добавил буффер char

include/Main.h

@@ -9,3 +9,4 @@
 #include "classes/NotAsync.h"
 #include "ESPConfiguration.h"
 #include "MqttClient.h"
+#include "classes/CommandBuf.h"

include/classes/CommandBuf.h

@@ -0,0 +1,28 @@
+#pragma once
+#include "Global.h"
+
+#define MAX_COMMAND_LENGTH 16
+#define BUFFER 128
+
+class CommandBuf;
+
+class CommandBuf {
+   public:
+    CommandBuf();
+    ~CommandBuf();
+
+    void addCommand(const char* command);
+
+    void printCommands();
+
+    String getLastCommand();
+
+   private:
+    struct CharBufferStruct {
+        char command[MAX_COMMAND_LENGTH + 1];
+    };
+    CharBufferStruct* commandList;
+    int commandCount = 0;
+};
+
+extern CommandBuf* myBuf;

src/Main.cpp

@@ -41,6 +41,18 @@ void setup() {
     sendConfigJson = new SendJson;
     sendWigdetsJson = new SendJson;
 
+    myBuf = new CommandBuf;
+
+    myBuf->addCommand("zero");
+    myBuf->addCommand("one");
+    myBuf->addCommand("two");
+    myBuf->printCommands();
+
+    myBuf->getLastCommand();
+    myBuf->getLastCommand();
+    myBuf->getLastCommand();
+    //myBuf->printCommands();
+
     configure("/config.json");
 
     //выводим остаток оперативной памяти после старта

src/classes/CommandBuf.cpp

@@ -0,0 +1,43 @@
+#include "classes/CommandBuf.h"
+
+CommandBuf::CommandBuf() {
+    commandList = NULL;
+    commandCount = 0;
+}
+CommandBuf::~CommandBuf() {}
+
+//добавление команды в буфер
+void CommandBuf::addCommand(const char* command) {
+    commandList = (CharBufferStruct*)realloc(commandList, (commandCount + 1) * sizeof(CharBufferStruct));
+    strncpy(commandList[commandCount].command, command, MAX_COMMAND_LENGTH);
+    Serial.println("command added: " + String(command) + " " + String(commandCount));
+    commandCount++;
+}
+
+//распечатаем все добавленные команды
+void CommandBuf::printCommands() {
+    if (commandCount > 0 && commandList != NULL) {
+        for (int i = 0; i < commandCount; i++) {
+            Serial.println(commandList[i].command);
+        }
+    }
+}
+
+//заберем последнюю из положенных в буфер команд
+String CommandBuf::getLastCommand() {
+    String ret = "empty";
+    if (commandList != NULL) {
+        int cnt = commandCount - 1;
+        ret = commandList[cnt].command;
+        if (cnt > 0) {
+            delete commandList[cnt].command;
+        } else if (cnt == 0) {
+            commandList = NULL;
+        }
+        Serial.println("command deleted: " + ret + " " + String(cnt));
+        commandCount--;
+    }
+    return ret;
+}
+
+CommandBuf* myBuf;