Добавляем модуль PCF8574

src/modules/exec/Pcf8574/Pcf8574.cpp

@@ -0,0 +1,87 @@
+#include "Global.h"
+#include "classes/IoTItem.h"
+#include "classes/IoTGpio.h"
+#include <Adafruit_PCF8574.h>
+
+/* Example for 8 input buttons that are connected from the GPIO expander pins to ground.
+ * Note the buttons must be connected with the other side of the switch to GROUND. There is
+ * a built in pull-up 'resistor' on each input, but no pull-down resistor capability.
+ */
+
+void scanI2C();
+
+class Pcf8574Driver : public IoTGpio {
+   private:
+    Adafruit_PCF8574 _pcf;
+
+   public:
+    Pcf8574Driver(int index, String addr) : IoTGpio(index) {
+        if (!_pcf.begin(hexStringToUint8(addr))) {
+            Serial.println("PCF8574 Init Error.");
+        }
+    }
+
+    void pinMode(uint8_t pin, uint8_t mode) {
+        _pcf.pinMode(pin, mode);
+    }
+
+    void digitalWrite(uint8_t pin, uint8_t val) {
+        _pcf.digitalWrite(pin, val);
+    }
+
+    int digitalRead(uint8_t pin) {
+        return _pcf.digitalRead(pin);
+    }
+
+    void digitalInvert(uint8_t pin) {
+        _pcf.digitalWrite(pin, 1 - _pcf.digitalRead(pin));
+    }
+
+    ~Pcf8574Driver() {};
+};
+
+
+class Pcf8574 : public IoTItem {
+   private:
+    Pcf8574Driver* _driver;
+
+   public:
+    Pcf8574(String parameters) : IoTItem(parameters) {
+        _driver = nullptr;
+        
+        String addr;
+        jsonRead(parameters, "addr", addr);
+        if (addr == "") {
+            scanI2C();
+            return;
+        }
+
+        int index;
+        jsonRead(parameters, "index", index);
+        if (index > 4) {
+            Serial.println("Pcf8574 wrong index. Must be 0 - 4");
+            return;
+        }
+        
+        _driver = new Pcf8574Driver(index, addr);        
+    }
+
+    void doByInterval() {}
+
+    //возвращает ссылку на экземпляр класса Pcf8574Driver
+    IoTGpio* getGpioDriver() {
+        return _driver;
+    }
+
+    ~Pcf8574() {
+        delete _driver;
+    };
+};
+
+void* getAPI_Pcf8574(String subtype, String param) {
+    if (subtype == F("Pcf8574")) {
+        return new Pcf8574(param);
+    } else {
+        return nullptr;
+    }
+}