Accessing red/ir sensor led data on Galaxy Watch 3

Galaxy Watch for Tizen
1

Hello, I am trying to collect red and ir LED data on a Galaxy Watch 3. I used the HRM_Raw sensor to collect green LED data, but I’m not sure how I can get the other two (HRM_RAW only collects green). Any help would be appriciated

2

Are you doing this in Web, Native or .NET?

It should be pretty well documented and I can point you to it but would need to know what you are using.

Ron
Samsung Developer Relations

3

I am doing it in Web

4

You should be able to get the information you need on this Tizen Doc page

Ron
Samsung Developer Relations

5

When I run the following line from that page:

textbox.innerHTML = tizen.systeminfo.getCapability("http://tizen.org/feature/sensor.heart_rate_monitor.led_green");

my screen prints out true, but if I do the same thing with “sensor.heart_rate_monitor.led_red” it prints out false. Does this mean that the red LED is not available? The watch must have the red led as it is used to calculate SPO2, right?

6

I only Galaxy Watch3 has SPO2 in Samsung Health and that is with the Tizen 5.5 update.

My understanding is that Galaxy Watch Active2 updated to Tizen 5.5 also has the Red LED but may be disabled.

So unless you have Galaxy Watch3 or Watch 4 (Wear OS Powered by Samsung) or maybe Active2 you won’t have a Red LED.

Ron
Samsung Developer Relations

7

I am using a galaxy watch 3

8

You can open a Developer Support Request and include the code you use.

Hopefully they can help.

Ron
Samsung Developer Relations