From 6b47aac0215e2e4461b43fa538c5c377fd24ab06 Mon Sep 17 00:00:00 2001
From: biver <batata@mail.ru>
Date: Mon, 3 Oct 2022 01:02:12 +0300
Subject: [PATCH] =?UTF-8?q?=D0=94=D0=BE=D0=B1=D0=B0=D0=B2=D0=BB=D1=8F?=
 =?UTF-8?q?=D0=B5=D0=BC=20=D0=BC=D0=BE=D0=B4=D1=83=D0=BB=D1=8C=20PCF8574?=
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---
 src/modules/exec/Pcf8574/Pcf8574.cpp  | 87 +++++++++++++++++++++++++++
 src/modules/exec/Pcf8574/modinfo.json | 44 ++++++++++++++
 2 files changed, 131 insertions(+)
 create mode 100644 src/modules/exec/Pcf8574/Pcf8574.cpp
 create mode 100644 src/modules/exec/Pcf8574/modinfo.json

diff --git a/src/modules/exec/Pcf8574/Pcf8574.cpp b/src/modules/exec/Pcf8574/Pcf8574.cpp
new file mode 100644
index 00000000..8d661e1f
--- /dev/null
+++ b/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;
+    }
+}
diff --git a/src/modules/exec/Pcf8574/modinfo.json b/src/modules/exec/Pcf8574/modinfo.json
new file mode 100644
index 00000000..ad66adb4
--- /dev/null
+++ b/src/modules/exec/Pcf8574/modinfo.json
@@ -0,0 +1,44 @@
+{   
+    "menuSection": "Исполнительные устройства",
+
+    "configItem": [{
+        "name": "Расширитель портов Pcf8574",
+        "type": "Reading",
+        "subtype": "Pcf8574",
+        "id": "Pcf",
+        "widget": "",
+        "page": "",
+        "descr": "",
+        "int": "0",
+        "addr": "0x20",
+        "index": 1
+    }],
+    
+    "about": {
+        "authorName": "Serghei Crasnicov",
+        "authorContact": "https://t.me/Serghei63",
+        "authorGit": "https://github.com/Serghei63",
+        "specialThanks": "Ilya Belyakov @Biveraxe , @AEV_LAB ",
+        "moduleName": "Pcf8574",
+        "moduleVersion": "1.0",
+        "moduleDesc": "Добавляет в систему дополнительные GPIO для элементов, которые поддерживают такую функцию.",
+        "propInfo": {
+            "int": "Не используется",
+            "addr": "Адрес устройства на шине, обычно 0x20",
+            "index": "Значения от 1 до 4, где при выборе 1 будет нумерация pin 100-115, при выборе 2 200-215 и т.д."
+        }
+    },
+
+    "defActive": true,
+
+    "devices": {
+        "esp32_4mb": [
+            "adafruit/Adafruit PCF8574@^1.0.0",
+            "adafruit/Adafruit BusIO @ ^1.13.0"
+        ],
+        "esp8266_4mb": [
+            "adafruit/Adafruit PCF8574@^1.0.0",
+            "adafruit/Adafruit BusIO @ ^1.13.0"
+        ]
+    }
+}
\ No newline at end of file