49 lines
1.8 KiB
C++
49 lines
1.8 KiB
C++
#pragma once
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#include <stdio.h>
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#include <inttypes.h>
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#include "freertos/FreeRTOS.h"
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#include "freertos/task.h"
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#include "esp_system.h"
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typedef void (*shutdown_display_handlerFunc)(void);
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typedef void (*restart_display_handlerFunc)(void);
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class DisplayHandler {
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public:
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DisplayHandler(QueueHandle_t touch_queue, SemaphoreHandle_t lvgl_mutex);
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// the system_event_group is used to set display-ready bit
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virtual void init(EventGroupHandle_t system_event_group) = 0;
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virtual void start_event_loop() = 0;
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// get a handler to perform display shutdown cleanup, this is called after event loop ends and DisplayHandler is deleted
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virtual shutdown_display_handlerFunc get_shutdown_display_handler() = 0;
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virtual restart_display_handlerFunc get_restart_display_handler() = 0;
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virtual ~DisplayHandler() = 0;
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private:
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DisplayHandler(const DisplayHandler&) = delete;
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DisplayHandler& operator=(const DisplayHandler&) = delete;
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};
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class EInkDisplayHandler : public DisplayHandler {
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public:
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EInkDisplayHandler(QueueHandle_t touch_queue, SemaphoreHandle_t lvgl_mutex);
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void init(EventGroupHandle_t system_event_group) override;
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void start_event_loop() override;
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shutdown_display_handlerFunc get_shutdown_display_handler() override;
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restart_display_handlerFunc get_restart_display_handler() override;
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~EInkDisplayHandler() override;
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private:
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// Task adapter used for FreeRTOS task creation. It forwards to the
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// instance `run_event_loop()` method using the `this` pointer passed
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// as the task parameter.
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static void task_adapter(void* arg);
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// Instance method that implements the display task loop.
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void run_event_loop();
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// prevent copying
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EInkDisplayHandler(const EInkDisplayHandler&) = delete;
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EInkDisplayHandler& operator=(const EInkDisplayHandler&) = delete;
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};
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