Improve encoder driver

It actually works and clicks now!

Still a bit rough though. Need to dive into lvgl internals to work out
what it's doing with enc_diff

src/drivers/include/relative_wheel.hpp

@@ -32,12 +32,13 @@ class RelativeWheel {
 
   auto Update() -> void;
 
-  auto is_pressed() -> bool;
+  auto is_clicking() -> bool;
   auto ticks() -> std::int_fast16_t;
 
  private:
   TouchWheel* touch_;
-  bool is_pressed_;
+  bool is_clicking_;
+  bool was_clicking_;
   bool is_first_read_;
   std::int_fast16_t ticks_;
   uint8_t last_angle_;

src/drivers/include/touchwheel.hpp

@@ -17,7 +17,8 @@
 namespace drivers {
 
 struct TouchWheelData {
-  bool is_touched = false;
+  bool is_wheel_touched = false;
+  bool is_button_touched = false;
   uint8_t wheel_position = -1;
 };
 

src/drivers/relative_wheel.cpp

@@ -15,7 +15,8 @@ namespace drivers {
 
 RelativeWheel::RelativeWheel(TouchWheel* touch)
     : touch_(touch),
-      is_pressed_(false),
+      is_clicking_(false),
+      was_clicking_(false),
       is_first_read_(true),
       ticks_(0),
       last_angle_(0) {}
@@ -23,7 +24,12 @@ RelativeWheel::RelativeWheel(TouchWheel* touch)
 auto RelativeWheel::Update() -> void {
   touch_->Update();
   TouchWheelData d = touch_->GetTouchWheelData();
-  is_pressed_ = d.is_touched;
+
+  is_clicking_ = d.is_button_touched;
+
+  if (!d.is_wheel_touched) {
+    is_first_read_ = true;
+  }
 
   uint8_t new_angle = d.wheel_position;
   if (is_first_read_) {
@@ -61,8 +67,10 @@ auto RelativeWheel::Update() -> void {
   ticks_ = change;
 }
 
-auto RelativeWheel::is_pressed() -> bool {
-  return is_pressed_;
+auto RelativeWheel::is_clicking() -> bool {
+  bool ret = is_clicking_;
+  is_clicking_ = 0;
+  return ret;
 }
 
 auto RelativeWheel::ticks() -> std::int_fast16_t {

src/drivers/touchwheel.cpp

@@ -105,8 +105,9 @@ void TouchWheel::Update() {
   }
   if (status & 0b1) {
     // Key detect. Note that the touchwheel keys also trigger this.
-    // TODO(daniel): Do something with this.
-    // bool centre_key = ReadRegister(Register::KEY_STATUS_A) & 0b1000;
+    uint8_t reg = ReadRegister(Register::KEY_STATUS_A);
+    data_.is_button_touched = reg & 0b1000;
+    data_.is_wheel_touched = reg & 0b111;
   }
 }
 

src/ui/include/wheel_encoder.hpp

@@ -8,6 +8,7 @@
 
 #include <memory>
 
+#include "core/lv_group.h"
 #include "hal/lv_hal_indev.h"
 
 #include "relative_wheel.hpp"
@@ -24,6 +25,8 @@ class TouchWheelEncoder {
  private:
   lv_indev_drv_t driver_;
   lv_indev_t* registration_;
+
+  lv_key_t last_key_;
   std::weak_ptr<drivers::RelativeWheel> wheel_;
 };
 

src/ui/screen_menu.cpp

@@ -6,8 +6,12 @@
 
 #include "screen_menu.hpp"
 
+#include "core/lv_event.h"
+#include "esp_log.h"
+
 #include "core/lv_group.h"
 #include "core/lv_obj_pos.h"
+#include "extra/widgets/list/lv_list.h"
 #include "extra/widgets/menu/lv_menu.h"
 #include "extra/widgets/spinner/lv_spinner.h"
 #include "hal/lv_hal_disp.h"
@@ -17,33 +21,25 @@
 namespace ui {
 namespace screens {
 
+static void item_click_cb(lv_event_t* ev) {
+  ESP_LOGI("menu", "clicked!");
+}
+
 Menu::Menu() {
-  lv_obj_t* menu = lv_menu_create(root_);
-  lv_obj_set_size(menu, lv_disp_get_hor_res(NULL), lv_disp_get_ver_res(NULL));
-  lv_obj_center(menu);
+  lv_obj_t* list = lv_list_create(root_);
+  lv_obj_set_size(list, lv_disp_get_hor_res(NULL), lv_disp_get_ver_res(NULL));
+  lv_obj_center(list);
 
-  lv_obj_t* main_page = lv_menu_page_create(menu, NULL);
+  lv_obj_t* button;
 
-  lv_obj_t* container;
-  lv_obj_t* label;
+  button = lv_list_add_btn(list, NULL, "hi");
+  lv_obj_add_event_cb(button, item_click_cb, LV_EVENT_CLICKED, NULL);
 
-  container = lv_menu_cont_create(main_page);
-  label = lv_label_create(container);
-  lv_label_set_text(label, "I am an item");
+  button = lv_list_add_btn(list, NULL, "second");
+  lv_obj_add_event_cb(button, item_click_cb, LV_EVENT_CLICKED, NULL);
 
-  container = lv_menu_cont_create(main_page);
-  label = lv_label_create(container);
-  lv_label_set_text(label, "I am also an item");
-
-  container = lv_menu_cont_create(main_page);
-  label = lv_label_create(container);
-  lv_label_set_text(label, "Item #3");
-
-  container = lv_menu_cont_create(main_page);
-  label = lv_label_create(container);
-  lv_label_set_text(label, "Yay!");
-
-  lv_menu_set_page(menu, main_page);
+  button = lv_list_add_btn(list, NULL, "third");
+  lv_obj_add_event_cb(button, item_click_cb, LV_EVENT_CLICKED, NULL);
 }
 
 Menu::~Menu() {}

src/ui/wheel_encoder.cpp

@@ -5,6 +5,8 @@
  */
 
 #include "wheel_encoder.hpp"
+#include <sys/_stdint.h>
+#include "core/lv_group.h"
 #include "hal/lv_hal_indev.h"
 
 namespace ui {
@@ -17,7 +19,7 @@ void encoder_read(lv_indev_drv_t* drv, lv_indev_data_t* data) {
 
 TouchWheelEncoder::TouchWheelEncoder(
     std::weak_ptr<drivers::RelativeWheel> wheel)
-    : wheel_(wheel) {
+    : last_key_(0), wheel_(wheel) {
   lv_indev_drv_init(&driver_);
   driver_.type = LV_INDEV_TYPE_ENCODER;
   driver_.read_cb = encoder_read;
@@ -29,15 +31,14 @@ TouchWheelEncoder::TouchWheelEncoder(
 auto TouchWheelEncoder::Read(lv_indev_data_t* data) -> void {
   auto lock = wheel_.lock();
   if (lock == nullptr) {
-    data->state = LV_INDEV_STATE_RELEASED;
-    data->enc_diff = 0;
     return;
   }
 
   lock->Update();
-  data->state =
-      lock->is_pressed() ? LV_INDEV_STATE_PRESSED : LV_INDEV_STATE_RELEASED;
+
   data->enc_diff = lock->ticks();
+  data->state =
+      lock->is_clicking() ? LV_INDEV_STATE_PRESSED : LV_INDEV_STATE_RELEASED;
 }
 
 }  // namespace ui