ConfigPar.h

Go to the documentation of this file.

#ifndef HUMIDISTAT_CONFIGPAR_H
#define HUMIDISTAT_CONFIGPAR_H
 
#define XSTR(s) STR(s)
#define STR(s) #s
#define WIDTH 7
#define NUM_DIGITS WIDTH - 2
#define NUM_DECIMALS 4
 
class ConfigPar {
public:
    enum class ConfigParType {
        ui8,
        ui16,
        d,
    };
    // The nested struct is in order to have an overloaded constructor for the type and the union, but avoid
    // having to strcopy the label
    struct Var {
        const ConfigParType type;
        union {
            uint8_t *const ui8;
            uint16_t *const ui16;
            double *const d;
        };
 
        Var(uint8_t *par) : type(ConfigParType::ui16), ui8(par) {}
        Var(uint16_t *par) : type(ConfigParType::ui16), ui16(par) {}
        Var(double *par) : type(ConfigParType::d), d(par) {}
 
        Var() : type(ConfigParType::ui8), ui8(nullptr) {}
    } var;
 
    char label[10];
 
    void adjust(int16_t delta) const;
 
    char *asprint() const;
 
    uint8_t magnitude() const;
};
 
 
#endif //HUMIDISTAT_CONFIGPAR_H