How can I run ble-serial in the background of another script.

[ear0]

I would like to run ble-serial concurrently with the code I use to communicate with a device and update a website. When I run ble-serial in command prompt and then run my code in the editor, it works fine. However, if I attempt to run ble-serial from within my code, it only runs ble-serial and never reaches the rest of my code where the updating would take place.

def get_hr_only(portname, time_wait = 0.01):
    send_command(portname, READ)
    try:  
        while True:
            if (portname.in_waiting > 0):
                yield(portname.read(portname.in_waiting).decode("ascii").split(','))
            time.sleep(time_wait) 
    
    except KeyboardInterrupt as e:
        print("Done executing loop")
        stop_device(portname)

ser = serial.Serial("COM9",115200,8,'N',1)
ser.timeout = None
ser.is_open

sio = socketio.AsyncServer()
app = web.Application()
sio.attach(app)
pauseUpdates = True
timeOffset = 0

async def index(request):
    with open('index2.html') as f:
        return web.Response(text=f.read(), content_type='text/html')
app.router.add_get('/', index)

# Listens for messages from the website.
@sio.event
def s_PauseUpdates(sid, isPaused):
    global pauseUpdates
    pauseUpdates = isPaused

# loop that sends messages to the website
async def send_data_to_webclient():
    hr = get_hr_only(ser)
    for i in hr:
        try:
            if pauseUpdates:
                send_command(ser, "pause 0\n")
                await sio.emit('c_UpdateData', i[2])
            else:
                send_command(ser, "pause 1\n")
            await sio.sleep(1)
        except IndexError:
            continue

async def init_app():
    sio.start_background_task(send_data_to_webclient)
    return app

if __name__ == '__main__':
    clear_buffers(ser)
    set_stream(ser)
    web.run_app(init_app())

I would like to start ble-serial in here

if __name__ == '__main__':
    clear_buffers(ser)
    set_stream(ser)
    web.run_app(init_app())

[Jakeler]

I don't see the complete code, so not entirely sure what is imported and where some variables/functions are coming from. Looks like you are using aiohttp though? Per default it controls the event loop and you should pass the main async function from ble-serial to the app: https://docs.aiohttp.org/en/stable/web_advanced.html#complex-applications

Also you have some sync IO with the Serial part, which can cause issues. If you don't actually need a serial port (for other programs etc.) then you might consider removing this and hook directly into the BLE interface, see the example: #63 (comment)
Instead of asyncio.run it would be the append to your server context.