cs_Gpio.h

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/*
 * Author: Crownstone Team
 * Copyright: Crownstone (https://crownstone.rocks)
 * Date: 18 Feb., 2021
 * Triple-license: LGPLv3+, Apache License, and/or MIT
 */
#pragma once
 
#include <ble/cs_Nordic.h>
#include <cfg/cs_Boards.h>
#include <cfg/cs_Config.h>
#include <events/cs_EventListener.h>
 
#include <vector>
 
#define TOTAL_PIN_COUNT GPIO_INDEX_COUNT + BUTTON_COUNT + LED_COUNT
 
typedef uint8_t pin_t;
 
enum GpioDirection { INPUT = 1, OUTPUT = 2, SENSE = 3 };
 
enum GpioPullResistor { NONE = 0, UP = 1, DOWN = 2 };
 
enum GpioPolarity { HITOLO = 1, LOTOHI = 2, TOGGLE = 3 };
 
typedef struct pin_info_t {
    bool event;
    uint8_t direction;
} pin_info_t;
 
class Gpio : public EventListener {
 
public:
    static Gpio& getInstance();
 
    void init(const boards_config_t& board);
 
    void handleEvent(event_t& event);
 
    void registerEvent(pin_t pin);
 
private:
    Gpio();
 
    Gpio(Gpio const&);
 
    void operator=(Gpio const&);
 
    void tick();
 
    pin_info_t _pins[TOTAL_PIN_COUNT];
 
    bool pinExists(uint8_t pin_index);
 
    pin_t getPin(uint8_t pin_index);
 
    bool isLedPin(uint8_t pin_index);
 
    cs_ret_code_t configure(uint8_t pin_index, GpioDirection direction, GpioPullResistor pull, GpioPolarity polarity);
 
 
    cs_ret_code_t write(uint8_t pin_index, uint8_t* buf, uint8_t& length);
 
    cs_ret_code_t read(uint8_t pin_index, uint8_t* buf, uint8_t& length);
 
    bool _initialized;
 
    const boards_config_t* _boardConfig;
};