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#pragma once
#include <functional>
#include <stdint.h>
#include "esp_err.h"
#include "result.hpp"
#include "gpio_expander.hpp"
namespace drivers {
struct TouchWheelData {
bool is_touched = false;
uint8_t wheel_position = -1;
};
class TouchWheel {
public:
enum Error {
FAILED_TO_BOOT,
FAILED_TO_CONFIGURE,
};
static auto create(GpioExpander* expander)
-> cpp::result<std::unique_ptr<TouchWheel>, Error>;
TouchWheel(GpioExpander* gpio);
~TouchWheel();
// Not copyable or movable.
TouchWheel(const TouchWheel&) = delete;
TouchWheel& operator=(const TouchWheel&) = delete;
auto Update() -> void;
auto GetTouchWheelData() const -> TouchWheelData;
private:
GpioExpander* gpio_;
TouchWheelData data_;
enum Register {
FIRMWARE_VERSION = 0x1,
DETECTION_STATUS = 0x2,
KEY_STATUS_A = 0x3,
KEY_STATUS_B = 0x4,
SLIDER_POSITION = 0x5,
CALIBRATE = 0x6,
RESET = 0x7,
LOW_POWER = 0x8,
SLIDER_OPTIONS = 0x14,
};
void WriteRegister(uint8_t reg, uint8_t val);
void ReadRegister(uint8_t reg, uint8_t* data, uint8_t count);
};
} // namespace drivers
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