Adolfo Reyna
84 lines
2.3 KiB
C++
84 lines
2.3 KiB
C++
#ifndef LOW_LEVEL_TOUCH_H
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#define LOW_LEVEL_TOUCH_H
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#include <cstdint>
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#include <stdbool.h>
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using std::int16_t;
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using std::uint8_t;
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using std::uint32_t;
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// Touch driver type enumeration
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typedef enum {
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TOUCH_TYPE_FT6336U,
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TOUCH_TYPE_NONE // For boards without touch
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} TouchType;
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// Maximum touch points (most capacitive touch controllers support 1-5 points)
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#define TOUCH_MAX_POINTS 2
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// Touch event types
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typedef enum {
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TOUCH_EVENT_PRESS_DOWN = 0,
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TOUCH_EVENT_LIFT_UP = 1,
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TOUCH_EVENT_CONTACT = 2,
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TOUCH_EVENT_NO_EVENT = 3
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} TouchEvent;
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// Touch point structure
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typedef struct {
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int16_t x;
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int16_t y;
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uint8_t event;
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uint8_t id;
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uint8_t pressure; // Touch pressure/area/weight
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} TouchPoint;
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// Touch data structure
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typedef struct {
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uint8_t touch_count;
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TouchPoint points[TOUCH_MAX_POINTS];
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uint8_t gesture;
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} TouchData;
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// Abstract touch interface
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class LowLevelTouch {
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public:
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virtual ~LowLevelTouch() {}
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// Core touch operations
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virtual bool init() = 0;
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virtual bool read_touch(TouchData* data) = 0;
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virtual bool is_touched() = 0;
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// Touch properties
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virtual int get_screen_width() const = 0;
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virtual int get_screen_height() const = 0;
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virtual TouchType get_type() const = 0;
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virtual uint8_t get_max_touch_points() const = 0;
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// Optional: Device information
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virtual uint8_t get_chip_id() { return 0xFF; }
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virtual uint8_t get_firmware_version() { return 0xFF; }
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// Optional: Coordinate transformation (handled internally by driver)
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virtual void set_coordinate_transform(bool swap_xy, bool invert_x, bool invert_y) {
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(void)swap_xy; (void)invert_x; (void)invert_y;
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}
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// Optional: Interrupt callback
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virtual void set_interrupt_callback(void (*callback)(unsigned int gpio, uint32_t events)) {
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(void)callback;
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}
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// Optional: Test/diagnostic
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virtual bool test_communication() { return false; }
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// Factory method - creates touch controller based on type and screen dimensions
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// Uses board_config.h for pin definitions and optional transform parameters
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static LowLevelTouch* create(TouchType type, int screen_width, int screen_height,
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bool swap_xy = false, bool invert_x = false, bool invert_y = false);
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};
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#endif // LOW_LEVEL_TOUCH_H
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