1 files changed, 0 insertions, 99 deletions
diff --git a/src/components/heartrate/Ppg.cpp b/src/components/heartrate/Ppg.cpp
deleted file mode 100644
index a5d8369..0000000
--- a/src/components/heartrate/Ppg.cpp
+++ /dev/null
@@ -1,99 +0,0 @@
-/*
-  SPDX-License-Identifier: LGPL-3.0-or-later
-  Original work Copyright (C) 2020 Daniel Thompson
-  C++ port Copyright (C) 2021 Jean-François Milants
-*/
-
-#include "components/heartrate/Ppg.h"
-#include <vector>
-#include <nrf_log.h>
-using namespace Pinetime::Controllers;
-
-/** Original implementation from wasp-os : https://github.com/daniel-thompson/wasp-os/blob/master/wasp/ppg.py */
-namespace {
-  int Compare(int8_t* d1, int8_t* d2, size_t count) {
-    int e = 0;
-    for (size_t i = 0; i < count; i++) {
-      auto d = d1[i] - d2[i];
-      e += d * d;
-    }
-    return e;
-  }
-
-  int CompareShift(int8_t* d, int shift, size_t count) {
-    return Compare(d + shift, d, count - shift);
-  }
-
-  int Trough(int8_t* d, size_t size, uint8_t mn, uint8_t mx) {
-    auto z2 = CompareShift(d, mn - 2, size);
-    auto z1 = CompareShift(d, mn - 1, size);
-    for (int i = mn; i < mx + 1; i++) {
-      auto z = CompareShift(d, i, size);
-      if (z2 > z1 && z1 < z)
-        return i;
-      z2 = z1;
-      z1 = z;
-    }
-    return -1;
-  }
-}
-
-Ppg::Ppg()
-  : hpf {0.87033078, -1.74066156, 0.87033078, -1.72377617, 0.75754694},
-    agc {20, 0.971, 2},
-    lpf {0.11595249, 0.23190498, 0.11595249, -0.72168143, 0.18549138} {
-}
-
-int8_t Ppg::Preprocess(float spl) {
-  spl -= offset;
-  spl = hpf.Step(spl);
-  spl = agc.Step(spl);
-  spl = lpf.Step(spl);
-
-  auto spl_int = static_cast<int8_t>(spl);
-
-  if (dataIndex < 200)
-    data[dataIndex++] = spl_int;
-  return spl_int;
-}
-
-float Ppg::HeartRate() {
-  if (dataIndex < 200)
-    return 0;
-
-  NRF_LOG_INFO("PREPROCESS, offset = %d", offset);
-  auto hr = ProcessHeartRate();
-  dataIndex = 0;
-  return hr;
-}
-float Ppg::ProcessHeartRate() {
-  auto t0 = Trough(data.data(), dataIndex, 7, 48);
-  if (t0 < 0)
-    return 0;
-
-  float t1 = t0 * 2;
-  t1 = Trough(data.data(), dataIndex, t1 - 5, t1 + 5);
-  if (t1 < 0)
-    return 0;
-
-  float t2 = static_cast<int>(t1 * 3) / 2;
-  t2 = Trough(data.data(), dataIndex, t2 - 5, t2 + 5);
-  if (t2 < 0)
-    return 0;
-
-  float t3 = static_cast<int>(t2 * 4) / 3;
-  t3 = Trough(data.data(), dataIndex, t3 - 4, t3 + 4);
-  if (t3 < 0)
-    return static_cast<int>(60 * 24 * 3) / static_cast<int>(t2);
-
-  return static_cast<int>(60 * 24 * 4) / static_cast<int>(t3);
-}
-
-void Ppg::SetOffset(uint16_t offset) {
-  this->offset = offset;
-  dataIndex = 0;
-}
-
-void Ppg::Reset() {
-  dataIndex = 0;
-}