Refactored Ppg for frequency based algorithm. (#1486)

New implementation of the heart rate sensor data processing using a frequency based PPG algorithm.
The HRS3300 settings are fine-tuned for better signal to noise at 10Hz.
The measurement delay is now set to 100ms.
Enable and use the ambient light sensor.
FFT implementation based on ArduinoFFT (https://github.com/kosme/arduinoFFT, GPLv3.0).

1 files changed, 0 insertions, 22 deletions

diff --git a/src/components/heartrate/Biquad.h b/src/components/heartrate/Biquad.h
deleted file mode 100644
index 7c8ca58f..00000000
--- a/src/components/heartrate/Biquad.h
+++ /dev/null
@@ -1,22 +0,0 @@
-#pragma once
-
-namespace Pinetime {
-  namespace Controllers {
-    /// Direct Form II Biquad Filter
-    class Biquad {
-    public:
-      Biquad(float b0, float b1, float b2, float a1, float a2);
-      float Step(float x);
-
-    private:
-      float b0;
-      float b1;
-      float b2;
-      float a1;
-      float a2;
-
-      float v1 = 0.0f;
-      float v2 = 0.0f;
-    };
-  }
-}