From c22e30a4a6ef014c7a5086ad47eaab7740a75ff2 Mon Sep 17 00:00:00 2001
From: Ceimour <113631258+Ceimour@users.noreply.github.com>
Date: Sun, 30 Apr 2023 08:50:18 -0500
Subject: 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).
---
 src/components/heartrate/Biquad.h | 22 ----------------------
 1 file changed, 22 deletions(-)
 delete mode 100644 src/components/heartrate/Biquad.h

(limited to 'src/components/heartrate/Biquad.h')

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;
-    };
-  }
-}
-- 
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