CommandParser.h

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#pragma once
#include <stdio.h>
#include <string.h>
#include <HardwareSerial.h>
 
 
class CommandParser
{
private:
    char ch;            
    char buf[255];      
    uint8_t bufIndex;   
 
    static CommandParser* instance; 
 
public:
 
    enum COMMANDS{
        WAITING,            
        PAN_TILT,           
        PAN_TILT_OFFSET,    
        HOME,               
        ERROR               
    };
 
private:
    CommandParser();
 
    uint8_t createBuffer();
    
    uint8_t checkCommand();
 
public:
    static CommandParser* initialize();
 
    uint8_t parse();
 
    char* getCommand();
};