First implementation of the HR sensor using 100% foss code (ported from waspos)

src/displayapp/screens/ApplicationList.cpp

@@ -45,7 +45,7 @@ std::unique_ptr<Screen> ApplicationList::CreateScreen1() {
           {Symbols::sun, Apps::Brightness},
           {Symbols::list, Apps::SysInfo},
           {Symbols::check, Apps::FirmwareValidation},
-          {Symbols::none, Apps::None}
+          {Symbols::heartBeat, Apps::HeartRate}
           }
 
 

src/displayapp/screens/HeartRate.cpp

@@ -0,0 +1,76 @@
+#include <libs/lvgl/lvgl.h>
+#include "HeartRate.h"
+#include <components/heartrate/HeartRateController.h>
+
+#include "../DisplayApp.h"
+
+using namespace Pinetime::Applications::Screens;
+extern lv_font_t jetbrains_mono_extrabold_compressed;
+extern lv_font_t jetbrains_mono_bold_20;
+
+const char* ToString(Pinetime::Controllers::HeartRateController::States s) {
+  switch(s) {
+    case Pinetime::Controllers::HeartRateController::States::NotEnoughData: return "Not enough data,\nplease wait...";
+    case Pinetime::Controllers::HeartRateController::States::NoTouch: return "No touch detected";
+    case Pinetime::Controllers::HeartRateController::States::Running: return "Measuring...";
+  }
+  return "";
+}
+
+HeartRate::HeartRate(Pinetime::Applications::DisplayApp *app, Controllers::HeartRateController& heartRateController) : Screen(app), heartRateController{heartRateController} {
+  label_bpm = lv_label_create(lv_scr_act(), NULL);
+
+  labelStyle = const_cast<lv_style_t *>(lv_label_get_style(label_bpm, LV_LABEL_STYLE_MAIN));
+  labelStyle->text.font = &jetbrains_mono_bold_20;
+
+  lv_style_copy(&labelBigStyle, labelStyle);
+  labelBigStyle.text.font = &jetbrains_mono_extrabold_compressed;
+
+  lv_label_set_style(label_bpm, LV_LABEL_STYLE_MAIN, labelStyle);
+
+  label_hr = lv_label_create(lv_scr_act(), NULL);
+  lv_label_set_style(label_hr, LV_LABEL_STYLE_MAIN, &labelBigStyle);
+  lv_obj_align(label_hr, lv_scr_act(), LV_ALIGN_CENTER, -70, 0);
+  lv_label_set_text(label_hr, "000");
+
+  lv_label_set_text(label_bpm, "Heart rate BPM");
+  lv_obj_align(label_bpm, label_hr, LV_ALIGN_OUT_TOP_MID, 0, -20);
+
+
+  label_status = lv_label_create(lv_scr_act(), NULL);
+  lv_label_set_text(label_status, ToString(Pinetime::Controllers::HeartRateController::States::NotEnoughData));
+  lv_label_set_style(label_status, LV_LABEL_STYLE_MAIN, labelStyle);
+  lv_obj_align(label_status, label_hr, LV_ALIGN_OUT_BOTTOM_MID, 0, 20);
+
+  heartRateController.Start();
+}
+
+HeartRate::~HeartRate() {
+  heartRateController.Stop();
+  lv_obj_clean(lv_scr_act());
+}
+
+bool HeartRate::Refresh() {
+  char hr[4];
+
+  auto state = heartRateController.State();
+  switch(state) {
+    case Controllers::HeartRateController::States::NoTouch:
+    case Controllers::HeartRateController::States::NotEnoughData:
+      lv_label_set_text(label_hr, "000");
+      break;
+    default:
+      sprintf(hr, "%03d", heartRateController.HeartRate());
+      lv_label_set_text(label_hr, hr);
+  }
+
+  lv_label_set_text(label_status, ToString(state));
+  lv_obj_align(label_status, label_hr, LV_ALIGN_OUT_BOTTOM_MID, 0, 20);
+
+  return running;
+}
+
+bool HeartRate::OnButtonPushed() {
+  running = false;
+  return true;
+}

src/displayapp/screens/HeartRate.h

@@ -0,0 +1,38 @@
+#pragma once
+
+#include <cstdint>
+#include <chrono>
+#include "Screen.h"
+#include <bits/unique_ptr.h>
+#include <libs/lvgl/src/lv_core/lv_style.h>
+#include <libs/lvgl/src/lv_core/lv_obj.h>
+
+namespace Pinetime {
+  namespace Controllers {
+    class HeartRateController;
+  }
+  namespace Applications {
+    namespace Screens {
+
+      class HeartRate : public Screen{
+      public:
+        HeartRate(DisplayApp* app, Controllers::HeartRateController& HeartRateController);
+        ~HeartRate() override;
+
+        bool Refresh() override;
+        bool OnButtonPushed() override;
+
+      private:
+        Controllers::HeartRateController& heartRateController;
+        lv_obj_t* label_hr;
+        lv_obj_t* label_bpm;
+        lv_obj_t* label_status;
+        lv_style_t labelBigStyle;
+        lv_style_t* labelStyle;
+
+        bool running = true;
+
+      };
+    }
+  }
+}