Rename Directory

ESPMegaPRO-OS-SDK/lib/ESPMegaPRO/DigitalInputCard.hpp

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