2021A/main.py

from kivy.app import App
from kivy.uix.widget import Widget
from kivy.uix.button import Button
from kivy.properties import (
    StringProperty,NumericProperty,
)
from kivy.clock import Clock

import asyncio
from bleak import BleakClient,BleakScanner

import json

STM32_UUID = "00001101-0000-1000-8000-00805F9B34FB"

class InfoWidget(Widget): 
    info = StringProperty("")

    def __init__(self, **kwargs):
        super(InfoWidget, self).__init__(**kwargs)

    #     asyncio.run(self.discover_devices())

    # async def discover_devices(self):
    #     devices = await BleakScanner.discover()
    #     for d in devices:
    #         button = Button(text=f"{d.address}: {d.name}")
    #         button.bind(on_press=lambda instance, d=d: asyncio.run(self.connect_and_receive(d.address)))
    #         self.add_widget(button)

    # async def connect_and_receive(self, address):
    #     async with BleakClient(address) as client:
    #         if await client.is_connected():
    #             rawdata = await client.read_gatt_char()
    #             data = rawdata.decode("utf-8")
    #             if data.startswith("[") and data.endswith("]"):
    #                 list = json.loads(data)
    #                 self.info = "基波频率：" + str(list[0]) + "Hz\n" + \
    #                             "THD：" + str(list[6]) + "%\n" + \
    #                             "基波幅值：" + str(list[1]) + "V\n" + \
    #                             "二次谐波：" + str(list[2]) + "V\n" + \
    #                             "三次谐波：" + str(list[3]) + "V\n" + \
    #                             "四次谐波：" + str(list[4]) + "V\n" + \
    #                             "五次谐波：" + str(list[5]) + "V\n"
    #             else:
    #                 self.info = "传输数据出错"
    #                 return 
    #         else:
    #             print("Failed to connect to device.")
    def debug(self):
        for i in range(6):
            button = Button(text=str(i) + "!!!!!!")
            self.add_widget(button)

class STI2021A(App):
    def build(self):
        info = InfoWidget()
        info.debug()
        return info


if __name__ == '__main__':
    STI2021A().run()