Not getting past "Collecting ACC data..." on windows

[Normega]

Hi, I've been learning a lot about the polar interface through your project, thanks!

I'm having issues getting the data to come through on Windows- the window is starting up and I can see the pacer data, but no belt data (only the orange circle and line).
In the terminal, I'm seeing:
Found Polar device
Model Number: H10
Manufacturer Name: Polar Electro Oy
Serial Number: CA9E1121
Address: F8:65:D5:12:AA:17
Battery Level: 100%
Firmware Revision: 5.0.0
Hardware Revision: 00760690.03
Software Revision: 3.2.0
Collecting HR data...
Collecting ACC data...

Any ideas why belt data might not be getting integrated into the display?

[kieranabrennan]

@Normega I'm not sure what might cause this, I haven't tried this on Windows yet. I'd suggest updating the firmware on your Polar H10, and adding in print statements to see where it is failing.

[Logan9872]

Dear kbre93, thanks for your application！ I've been learning a lot from your project.

I encountered a similar situation in Windows environment like @Normega, and I'm not sure what went wrong. However, based on my experience developing with the Polar SDK, I believe the issue lies in the asynchronous function part. There should be a certain time interval between subscribing to heart rate and acceleration data. So, I tried modifying the following code, and that solved the problem.

View.py_
async def main(self):
await self.connect_polar()
await asyncio.sleep(1)
await asyncio.gather(
self.model.update_acc(),
self.model.update_ibi(),
)
PolarH10.py__
async def start_hr_stream(self):
await asyncio.sleep(2)
await self.bleak_client.start_notify(PolarH10.HEART_RATE_MEASUREMENT_UUID, self.hr_data_conv)
print("Collecting HR data...", flush=True)

---

[Normega]

It's still a little buggy, but the sleep commands worked beautifully- I wonder if this is hardware / operating system specific- thanks so much for the suggestion!