Implement device management (#199)

- Added `tt::hal::Device` and functions (de)register devices and search for them.
- Refactored apps: `Power` and `Display` settings apps now use the device API to find devices.
- Implemented the new API for all existing drivers for all devices, including the simulator.
- Updated HAL Configuration to return `std::shared_ptr` instead of raw pointers.
- Added test project for headless tests and implemented tests for the new code.

Boards/UnPhone/Source/bq24295/Bq24295.h

@@ -4,7 +4,7 @@
 
 #define BQ24295_ADDRESS 0x6BU
 
-class Bq24295 : I2cDevice {
+class Bq24295 final : public tt::hal::i2c::I2cDevice {
 
 private:
 
@@ -12,6 +12,10 @@ private:
 
 public:
 
+    std::string getName() const final { return "BQ24295"; }
+
+    std::string getDescription() const final { return "I2C-controlled single cell USB charger"; }
+
     enum class WatchDogTimer {
         Disabled = 0b000000,
         Enabled40s = 0b010000,

Boards/UnPhone/Source/hal/UnPhoneDisplay.cpp

@@ -30,8 +30,8 @@ bool UnPhoneDisplay::start() {
     lv_display_set_color_format(displayHandle, LV_COLOR_FORMAT_NATIVE);
 
     // TODO malloc to use SPIRAM
-    static auto* buffer1 = (uint8_t*)heap_caps_malloc(BUFFER_SIZE, MALLOC_CAP_SPIRAM);
-    static auto* buffer2 = (uint8_t*)heap_caps_malloc(BUFFER_SIZE, MALLOC_CAP_SPIRAM);
+    buffer1 = (uint8_t*)heap_caps_malloc(BUFFER_SIZE, MALLOC_CAP_SPIRAM);
+    buffer2 = (uint8_t*)heap_caps_malloc(BUFFER_SIZE, MALLOC_CAP_SPIRAM);
     assert(buffer1 != nullptr);
     assert(buffer2 != nullptr);
 
@@ -61,13 +61,18 @@ bool UnPhoneDisplay::stop() {
     lv_display_delete(displayHandle);
     displayHandle = nullptr;
 
+    heap_caps_free(buffer1);
+    heap_caps_free(buffer2);
+    buffer1 = nullptr;
+    buffer2 = nullptr;
+
     return true;
 }
 
-tt::hal::Touch* _Nullable UnPhoneDisplay::createTouch() {
-    return static_cast<tt::hal::Touch*>(new UnPhoneTouch());
+std::shared_ptr<tt::hal::Touch> _Nullable UnPhoneDisplay::createTouch() {
+    return std::make_shared<UnPhoneTouch>();
 }
 
-tt::hal::Display* createDisplay() {
-    return static_cast<tt::hal::Display*>(new UnPhoneDisplay());
+std::shared_ptr<tt::hal::Display> createDisplay() {
+    return std::make_shared<UnPhoneDisplay>();
 }

Boards/UnPhone/Source/hal/UnPhoneDisplay.h

@@ -11,16 +11,21 @@ class UnPhoneDisplay : public tt::hal::Display {
 private:
 
     lv_display_t* displayHandle = nullptr;
+    uint8_t* buffer1 = nullptr;
+    uint8_t* buffer2 = nullptr;
 
 public:
 
+    std::string getName() const final { return "HX8357"; }
+    std::string getDescription() const final { return "SPI display"; }
+
     bool start() override;
 
     bool stop() override;
 
-    tt::hal::Touch* _Nullable createTouch() override;
+    std::shared_ptr<tt::hal::Touch> _Nullable createTouch() override;
 
     lv_display_t* _Nullable getLvglDisplay() const override { return displayHandle; }
 };
 
-tt::hal::Display* createDisplay();
+std::shared_ptr<tt::hal::Display> createDisplay();

Boards/UnPhone/Source/hal/UnPhonePower.h

@@ -12,6 +12,9 @@ public:
     UnPhonePower() = default;
     ~UnPhonePower() = default;
 
+    std::string getName() const final { return "XPT2046 Power Measurement"; }
+    std::string getDescription() const final { return "Power interface via XPT2046 voltage measurement"; }
+
     bool supportsMetric(MetricType type) const override;
     bool getMetric(Power::MetricType type, Power::MetricData& data) override;
 

Boards/UnPhone/Source/hal/UnPhoneTouch.h

@@ -18,6 +18,9 @@ private:
 
 public:
 
+    std::string getName() const final { return "XPT2046"; }
+    std::string getDescription() const final { return "I2C touch driver"; }
+
     bool start(lv_display_t* display) override;
     bool stop() override;
     lv_indev_t* _Nullable getLvglIndev() override { return deviceHandle; }