Hal refactored (#99)

Boards/M5stackShared/Source/hal/M5stackTouch.cpp

@@ -0,0 +1,48 @@
+#include "M5stackTouch.h"
+#include "M5Unified.hpp"
+#include "esp_err.h"
+#include "Log.h"
+
+#define TAG "m5stack_touch"
+
+static void touchReadCallback(TT_UNUSED lv_indev_t* indev, lv_indev_data_t* data) {
+    lgfx::touch_point_t point; // Making it static makes it unreliable
+    bool touched = M5.Lcd.getTouch(&point) > 0;
+    if (!touched) {
+        data->state = LV_INDEV_STATE_REL;
+    } else {
+        data->state = LV_INDEV_STATE_PR;
+        data->point.x = point.x;
+        data->point.y = point.y;
+    }
+}
+
+_Nullable lv_indev_t* createTouch() {
+    static lv_indev_t* indev = lv_indev_create();
+    LV_ASSERT_MALLOC(indev)
+    if (indev == nullptr) {
+        return nullptr;
+    }
+
+    lv_indev_set_type(indev, LV_INDEV_TYPE_POINTER);
+    lv_indev_set_read_cb(indev, touchReadCallback);
+    return indev;
+}
+bool M5stackTouch::start(lv_display_t* display) {
+
+    TT_LOG_I(TAG, "Adding touch to LVGL");
+    deviceHandle = createTouch();
+    if (deviceHandle == nullptr) {
+        TT_LOG_E(TAG, "Adding touch failed");
+        return false;
+    }
+
+    return true;
+}
+
+bool M5stackTouch::stop() {
+    tt_assert(deviceHandle != nullptr);
+    lv_indev_delete(deviceHandle);
+    deviceHandle = nullptr;
+    return true;
+}