()
if __name__ == "__main__":
controller = Controller()
controller.run()
```
这段代码实现了一个简单的UI界面,包含一个ComboBox和一个刷新按钮,点击刷新按钮后,ComboBox会列出所有连接的GPIB仪器的IDN。代码中使用了异步编程方法,使用了PyVISA库来连接GPIB仪器。在MainProgram类中,refresh_instruments方法用于查询所有已连接的仪器的IDN,并将其发送到instruments_updated信号中。在UI类中,update_instruments槽函数用于更新ComboBox的内容。在Controller类中,将UI界面和MainProgram类连接起来,实现了整个程序的控制逻辑。
希望这个代码能够帮助到你!