Add PPG topic (radar-schemas-0.1.3)

commons/passive/polar/polar_ppg.avsc

@@ -0,0 +1,15 @@
+{
+  "namespace": "org.radarcns.passive.polar",
+  "type": "record",
+  "name": "PolarPpg",
+  "doc": "Data from PPG channels.",
+  "fields": [
+    { "name": "deviceName", "type": "string", "doc": "Polar device name" },
+    { "name": "time", "type": "long", "doc": "Device timestamp in UTC (ns)." },
+    { "name": "timeReceived", "type": "double", "doc": "Device receiver timestamp in UTC (s)." } ,
+    { "name": "ppg0", "type": "int", "doc": "PPG0." },
+    { "name": "ppg1", "type": "int", "doc": "PPG1." },
+    { "name": "ppg2", "type": "int", "doc": "PPG2." },
+    { "name": "ambient", "type": "int", "doc": "Ambient channel representing the background noise caused by other light sources, so it can be used to remove the background noise from ppg channels." }
+  ]
+}

specifications/passive/polar-1.0.0.yml

@@ -25,6 +25,13 @@ data:
     processing_state: RAW
     topic: android_polar_ecg
     value_schema: .passive.polar.PolarEcg
+  - type: PPG
+    sample_rate:
+      dynamic: true
+    unit: UNKNOWN
+    processing_state: RAW
+    topic: android_polar_ppg
+    value_schema: .passive.polar.PolarPpg
   - type: HEART_RATE
     sample_rate:
       frequency: 1