debug

buildozer.spec

@@ -37,7 +37,7 @@ version = 1.0
 
 # (list) Application requirements
 # comma separated e.g. requirements = sqlite3,kivy
-requirements = python3,kivy,bleak,asyncio
+requirements = python3,kivy,bleak
 
 # (str) Custom source folders for requirements
 # Sets custom source for any requirements with recipes

main.py

@@ -2,11 +2,9 @@ from kivy.app import App
 from kivy.uix.widget import Widget
 from kivy.uix.button import Button
 from kivy.uix.gridlayout import GridLayout
-from kivy.properties import (
-    StringProperty,NumericProperty,
-)
-from kivy.clock import Clock
-
+from kivy.uix.label import Label
+from kivy.uix.textinput import TextInput
+from kivy.lang import Builder
 import asyncio
 from bleak import BleakClient,BleakScanner
 
@@ -15,39 +13,66 @@ import json
 STM32_UUID = "00001101-0000-1000-8000-00805F9B34FB"
 
 class InfoWidget(Widget): 
-    info = StringProperty("")
-
     def __init__(self, **kwargs):
         super(InfoWidget, self).__init__(**kwargs)
+        self.size = (800,480)
+        asyncio.run(self.discover_devices())
 
-    #     asyncio.run(self.discover_devices())
+    async def discover_devices(self):
+        devices = await BleakScanner.discover()
+        grid00 = GridLayout(cols=1,rows=2,width=self.width,height=self.height / 4)
+        grid00.top = self.top
+        self.add_widget(grid00)
+        grid01 = GridLayout(cols=2,rows=1,width=grid00.width,height=grid00.height / 2)
+        grid00.add_widget(grid01)
+        grid01.add_widget(Label(text="Device Name:",width=grid00.width / 2,height=grid00.height / 2,font_size=50))
+        deviceName = "HC-06"
+        grid01.add_widget(TextInput(text=deviceName,width=grid00.width / 2,height=grid00.height / 2,font_size=40))
+        connect_button = Button(text="Connect",width=grid00.width,height=grid00.height / 2,center_x=grid00.center_x,font_size=40)
+        Builder.load_string('''
+<Button>:
+    id: connect_button
+    on_touch_down: root.root.remove_widget(grid00)
+                            ''')
+        grid00.add_widget(connect_button)
 
-    # 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)
+        for d in devices:
+            if d.name == deviceName:
+                await self.connect_and_receive(d.address)
+                self.add_widget(Label(text="Connected",width=self.width,height=self.height / 4))
+                break
+        # grid1 = GridLayout(cols=2,rows=5,width=self.width,height=self.height)
+        # self.add_widget(grid1)
+        # for num,d in enumerate(devices):
+        #     button = Button(text=f"{d.name}")
+        #     button.height = grid1.height / 5
+        #     button.width = grid1.width / 2
+        #     button.on_touch_down = lambda instance, d=d: asyncio.run(self.connect_and_receive(d.address))
+        #     grid1.add_widget(button)
+        #     if num >= 9:
+        #         break
 
-    # 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.")
+    async def connect_and_receive(self, address):
+        async with BleakClient(address) as client:
+            if await client.is_connected():
+                rawdata = await client.read_gatt_char(STM32_UUID)
+                data = rawdata.decode("utf-8")
+                if data.startswith("[") and data.endswith("]"):
+                    list = json.loads(data)
+                    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:
+                    info = "传输数据出错"
+                label = Label(text=info)
+                self.add_widget(label)
+                return 
+            else:
+                print("Failed to connect to device.")
     def debug(self):
         # self.size = (800,480)
         grid = GridLayout(cols=2,rows=4,width=self.width,height=self.height)
@@ -61,7 +86,7 @@ class InfoWidget(Widget):
 class STI2021A(App):
     def build(self):
         info = InfoWidget()
-        info.debug()
+        # info.debug()
         return info
 
 

sti2021a.kv

@@ -2,5 +2,4 @@
 
 <InfoWidget>:
     orientation: 'vertical'
-    size_hint: 1, 1
-    
+    size_hint: 1, 1