graph

.gitignore

@@ -1 +1,2 @@
 __pycache__
+client-venv

main.py

@@ -3,21 +3,49 @@ import argparse
 import asyncio
 import logging
 import struct
+import time
 
 from bleak import BleakClient, BleakScanner
 from bleak.backends.characteristic import BleakGATTCharacteristic
 from bleak.uuids import normalize_uuid_str
 
+import dearpygui.dearpygui as dpg
+
 import myUUIDs
 
 logger = logging.getLogger(__name__)
 
+loop = None
+
+current_meas = {}
+start_time = None
+
 def current_meas_handler(characteristic: BleakGATTCharacteristic, data: bytearray):
     value = struct.unpack("<I", data)[0]
-    logger.info("%s: %f", characteristic.description, value * 1.0e-6)
+    handle = characteristic.handle
+    logger.info("%s: %f", handle, value * 1.0e-6)
+
+    global start_time
+    global current_meas
+    
+    if(start_time is None):
+        start_time = time.monotonic_ns()
+
+    start_time += 1
+
+    if(not handle in current_meas):
+        logger.info("%d %s", handle, current_meas)
+        current_meas[handle] = []
+        dpg.add_line_series([], [], label=f"{handle}", parent="y_axis", tag=f"serie{handle}")
+    
+    current_meas[handle].append(((time.monotonic_ns() - start_time) * 1e-9, value * 1e-6))
+
+    dpg.set_value(f"serie{handle}", [ [v[0] for v in current_meas[handle]], [v[1] for v in current_meas[handle]] ])
+    dpg.fit_axis_data("x_axis")
+    dpg.fit_axis_data("y_axis")
 
 
-async def main():
+async def connect():
     logger.info("starting scan...")
 
     device = await BleakScanner.find_device_by_address("84:F7:03:1B:C6:A2", cb=dict(use_bdaddr=False))
@@ -42,6 +70,32 @@ async def main():
         await asyncio.Event().wait()
         # await client.stop_notify(args.characteristic)
 
+def start_connection():
+    loop.create_task(connect())
+
+async def init_gui():
+    dpg.create_context()
+    dpg.create_viewport()
+    dpg.setup_dearpygui()
+
+    with dpg.window(label="Controls", pos = [0, 0], width = dpg.get_viewport_width(), height = 100):
+        dpg.add_button(label="Connect", callback=start_connection)
+        
+    with dpg.window(label="Graphs", pos = [0, 100]):
+        with dpg.plot(label="Current", width = -1, height = -1):
+            dpg.add_plot_legend()
+
+            dpg.add_plot_axis(dpg.mvXAxis, label="x", tag="x_axis")
+            dpg.add_plot_axis(dpg.mvYAxis, label="y", tag="y_axis")
+
+            dpg.set_axis_limits_auto("x_axis")
+            dpg.set_axis_limits_auto("y_axis")
+
+    dpg.show_viewport()
+    while dpg.is_dearpygui_running():
+        dpg.render_dearpygui_frame()
+        await asyncio.sleep(0)
+    dpg.destroy_context()
 
 if __name__ == "__main__":
     logging.basicConfig(
@@ -50,5 +104,5 @@ if __name__ == "__main__":
     )
     
     loop = asyncio.get_event_loop()
-    loop.create_task(main())
+    loop.create_task(init_gui())
-    loop.run_forever()   
+    loop.run_forever()