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+from kivy.app import App
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+from kivy.uix.widget import Widget
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+from kivy.uix.button import Button
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+from kivy.uix.gridlayout import GridLayout
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+from kivy.uix.label import Label
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+from kivy.uix.textinput import TextInput
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+from kivy.lang import Builder
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+import asyncio
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+from bleak import BleakClient,BleakScanner
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+
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+# import json
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+
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+STM32_UUID = "00001101-0000-1000-8000-00805F9B34FB"
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+
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+class InfoWidget(Widget):
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+ # def __init__(self, **kwargs):
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+ # super(InfoWidget, self).__init__(**kwargs)
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+
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+
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+ async def discover_devices(self):
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+ self.size = (800,480)
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+ devices = await BleakScanner.discover()
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+ grid00 = GridLayout(cols=1,rows=2,width=self.width,height=self.height / 4)
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+ grid00.top = self.top
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+ self.add_widget(grid00)
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+ grid01 = GridLayout(cols=2,rows=1,width=grid00.width,height=grid00.height / 2)
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+ grid00.add_widget(grid01)
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+ grid01.add_widget(Label(text="Device Name:",width=grid00.width / 2,height=grid00.height / 2,font_size=50))
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+ deviceName = "HC-06"
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+ grid01.add_widget(TextInput(text=deviceName,width=grid00.width / 2,height=grid00.height / 2,font_size=40))
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+ connect_button = Button(text="Connect",width=grid00.width,height=grid00.height / 2,center_x=grid00.center_x,font_size=40)
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+ Builder.load_string('''
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+<Button>:
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+ id: connect_button
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+ on_touch_down: root.root.remove_widget(grid00)
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+ ''')
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+ grid00.add_widget(connect_button)
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+
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+ # for d in devices:
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+ # if d.name == deviceName:
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+ # await self.connect_and_receive(d.address)
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+ # self.add_widget(Label(text="Connected",width=self.width,height=self.height / 4))
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+ # break
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+ # grid1 = GridLayout(cols=2,rows=5,width=self.width,height=self.height)
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+ # self.add_widget(grid1)
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+ # for num,d in enumerate(devices):
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+ # button = Button(text=f"{d.name}")
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+ # button.height = grid1.height / 5
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+ # button.width = grid1.width / 2
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+ # button.on_touch_down = lambda instance, d=d: asyncio.run(self.connect_and_receive(d.address))
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+ # grid1.add_widget(button)
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+ # if num >= 9:
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+ # break
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+
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+ # async def connect_and_receive(self, address):
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+ # async with BleakClient(address) as client:
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+ # if await client.is_connected():
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+ # rawdata = await client.read_gatt_char(STM32_UUID)
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+ # data = rawdata.decode("utf-8")
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+ # if data.startswith("[") and data.endswith("]"):
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+ # list = json.loads(data)
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+ # info = "基波频率：" + str(list[0]) + "Hz\n" + \
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+ # "THD：" + str(list[6]) + "%\n" + \
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+ # "基波幅值：" + str(list[1]) + "V\n" + \
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+ # "二次谐波：" + str(list[2]) + "V\n" + \
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+ # "三次谐波：" + str(list[3]) + "V\n" + \
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+ # "四次谐波：" + str(list[4]) + "V\n" + \
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+ # "五次谐波：" + str(list[5]) + "V\n"
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+ # else:
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+ # info = "传输数据出错"
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+ # label = Label(text=info)
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+ # self.add_widget(label)
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+ # return
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+ # else:
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+ # print("Failed to connect to device.")
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+ # def debug(self):
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+ # # self.size = (800,480)
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+ # grid = GridLayout(cols=2,rows=4,width=self.width,height=self.height)
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+ # self.add_widget(grid)
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+ # for i in range(8):
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+ # button = Button(text=str(i))
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+ # button.width = grid.width / 2
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+ # button.height = grid.height / 4
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+ # grid.add_widget(button)
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+
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+class STI2021A(App):
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+ def build(self):
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+ info = InfoWidget()
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+ asyncio.run(info.discover_devices())
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+ # info.debug()
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+ return info
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+
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+
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+if __name__ == '__main__':
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+ STI2021A().run()
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