67 lines
2.6 KiB
C++
67 lines
2.6 KiB
C++
#pragma once
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#include <ExpansionCard.hpp>
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#include <PCF8574.h>
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#include <map>
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// Card Type
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#define CARD_TYPE_DIGITAL_INPUT 0x01
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/**
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* @brief ESPMegaPRO Digital Input Card
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*
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* This class represents the ESPMegaPRO Digital Input Card.
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* It allows you to read the state of the digital inputs from the ESPMegaPRO Digital Input Card.
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* It also allows you to register callback functions to be called when a pin changes.
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* The callback function also support debouncing.
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*
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*/
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class DigitalInputCard : public ExpansionCard {
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public:
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// Instantiate the card with the specified address
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DigitalInputCard(uint8_t address_a, uint8_t address_b);
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// Instantiate the card with the specified position on the dip switch
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DigitalInputCard(bool bit0, bool bit1, bool bit2, bool bit3, bool bit4, bool bit5);
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// Initialize the card
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bool begin();
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// Refresh and Read the input from the specified pin, always refresh the input buffers
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bool digitalRead(uint8_t pin);
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// Read the input from the specified pin, also refresh the input buffers if refresh is true
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bool digitalRead(uint8_t pin, bool refresh);
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// Preform a loop to refresh the input buffers
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void loop();
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// Get the input buffer for bank A
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uint8_t getInputBufferA();
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// Get the input buffer for bank B
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uint8_t getInputBufferB();
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// Set the debounce time for the specified pin
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void setDebounceTime(uint8_t pin, uint32_t debounceTime);
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// Register a callback function to be called when a pin changes
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uint8_t registerCallback(std::function<void(uint8_t, bool)> callback);
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// Unregister the callback function
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void unregisterCallback(uint8_t handler);
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// Load a new pin map
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void loadPinMap(uint8_t pinMap[16]);
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// Get type of card
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uint8_t getType();
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private:
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PCF8574 inputBankA;
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PCF8574 inputBankB;
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uint8_t address_a;
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uint8_t address_b;
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uint8_t inputBufferA;
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uint8_t inputBufferB;
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uint8_t previousInputBufferA;
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uint8_t previousInputBufferB;
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uint32_t debounceTime[16];
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uint32_t lastDebounceTime[16];
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bool pinChanged[16];
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// A map of the physical pin to the virtual pin
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uint8_t pinMap[16];
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// A map of the virtual pin to the physical pin
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uint8_t virtualPinMap[16];
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uint8_t callbacks_handler_index = 0;
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std::map<uint8_t, std::function<void(uint8_t, bool)>> callbacks;
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void refreshInputBankA();
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void refreshInputBankB();
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void handlePinChange(int pin, uint8_t& currentBuffer, uint8_t& previousBuffer);
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}; |