How to get PPG (for heartrate) raw data?

[marcinkosztolowicz]

Hello,

I would like to ask if there's a way to retrieve raw PPG (Photoplethysmography) data from a Pinetime watch running the InfiniTime firmware. I am aware that it's possible to access such data using the wasp-os system, but I'm specifically interested in doing this with InfiniTime.

Is there any existing method, API, or workaround that allows for accessing the raw PPG data? If not, are there any plans to implement this feature in the future?

Thank you in advance for your help!

[marcinkosztolowicz]

first response and suggestion:
#2112 (comment)

[marcinkosztolowicz]

I created a fork where, among other things, I implemented a Bluetooth service that exposes raw PPG data. Additionally, this fork includes the ability to configure the HRS3300 sensor, which is the hardware responsible for collecting the data. There are also Python notebooks—one allows data collection, while the other demonstrates basic data cleaning and visualization on a chart. The analysis is currently at the proof-of-concept (POC) stage, but it might already be of interest to someone.

https://github.com/marcinkosztolowicz/InfiniTime/blob/heart-rate-debug-tools/FORK_DOC.md