I tried SAP to exchange HR data between galaxy watch3 and mobile app.
So, I add heart rate API measurement method to the sample code, which Samsung provided for watch development (Accessory Samples).
Then, I met 2 problems :
Very often I got heart rate ‘-10’, but I wore the watch correctly.
The heart rate measuring frequency wasn’t stable. For ex: I ran for a long time, but got low heart rate like below 85 or it haven’t changed for a long time. It’s weird because my watch Home screen display heart rate information like 100 up!!!
The purpose is to monitor heart rate changes in running training. So, I have to record data every 15(s). Hope anyone could give me some tips.