Encapsulate brightness controll into the class BrightnessController.

Add a new app to configure the brightness.

2 files changed, 98 insertions, 0 deletions

diff --git a/src/Components/Brightness/BrightnessController.cpp b/src/Components/Brightness/BrightnessController.cpp
new file mode 100644
index 00000000..c8825d68
--- /dev/null
+++ b/src/Components/Brightness/BrightnessController.cpp
@@ -0,0 +1,70 @@
+#include <hal/nrf_gpio.h>
+#include "BrightnessController.h"
+
+using namespace Pinetime::Controllers;
+
+
+void BrightnessController::Init() {
+  nrf_gpio_cfg_output(pinLcdBacklight1);
+  nrf_gpio_cfg_output(pinLcdBacklight2);
+  nrf_gpio_cfg_output(pinLcdBacklight3);
+  Set(level);
+}
+
+void BrightnessController::Set(BrightnessController::Levels level) {
+  this->level = level;
+  switch(level) {
+    default:
+    case Levels::High:
+      nrf_gpio_pin_clear(pinLcdBacklight1);
+      nrf_gpio_pin_clear(pinLcdBacklight2);
+      nrf_gpio_pin_clear(pinLcdBacklight3);
+      break;
+    case Levels::Medium:
+      nrf_gpio_pin_clear(pinLcdBacklight1);
+      nrf_gpio_pin_clear(pinLcdBacklight2);
+      nrf_gpio_pin_set(pinLcdBacklight3);
+      break;
+    case Levels::Low:
+      nrf_gpio_pin_clear(pinLcdBacklight1);
+      nrf_gpio_pin_set(pinLcdBacklight2);
+      nrf_gpio_pin_set(pinLcdBacklight3);
+      break;
+    case Levels::Off:
+      nrf_gpio_pin_set(pinLcdBacklight1);
+      nrf_gpio_pin_set(pinLcdBacklight2);
+      nrf_gpio_pin_set(pinLcdBacklight3);
+      break;
+  }
+}
+
+void BrightnessController::Lower() {
+  switch(level) {
+    case Levels::High: Set(Levels::Medium); break;
+    case Levels::Medium: Set(Levels::Low); break;
+    case Levels::Low: Set(Levels::Off); break;
+    default: break;
+  }
+}
+
+void BrightnessController::Higher() {
+  switch(level) {
+    case Levels::Off: Set(Levels::Low); break;
+    case Levels::Low: Set(Levels::Medium); break;
+    case Levels::Medium: Set(Levels::High); break;
+    default: break;
+  }
+}
+
+BrightnessController::Levels BrightnessController::Level() const {
+  return level;
+}
+
+void BrightnessController::Backup() {
+  backupLevel = level;
+}
+
+void BrightnessController::Restore() {
+  Set(backupLevel);
+}
+
diff --git a/src/Components/Brightness/BrightnessController.h b/src/Components/Brightness/BrightnessController.h
new file mode 100644
index 00000000..b8354ec0
--- /dev/null
+++ b/src/Components/Brightness/BrightnessController.h
@@ -0,0 +1,28 @@
+#pragma once
+
+#include <cstdint>
+
+namespace Pinetime {
+  namespace Controllers {
+    class BrightnessController {
+    public:
+      enum class Levels {Off, Low, Medium, High};
+      void Init();
+
+      void Set(Levels level);
+      Levels Level() const;
+      void Lower();
+      void Higher();
+
+      void Backup();
+      void Restore();
+
+    private:
+      static constexpr uint8_t pinLcdBacklight1 = 14;
+      static constexpr uint8_t pinLcdBacklight2 = 22;
+      static constexpr uint8_t pinLcdBacklight3 = 23;
+      Levels level = Levels::High;
+      Levels backupLevel = Levels::High;
+    };
+  }
+}